+
+
browse other examples
+
+
+
+
+
+ If the height of all the viewport rows is known and not going to be changed,
+ it might be passed as "row-height" attribute.
+ This reduces inner calculations and browser reflows,
+ which leads to a performance increase.
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/demo/fixedRowHeight/fixedRowHeight.js b/demo/fixedRowHeight/fixedRowHeight.js
new file mode 100644
index 00000000..93185574
--- /dev/null
+++ b/demo/fixedRowHeight/fixedRowHeight.js
@@ -0,0 +1,74 @@
+angular.module('application', ['ui.scroll'])
+
+ .controller('MainCtrl', ($scope) => {
+ $scope.hello = 'Hello Main Controller!';
+
+ let min = -150, max = 200, delay = 0, inputs = 10;
+
+ const getInput = index => {
+ const result = [];
+ for (let i = 0; i < inputs; i++) {
+ result.push({ value: ((index % 2 === 0 ? -1 : 1) * (i + 1)).toString() });
+ }
+ return result;
+ }
+
+ const data = [];
+ for (let i = min; i <= max; i++) {
+ height = 50 + (i + 1);
+ data.push({
+ index: i,
+ text: 'item #' + i,
+ input: getInput(i)
+ });
+ }
+
+ $scope.datasource = {
+ get: (index, count, success) => {
+ console.log('Getting ' + count + ' items started from ' + index + '...');
+ setTimeout(() => {
+ const result = [];
+ const start = Math.max(min, index);
+ const end = Math.min(index + count - 1, max);
+ if (start <= end) {
+ for (let i = start; i <= end; i++) {
+ const _item = data.find(item => item.index === i);
+ if (_item) {
+ result.push(_item);
+ }
+ }
+ }
+ console.log('Got ' + result.length + ' items [' + start + '..' + end + ']');
+ success(result);
+ }, delay);
+ }
+ };
+
+ $scope.getSum = item =>
+ item.input.reduce((a, i) => a + Number(i.value), 0);
+
+ $scope.getMul = item =>
+ item.input.reduce((a, i) => a * Number(i.value), 1);
+
+ $scope.getText = item => {
+ const num = $scope.getMul(item).toString();
+ const result = [];
+ for (let i = 0; i < item.text.length; i++) {
+ result.push(item.text[i]);
+ result.push(i < num.length ? num[i] : 'x');
+ }
+ return result.join('');
+ }
+
+ const perfSlowCountDefault = 2;
+ $scope.perfSlowCount = perfSlowCountDefault;
+ $scope.perfSlowCountList = [];
+ $scope.$watch('perfSlowCount', () => {
+ let size = Number($scope.perfSlowCount);
+ if (isNaN(size)) {
+ size = perfSlowCountDefault;
+ }
+ $scope.perfSlowCountList = (new Array(size)).fill(0);
+ })
+
+ });
diff --git a/demo/grid-dnd-widths/grid-dnd-widths.html b/demo/grid-dnd-widths/grid-dnd-widths.html
index 06f05182..678a0bb1 100644
--- a/demo/grid-dnd-widths/grid-dnd-widths.html
+++ b/demo/grid-dnd-widths/grid-dnd-widths.html
@@ -1,55 +1,55 @@
-
-
-
-
-
Grid dnd widths
-
-
-
-
-
-
-
-
-
-
-
browse other examples
-
-
-
-
- To manipulate grid columns widths .css method on gridAdapter column is available:
-
-
-$scope.adapter.gridAdapter.columns[0].css('width', '200px');
-
- You also can set any css property this way.
-
-
-
-
-
-
- num
-
- text
-
-
-
-
- {{item.col1}}
- {{item.col2}}
-
-
-
-
-
-
+
+
+
+
+
Grid dnd widths
+
+
+
+
+
+
+
+
+
+
+
browse other examples
+
+
+
+
+ To manipulate grid columns widths .css method on gridAdapter column is available:
+
+
+$scope.adapter.gridAdapter.columns[0].css('width', '200px');
+
+ You also can set any css property this way.
+
+
+
+
+
+
+ num
+
+ text
+
+
+
+
+ {{item.col1}}
+ {{item.col2}}
+
+
+
+
+
+
\ No newline at end of file
diff --git a/demo/grid-dnd-widths/grid-dnd-widths.js b/demo/grid-dnd-widths/grid-dnd-widths.js
index 9404aeca..629bcd84 100644
--- a/demo/grid-dnd-widths/grid-dnd-widths.js
+++ b/demo/grid-dnd-widths/grid-dnd-widths.js
@@ -1,57 +1,57 @@
-angular.module('application', ['ui.scroll', 'ui.scroll.grid'])
- .controller('gridController', [
- '$scope', '$log', '$timeout', function ($scope, console, $timeout) {
- var datasource = {};
-
- datasource.get = function (index, count, success) {
- $timeout(function () {
- var result = [];
- for (var i = index; i <= index + count - 1; i++) {
- result.push({
- col1: i,
- col2: 'item #' + i
- });
- }
- success(result);
- }, 100);
- };
-
- $scope.datasource = datasource;
-
- var splitter = angular.element(document.getElementById('splitter'));
- var startX = 0;
- var right = 0;
- var startDrag = false;
-
- $scope.dragStart = function (evt) {
- if(startDrag) {
- return false;
- }
- splitter.addClass('active');
- startDrag = true;
- startX = right + evt.clientX;
- };
-
- $scope.dragOver = function (evt) {
- if(!startDrag) {
- return false;
- }
-
- right = startX - evt.clientX;
- $scope.adapter.gridAdapter.columns[1].css('width', (200 + right) + 'px');
- $scope.adapter.gridAdapter.columns[0].css('width', (80 - right) + 'px');
- splitter.css('right', '0');
-
- return false;
- };
-
- $scope.dragDrop = function (evt) {
- startDrag = false;
- splitter.removeClass('active');
- }
-
-
- }
- ]);
-
-
+angular.module('application', ['ui.scroll', 'ui.scroll.grid'])
+ .controller('gridController', [
+ '$scope', '$log', '$timeout', function ($scope, console, $timeout) {
+ var datasource = {};
+
+ datasource.get = function (index, count, success) {
+ $timeout(function () {
+ var result = [];
+ for (var i = index; i <= index + count - 1; i++) {
+ result.push({
+ col1: i,
+ col2: 'item #' + i
+ });
+ }
+ success(result);
+ }, 100);
+ };
+
+ $scope.datasource = datasource;
+
+ var splitter = angular.element(document.getElementById('splitter'));
+ var startX = 0;
+ var right = 0;
+ var startDrag = false;
+
+ $scope.dragStart = function (evt) {
+ if(startDrag) {
+ return false;
+ }
+ splitter.addClass('active');
+ startDrag = true;
+ startX = right + evt.clientX;
+ };
+
+ $scope.dragOver = function (evt) {
+ if(!startDrag) {
+ return false;
+ }
+
+ right = startX - evt.clientX;
+ $scope.adapter.gridAdapter.columns[1].css('width', (200 + right) + 'px');
+ $scope.adapter.gridAdapter.columns[0].css('width', (80 - right) + 'px');
+ splitter.css('right', '0');
+
+ return false;
+ };
+
+ $scope.dragDrop = function (evt) {
+ startDrag = false;
+ splitter.removeClass('active');
+ }
+
+
+ }
+ ]);
+
+
diff --git a/demo/grid-dnd-widths/grid.css b/demo/grid-dnd-widths/grid.css
index 1fe6cc7b..f5d16e11 100644
--- a/demo/grid-dnd-widths/grid.css
+++ b/demo/grid-dnd-widths/grid.css
@@ -1,40 +1,40 @@
-.grid {
- height: 300px;
-}
-
-.grid tbody {
- width: 300px;
- }
-
-.col1 {
- width: 80px;
-}
-
-td.col1 {
- font-style: italic;
-}
-
-.col2 {
- width: 200px;
-}
-
-.splitter{
- cursor: e-resize;
- float: right;
- border: 2px solid black;
- height: 20px;
- position: relative;
- right: 0;
-}
-
-td, th {
- border: 0 dashed #999;
- border-left-width: 1px;
-}
-th {
- border-bottom-width: 1px;
-}
-
-.active {
- border: 2px solid red;
+.grid {
+ height: 300px;
+}
+
+.grid tbody {
+ width: 300px;
+ }
+
+.col1 {
+ width: 80px;
+}
+
+td.col1 {
+ font-style: italic;
+}
+
+.col2 {
+ width: 200px;
+}
+
+.splitter{
+ cursor: e-resize;
+ float: right;
+ border: 2px solid black;
+ height: 20px;
+ position: relative;
+ right: 0;
+}
+
+td, th {
+ border: 0 dashed #999;
+ border-left-width: 1px;
+}
+th {
+ border-bottom-width: 1px;
+}
+
+.active {
+ border: 2px solid red;
}
\ No newline at end of file
diff --git a/demo/index.html b/demo/index.html
index d2c32b7c..7db6cb35 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -16,6 +16,11 @@
Datasource as service
+
+
+ Datasource as service with a fixed rowHeight
+
+
Datasource on scope (not as service)
@@ -64,6 +69,11 @@
Bottom visible (Adapter)
+
+
+ Fixed row height (higher perfromance)
+
+
Reload datasource to specified index
diff --git a/demo/insideComponent/insideComponent.html b/demo/insideComponent/insideComponent.html
index 01dc6c92..37cdebf4 100644
--- a/demo/insideComponent/insideComponent.html
+++ b/demo/insideComponent/insideComponent.html
@@ -1,32 +1,32 @@
-
-
-
- Inside Angular 1.5+ component
-
-
-
-
-
-
browse other examples
-
-
-
-
- This sample demonstrates encapsulation of the ui-scroll directive inside some custom component (Angular 1.5+).
-
- To demonstrate the work of the Adapter, click on any row. The text of the item should change after click.
-
- The controller of this Component is implemented as ES6 class. Note that this demo might not work in old browsers which don't support ES6 classes.
-
-
-
-
-
Inside Angular 1.5+ component
+
+
+
+
+
+
browse other examples
+
+
+
+
+ This sample demonstrates encapsulation of the ui-scroll directive inside some custom component (Angular 1.5+).
+
+ To demonstrate the work of the Adapter, click on any row. The text of the item should change after click.
+
+ The controller of this Component is implemented as ES6 class. Note that this demo might not work in old browsers which don't support ES6 classes.
+
+
+
+
+
' +
- '
' +
- '
{{item.name}}
' +
- '
' +
- '
' +
+ '
' +
+ '
{{item.name}}
' +
+ '
' +
+ '
jQuery
+
+
+
+
+
+
+
browse other examples
+
+
+
+
+ In case the Angular App works with jQuery, the ui-scroll should use jQuery.
+ Otherwise, the ui-scroll should use jqLiteExtras.
+
+
+
+ jQuery version is {{jqueryVersion}}
+ jQuery is not loaded
+
+
+
+
+
Adapter sync
-
-
-
-
-
-
- Prepend one item
- Append one item
-
- Remove first
- Remove last
-
-
-
-
-
-
-
Adapter sync
+
+
+
+
+
+
+ Prepend one item
+ Append one item
+
+ Remove first
+ Remove last
+
+
+
+
+
+
+
Remote server emulation
-
-
-
-
-
browse other examples
-
-
- This demo implements Remote server emulation factory, so the datasource get method looks like
-
-
-datasource.get = function(index, count, success) {
- Server.request(index, count).then(success);
-};
-
-
-
-
Remote server emulation
+
+
+
+
+
browse other examples
+
+
+ This demo implements Remote server emulation factory, so the datasource get method looks like
+
+
+datasource.get = function(index, count, success) {
+ Server.request(index, count).then(success);
+};
+
+
+
+
Datasource as service
+
+
+
+
+
+
browse other examples
+
+
+
+
+
This sample shows the optimizations provided by a fixed row height, in particular when scrolling
+ fast through a large list of items as it uses the scrollTo() method for a direct jump.
+
+
To see the optimization in action, scroll down to item #500, and then scroll back to top using the scrollbar
+ or by pressing 'Home' or 'cmd+ArrowUp' on your keyboard.
+
+ The page is identical to the standard
Datasource as service
+ demo, with the fixed row-height attribute set for the directive:
+
+
<li ui-scroll="item in datasource" row-height="26">{{item}}</li>
+
+
+
+
+
+
+
User min and max indexes
-
-
-
-
-
-
browse other examples
-
-
-
-
- Here we provide an ability of external min and max indexes setting to let the viewport know how many items do we have.
-
-
<li ui-scroll="item in datasource">{{item}}</li>
-
- Then you can play with minIndex and maxIndex properties which are being accessible on your datasource after the ui-scroll directive is linked:
-
-
-datasource.minIndex = -100;
-datasource.maxIndex = 100;
-
- Such setting does not not lead to data fetching but the scroll bar params do match datasource size defined this way.
-
-
-
- Set minIndex = {{userMinIndex}}
- Set maxIndex = {{userMaxIndex}}
- Set both Indexes
-
-
-
-
-
User min and max indexes
+
+
+
+
+
+
browse other examples
+
+
+
+
+ Here we provide an ability of external min and max indexes setting to let the viewport know how many items do we have.
+
+
<li ui-scroll="item in datasource">{{item}}</li>
+
+ Then you can play with minIndex and maxIndex properties which are being accessible on your datasource after the ui-scroll directive is linked:
+
+
+datasource.minIndex = -100;
+datasource.maxIndex = 100;
+
+ Such setting does not not lead to data fetching but the scroll bar params do match datasource size defined this way.
+
+
+
+ Set minIndex = {{userMinIndex}}
+ Set maxIndex = {{userMaxIndex}}
+ Set both Indexes
+
+
+
+
+
');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element(' ');\r\n break;\r\n default:\r\n element = angular.element('
');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""}
\ No newline at end of file
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<= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\n if (children[i] === elem) {\n angular.element(children[i - 1]).after(newElem);\n return;\n }\n }\n throw new Error('invalid DOM structure ' + elem.outerHTML);\n }\n },\n height (value){\n var self;\n self = this;\n if (typeof value !== 'undefined') {\n if (angular.isNumber(value)) {\n value = value + 'px';\n }\n return css.call(self, 'height', value);\n } else {\n return getWidthHeight(this[0], 'height', 'base');\n }\n },\n outerHeight(option) {\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\n },\n outerWidth(option) {\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\n },\n\n /*\n The offset setter method is not implemented\n */\n offset(value) {\n let docElem, win;\n let self = this;\n let box = {\n top: 0,\n left: 0\n };\n let elem = self[0];\n let doc = elem && elem.ownerDocument;\n\n if (arguments.length) {\n if (value === undefined) {\n return self;\n }\n // TODO: implement setter\n throw new Error('offset setter method is not implemented');\n }\n\n if (!doc) {\n return;\n }\n\n docElem = doc.documentElement;\n\n // TODO: Make sure it's not a disconnected DOM node\n\n if (elem.getBoundingClientRect != null) {\n box = elem.getBoundingClientRect();\n }\n\n win = doc.defaultView || doc.parentWindow;\n\n return {\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\n };\n },\n scrollTop(value) {\n return scrollTo(this, 'top', value);\n },\n scrollLeft(value) {\n return scrollTo(this, 'left', value);\n }\n }, (value, key) => {\n if (!element.prototype[key]) {\n return element.prototype[key] = value;\n }\n });\n }\n\n}\n","const hideClassToken = 'ng-ui-scroll-hide';\n\nexport default class ElementRoutines {\n\n static addCSSRules() {\n const selector = '.' + hideClassToken;\n const rules = 'display: none';\n const sheet = document.styleSheets[0];\n let index;\n try {\n index = sheet.cssRules.length;\n } catch (err) {\n index = 0;\n }\n if('insertRule' in sheet) {\n sheet.insertRule(selector + '{' + rules + '}', index);\n }\n else if('addRule' in sheet) {\n sheet.addRule(selector, rules, index);\n }\n }\n\n constructor($injector, $q) {\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\n this.$q = $q;\n }\n\n hideElement(wrapper) {\n wrapper.element.addClass(hideClassToken);\n }\n\n showElement(wrapper) {\n wrapper.element.removeClass(hideClassToken);\n }\n\n insertElement(newElement, previousElement) {\n previousElement.after(newElement);\n return [];\n }\n\n removeElement(wrapper) {\n wrapper.element.remove();\n wrapper.scope.$destroy();\n return [];\n }\n\n insertElementAnimated(newElement, previousElement) {\n if (!this.$animate) {\n return this.insertElement(newElement, previousElement);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n // no need for parent - previous element is never null\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\n\n return [deferred.promise];\n }\n\n // no need for parent - previous element is never null\n return [this.$animate.enter(newElement, null, previousElement)];\n }\n\n removeElementAnimated(wrapper) {\n if (!this.$animate) {\n return this.removeElement(wrapper);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n this.$animate.leave(wrapper.element, () => {\n wrapper.scope.$destroy();\n return deferred.resolve();\n });\n\n return [deferred.promise];\n }\n\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\n }\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\n const buffer = Object.create(Array.prototype);\n\n angular.extend(buffer, {\n size: bufferSize,\n\n reset(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = false;\n buffer.bof = false;\n buffer.first = startIndex;\n buffer.next = startIndex;\n buffer.minIndex = startIndex; // Calculated when data is effectively accessed\n buffer.maxIndex = startIndex;\n buffer.minIndexUser = null; // as set by the user (datasource)\n buffer.maxIndexUser = null;\n },\n \n // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max\n // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated\n // for a # of rows\n resetStartIndex: function resetStartIndex(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = buffer.eof && startIndex==buffer.maxIndex;\n buffer.bof = buffer.bof && startIndex==buffer.minIndex;\n buffer.first = startIndex;\n buffer.next = startIndex;\n },\n\n append(items) {\n items.forEach((item) => {\n ++buffer.next;\n buffer.insert('append', item);\n });\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\n },\n\n prepend(items) {\n items.reverse().forEach((item) => {\n --buffer.first;\n buffer.insert('prepend', item);\n });\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\n },\n\n /**\n * inserts wrapped element in the buffer\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\n * for insert the number is the index for the buffer element the new one have to be inserted after\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\n */\n insert(operation, item, isTop) {\n const wrapper = {\n item: item\n };\n\n if (operation % 1 === 0) {// it is an insert\n wrapper.op = 'insert';\n buffer.splice(operation, 0, wrapper);\n if(isTop) {\n buffer.first--;\n }\n else {\n buffer.next++;\n }\n } else {\n wrapper.op = operation;\n switch (operation) {\n case 'append':\n buffer.push(wrapper);\n break;\n case 'prepend':\n buffer.unshift(wrapper);\n break;\n }\n }\n },\n\n // removes elements from buffer\n remove(arg1, arg2) {\n if (angular.isNumber(arg1)) {\n // removes items from arg1 (including) through arg2 (excluding)\n for (let i = arg1; i < arg2; i++) {\n elementRoutines.removeElement(buffer[i]);\n }\n return buffer.splice(arg1, arg2 - arg1);\n }\n // removes single item(wrapper) from the buffer\n buffer.splice(buffer.indexOf(arg1), 1);\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\n this.incrementMinIndex();\n }\n else {\n this.decrementMaxIndex();\n }\n if(arg1._op === 'isTop') {\n buffer.first++;\n }\n else {\n buffer.next--;\n }\n if(!buffer.length) {\n buffer.first = buffer.minIndex%1 ? buffer.minIndex : startIndex;\n buffer.next = buffer.first;\n buffer.eof = buffer.eof && buffer.first==buffer.maxIndex;\n }\n\n return elementRoutines.removeElementAnimated(arg1);\n },\n\n incrementMinIndex() {\n if(buffer.minIndexUser !== null) {\n if(buffer.minIndex > buffer.minIndexUser) {\n buffer.minIndexUser++;\n return;\n }\n if(buffer.minIndex === buffer.minIndexUser) {\n buffer.minIndexUser++;\n }\n }\n buffer.minIndex++;\n },\n\n decrementMaxIndex() {\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\n buffer.maxIndexUser--;\n }\n buffer.maxIndex--;\n },\n\n getAbsMinIndex() {\n if(buffer.minIndexUser !== null) {\n return Math.min(buffer.minIndexUser, buffer.minIndex);\n }\n return buffer.minIndex;\n },\n\n getAbsMaxIndex() {\n if(buffer.maxIndexUser !== null) {\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\n }\n return buffer.maxIndex;\n },\n\n effectiveHeight(elements) {\n if (!elements.length) {\n return 0;\n }\n let top = Number.MAX_VALUE;\n let bottom = Number.NEGATIVE_INFINITY;\n elements.forEach((wrapper) => {\n if (wrapper.element[0].offsetParent) {\n // element style is not display:none\n top = Math.min(top, wrapper.element.offset().top);\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));\n }\n });\n return Math.max(0, bottom - top);\n },\n\n getItems() {\n return buffer.filter(item => item.op === 'none');\n },\n\n getFirstItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[0].item;\n },\n\n getLastItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[list.length - 1].item;\n }\n\n });\n\n buffer.reset(startIndex);\n\n return buffer;\n}\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\nclass CacheProto {\n add(item) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === item.scope.$index) {\n this[i].height = item.element.outerHeight();\n return;\n }\n }\n this.push({\n index: item.scope.$index,\n height: item.element.outerHeight()\n });\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\n }\n\n remove(argument, _isTop) {\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === index) {\n this.splice(i, 1);\n break;\n }\n }\n if(!isTop) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index > index) {\n this[i].index--;\n }\n }\n }\n }\n\n clear() {\n this.length = 0;\n }\n}\n\nfunction Cache() {\n const instance = [];\n instance.push.apply(instance, arguments);\n Object.setPrototypeOf(instance, Cache.prototype);\n return instance;\n}\nCache.prototype = Object.create(Array.prototype);\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\n);\n\nfunction generateElement(template) {\n if(template.nodeType !== Node.ELEMENT_NODE) {\n throw new Error('ui-scroll directive requires an Element node for templating the view');\n }\n let element;\n switch (template.tagName.toLowerCase()) {\n case 'dl':\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\n case 'tr':\n let table = angular.element('
');\n element = table.find('tr');\n break;\n case 'li':\n element = angular.element('
');\n break;\n default:\n element = angular.element('
');\n }\n return element;\n}\n\n//\n// Padding represents the dummy element added to both the top and the bottom of the scrolling container\n// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the \n// cache is not used and thus is not created.\n//\nclass Padding {\n constructor(template,useCache) {\n this.element = generateElement(template);\n if(useCache) {\n this.cache = new Cache();\n }\n }\n\n height() {\n // When called with a parameter, this sets the height of the padding\n return this.element.height.apply(this.element, arguments);\n }\n}\n\nexport default Padding;","import Padding from './padding';\n\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\n let topPadding = null;\n let bottomPadding = null;\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\n\n viewport.css({\n 'overflow-anchor': 'none',\n 'overflow-y': 'auto',\n 'display': 'block'\n });\n\n function bufferPadding() {\n return viewport.outerHeight() * padding; // some extra space to initiate preload\n }\n\n // \n // Viewport measurements\n //\n // +----------------+ 0\n // | top |\n // | padding |\n // +----------------+ topDataPos() [=topPadding.height]\n // | not visible |\n // | items |\n // +----------------+ topVisiblePos() [=viewport.scrollTop]\n // | |\n // | visible |\n // | items |\n // | |\n // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]\n // | not visible |\n // | items |\n // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]\n // | bottom |\n // | padding |\n // +----------------+ scrollHeight \n //\n // bufferPadding is some extra space we have top & bottom to allow infinite scrolling\n // bufferPadding = viewport.outerHeight() * padding\n //\n // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()\n \n\n angular.extend(viewport, {\n getScope() {\n return scope;\n },\n\n createPaddingElements(template) {\n topPadding = new Padding(template,!rowHeight);\n bottomPadding = new Padding(template,!rowHeight);\n element.before(topPadding.element);\n element.after(bottomPadding.element);\n topPadding.height(0);\n bottomPadding.height(0);\n },\n\n applyContainerStyle() {\n if (!container) {\n return true;\n }\n if(container !== viewport) {\n viewport.css('height', window.getComputedStyle(container[0]).height);\n }\n return viewport.height() > 0;\n },\n\n bottomDataPos() {\n let scrollHeight = viewport[0].scrollHeight;\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\n return scrollHeight - bottomPadding.height();\n },\n\n topDataPos() {\n return topPadding.height();\n },\n\n bottomVisiblePos() {\n return viewport.scrollTop() + viewport.outerHeight();\n },\n\n topVisiblePos() {\n return viewport.scrollTop();\n },\n\n insertElement(e, sibling) {\n return elementRoutines.insertElement(e, sibling || topPadding.element);\n },\n\n insertElementAnimated(e, sibling) {\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\n },\n\n shouldLoadBottom() {\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\n },\n\n clipBottom() {\n // clip the invisible items off the bottom\n let overage = 0;\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n } else {\n let itemHeight = 0;\n let overageHeight = 0;\n\n for (let i = buffer.length - 1; i >= 0; i--) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n bottomPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n buffer.eof = false;\n buffer.remove(buffer.length - overage, buffer.length);\n buffer.next -= overage;\n viewport.adjustPaddings();\n }\n },\n\n shouldLoadTop() {\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\n },\n\n clipTop() {\n // clip the invisible items off the top\n let overage = 0;\n let overageHeight = 0;\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n overageHeight = overage * rowHeight;\n } else {\n let itemHeight = 0;\n\n for (let i = 0; i < buffer.length; i++) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n topPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n // we need to adjust top padding element before items are removed from top\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\n topPadding.height(topPadding.height() + overageHeight);\n buffer.bof = false;\n buffer.remove(0, overage);\n buffer.first += overage;\n }\n },\n\n // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position\n // and update the padding accordingly\n // It is designed to work with non fixed rowHeight, although it will need more tests in this area...\n scrollTo(first) {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n first = Math.min(Math.max(first, min),max);\n // Adjust the paddings before removing the elements to avoid touching the scroll top position\n topPadding.height((first-min)*rowHeight);\n bottomPadding.height(((max+1)-first)*rowHeight);\n buffer.resetStartIndex(first);\n } else {\n buffer.resetStartIndex(first);\n viewport.adjustPaddings();\n } \n },\n \n adjustPaddings() {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n topPadding.height((buffer.first-min)*rowHeight);\n // PHIL: next points to the next possible item, while max is the index of the last one.\n // In order to make them compatible, we should add one to max\n // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended\n // Not sure if this can have a consequence or not....\n bottomPadding.height(((max+1)-buffer.next)*rowHeight);\n return;\n }\n\n if (!buffer.length) {\n return;\n }\n\n // precise heights calculation based on items that are in buffer or that were in buffer once\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\n let topPaddingHeight = 0, topCount = 0;\n topPadding.cache.forEach(item => {\n if(item.index < buffer.first) {\n topPaddingHeight += item.height;\n topCount++;\n }\n });\n \n let bottomPaddingHeight = 0, bottomCount = 0;\n bottomPadding.cache.forEach(item => {\n if(item.index >= buffer.next) {\n bottomPaddingHeight += item.height;\n bottomCount++;\n }\n });\n \n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); \n\n // average heights calculation, items that have never been reached\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\n\n // paddings combine adjustment\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\n },\n\n onAfterMinIndexSet(topPaddingHeightOld) {\n // additional scrollTop adjustment in case of datasource.minIndex external set\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\n let diff = topPadding.height() - topPaddingHeightOld;\n viewport.scrollTop(viewport.scrollTop() + diff);\n while((diff -= viewport.scrollTop()) > 0) {\n bottomPadding.height(bottomPadding.height() + diff);\n viewport.scrollTop(viewport.scrollTop() + diff);\n }\n }\n },\n\n onAfterPrepend(updates) {\n if (!updates.prepended.length)\n return;\n const height = buffer.effectiveHeight(updates.prepended);\n const paddingHeight = topPadding.height() - height;\n if (paddingHeight >= 0) {\n topPadding.height(paddingHeight);\n }\n else {\n topPadding.height(0);\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\n }\n },\n\n resetTopPadding() {\n topPadding.height(0);\n if(topPadding.cache) {\n topPadding.cache.clear();\n }\n },\n\n resetBottomPadding() {\n bottomPadding.height(0);\n if(bottomPadding.cache) {\n bottomPadding.cache.clear();\n }\n },\n\n removeCacheItem(item, isTop) {\n if(topPadding.cache) {\n topPadding.cache.remove(item, isTop);\n }\n if(bottomPadding.cache) {\n bottomPadding.cache.remove(item, isTop);\n }\n },\n\n removeItem(item) {\n this.removeCacheItem(item);\n return buffer.remove(item);\n }\n });\n\n return viewport;\n}\n","class Adapter {\n\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\n this.$parse = $parse;\n this.$attr = $attr;\n this.viewport = viewport;\n this.buffer = buffer;\n\n this.doAdjust = doAdjust;\n this.reload = reload;\n\n this.isLoading = false;\n this.disabled = false;\n\n const viewportScope = viewport.getScope();\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\n\n this.publicContext = {};\n this.assignAdapter($attr.adapter);\n this.generatePublicContext();\n }\n\n assignAdapter(adapterAttr) {\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\n return;\n }\n let adapterOnScope;\n\n try {\n this.$parse(adapterAttr).assign(this.startScope, {});\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\n }\n catch (error) {\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\n `Can't parse \"${adapterAttr}\" expression.\\n` +\n error.message;\n throw error;\n }\n\n angular.extend(adapterOnScope, this.publicContext);\n this.publicContext = adapterOnScope;\n }\n\n generatePublicContext() {\n // these methods will be accessible out of ui-scroll via user defined adapter\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\n for (let i = publicMethods.length - 1; i >= 0; i--) {\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\n }\n\n // these read-only props will be accessible out of ui-scroll via user defined adapter\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\n for (let i = publicProps.length - 1; i >= 0; i--) {\n let property, attr = this.$attr[publicProps[i]];\n Object.defineProperty(this, publicProps[i], {\n get: () => property,\n set: (value) => {\n property = value;\n this.publicContext[publicProps[i]] = value;\n if (attr) {\n this.$parse(attr).assign(this.startScope, value);\n }\n }\n });\n }\n\n // read-only immediately calculated public properties\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\n get: () => this[publicPropsImmediate[i]]\n });\n }\n\n // non-read-only public property\n Object.defineProperty(this.publicContext, 'disabled', {\n get: () => this.disabled,\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\n });\n }\n\n loading(value) {\n this.isLoading = value;\n }\n\n isBOF() {\n return this.buffer.bof;\n }\n\n isEOF() {\n return this.buffer.eof;\n }\n\n isEmpty() {\n return !this.buffer.length;\n }\n\n get bufferLength() {\n return this.buffer.getItems().length;\n }\n\n get bufferFirst() {\n return this.buffer.getFirstItem();\n }\n\n get bufferLast() {\n return this.buffer.getLastItem();\n }\n\n append(newItems) {\n this.buffer.append(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n prepend(newItems) {\n this.buffer.prepend(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n applyUpdates(arg1, arg2, arg3) {\n if (typeof arg1 === 'function') {\n this.applyUpdatesFunc(arg1, arg2);\n if(arg2 && arg2.noAdjust) return;\n } else {\n this.applyUpdatesIndex(arg1, arg2, arg3);\n if(arg3 && arg3.noAdjust) return;\n }\n this.doAdjust();\n }\n\n applyUpdatesFunc(cb, options) {\n this.buffer.slice(0).forEach((wrapper) => {\n // we need to do it on the buffer clone, because buffer content\n // may change as we iterate through\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\n });\n }\n\n applyUpdatesIndex(index, newItems, options = {}) {\n if (index % 1 !== 0) {\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\n }\n const _index = index - this.buffer.first;\n\n // apply updates only within buffer\n if (_index >= 0 && _index < this.buffer.length) {\n this.applyUpdate(this.buffer[_index], newItems, options);\n }\n // out-of-buffer case: deletion may affect Paddings\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\n if(angular.isArray(newItems) && !newItems.length) {\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\n this.buffer.incrementMinIndex();\n }\n else {\n this.buffer.decrementMaxIndex();\n }\n }\n }\n }\n\n applyUpdate(wrapper, newItems, options = {}) {\n if (!angular.isArray(newItems)) {\n return;\n }\n let position = this.buffer.indexOf(wrapper);\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\n wrapper.op = 'remove';\n if (!options.immutableTop && position === 0 && !newItems.length) {\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\n }\n }\n newItems.forEach((newItem) => {\n if (newItem === wrapper.item) {\n position--;\n } else {\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\n }\n });\n }\n\n calculateProperties() {\n let rowTop = null, topHeight = 0;\n let topDone = false, bottomDone = false;\n const length = this.buffer.length;\n\n for (let i = 0; i < length; i++) {\n const item = this.buffer[i];\n const itemTop = item.element.offset().top;\n\n if (rowTop !== itemTop) { // a new row condition\n const itemHeight = item.element.outerHeight(true);\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\n\n if (!topDone && top > this.viewport.topVisiblePos()) {\n topDone = true;\n this['topVisible'] = item.item;\n this['topVisibleElement'] = item.element;\n this['topVisibleScope'] = item.scope;\n }\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\n bottomDone = true;\n this['bottomVisible'] = item.item;\n this['bottomVisibleElement'] = item.element;\n this['bottomVisibleScope'] = item.scope;\n }\n topHeight += itemHeight;\n }\n rowTop = itemTop;\n\n if (topDone && bottomDone) {\n break;\n }\n }\n }\n\n}\n\nexport default Adapter;\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n // Currently, we only debounce the scroll events when a fixed rowHeight is provided\n // as the unit tests will have to be adapted to support this feature\n let scPreviousScrollTop=-1;\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n // If a scroll event happened while the handler was not bounded, emit the scroll\n if(isPendingScroll()) {\n // Do it immediately\n _resizeAndScrollHandler();\n }\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n scPreviousScrollTop = -1; // Avoid isScrollPending() to be true\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function scrollTo(first) {\n unbindEvents();\n viewport.scrollTo(first);\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll\n // So we don't need to load top or bottom\n // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without\n // giving a chance to the scroll event to be emitted and processed.\n // We also do that if it leads to an absolute scroll\n if(isPendingScroll() && calculateAbsoluteScroll()!==undefined) {\n // Looks like the event is swallowed on some browsers (FF) on some scroll configuration\n resizeAndScrollHandler();\n return;\n }\n\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n // If there are no changes and the row-height is static, then ignore it!\n const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;\n if(changes || !rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function isPendingScroll() {\n if(rowHeight) {\n // Maybe the scroll changed but the event has *not* yet being dispatched\n // because of the $digest running and taking to long\n var sc = viewport.scrollTop();\n if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {\n return true;\n }\n }\n return false;\n }\n\n // Deboucing the scroll events avois intermediate $digest when scrolling fast\n let scTimer;\n function resizeAndScrollHandler() {\n if (rowHeight) {\n if (scTimer) clearTimeout(scTimer);\n scTimer = setTimeout(_resizeAndScrollHandler, 50);\n } else {\n _resizeAndScrollHandler();\n }\n }\n\n function _resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n // Absolute positioning currently only works when a fixed rowHeight is provided\n // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate\n // and provide a reasonable behavior with variable height as well\n if(rowHeight) {\n const newFirst = calculateAbsoluteScroll();\n if(newFirst!==undefined) {\n scrollTo(newFirst);\n return;\n }\n }\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function calculateAbsoluteScroll() {\n if(rowHeight) {\n scPreviousScrollTop = viewport.scrollTop();\n let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.getAbsMinIndex();\n newFirst = Math.max(buffer.getAbsMinIndex(), Math.min(buffer.getAbsMaxIndex(),newFirst)); // Bound the scroll\n if (newFirst
buffer.next+bufferSize) {\n return newFirst;\n } \n }\n return undefined;\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js
index b6b5d46e..483f5356 100644
--- a/dist/ui-scroll.min.js
+++ b/dist/ui-scroll.min.js
@@ -1,2 +1,2 @@
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diff --git a/dist/ui-scroll.min.js.map b/dist/ui-scroll.min.js.map
index 821f66bf..5c9174da 100644
--- a/dist/ui-scroll.min.js.map
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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""}
\ No newline at end of file
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<= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\n if (children[i] === elem) {\n angular.element(children[i - 1]).after(newElem);\n return;\n }\n }\n throw new Error('invalid DOM structure ' + elem.outerHTML);\n }\n },\n height (value){\n var self;\n self = this;\n if (typeof value !== 'undefined') {\n if (angular.isNumber(value)) {\n value = value + 'px';\n }\n return css.call(self, 'height', value);\n } else {\n return getWidthHeight(this[0], 'height', 'base');\n }\n },\n outerHeight(option) {\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\n },\n outerWidth(option) {\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\n },\n\n /*\n The offset setter method is not implemented\n */\n offset(value) {\n let docElem, win;\n let self = this;\n let box = {\n top: 0,\n left: 0\n };\n let elem = self[0];\n let doc = elem && elem.ownerDocument;\n\n if (arguments.length) {\n if (value === undefined) {\n return self;\n }\n // TODO: implement setter\n throw new Error('offset setter method is not implemented');\n }\n\n if (!doc) {\n return;\n }\n\n docElem = doc.documentElement;\n\n // TODO: Make sure it's not a disconnected DOM node\n\n if (elem.getBoundingClientRect != null) {\n box = elem.getBoundingClientRect();\n }\n\n win = doc.defaultView || doc.parentWindow;\n\n return {\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\n };\n },\n scrollTop(value) {\n return scrollTo(this, 'top', value);\n },\n scrollLeft(value) {\n return scrollTo(this, 'left', value);\n }\n }, (value, key) => {\n if (!element.prototype[key]) {\n return element.prototype[key] = value;\n }\n });\n }\n\n}\n","const hideClassToken = 'ng-ui-scroll-hide';\n\nexport default class ElementRoutines {\n\n static addCSSRules() {\n const selector = '.' + hideClassToken;\n const rules = 'display: none';\n const sheet = document.styleSheets[0];\n let index;\n try {\n index = sheet.cssRules.length;\n } catch (err) {\n index = 0;\n }\n if('insertRule' in sheet) {\n sheet.insertRule(selector + '{' + rules + '}', index);\n }\n else if('addRule' in sheet) {\n sheet.addRule(selector, rules, index);\n }\n }\n\n constructor($injector, $q) {\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\n this.$q = $q;\n }\n\n hideElement(wrapper) {\n wrapper.element.addClass(hideClassToken);\n }\n\n showElement(wrapper) {\n wrapper.element.removeClass(hideClassToken);\n }\n\n insertElement(newElement, previousElement) {\n previousElement.after(newElement);\n return [];\n }\n\n removeElement(wrapper) {\n wrapper.element.remove();\n wrapper.scope.$destroy();\n return [];\n }\n\n insertElementAnimated(newElement, previousElement) {\n if (!this.$animate) {\n return this.insertElement(newElement, previousElement);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n // no need for parent - previous element is never null\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\n\n return [deferred.promise];\n }\n\n // no need for parent - previous element is never null\n return [this.$animate.enter(newElement, null, previousElement)];\n }\n\n removeElementAnimated(wrapper) {\n if (!this.$animate) {\n return this.removeElement(wrapper);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n this.$animate.leave(wrapper.element, () => {\n wrapper.scope.$destroy();\n return deferred.resolve();\n });\n\n return [deferred.promise];\n }\n\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\n }\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\n const buffer = Object.create(Array.prototype);\n\n angular.extend(buffer, {\n size: bufferSize,\n\n reset(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = false;\n buffer.bof = false;\n buffer.first = startIndex;\n buffer.next = startIndex;\n buffer.minIndex = startIndex; // Calculated when data is effectively accessed\n buffer.maxIndex = startIndex;\n buffer.minIndexUser = null; // as set by the user (datasource)\n buffer.maxIndexUser = null;\n },\n \n // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max\n // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated\n // for a # of rows\n resetStartIndex: function resetStartIndex(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = buffer.eof && startIndex==buffer.maxIndex;\n buffer.bof = buffer.bof && startIndex==buffer.minIndex;\n buffer.first = startIndex;\n buffer.next = startIndex;\n },\n\n append(items) {\n items.forEach((item) => {\n ++buffer.next;\n buffer.insert('append', item);\n });\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\n },\n\n prepend(items) {\n items.reverse().forEach((item) => {\n --buffer.first;\n buffer.insert('prepend', item);\n });\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\n },\n\n /**\n * inserts wrapped element in the buffer\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\n * for insert the number is the index for the buffer element the new one have to be inserted after\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\n */\n insert(operation, item, isTop) {\n const wrapper = {\n item: item\n };\n\n if (operation % 1 === 0) {// it is an insert\n wrapper.op = 'insert';\n buffer.splice(operation, 0, wrapper);\n if(isTop) {\n buffer.first--;\n }\n else {\n buffer.next++;\n }\n } else {\n wrapper.op = operation;\n switch (operation) {\n case 'append':\n buffer.push(wrapper);\n break;\n case 'prepend':\n buffer.unshift(wrapper);\n break;\n }\n }\n },\n\n // removes elements from buffer\n remove(arg1, arg2) {\n if (angular.isNumber(arg1)) {\n // removes items from arg1 (including) through arg2 (excluding)\n for (let i = arg1; i < arg2; i++) {\n elementRoutines.removeElement(buffer[i]);\n }\n return buffer.splice(arg1, arg2 - arg1);\n }\n // removes single item(wrapper) from the buffer\n buffer.splice(buffer.indexOf(arg1), 1);\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\n this.incrementMinIndex();\n }\n else {\n this.decrementMaxIndex();\n }\n if(arg1._op === 'isTop') {\n buffer.first++;\n }\n else {\n buffer.next--;\n }\n if(!buffer.length) {\n buffer.first = buffer.minIndex%1 ? buffer.minIndex : startIndex;\n buffer.next = buffer.first;\n buffer.eof = buffer.eof && buffer.first==buffer.maxIndex;\n }\n\n return elementRoutines.removeElementAnimated(arg1);\n },\n\n incrementMinIndex() {\n if(buffer.minIndexUser !== null) {\n if(buffer.minIndex > buffer.minIndexUser) {\n buffer.minIndexUser++;\n return;\n }\n if(buffer.minIndex === buffer.minIndexUser) {\n buffer.minIndexUser++;\n }\n }\n buffer.minIndex++;\n },\n\n decrementMaxIndex() {\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\n buffer.maxIndexUser--;\n }\n buffer.maxIndex--;\n },\n\n getAbsMinIndex() {\n if(buffer.minIndexUser !== null) {\n return Math.min(buffer.minIndexUser, buffer.minIndex);\n }\n return buffer.minIndex;\n },\n\n getAbsMaxIndex() {\n if(buffer.maxIndexUser !== null) {\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\n }\n return buffer.maxIndex;\n },\n\n effectiveHeight(elements) {\n if (!elements.length) {\n return 0;\n }\n let top = Number.MAX_VALUE;\n let bottom = Number.NEGATIVE_INFINITY;\n elements.forEach((wrapper) => {\n if (wrapper.element[0].offsetParent) {\n // element style is not display:none\n top = Math.min(top, wrapper.element.offset().top);\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));\n }\n });\n return Math.max(0, bottom - top);\n },\n\n getItems() {\n return buffer.filter(item => item.op === 'none');\n },\n\n getFirstItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[0].item;\n },\n\n getLastItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[list.length - 1].item;\n }\n\n });\n\n buffer.reset(startIndex);\n\n return buffer;\n}\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\nclass CacheProto {\n add(item) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === item.scope.$index) {\n this[i].height = item.element.outerHeight();\n return;\n }\n }\n this.push({\n index: item.scope.$index,\n height: item.element.outerHeight()\n });\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\n }\n\n remove(argument, _isTop) {\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === index) {\n this.splice(i, 1);\n break;\n }\n }\n if(!isTop) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index > index) {\n this[i].index--;\n }\n }\n }\n }\n\n clear() {\n this.length = 0;\n }\n}\n\nfunction Cache() {\n const instance = [];\n instance.push.apply(instance, arguments);\n Object.setPrototypeOf(instance, Cache.prototype);\n return instance;\n}\nCache.prototype = Object.create(Array.prototype);\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\n);\n\nfunction generateElement(template) {\n if(template.nodeType !== Node.ELEMENT_NODE) {\n throw new Error('ui-scroll directive requires an Element node for templating the view');\n }\n let element;\n switch (template.tagName.toLowerCase()) {\n case 'dl':\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\n case 'tr':\n let table = angular.element('');\n element = table.find('tr');\n break;\n case 'li':\n element = angular.element('
');\n }\n return element;\n}\n\n//\n// Padding represents the dummy element added to both the top and the bottom of the scrolling container\n// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the \n// cache is not used and thus is not created.\n//\nclass Padding {\n constructor(template,useCache) {\n this.element = generateElement(template);\n if(useCache) {\n this.cache = new Cache();\n }\n }\n\n height() {\n // When called with a parameter, this sets the height of the padding\n return this.element.height.apply(this.element, arguments);\n }\n}\n\nexport default Padding;","import Padding from './padding';\n\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\n let topPadding = null;\n let bottomPadding = null;\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\n\n viewport.css({\n 'overflow-anchor': 'none',\n 'overflow-y': 'auto',\n 'display': 'block'\n });\n\n function bufferPadding() {\n return viewport.outerHeight() * padding; // some extra space to initiate preload\n }\n\n // \n // Viewport measurements\n //\n // +----------------+ 0\n // | top |\n // | padding |\n // +----------------+ topDataPos() [=topPadding.height]\n // | not visible |\n // | items |\n // +----------------+ topVisiblePos() [=viewport.scrollTop]\n // | |\n // | visible |\n // | items |\n // | |\n // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]\n // | not visible |\n // | items |\n // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]\n // | bottom |\n // | padding |\n // +----------------+ scrollHeight \n //\n // bufferPadding is some extra space we have top & bottom to allow infinite scrolling\n // bufferPadding = viewport.outerHeight() * padding\n //\n // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()\n \n\n angular.extend(viewport, {\n getScope() {\n return scope;\n },\n\n createPaddingElements(template) {\n topPadding = new Padding(template,!rowHeight);\n bottomPadding = new Padding(template,!rowHeight);\n element.before(topPadding.element);\n element.after(bottomPadding.element);\n topPadding.height(0);\n bottomPadding.height(0);\n },\n\n applyContainerStyle() {\n if (!container) {\n return true;\n }\n if(container !== viewport) {\n viewport.css('height', window.getComputedStyle(container[0]).height);\n }\n return viewport.height() > 0;\n },\n\n bottomDataPos() {\n let scrollHeight = viewport[0].scrollHeight;\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\n return scrollHeight - bottomPadding.height();\n },\n\n topDataPos() {\n return topPadding.height();\n },\n\n bottomVisiblePos() {\n return viewport.scrollTop() + viewport.outerHeight();\n },\n\n topVisiblePos() {\n return viewport.scrollTop();\n },\n\n insertElement(e, sibling) {\n return elementRoutines.insertElement(e, sibling || topPadding.element);\n },\n\n insertElementAnimated(e, sibling) {\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\n },\n\n shouldLoadBottom() {\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\n },\n\n clipBottom() {\n // clip the invisible items off the bottom\n let overage = 0;\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n } else {\n let itemHeight = 0;\n let overageHeight = 0;\n\n for (let i = buffer.length - 1; i >= 0; i--) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n bottomPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n buffer.eof = false;\n buffer.remove(buffer.length - overage, buffer.length);\n buffer.next -= overage;\n viewport.adjustPaddings();\n }\n },\n\n shouldLoadTop() {\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\n },\n\n clipTop() {\n // clip the invisible items off the top\n let overage = 0;\n let overageHeight = 0;\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n overageHeight = overage * rowHeight;\n } else {\n let itemHeight = 0;\n\n for (let i = 0; i < buffer.length; i++) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n topPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n // we need to adjust top padding element before items are removed from top\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\n topPadding.height(topPadding.height() + overageHeight);\n buffer.bof = false;\n buffer.remove(0, overage);\n buffer.first += overage;\n }\n },\n\n // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position\n // and update the padding accordingly\n // It is designed to work with non fixed rowHeight, although it will need more tests in this area...\n scrollTo(first) {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n first = Math.min(Math.max(first, min),max);\n // Adjust the paddings before removing the elements to avoid touching the scroll top position\n topPadding.height((first-min)*rowHeight);\n bottomPadding.height(((max+1)-first)*rowHeight);\n buffer.resetStartIndex(first);\n } else {\n buffer.resetStartIndex(first);\n viewport.adjustPaddings();\n } \n },\n \n adjustPaddings() {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n topPadding.height((buffer.first-min)*rowHeight);\n // PHIL: next points to the next possible item, while max is the index of the last one.\n // In order to make them compatible, we should add one to max\n // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended\n // Not sure if this can have a consequence or not....\n bottomPadding.height(((max+1)-buffer.next)*rowHeight);\n return;\n }\n\n if (!buffer.length) {\n return;\n }\n\n // precise heights calculation based on items that are in buffer or that were in buffer once\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\n let topPaddingHeight = 0, topCount = 0;\n topPadding.cache.forEach(item => {\n if(item.index < buffer.first) {\n topPaddingHeight += item.height;\n topCount++;\n }\n });\n \n let bottomPaddingHeight = 0, bottomCount = 0;\n bottomPadding.cache.forEach(item => {\n if(item.index >= buffer.next) {\n bottomPaddingHeight += item.height;\n bottomCount++;\n }\n });\n \n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); \n\n // average heights calculation, items that have never been reached\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\n\n // paddings combine adjustment\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\n },\n\n onAfterMinIndexSet(topPaddingHeightOld) {\n // additional scrollTop adjustment in case of datasource.minIndex external set\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\n let diff = topPadding.height() - topPaddingHeightOld;\n viewport.scrollTop(viewport.scrollTop() + diff);\n while((diff -= viewport.scrollTop()) > 0) {\n bottomPadding.height(bottomPadding.height() + diff);\n viewport.scrollTop(viewport.scrollTop() + diff);\n }\n }\n },\n\n onAfterPrepend(updates) {\n if (!updates.prepended.length)\n return;\n const height = buffer.effectiveHeight(updates.prepended);\n const paddingHeight = topPadding.height() - height;\n if (paddingHeight >= 0) {\n topPadding.height(paddingHeight);\n }\n else {\n topPadding.height(0);\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\n }\n },\n\n resetTopPadding() {\n topPadding.height(0);\n if(topPadding.cache) {\n topPadding.cache.clear();\n }\n },\n\n resetBottomPadding() {\n bottomPadding.height(0);\n if(bottomPadding.cache) {\n bottomPadding.cache.clear();\n }\n },\n\n removeCacheItem(item, isTop) {\n if(topPadding.cache) {\n topPadding.cache.remove(item, isTop);\n }\n if(bottomPadding.cache) {\n bottomPadding.cache.remove(item, isTop);\n }\n },\n\n removeItem(item) {\n this.removeCacheItem(item);\n return buffer.remove(item);\n }\n });\n\n return viewport;\n}\n","class Adapter {\n\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\n this.$parse = $parse;\n this.$attr = $attr;\n this.viewport = viewport;\n this.buffer = buffer;\n\n this.doAdjust = doAdjust;\n this.reload = reload;\n\n this.isLoading = false;\n this.disabled = false;\n\n const viewportScope = viewport.getScope();\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\n\n this.publicContext = {};\n this.assignAdapter($attr.adapter);\n this.generatePublicContext();\n }\n\n assignAdapter(adapterAttr) {\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\n return;\n }\n let adapterOnScope;\n\n try {\n this.$parse(adapterAttr).assign(this.startScope, {});\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\n }\n catch (error) {\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\n `Can't parse \"${adapterAttr}\" expression.\\n` +\n error.message;\n throw error;\n }\n\n angular.extend(adapterOnScope, this.publicContext);\n this.publicContext = adapterOnScope;\n }\n\n generatePublicContext() {\n // these methods will be accessible out of ui-scroll via user defined adapter\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\n for (let i = publicMethods.length - 1; i >= 0; i--) {\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\n }\n\n // these read-only props will be accessible out of ui-scroll via user defined adapter\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\n for (let i = publicProps.length - 1; i >= 0; i--) {\n let property, attr = this.$attr[publicProps[i]];\n Object.defineProperty(this, publicProps[i], {\n get: () => property,\n set: (value) => {\n property = value;\n this.publicContext[publicProps[i]] = value;\n if (attr) {\n this.$parse(attr).assign(this.startScope, value);\n }\n }\n });\n }\n\n // read-only immediately calculated public properties\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\n get: () => this[publicPropsImmediate[i]]\n });\n }\n\n // non-read-only public property\n Object.defineProperty(this.publicContext, 'disabled', {\n get: () => this.disabled,\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\n });\n }\n\n loading(value) {\n this.isLoading = value;\n }\n\n isBOF() {\n return this.buffer.bof;\n }\n\n isEOF() {\n return this.buffer.eof;\n }\n\n isEmpty() {\n return !this.buffer.length;\n }\n\n get bufferLength() {\n return this.buffer.getItems().length;\n }\n\n get bufferFirst() {\n return this.buffer.getFirstItem();\n }\n\n get bufferLast() {\n return this.buffer.getLastItem();\n }\n\n append(newItems) {\n this.buffer.append(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n prepend(newItems) {\n this.buffer.prepend(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n applyUpdates(arg1, arg2, arg3) {\n if (typeof arg1 === 'function') {\n this.applyUpdatesFunc(arg1, arg2);\n if(arg2 && arg2.noAdjust) return;\n } else {\n this.applyUpdatesIndex(arg1, arg2, arg3);\n if(arg3 && arg3.noAdjust) return;\n }\n this.doAdjust();\n }\n\n applyUpdatesFunc(cb, options) {\n this.buffer.slice(0).forEach((wrapper) => {\n // we need to do it on the buffer clone, because buffer content\n // may change as we iterate through\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\n });\n }\n\n applyUpdatesIndex(index, newItems, options = {}) {\n if (index % 1 !== 0) {\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\n }\n const _index = index - this.buffer.first;\n\n // apply updates only within buffer\n if (_index >= 0 && _index < this.buffer.length) {\n this.applyUpdate(this.buffer[_index], newItems, options);\n }\n // out-of-buffer case: deletion may affect Paddings\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\n if(angular.isArray(newItems) && !newItems.length) {\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\n this.buffer.incrementMinIndex();\n }\n else {\n this.buffer.decrementMaxIndex();\n }\n }\n }\n }\n\n applyUpdate(wrapper, newItems, options = {}) {\n if (!angular.isArray(newItems)) {\n return;\n }\n let position = this.buffer.indexOf(wrapper);\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\n wrapper.op = 'remove';\n if (!options.immutableTop && position === 0 && !newItems.length) {\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\n }\n }\n newItems.forEach((newItem) => {\n if (newItem === wrapper.item) {\n position--;\n } else {\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\n }\n });\n }\n\n calculateProperties() {\n let rowTop = null, topHeight = 0;\n let topDone = false, bottomDone = false;\n const length = this.buffer.length;\n\n for (let i = 0; i < length; i++) {\n const item = this.buffer[i];\n const itemTop = item.element.offset().top;\n\n if (rowTop !== itemTop) { // a new row condition\n const itemHeight = item.element.outerHeight(true);\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\n\n if (!topDone && top > this.viewport.topVisiblePos()) {\n topDone = true;\n this['topVisible'] = item.item;\n this['topVisibleElement'] = item.element;\n this['topVisibleScope'] = item.scope;\n }\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\n bottomDone = true;\n this['bottomVisible'] = item.item;\n this['bottomVisibleElement'] = item.element;\n this['bottomVisibleScope'] = item.scope;\n }\n topHeight += itemHeight;\n }\n rowTop = itemTop;\n\n if (topDone && bottomDone) {\n break;\n }\n }\n }\n\n}\n\nexport default Adapter;\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n // Currently, we only debounce the scroll events when a fixed rowHeight is provided\n // as the unit tests will have to be adapted to support this feature\n let scPreviousScrollTop=-1;\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n // If a scroll event happened while the handler was not bounded, emit the scroll\n if(isPendingScroll()) {\n // Do it immediately\n _resizeAndScrollHandler();\n }\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n scPreviousScrollTop = -1; // Avoid isScrollPending() to be true\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function scrollTo(first) {\n unbindEvents();\n viewport.scrollTo(first);\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll\n // So we don't need to load top or bottom\n // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without\n // giving a chance to the scroll event to be emitted and processed.\n // We also do that if it leads to an absolute scroll\n if(isPendingScroll() && calculateAbsoluteScroll()!==undefined) {\n // Looks like the event is swallowed on some browsers (FF) on some scroll configuration\n resizeAndScrollHandler();\n return;\n }\n\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n // If there are no changes and the row-height is static, then ignore it!\n const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;\n if(changes || !rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function isPendingScroll() {\n if(rowHeight) {\n // Maybe the scroll changed but the event has *not* yet being dispatched\n // because of the $digest running and taking to long\n var sc = viewport.scrollTop();\n if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {\n return true;\n }\n }\n return false;\n }\n\n // Deboucing the scroll events avois intermediate $digest when scrolling fast\n let scTimer;\n function resizeAndScrollHandler() {\n if (rowHeight) {\n if (scTimer) clearTimeout(scTimer);\n scTimer = setTimeout(_resizeAndScrollHandler, 50);\n } else {\n _resizeAndScrollHandler();\n }\n }\n\n function _resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n // Absolute positioning currently only works when a fixed rowHeight is provided\n // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate\n // and provide a reasonable behavior with variable height as well\n if(rowHeight) {\n const newFirst = calculateAbsoluteScroll();\n if(newFirst!==undefined) {\n scrollTo(newFirst);\n return;\n }\n }\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function calculateAbsoluteScroll() {\n if(rowHeight) {\n scPreviousScrollTop = viewport.scrollTop();\n let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.getAbsMinIndex();\n newFirst = Math.max(buffer.getAbsMinIndex(), Math.min(buffer.getAbsMaxIndex(),newFirst)); // Bound the scroll\n if (newFirstbuffer.next+bufferSize) {\n return newFirst;\n } \n }\n return undefined;\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 5cac9765..d7cda5ec 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
{
"name": "angular-ui-scroll",
- "version": "1.7.3",
+ "version": "1.7.4",
"lockfileVersion": 1,
"requires": true,
"dependencies": {
@@ -3288,8 +3288,7 @@
"version": "2.1.1",
"resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
"integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
- "dev": true,
- "optional": true
+ "dev": true
},
"aproba": {
"version": "1.2.0",
@@ -3313,15 +3312,13 @@
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
"integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
- "dev": true,
- "optional": true
+ "dev": true
},
"brace-expansion": {
"version": "1.1.11",
"resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
"integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
"dev": true,
- "optional": true,
"requires": {
"balanced-match": "^1.0.0",
"concat-map": "0.0.1"
@@ -3338,22 +3335,19 @@
"version": "1.1.0",
"resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
"integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
- "dev": true,
- "optional": true
+ "dev": true
},
"concat-map": {
"version": "0.0.1",
"resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
"integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
- "dev": true,
- "optional": true
+ "dev": true
},
"console-control-strings": {
"version": "1.1.0",
"resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
"integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
- "dev": true,
- "optional": true
+ "dev": true
},
"core-util-is": {
"version": "1.0.2",
@@ -3484,8 +3478,7 @@
"version": "2.0.3",
"resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
"integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
- "dev": true,
- "optional": true
+ "dev": true
},
"ini": {
"version": "1.3.5",
@@ -3499,7 +3492,6 @@
"resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
"integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
"dev": true,
- "optional": true,
"requires": {
"number-is-nan": "^1.0.0"
}
@@ -3516,7 +3508,6 @@
"resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
"integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
"dev": true,
- "optional": true,
"requires": {
"brace-expansion": "^1.1.7"
}
@@ -3525,15 +3516,13 @@
"version": "0.0.8",
"resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
"integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
- "dev": true,
- "optional": true
+ "dev": true
},
"minipass": {
"version": "2.3.5",
"resolved": "https://registry.npmjs.org/minipass/-/minipass-2.3.5.tgz",
"integrity": "sha512-Gi1W4k059gyRbyVUZQ4mEqLm0YIUiGYfvxhF6SIlk3ui1WVxMTGfGdQ2SInh3PDrRTVvPKgULkpJtT4RH10+VA==",
"dev": true,
- "optional": true,
"requires": {
"safe-buffer": "^5.1.2",
"yallist": "^3.0.0"
@@ -3554,7 +3543,6 @@
"resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
"integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
"dev": true,
- "optional": true,
"requires": {
"minimist": "0.0.8"
}
@@ -3643,8 +3631,7 @@
"version": "1.0.1",
"resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
"integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
- "dev": true,
- "optional": true
+ "dev": true
},
"object-assign": {
"version": "4.1.1",
@@ -3658,7 +3645,6 @@
"resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
"integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
"dev": true,
- "optional": true,
"requires": {
"wrappy": "1"
}
@@ -3754,8 +3740,7 @@
"version": "5.1.2",
"resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
"integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
- "dev": true,
- "optional": true
+ "dev": true
},
"safer-buffer": {
"version": "2.1.2",
@@ -3797,7 +3782,6 @@
"resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
"integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
"dev": true,
- "optional": true,
"requires": {
"code-point-at": "^1.0.0",
"is-fullwidth-code-point": "^1.0.0",
@@ -3819,7 +3803,6 @@
"resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
"integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
"dev": true,
- "optional": true,
"requires": {
"ansi-regex": "^2.0.0"
}
@@ -3868,15 +3851,13 @@
"version": "1.0.2",
"resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
"integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
- "dev": true,
- "optional": true
+ "dev": true
},
"yallist": {
"version": "3.0.3",
"resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
"integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
- "dev": true,
- "optional": true
+ "dev": true
}
}
},
diff --git a/package.json b/package.json
index 90f7b02e..fa219e3a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
{
"name": "angular-ui-scroll",
"description": "AngularJS infinite scrolling module",
- "version": "1.7.3",
+ "version": "1.7.4",
"src": "./src/",
"public": "./dist/",
"main": "./dist/ui-scroll.js",
@@ -26,6 +26,7 @@
"hint-test": "jshint --verbose test",
"hint-src": "jshint --verbose src",
"build": "npm run hint-src && npm run prod-build && npm run hint-test && npm run prod-test",
+ "build-dev": "npm run hint-src && npm run prod-build",
"dev": "npm-run-all --parallel dev-server dev-test",
"test": "npm run dev-test",
"start": "npm run dev-server"
diff --git a/src/modules/adapter.js b/src/modules/adapter.js
index 09e8767a..d37115f8 100644
--- a/src/modules/adapter.js
+++ b/src/modules/adapter.js
@@ -1,203 +1,225 @@
-class Adapter {
-
- constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {
- this.$parse = $parse;
- this.$attr = $attr;
- this.viewport = viewport;
- this.buffer = buffer;
-
- this.doAdjust = doAdjust;
- this.reload = reload;
-
- this.isLoading = false;
- this.disabled = false;
-
- const viewportScope = viewport.getScope();
- this.startScope = viewportScope.$parent ? viewportScope : $scope;
-
- this.publicContext = {};
- this.assignAdapter($attr.adapter);
- this.generatePublicContext();
- }
-
- assignAdapter(adapterAttr) {
- if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\s+|\s+$/gm, ''))) {
- return;
- }
- let adapterOnScope;
-
- try {
- this.$parse(adapterAttr).assign(this.startScope, {});
- adapterOnScope = this.$parse(adapterAttr)(this.startScope);
- }
- catch (error) {
- error.message = `Angular ui-scroll Adapter assignment exception.\n` +
- `Can't parse "${adapterAttr}" expression.\n` +
- error.message;
- throw error;
- }
-
- angular.extend(adapterOnScope, this.publicContext);
- this.publicContext = adapterOnScope;
- }
-
- generatePublicContext() {
- // these methods will be accessible out of ui-scroll via user defined adapter
- const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];
- for (let i = publicMethods.length - 1; i >= 0; i--) {
- this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);
- }
-
- // these read-only props will be accessible out of ui-scroll via user defined adapter
- const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];
- for (let i = publicProps.length - 1; i >= 0; i--) {
- let property, attr = this.$attr[publicProps[i]];
- Object.defineProperty(this, publicProps[i], {
- get: () => property,
- set: (value) => {
- property = value;
- this.publicContext[publicProps[i]] = value;
- if (attr) {
- this.$parse(attr).assign(this.startScope, value);
- }
- }
- });
- }
-
- // non-read-only public property
- Object.defineProperty(this.publicContext, 'disabled', {
- get: () => this.disabled,
- set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null
- });
- }
-
- loading(value) {
- this.isLoading = value;
- }
-
- isBOF() {
- return this.buffer.bof;
- }
-
- isEOF() {
- return this.buffer.eof;
- }
-
- isEmpty() {
- return !this.buffer.length;
- }
-
- append(newItems) {
- this.buffer.append(newItems);
- this.doAdjust();
- this.viewport.clipTop();
- this.viewport.clipBottom();
- }
-
- prepend(newItems) {
- this.buffer.prepend(newItems);
- this.doAdjust();
- this.viewport.clipTop();
- this.viewport.clipBottom();
- }
-
- applyUpdates(arg1, arg2) {
- if (typeof arg1 === 'function') {
- this.applyUpdatesFunc(arg1);
- } else {
- this.applyUpdatesIndex(arg1, arg2);
- }
- this.doAdjust();
- }
-
- applyUpdatesFunc(cb) {
- this.buffer.slice(0).forEach((wrapper) => {
- // we need to do it on the buffer clone, because buffer content
- // may change as we iterate through
- this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));
- });
- }
-
- applyUpdatesIndex(index, newItems) {
- if (index % 1 !== 0) {
- throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');
- }
- const _index = index - this.buffer.first;
-
- // apply updates only within buffer
- if (_index >= 0 && _index < this.buffer.length) {
- this.applyUpdate(this.buffer[_index], newItems);
- }
- // out-of-buffer case: deletion may affect Paddings
- else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {
- if(angular.isArray(newItems) && !newItems.length) {
- this.viewport.removeCacheItem(index, index === this.buffer.minIndex);
- if(index === this.buffer.getAbsMinIndex()) {
- this.buffer.incrementMinIndex();
- }
- else {
- this.buffer.decrementMaxIndex();
- }
- }
- }
- }
-
- applyUpdate(wrapper, newItems) {
- if (!angular.isArray(newItems)) {
- return;
- }
- let position = this.buffer.indexOf(wrapper);
- if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {
- wrapper.op = 'remove';
- if(position === 0 && !newItems.length) {
- wrapper._op = 'isTop'; // to catch "first" edge case on remove
- }
- }
- newItems.forEach((newItem) => {
- if (newItem === wrapper.item) {
- position--;
- } else {
- // 3 parameter (isTop) is to catch "first" edge case on insert
- this.buffer.insert(position + 1, newItem, position === -1);
- }
- });
- }
-
- calculateProperties() {
- let rowTop = null, topHeight = 0;
- let topDone = false, bottomDone = false;
- const length = this.buffer.length;
-
- for (let i = 0; i < length; i++) {
- const item = this.buffer[i];
- const itemTop = item.element.offset().top;
-
- if (rowTop !== itemTop) { // a new row condition
- const itemHeight = item.element.outerHeight(true);
- const top = this.viewport.topDataPos() + topHeight + itemHeight;
-
- if (!topDone && top > this.viewport.topVisiblePos()) {
- topDone = true;
- this['topVisible'] = item.item;
- this['topVisibleElement'] = item.element;
- this['topVisibleScope'] = item.scope;
- }
- if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {
- bottomDone = true;
- this['bottomVisible'] = item.item;
- this['bottomVisibleElement'] = item.element;
- this['bottomVisibleScope'] = item.scope;
- }
- topHeight += itemHeight;
- }
- rowTop = itemTop;
-
- if (topDone && bottomDone) {
- break;
- }
- }
- }
-
-}
-
-export default Adapter;
+class Adapter {
+
+ constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {
+ this.$parse = $parse;
+ this.$attr = $attr;
+ this.viewport = viewport;
+ this.buffer = buffer;
+
+ this.doAdjust = doAdjust;
+ this.reload = reload;
+
+ this.isLoading = false;
+ this.disabled = false;
+
+ const viewportScope = viewport.getScope();
+ this.startScope = viewportScope.$parent ? viewportScope : $scope;
+
+ this.publicContext = {};
+ this.assignAdapter($attr.adapter);
+ this.generatePublicContext();
+ }
+
+ assignAdapter(adapterAttr) {
+ if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\s+|\s+$/gm, ''))) {
+ return;
+ }
+ let adapterOnScope;
+
+ try {
+ this.$parse(adapterAttr).assign(this.startScope, {});
+ adapterOnScope = this.$parse(adapterAttr)(this.startScope);
+ }
+ catch (error) {
+ error.message = `Angular ui-scroll Adapter assignment exception.\n` +
+ `Can't parse "${adapterAttr}" expression.\n` +
+ error.message;
+ throw error;
+ }
+
+ angular.extend(adapterOnScope, this.publicContext);
+ this.publicContext = adapterOnScope;
+ }
+
+ generatePublicContext() {
+ // these methods will be accessible out of ui-scroll via user defined adapter
+ const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];
+ for (let i = publicMethods.length - 1; i >= 0; i--) {
+ this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);
+ }
+
+ // these read-only props will be accessible out of ui-scroll via user defined adapter
+ const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];
+ for (let i = publicProps.length - 1; i >= 0; i--) {
+ let property, attr = this.$attr[publicProps[i]];
+ Object.defineProperty(this, publicProps[i], {
+ get: () => property,
+ set: (value) => {
+ property = value;
+ this.publicContext[publicProps[i]] = value;
+ if (attr) {
+ this.$parse(attr).assign(this.startScope, value);
+ }
+ }
+ });
+ }
+
+ // read-only immediately calculated public properties
+ const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];
+ for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {
+ Object.defineProperty(this.publicContext, publicPropsImmediate[i], {
+ get: () => this[publicPropsImmediate[i]]
+ });
+ }
+
+ // non-read-only public property
+ Object.defineProperty(this.publicContext, 'disabled', {
+ get: () => this.disabled,
+ set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null
+ });
+ }
+
+ loading(value) {
+ this.isLoading = value;
+ }
+
+ isBOF() {
+ return this.buffer.bof;
+ }
+
+ isEOF() {
+ return this.buffer.eof;
+ }
+
+ isEmpty() {
+ return !this.buffer.length;
+ }
+
+ get bufferLength() {
+ return this.buffer.getItems().length;
+ }
+
+ get bufferFirst() {
+ return this.buffer.getFirstItem();
+ }
+
+ get bufferLast() {
+ return this.buffer.getLastItem();
+ }
+
+ append(newItems) {
+ this.buffer.append(newItems);
+ this.doAdjust();
+ this.viewport.clipTop();
+ this.viewport.clipBottom();
+ }
+
+ prepend(newItems) {
+ this.buffer.prepend(newItems);
+ this.doAdjust();
+ this.viewport.clipTop();
+ this.viewport.clipBottom();
+ }
+
+ applyUpdates(arg1, arg2, arg3) {
+ if (typeof arg1 === 'function') {
+ this.applyUpdatesFunc(arg1, arg2);
+ if(arg2 && arg2.noAdjust) return;
+ } else {
+ this.applyUpdatesIndex(arg1, arg2, arg3);
+ if(arg3 && arg3.noAdjust) return;
+ }
+ this.doAdjust();
+ }
+
+ applyUpdatesFunc(cb, options) {
+ this.buffer.slice(0).forEach((wrapper) => {
+ // we need to do it on the buffer clone, because buffer content
+ // may change as we iterate through
+ this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);
+ });
+ }
+
+ applyUpdatesIndex(index, newItems, options = {}) {
+ if (index % 1 !== 0) {
+ throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');
+ }
+ const _index = index - this.buffer.first;
+
+ // apply updates only within buffer
+ if (_index >= 0 && _index < this.buffer.length) {
+ this.applyUpdate(this.buffer[_index], newItems, options);
+ }
+ // out-of-buffer case: deletion may affect Paddings
+ else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {
+ if(angular.isArray(newItems) && !newItems.length) {
+ this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);
+ if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {
+ this.buffer.incrementMinIndex();
+ }
+ else {
+ this.buffer.decrementMaxIndex();
+ }
+ }
+ }
+ }
+
+ applyUpdate(wrapper, newItems, options = {}) {
+ if (!angular.isArray(newItems)) {
+ return;
+ }
+ let position = this.buffer.indexOf(wrapper);
+ if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {
+ wrapper.op = 'remove';
+ if (!options.immutableTop && position === 0 && !newItems.length) {
+ wrapper._op = 'isTop'; // to catch "first" edge case on remove
+ }
+ }
+ newItems.forEach((newItem) => {
+ if (newItem === wrapper.item) {
+ position--;
+ } else {
+ // 3 parameter (isTop) is to catch "first" edge case on insert
+ this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);
+ }
+ });
+ }
+
+ calculateProperties() {
+ let rowTop = null, topHeight = 0;
+ let topDone = false, bottomDone = false;
+ const length = this.buffer.length;
+
+ for (let i = 0; i < length; i++) {
+ const item = this.buffer[i];
+ const itemTop = item.element.offset().top;
+
+ if (rowTop !== itemTop) { // a new row condition
+ const itemHeight = item.element.outerHeight(true);
+ const top = this.viewport.topDataPos() + topHeight + itemHeight;
+
+ if (!topDone && top > this.viewport.topVisiblePos()) {
+ topDone = true;
+ this['topVisible'] = item.item;
+ this['topVisibleElement'] = item.element;
+ this['topVisibleScope'] = item.scope;
+ }
+ if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {
+ bottomDone = true;
+ this['bottomVisible'] = item.item;
+ this['bottomVisibleElement'] = item.element;
+ this['bottomVisibleScope'] = item.scope;
+ }
+ topHeight += itemHeight;
+ }
+ rowTop = itemTop;
+
+ if (topDone && bottomDone) {
+ break;
+ }
+ }
+ }
+
+}
+
+export default Adapter;
diff --git a/src/modules/buffer.js b/src/modules/buffer.js
index 866afe17..71c7b875 100644
--- a/src/modules/buffer.js
+++ b/src/modules/buffer.js
@@ -1,154 +1,186 @@
-export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {
- const buffer = Object.create(Array.prototype);
-
- angular.extend(buffer, {
- size: bufferSize,
-
- reset(startIndex) {
- buffer.remove(0, buffer.length);
- buffer.eof = false;
- buffer.bof = false;
- buffer.first = startIndex;
- buffer.next = startIndex;
- buffer.minIndex = startIndex;
- buffer.maxIndex = startIndex;
- buffer.minIndexUser = null;
- buffer.maxIndexUser = null;
- },
-
- append(items) {
- items.forEach((item) => {
- ++buffer.next;
- buffer.insert('append', item);
- });
- buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);
- },
-
- prepend(items) {
- items.reverse().forEach((item) => {
- --buffer.first;
- buffer.insert('prepend', item);
- });
- buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);
- },
-
- /**
- * inserts wrapped element in the buffer
- * the first argument is either operation keyword (see below) or a number for operation 'insert'
- * for insert the number is the index for the buffer element the new one have to be inserted after
- * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'
- */
- insert(operation, item, isTop) {
- const wrapper = {
- item: item
- };
-
- if (operation % 1 === 0) {// it is an insert
- wrapper.op = 'insert';
- buffer.splice(operation, 0, wrapper);
- if(isTop) {
- buffer.first--;
- }
- else {
- buffer.next++;
- }
- } else {
- wrapper.op = operation;
- switch (operation) {
- case 'append':
- buffer.push(wrapper);
- break;
- case 'prepend':
- buffer.unshift(wrapper);
- break;
- }
- }
- },
-
- // removes elements from buffer
- remove(arg1, arg2) {
- if (angular.isNumber(arg1)) {
- // removes items from arg1 (including) through arg2 (excluding)
- for (let i = arg1; i < arg2; i++) {
- elementRoutines.removeElement(buffer[i]);
- }
- return buffer.splice(arg1, arg2 - arg1);
- }
- // removes single item(wrapper) from the buffer
- buffer.splice(buffer.indexOf(arg1), 1);
- if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {
- this.incrementMinIndex();
- }
- else {
- this.decrementMaxIndex();
- }
- if(arg1._op === 'isTop') {
- buffer.first++;
- }
- else {
- buffer.next--;
- }
- if(!buffer.length) {
- buffer.first = 1;
- buffer.next = 1;
- }
-
- return elementRoutines.removeElementAnimated(arg1);
- },
-
- incrementMinIndex() {
- if(buffer.minIndexUser !== null) {
- if(buffer.minIndex > buffer.minIndexUser) {
- buffer.minIndexUser++;
- return;
- }
- if(buffer.minIndex === buffer.minIndexUser) {
- buffer.minIndexUser++;
- }
- }
- buffer.minIndex++;
- },
-
- decrementMaxIndex() {
- if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {
- buffer.maxIndexUser--;
- }
- buffer.maxIndex--;
- },
-
- getAbsMinIndex() {
- if(buffer.minIndexUser !== null) {
- return Math.min(buffer.minIndexUser, buffer.minIndex);
- }
- return buffer.minIndex;
- },
-
- getAbsMaxIndex() {
- if(buffer.maxIndexUser !== null) {
- return Math.max(buffer.maxIndexUser, buffer.maxIndex);
- }
- return buffer.maxIndex;
- },
-
- effectiveHeight(elements) {
- if (!elements.length) {
- return 0;
- }
- let top = Number.MAX_VALUE;
- let bottom = Number.NEGATIVE_INFINITY;
- elements.forEach((wrapper) => {
- if (wrapper.element[0].offsetParent) {
- // element style is not display:none
- top = Math.min(top, wrapper.element.offset().top);
- bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));
- }
- });
- return Math.max(0, bottom - top);
- }
-
- });
-
- buffer.reset(startIndex);
-
- return buffer;
-}
+export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {
+ const buffer = Object.create(Array.prototype);
+
+ angular.extend(buffer, {
+ size: bufferSize,
+
+ reset(startIndex) {
+ buffer.remove(0, buffer.length);
+ buffer.eof = false;
+ buffer.bof = false;
+ buffer.first = startIndex;
+ buffer.next = startIndex;
+ buffer.minIndex = startIndex; // Calculated when data is effectively accessed
+ buffer.maxIndex = startIndex;
+ buffer.minIndexUser = null; // as set by the user (datasource)
+ buffer.maxIndexUser = null;
+ },
+
+ // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max
+ // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated
+ // for a # of rows
+ resetStartIndex: function resetStartIndex(startIndex) {
+ buffer.remove(0, buffer.length);
+ buffer.eof = buffer.eof && startIndex==buffer.maxIndex;
+ buffer.bof = buffer.bof && startIndex==buffer.minIndex;
+ buffer.first = startIndex;
+ buffer.next = startIndex;
+ },
+
+ append(items) {
+ items.forEach((item) => {
+ ++buffer.next;
+ buffer.insert('append', item);
+ });
+ buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);
+ },
+
+ prepend(items) {
+ items.reverse().forEach((item) => {
+ --buffer.first;
+ buffer.insert('prepend', item);
+ });
+ buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);
+ },
+
+ /**
+ * inserts wrapped element in the buffer
+ * the first argument is either operation keyword (see below) or a number for operation 'insert'
+ * for insert the number is the index for the buffer element the new one have to be inserted after
+ * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'
+ */
+ insert(operation, item, isTop) {
+ const wrapper = {
+ item: item
+ };
+
+ if (operation % 1 === 0) {// it is an insert
+ wrapper.op = 'insert';
+ buffer.splice(operation, 0, wrapper);
+ if(isTop) {
+ buffer.first--;
+ }
+ else {
+ buffer.next++;
+ }
+ } else {
+ wrapper.op = operation;
+ switch (operation) {
+ case 'append':
+ buffer.push(wrapper);
+ break;
+ case 'prepend':
+ buffer.unshift(wrapper);
+ break;
+ }
+ }
+ },
+
+ // removes elements from buffer
+ remove(arg1, arg2) {
+ if (angular.isNumber(arg1)) {
+ // removes items from arg1 (including) through arg2 (excluding)
+ for (let i = arg1; i < arg2; i++) {
+ elementRoutines.removeElement(buffer[i]);
+ }
+ return buffer.splice(arg1, arg2 - arg1);
+ }
+ // removes single item(wrapper) from the buffer
+ buffer.splice(buffer.indexOf(arg1), 1);
+ if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {
+ this.incrementMinIndex();
+ }
+ else {
+ this.decrementMaxIndex();
+ }
+ if(arg1._op === 'isTop') {
+ buffer.first++;
+ }
+ else {
+ buffer.next--;
+ }
+ if(!buffer.length) {
+ buffer.first = buffer.minIndex%1 ? buffer.minIndex : startIndex;
+ buffer.next = buffer.first;
+ buffer.eof = buffer.eof && buffer.first==buffer.maxIndex;
+ }
+
+ return elementRoutines.removeElementAnimated(arg1);
+ },
+
+ incrementMinIndex() {
+ if(buffer.minIndexUser !== null) {
+ if(buffer.minIndex > buffer.minIndexUser) {
+ buffer.minIndexUser++;
+ return;
+ }
+ if(buffer.minIndex === buffer.minIndexUser) {
+ buffer.minIndexUser++;
+ }
+ }
+ buffer.minIndex++;
+ },
+
+ decrementMaxIndex() {
+ if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {
+ buffer.maxIndexUser--;
+ }
+ buffer.maxIndex--;
+ },
+
+ getAbsMinIndex() {
+ if(buffer.minIndexUser !== null) {
+ return Math.min(buffer.minIndexUser, buffer.minIndex);
+ }
+ return buffer.minIndex;
+ },
+
+ getAbsMaxIndex() {
+ if(buffer.maxIndexUser !== null) {
+ return Math.max(buffer.maxIndexUser, buffer.maxIndex);
+ }
+ return buffer.maxIndex;
+ },
+
+ effectiveHeight(elements) {
+ if (!elements.length) {
+ return 0;
+ }
+ let top = Number.MAX_VALUE;
+ let bottom = Number.NEGATIVE_INFINITY;
+ elements.forEach((wrapper) => {
+ if (wrapper.element[0].offsetParent) {
+ // element style is not display:none
+ top = Math.min(top, wrapper.element.offset().top);
+ bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));
+ }
+ });
+ return Math.max(0, bottom - top);
+ },
+
+ getItems() {
+ return buffer.filter(item => item.op === 'none');
+ },
+
+ getFirstItem() {
+ const list = buffer.getItems();
+ if (!list.length) {
+ return null;
+ }
+ return list[0].item;
+ },
+
+ getLastItem() {
+ const list = buffer.getItems();
+ if (!list.length) {
+ return null;
+ }
+ return list[list.length - 1].item;
+ }
+
+ });
+
+ buffer.reset(startIndex);
+
+ return buffer;
+}
diff --git a/src/modules/elementRoutines.js b/src/modules/elementRoutines.js
index b4c7dda5..a9c877f6 100644
--- a/src/modules/elementRoutines.js
+++ b/src/modules/elementRoutines.js
@@ -1,82 +1,82 @@
-const hideClassToken = 'ng-ui-scroll-hide';
-
-export default class ElementRoutines {
-
- static addCSSRules() {
- const selector = '.' + hideClassToken;
- const rules = 'display: none';
- const sheet = document.styleSheets[0];
- let index;
- try {
- index = sheet.cssRules.length;
- } catch (err) {
- index = 0;
- }
- if('insertRule' in sheet) {
- sheet.insertRule(selector + '{' + rules + '}', index);
- }
- else if('addRule' in sheet) {
- sheet.addRule(selector, rules, index);
- }
- }
-
- constructor($injector, $q) {
- this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;
- this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;
- this.$q = $q;
- }
-
- hideElement(wrapper) {
- wrapper.element.addClass(hideClassToken);
- }
-
- showElement(wrapper) {
- wrapper.element.removeClass(hideClassToken);
- }
-
- insertElement(newElement, previousElement) {
- previousElement.after(newElement);
- return [];
- }
-
- removeElement(wrapper) {
- wrapper.element.remove();
- wrapper.scope.$destroy();
- return [];
- }
-
- insertElementAnimated(newElement, previousElement) {
- if (!this.$animate) {
- return this.insertElement(newElement, previousElement);
- }
-
- if (this.isAngularVersionLessThen1_3) {
- const deferred = this.$q.defer();
- // no need for parent - previous element is never null
- this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());
-
- return [deferred.promise];
- }
-
- // no need for parent - previous element is never null
- return [this.$animate.enter(newElement, null, previousElement)];
- }
-
- removeElementAnimated(wrapper) {
- if (!this.$animate) {
- return this.removeElement(wrapper);
- }
-
- if (this.isAngularVersionLessThen1_3) {
- const deferred = this.$q.defer();
- this.$animate.leave(wrapper.element, () => {
- wrapper.scope.$destroy();
- return deferred.resolve();
- });
-
- return [deferred.promise];
- }
-
- return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];
- }
+const hideClassToken = 'ng-ui-scroll-hide';
+
+export default class ElementRoutines {
+
+ static addCSSRules() {
+ const selector = '.' + hideClassToken;
+ const rules = 'display: none';
+ const sheet = document.styleSheets[0];
+ let index;
+ try {
+ index = sheet.cssRules.length;
+ } catch (err) {
+ index = 0;
+ }
+ if('insertRule' in sheet) {
+ sheet.insertRule(selector + '{' + rules + '}', index);
+ }
+ else if('addRule' in sheet) {
+ sheet.addRule(selector, rules, index);
+ }
+ }
+
+ constructor($injector, $q) {
+ this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;
+ this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;
+ this.$q = $q;
+ }
+
+ hideElement(wrapper) {
+ wrapper.element.addClass(hideClassToken);
+ }
+
+ showElement(wrapper) {
+ wrapper.element.removeClass(hideClassToken);
+ }
+
+ insertElement(newElement, previousElement) {
+ previousElement.after(newElement);
+ return [];
+ }
+
+ removeElement(wrapper) {
+ wrapper.element.remove();
+ wrapper.scope.$destroy();
+ return [];
+ }
+
+ insertElementAnimated(newElement, previousElement) {
+ if (!this.$animate) {
+ return this.insertElement(newElement, previousElement);
+ }
+
+ if (this.isAngularVersionLessThen1_3) {
+ const deferred = this.$q.defer();
+ // no need for parent - previous element is never null
+ this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());
+
+ return [deferred.promise];
+ }
+
+ // no need for parent - previous element is never null
+ return [this.$animate.enter(newElement, null, previousElement)];
+ }
+
+ removeElementAnimated(wrapper) {
+ if (!this.$animate) {
+ return this.removeElement(wrapper);
+ }
+
+ if (this.isAngularVersionLessThen1_3) {
+ const deferred = this.$q.defer();
+ this.$animate.leave(wrapper.element, () => {
+ wrapper.scope.$destroy();
+ return deferred.resolve();
+ });
+
+ return [deferred.promise];
+ }
+
+ return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];
+ }
}
\ No newline at end of file
diff --git a/src/modules/jqLiteExtras.js b/src/modules/jqLiteExtras.js
index e730f2ec..bba9b7f7 100644
--- a/src/modules/jqLiteExtras.js
+++ b/src/modules/jqLiteExtras.js
@@ -1,270 +1,270 @@
-/*!
- globals: angular, window
- List of used element methods available in JQuery but not in JQuery Lite
- element.before(elem)
- element.height()
- element.outerHeight(true)
- element.height(value) = only for Top/Bottom padding elements
- element.scrollTop()
- element.scrollTop(value)
- */
-
-export default class JQLiteExtras {
-
- registerFor(element) {
- let convertToPx, css, getStyle, isWindow;
- // angular implementation blows up if elem is the window
- css = angular.element.prototype.css;
-
- element.prototype.css = function (name, value) {
- let self = this;
- let elem = self[0];
- if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {
- return css.call(self, name, value);
- }
- };
-
- // as defined in angularjs v1.0.5
- isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;
-
- function scrollTo(self, direction, value) {
- let elem = self[0];
- let [method, prop, preserve] = {
- top: [
- 'scrollTop',
- 'pageYOffset',
- 'scrollLeft'
- ],
- left: [
- 'scrollLeft',
- 'pageXOffset',
- 'scrollTop'
- ]
- }[direction];
-
- const isValueDefined = typeof value !== 'undefined';
- if (isWindow(elem)) {
- if (isValueDefined) {
- return elem.scrollTo(self[preserve].call(self), value);
- }
- return (prop in elem) ? elem[prop] : elem.document.documentElement[method];
- } else {
- if (isValueDefined) {
- elem[method] = value;
- }
- return elem[method];
- }
- }
-
- if (window.getComputedStyle) {
- getStyle = (elem) => window.getComputedStyle(elem, null);
- convertToPx = (elem, value) => parseFloat(value);
- } else {
- getStyle = (elem) => elem.currentStyle;
- convertToPx = (elem, value) => {
- let left, result, rs, rsLeft, style;
- let core_pnum = /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source;
- let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');
-
- if (!rnumnonpx.test(value)) {
- return parseFloat(value);
- }
-
- // ported from JQuery
- style = elem.style;
- left = style.left;
- rs = elem.runtimeStyle;
- rsLeft = rs && rs.left;
- if (rs) {
- rs.left = style.left;
- }
- // put in the new values to get a computed style out
- style.left = value;
- result = style.pixelLeft;
- style.left = left;
- if (rsLeft) {
- rs.left = rsLeft;
- }
- return result;
- };
- }
-
- function getMeasurements(elem, measure) {
- let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;
-
- if (isWindow(elem)) {
- base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];
-
- return {
- base: base,
- padding: 0,
- border: 0,
- margin: 0
- };
- }
-
- // Start with offset property
- [
- base,
- dirA,
- dirB
- ] = {
- width: [
- elem.offsetWidth,
- 'Left',
- 'Right'
- ],
- height: [
- elem.offsetHeight,
- 'Top',
- 'Bottom'
- ]
- }[measure];
-
- computedStyle = getStyle(elem);
- paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;
- paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;
- borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;
- borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;
- computedMarginA = computedStyle['margin' + dirA];
- computedMarginB = computedStyle['margin' + dirB];
-
- // I do not care for width for now, so this hack is irrelevant
- // if ( !supportsPercentMargin )
- // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )
- // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )
- marginA = convertToPx(elem, computedMarginA) || 0;
- marginB = convertToPx(elem, computedMarginB) || 0;
-
- return {
- base: base,
- padding: paddingA + paddingB,
- border: borderA + borderB,
- margin: marginA + marginB
- };
- }
-
- function getWidthHeight(elem, direction, measure) {
- let computedStyle, result;
-
- let measurements = getMeasurements(elem, direction);
-
- if (measurements.base > 0) {
- return {
- base: measurements.base - measurements.padding - measurements.border,
- outer: measurements.base,
- outerfull: measurements.base + measurements.margin
- }[measure];
- }
-
- // Fall back to computed then uncomputed css if necessary
- computedStyle = getStyle(elem);
- result = computedStyle[direction];
-
- if (result < 0 || result === null) {
- result = elem.style[direction] || 0;
- }
-
- // Normalize "", auto, and prepare for extra
- result = parseFloat(result) || 0;
-
- return {
- base: result - measurements.padding - measurements.border,
- outer: result,
- outerfull: result + measurements.padding + measurements.border + measurements.margin
- }[measure];
- }
-
- // define missing methods
- return angular.forEach({
- before(newElem) {
- var children, elem, i, j, parent, ref, self;
- self = this;
- elem = self[0];
- parent = self.parent();
- children = parent.contents();
- if (children[0] === elem) {
- return parent.prepend(newElem);
- } else {
- for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {
- if (children[i] === elem) {
- angular.element(children[i - 1]).after(newElem);
- return;
- }
- }
- throw new Error('invalid DOM structure ' + elem.outerHTML);
- }
- },
- height (value){
- var self;
- self = this;
- if (typeof value !== 'undefined') {
- if (angular.isNumber(value)) {
- value = value + 'px';
- }
- return css.call(self, 'height', value);
- } else {
- return getWidthHeight(this[0], 'height', 'base');
- }
- },
- outerHeight(option) {
- return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');
- },
- outerWidth(option) {
- return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');
- },
-
- /*
- The offset setter method is not implemented
- */
- offset(value) {
- let docElem, win;
- let self = this;
- let box = {
- top: 0,
- left: 0
- };
- let elem = self[0];
- let doc = elem && elem.ownerDocument;
-
- if (arguments.length) {
- if (value === undefined) {
- return self;
- }
- // TODO: implement setter
- throw new Error('offset setter method is not implemented');
- }
-
- if (!doc) {
- return;
- }
-
- docElem = doc.documentElement;
-
- // TODO: Make sure it's not a disconnected DOM node
-
- if (elem.getBoundingClientRect != null) {
- box = elem.getBoundingClientRect();
- }
-
- win = doc.defaultView || doc.parentWindow;
-
- return {
- top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),
- left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)
- };
- },
- scrollTop(value) {
- return scrollTo(this, 'top', value);
- },
- scrollLeft(value) {
- return scrollTo(this, 'left', value);
- }
- }, (value, key) => {
- if (!element.prototype[key]) {
- return element.prototype[key] = value;
- }
- });
- }
-
-}
+/*!
+ globals: angular, window
+ List of used element methods available in JQuery but not in JQuery Lite
+ element.before(elem)
+ element.height()
+ element.outerHeight(true)
+ element.height(value) = only for Top/Bottom padding elements
+ element.scrollTop()
+ element.scrollTop(value)
+ */
+
+export default class JQLiteExtras {
+
+ registerFor(element) {
+ let convertToPx, css, getStyle, isWindow;
+ // angular implementation blows up if elem is the window
+ css = angular.element.prototype.css;
+
+ element.prototype.css = function (name, value) {
+ let self = this;
+ let elem = self[0];
+ if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {
+ return css.call(self, name, value);
+ }
+ };
+
+ // as defined in angularjs v1.0.5
+ isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;
+
+ function scrollTo(self, direction, value) {
+ let elem = self[0];
+ let [method, prop, preserve] = {
+ top: [
+ 'scrollTop',
+ 'pageYOffset',
+ 'scrollLeft'
+ ],
+ left: [
+ 'scrollLeft',
+ 'pageXOffset',
+ 'scrollTop'
+ ]
+ }[direction];
+
+ const isValueDefined = typeof value !== 'undefined';
+ if (isWindow(elem)) {
+ if (isValueDefined) {
+ return elem.scrollTo(self[preserve].call(self), value);
+ }
+ return (prop in elem) ? elem[prop] : elem.document.documentElement[method];
+ } else {
+ if (isValueDefined) {
+ elem[method] = value;
+ }
+ return elem[method];
+ }
+ }
+
+ if (window.getComputedStyle) {
+ getStyle = (elem) => window.getComputedStyle(elem, null);
+ convertToPx = (elem, value) => parseFloat(value);
+ } else {
+ getStyle = (elem) => elem.currentStyle;
+ convertToPx = (elem, value) => {
+ let left, result, rs, rsLeft, style;
+ let core_pnum = /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source;
+ let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');
+
+ if (!rnumnonpx.test(value)) {
+ return parseFloat(value);
+ }
+
+ // ported from JQuery
+ style = elem.style;
+ left = style.left;
+ rs = elem.runtimeStyle;
+ rsLeft = rs && rs.left;
+ if (rs) {
+ rs.left = style.left;
+ }
+ // put in the new values to get a computed style out
+ style.left = value;
+ result = style.pixelLeft;
+ style.left = left;
+ if (rsLeft) {
+ rs.left = rsLeft;
+ }
+ return result;
+ };
+ }
+
+ function getMeasurements(elem, measure) {
+ let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;
+
+ if (isWindow(elem)) {
+ base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];
+
+ return {
+ base: base,
+ padding: 0,
+ border: 0,
+ margin: 0
+ };
+ }
+
+ // Start with offset property
+ [
+ base,
+ dirA,
+ dirB
+ ] = {
+ width: [
+ elem.offsetWidth,
+ 'Left',
+ 'Right'
+ ],
+ height: [
+ elem.offsetHeight,
+ 'Top',
+ 'Bottom'
+ ]
+ }[measure];
+
+ computedStyle = getStyle(elem);
+ paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;
+ paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;
+ borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;
+ borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;
+ computedMarginA = computedStyle['margin' + dirA];
+ computedMarginB = computedStyle['margin' + dirB];
+
+ // I do not care for width for now, so this hack is irrelevant
+ // if ( !supportsPercentMargin )
+ // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )
+ // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )
+ marginA = convertToPx(elem, computedMarginA) || 0;
+ marginB = convertToPx(elem, computedMarginB) || 0;
+
+ return {
+ base: base,
+ padding: paddingA + paddingB,
+ border: borderA + borderB,
+ margin: marginA + marginB
+ };
+ }
+
+ function getWidthHeight(elem, direction, measure) {
+ let computedStyle, result;
+
+ let measurements = getMeasurements(elem, direction);
+
+ if (measurements.base > 0) {
+ return {
+ base: measurements.base - measurements.padding - measurements.border,
+ outer: measurements.base,
+ outerfull: measurements.base + measurements.margin
+ }[measure];
+ }
+
+ // Fall back to computed then uncomputed css if necessary
+ computedStyle = getStyle(elem);
+ result = computedStyle[direction];
+
+ if (result < 0 || result === null) {
+ result = elem.style[direction] || 0;
+ }
+
+ // Normalize "", auto, and prepare for extra
+ result = parseFloat(result) || 0;
+
+ return {
+ base: result - measurements.padding - measurements.border,
+ outer: result,
+ outerfull: result + measurements.padding + measurements.border + measurements.margin
+ }[measure];
+ }
+
+ // define missing methods
+ return angular.forEach({
+ before(newElem) {
+ var children, elem, i, j, parent, ref, self;
+ self = this;
+ elem = self[0];
+ parent = self.parent();
+ children = parent.contents();
+ if (children[0] === elem) {
+ return parent.prepend(newElem);
+ } else {
+ for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {
+ if (children[i] === elem) {
+ angular.element(children[i - 1]).after(newElem);
+ return;
+ }
+ }
+ throw new Error('invalid DOM structure ' + elem.outerHTML);
+ }
+ },
+ height (value){
+ var self;
+ self = this;
+ if (typeof value !== 'undefined') {
+ if (angular.isNumber(value)) {
+ value = value + 'px';
+ }
+ return css.call(self, 'height', value);
+ } else {
+ return getWidthHeight(this[0], 'height', 'base');
+ }
+ },
+ outerHeight(option) {
+ return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');
+ },
+ outerWidth(option) {
+ return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');
+ },
+
+ /*
+ The offset setter method is not implemented
+ */
+ offset(value) {
+ let docElem, win;
+ let self = this;
+ let box = {
+ top: 0,
+ left: 0
+ };
+ let elem = self[0];
+ let doc = elem && elem.ownerDocument;
+
+ if (arguments.length) {
+ if (value === undefined) {
+ return self;
+ }
+ // TODO: implement setter
+ throw new Error('offset setter method is not implemented');
+ }
+
+ if (!doc) {
+ return;
+ }
+
+ docElem = doc.documentElement;
+
+ // TODO: Make sure it's not a disconnected DOM node
+
+ if (elem.getBoundingClientRect != null) {
+ box = elem.getBoundingClientRect();
+ }
+
+ win = doc.defaultView || doc.parentWindow;
+
+ return {
+ top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),
+ left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)
+ };
+ },
+ scrollTop(value) {
+ return scrollTo(this, 'top', value);
+ },
+ scrollLeft(value) {
+ return scrollTo(this, 'left', value);
+ }
+ }, (value, key) => {
+ if (!element.prototype[key]) {
+ return element.prototype[key] = value;
+ }
+ });
+ }
+
+}
diff --git a/src/modules/padding.js b/src/modules/padding.js
index ce66e22d..6b9766dd 100644
--- a/src/modules/padding.js
+++ b/src/modules/padding.js
@@ -1,84 +1,92 @@
-// Can't just extend the Array, due to Babel does not support built-in classes extending
-// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile
-class CacheProto {
- add(item) {
- for (let i = this.length - 1; i >= 0; i--) {
- if (this[i].index === item.scope.$index) {
- this[i].height = item.element.outerHeight();
- return;
- }
- }
- this.push({
- index: item.scope.$index,
- height: item.element.outerHeight()
- });
- this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));
- }
-
- remove(argument, _isTop) {
- const index = argument % 1 === 0 ? argument : argument.scope.$index;
- const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';
- for (let i = this.length - 1; i >= 0; i--) {
- if (this[i].index === index) {
- this.splice(i, 1);
- break;
- }
- }
- if(!isTop) {
- for (let i = this.length - 1; i >= 0; i--) {
- if (this[i].index > index) {
- this[i].index--;
- }
- }
- }
- }
-
- clear() {
- this.length = 0;
- }
-}
-
-function Cache() {
- const instance = [];
- instance.push.apply(instance, arguments);
- Object.setPrototypeOf(instance, Cache.prototype);
- return instance;
-}
-Cache.prototype = Object.create(Array.prototype);
-Object.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>
- Cache.prototype[methodName] = CacheProto.prototype[methodName]
-);
-
-function generateElement(template) {
- if(template.nodeType !== Node.ELEMENT_NODE) {
- throw new Error('ui-scroll directive requires an Element node for templating the view');
- }
- let element;
- switch (template.tagName.toLowerCase()) {
- case 'dl':
- throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);
- case 'tr':
- let table = angular.element('');
- element = table.find('tr');
- break;
- case 'li':
- element = angular.element('
');
- }
- return element;
-}
-
-class Padding {
- constructor(template) {
- this.element = generateElement(template);
- this.cache = new Cache();
- }
-
- height() {
- return this.element.height.apply(this.element, arguments);
- }
-}
-
+// Can't just extend the Array, due to Babel does not support built-in classes extending
+// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile
+class CacheProto {
+ add(item) {
+ for (let i = this.length - 1; i >= 0; i--) {
+ if (this[i].index === item.scope.$index) {
+ this[i].height = item.element.outerHeight();
+ return;
+ }
+ }
+ this.push({
+ index: item.scope.$index,
+ height: item.element.outerHeight()
+ });
+ this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));
+ }
+
+ remove(argument, _isTop) {
+ const index = argument % 1 === 0 ? argument : argument.scope.$index;
+ const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';
+ for (let i = this.length - 1; i >= 0; i--) {
+ if (this[i].index === index) {
+ this.splice(i, 1);
+ break;
+ }
+ }
+ if(!isTop) {
+ for (let i = this.length - 1; i >= 0; i--) {
+ if (this[i].index > index) {
+ this[i].index--;
+ }
+ }
+ }
+ }
+
+ clear() {
+ this.length = 0;
+ }
+}
+
+function Cache() {
+ const instance = [];
+ instance.push.apply(instance, arguments);
+ Object.setPrototypeOf(instance, Cache.prototype);
+ return instance;
+}
+Cache.prototype = Object.create(Array.prototype);
+Object.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>
+ Cache.prototype[methodName] = CacheProto.prototype[methodName]
+);
+
+function generateElement(template) {
+ if(template.nodeType !== Node.ELEMENT_NODE) {
+ throw new Error('ui-scroll directive requires an Element node for templating the view');
+ }
+ let element;
+ switch (template.tagName.toLowerCase()) {
+ case 'dl':
+ throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);
+ case 'tr':
+ let table = angular.element('');
+ element = table.find('tr');
+ break;
+ case 'li':
+ element = angular.element('
');
+ }
+ return element;
+}
+
+//
+// Padding represents the dummy element added to both the top and the bottom of the scrolling container
+// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the
+// cache is not used and thus is not created.
+//
+class Padding {
+ constructor(template,useCache) {
+ this.element = generateElement(template);
+ if(useCache) {
+ this.cache = new Cache();
+ }
+ }
+
+ height() {
+ // When called with a parameter, this sets the height of the padding
+ return this.element.height.apply(this.element, arguments);
+ }
+}
+
export default Padding;
\ No newline at end of file
diff --git a/src/modules/viewport.js b/src/modules/viewport.js
index 4f64acb9..c6744e41 100644
--- a/src/modules/viewport.js
+++ b/src/modules/viewport.js
@@ -1,216 +1,290 @@
-import Padding from './padding';
-
-export default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {
- let topPadding = null;
- let bottomPadding = null;
- const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);
- const container = viewportController && viewportController.container ? viewportController.container : undefined;
- const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;
-
- viewport.css({
- 'overflow-anchor': 'none',
- 'overflow-y': 'auto',
- 'display': 'block'
- });
-
- function bufferPadding() {
- return viewport.outerHeight() * padding; // some extra space to initiate preload
- }
-
- angular.extend(viewport, {
- getScope() {
- return scope;
- },
-
- createPaddingElements(template) {
- topPadding = new Padding(template);
- bottomPadding = new Padding(template);
- element.before(topPadding.element);
- element.after(bottomPadding.element);
- topPadding.height(0);
- bottomPadding.height(0);
- },
-
- applyContainerStyle() {
- if (!container) {
- return true;
- }
- if(container !== viewport) {
- viewport.css('height', window.getComputedStyle(container[0]).height);
- }
- return viewport.height() > 0;
- },
-
- bottomDataPos() {
- let scrollHeight = viewport[0].scrollHeight;
- scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;
- return scrollHeight - bottomPadding.height();
- },
-
- topDataPos() {
- return topPadding.height();
- },
-
- bottomVisiblePos() {
- return viewport.scrollTop() + viewport.outerHeight();
- },
-
- topVisiblePos() {
- return viewport.scrollTop();
- },
-
- insertElement(e, sibling) {
- return elementRoutines.insertElement(e, sibling || topPadding.element);
- },
-
- insertElementAnimated(e, sibling) {
- return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);
- },
-
- shouldLoadBottom() {
- return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();
- },
-
- clipBottom() {
- // clip the invisible items off the bottom
- let overage = 0;
- let overageHeight = 0;
- let itemHeight = 0;
- let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();
-
- for (let i = buffer.length - 1; i >= 0; i--) {
- itemHeight = buffer[i].element.outerHeight(true);
- if (overageHeight + itemHeight > emptySpaceHeight) {
- break;
- }
- bottomPadding.cache.add(buffer[i]);
- overageHeight += itemHeight;
- overage++;
- }
-
- if (overage > 0) {
- buffer.eof = false;
- buffer.remove(buffer.length - overage, buffer.length);
- buffer.next -= overage;
- viewport.adjustPaddings();
- }
- },
-
- shouldLoadTop() {
- return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());
- },
-
- clipTop() {
- // clip the invisible items off the top
- let overage = 0;
- let overageHeight = 0;
- let itemHeight = 0;
- let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();
-
- for (let i = 0; i < buffer.length; i++) {
- itemHeight = buffer[i].element.outerHeight(true);
- if (overageHeight + itemHeight > emptySpaceHeight) {
- break;
- }
- topPadding.cache.add(buffer[i]);
- overageHeight += itemHeight;
- overage++;
- }
-
- if (overage > 0) {
- // we need to adjust top padding element before items are removed from top
- // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom
- topPadding.height(topPadding.height() + overageHeight);
- buffer.bof = false;
- buffer.remove(0, overage);
- buffer.first += overage;
- }
- },
-
- adjustPaddings() {
- if (!buffer.length) {
- return;
- }
-
- // precise heights calculation based on items that are in buffer or that were in buffer once
- const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);
-
- let topPaddingHeight = 0, topCount = 0;
- topPadding.cache.forEach(item => {
- if(item.index < buffer.first) {
- topPaddingHeight += item.height;
- topCount++;
- }
- });
-
- let bottomPaddingHeight = 0, bottomCount = 0;
- bottomPadding.cache.forEach(item => {
- if(item.index >= buffer.next) {
- bottomPaddingHeight += item.height;
- bottomCount++;
- }
- });
-
- const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;
- const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);
-
- // average heights calculation, items that have never been reached
- let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;
- let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;
- let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;
- let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;
-
- // paddings combine adjustment
- topPadding.height(topPaddingHeight + topPaddingHeightAdd);
- bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);
- },
-
- onAfterMinIndexSet(topPaddingHeightOld) {
- // additional scrollTop adjustment in case of datasource.minIndex external set
- if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {
- let diff = topPadding.height() - topPaddingHeightOld;
- viewport.scrollTop(viewport.scrollTop() + diff);
- while((diff -= viewport.scrollTop()) > 0) {
- bottomPadding.height(bottomPadding.height() + diff);
- viewport.scrollTop(viewport.scrollTop() + diff);
- }
- }
- },
-
- onAfterPrepend(updates) {
- if (!updates.prepended.length)
- return;
- const height = buffer.effectiveHeight(updates.prepended);
- const paddingHeight = topPadding.height() - height;
- if (paddingHeight >= 0) {
- topPadding.height(paddingHeight);
- }
- else {
- topPadding.height(0);
- viewport.scrollTop(viewport.scrollTop() - paddingHeight);
- }
- },
-
- resetTopPadding() {
- topPadding.height(0);
- topPadding.cache.clear();
- },
-
- resetBottomPadding() {
- bottomPadding.height(0);
- bottomPadding.cache.clear();
- },
-
- removeCacheItem(item, isTop) {
- topPadding.cache.remove(item, isTop);
- bottomPadding.cache.remove(item, isTop);
- },
-
- removeItem(item) {
- this.removeCacheItem(item);
- return buffer.remove(item);
- }
- });
-
- return viewport;
-}
+import Padding from './padding';
+
+export default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {
+ let topPadding = null;
+ let bottomPadding = null;
+ const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);
+ const container = viewportController && viewportController.container ? viewportController.container : undefined;
+ const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;
+
+ viewport.css({
+ 'overflow-anchor': 'none',
+ 'overflow-y': 'auto',
+ 'display': 'block'
+ });
+
+ function bufferPadding() {
+ return viewport.outerHeight() * padding; // some extra space to initiate preload
+ }
+
+ //
+ // Viewport measurements
+ //
+ // +----------------+ 0
+ // | top |
+ // | padding |
+ // +----------------+ topDataPos() [=topPadding.height]
+ // | not visible |
+ // | items |
+ // +----------------+ topVisiblePos() [=viewport.scrollTop]
+ // | |
+ // | visible |
+ // | items |
+ // | |
+ // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]
+ // | not visible |
+ // | items |
+ // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]
+ // | bottom |
+ // | padding |
+ // +----------------+ scrollHeight
+ //
+ // bufferPadding is some extra space we have top & bottom to allow infinite scrolling
+ // bufferPadding = viewport.outerHeight() * padding
+ //
+ // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()
+
+
+ angular.extend(viewport, {
+ getScope() {
+ return scope;
+ },
+
+ createPaddingElements(template) {
+ topPadding = new Padding(template,!rowHeight);
+ bottomPadding = new Padding(template,!rowHeight);
+ element.before(topPadding.element);
+ element.after(bottomPadding.element);
+ topPadding.height(0);
+ bottomPadding.height(0);
+ },
+
+ applyContainerStyle() {
+ if (!container) {
+ return true;
+ }
+ if(container !== viewport) {
+ viewport.css('height', window.getComputedStyle(container[0]).height);
+ }
+ return viewport.height() > 0;
+ },
+
+ bottomDataPos() {
+ let scrollHeight = viewport[0].scrollHeight;
+ scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;
+ return scrollHeight - bottomPadding.height();
+ },
+
+ topDataPos() {
+ return topPadding.height();
+ },
+
+ bottomVisiblePos() {
+ return viewport.scrollTop() + viewport.outerHeight();
+ },
+
+ topVisiblePos() {
+ return viewport.scrollTop();
+ },
+
+ insertElement(e, sibling) {
+ return elementRoutines.insertElement(e, sibling || topPadding.element);
+ },
+
+ insertElementAnimated(e, sibling) {
+ return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);
+ },
+
+ shouldLoadBottom() {
+ return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();
+ },
+
+ clipBottom() {
+ // clip the invisible items off the bottom
+ let overage = 0;
+ let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();
+ if(rowHeight) {
+ overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));
+ } else {
+ let itemHeight = 0;
+ let overageHeight = 0;
+
+ for (let i = buffer.length - 1; i >= 0; i--) {
+ itemHeight = buffer[i].element.outerHeight(true);
+ if (overageHeight + itemHeight > emptySpaceHeight) {
+ break;
+ }
+ bottomPadding.cache.add(buffer[i]);
+ overageHeight += itemHeight;
+ overage++;
+ }
+ }
+
+ if (overage > 0) {
+ buffer.eof = false;
+ buffer.remove(buffer.length - overage, buffer.length);
+ buffer.next -= overage;
+ viewport.adjustPaddings();
+ }
+ },
+
+ shouldLoadTop() {
+ return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());
+ },
+
+ clipTop() {
+ // clip the invisible items off the top
+ let overage = 0;
+ let overageHeight = 0;
+ let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();
+ if(rowHeight) {
+ overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));
+ overageHeight = overage * rowHeight;
+ } else {
+ let itemHeight = 0;
+
+ for (let i = 0; i < buffer.length; i++) {
+ itemHeight = buffer[i].element.outerHeight(true);
+ if (overageHeight + itemHeight > emptySpaceHeight) {
+ break;
+ }
+ topPadding.cache.add(buffer[i]);
+ overageHeight += itemHeight;
+ overage++;
+ }
+ }
+
+ if (overage > 0) {
+ // we need to adjust top padding element before items are removed from top
+ // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom
+ topPadding.height(topPadding.height() + overageHeight);
+ buffer.bof = false;
+ buffer.remove(0, overage);
+ buffer.first += overage;
+ }
+ },
+
+ // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position
+ // and update the padding accordingly
+ // It is designed to work with non fixed rowHeight, although it will need more tests in this area...
+ scrollTo(first) {
+ if(rowHeight) {
+ const min = buffer.getAbsMinIndex();
+ const max = buffer.getAbsMaxIndex();
+ first = Math.min(Math.max(first, min),max);
+ // Adjust the paddings before removing the elements to avoid touching the scroll top position
+ topPadding.height((first-min)*rowHeight);
+ bottomPadding.height(((max+1)-first)*rowHeight);
+ buffer.resetStartIndex(first);
+ } else {
+ buffer.resetStartIndex(first);
+ viewport.adjustPaddings();
+ }
+ },
+
+ adjustPaddings() {
+ if(rowHeight) {
+ const min = buffer.getAbsMinIndex();
+ const max = buffer.getAbsMaxIndex();
+ topPadding.height((buffer.first-min)*rowHeight);
+ // PHIL: next points to the next possible item, while max is the index of the last one.
+ // In order to make them compatible, we should add one to max
+ // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended
+ // Not sure if this can have a consequence or not....
+ bottomPadding.height(((max+1)-buffer.next)*rowHeight);
+ return;
+ }
+
+ if (!buffer.length) {
+ return;
+ }
+
+ // precise heights calculation based on items that are in buffer or that were in buffer once
+ const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);
+ let topPaddingHeight = 0, topCount = 0;
+ topPadding.cache.forEach(item => {
+ if(item.index < buffer.first) {
+ topPaddingHeight += item.height;
+ topCount++;
+ }
+ });
+
+ let bottomPaddingHeight = 0, bottomCount = 0;
+ bottomPadding.cache.forEach(item => {
+ if(item.index >= buffer.next) {
+ bottomPaddingHeight += item.height;
+ bottomCount++;
+ }
+ });
+
+ const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;
+ const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);
+
+ // average heights calculation, items that have never been reached
+ let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;
+ let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;
+ let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;
+ let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;
+
+ // paddings combine adjustment
+ topPadding.height(topPaddingHeight + topPaddingHeightAdd);
+ bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);
+ },
+
+ onAfterMinIndexSet(topPaddingHeightOld) {
+ // additional scrollTop adjustment in case of datasource.minIndex external set
+ if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {
+ let diff = topPadding.height() - topPaddingHeightOld;
+ viewport.scrollTop(viewport.scrollTop() + diff);
+ while((diff -= viewport.scrollTop()) > 0) {
+ bottomPadding.height(bottomPadding.height() + diff);
+ viewport.scrollTop(viewport.scrollTop() + diff);
+ }
+ }
+ },
+
+ onAfterPrepend(updates) {
+ if (!updates.prepended.length)
+ return;
+ const height = buffer.effectiveHeight(updates.prepended);
+ const paddingHeight = topPadding.height() - height;
+ if (paddingHeight >= 0) {
+ topPadding.height(paddingHeight);
+ }
+ else {
+ topPadding.height(0);
+ viewport.scrollTop(viewport.scrollTop() - paddingHeight);
+ }
+ },
+
+ resetTopPadding() {
+ topPadding.height(0);
+ if(topPadding.cache) {
+ topPadding.cache.clear();
+ }
+ },
+
+ resetBottomPadding() {
+ bottomPadding.height(0);
+ if(bottomPadding.cache) {
+ bottomPadding.cache.clear();
+ }
+ },
+
+ removeCacheItem(item, isTop) {
+ if(topPadding.cache) {
+ topPadding.cache.remove(item, isTop);
+ }
+ if(bottomPadding.cache) {
+ bottomPadding.cache.remove(item, isTop);
+ }
+ },
+
+ removeItem(item) {
+ this.removeCacheItem(item);
+ return buffer.remove(item);
+ }
+ });
+
+ return viewport;
+}
diff --git a/src/ui-scroll-jqlite.js b/src/ui-scroll-jqlite.js
index c542a1a4..7fae71e5 100644
--- a/src/ui-scroll-jqlite.js
+++ b/src/ui-scroll-jqlite.js
@@ -1,12 +1,12 @@
-/*!
- * angular-ui-scroll
- * https://github.com/angular-ui/ui-scroll.git
- * This module is deprecated since 1.6.0 and will be removed in future versions!
- * License: MIT
- */
-(function () {
- 'use strict';
-
- angular.module('ui.scroll.jqlite', []);
-
+/*!
+ * angular-ui-scroll
+ * https://github.com/angular-ui/ui-scroll.git
+ * This module is deprecated since 1.6.0 and will be removed in future versions!
+ * License: MIT
+ */
+(function () {
+ 'use strict';
+
+ angular.module('ui.scroll.jqlite', []);
+
})();
\ No newline at end of file
diff --git a/src/ui-scroll.js b/src/ui-scroll.js
index edb83dea..73284808 100644
--- a/src/ui-scroll.js
+++ b/src/ui-scroll.js
@@ -8,7 +8,8 @@ angular.module('ui.scroll', [])
.constant('JQLiteExtras', JQLiteExtras)
.run(['JQLiteExtras', (JQLiteExtras) => {
- !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;
+ const elt = angular.element;
+ !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;
ElementRoutines.addCSSRules();
}])
@@ -72,33 +73,47 @@ angular.module('ui.scroll', [])
return parseNumber(result, defaultValue, isFloat);
}
- const BUFFER_MIN = 3;
- const BUFFER_DEFAULT = 10;
- const PADDING_MIN = 0.3;
- const PADDING_DEFAULT = 0.5;
- const START_INDEX_DEFAULT = 1;
- const MAX_VIEWPORT_DELAY = 500;
- const VIEWPORT_POLLING_INTERVAL = 50;
+ const BUFFER_MIN = 3; // Minimum size of the data source request
+ const BUFFER_DEFAULT = 10; // Default datasource request size
+ const PADDING_MIN = 0.3; // Mininum # of rows in the padding area
+ const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area
+ const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block
+ const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0
+ const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height
let datasource = null;
- const itemName = match[1];
- const datasourceName = match[2];
- const viewportController = controllers[0];
- const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));
+ const itemName = match[1]; // Name of the index variable to publish
+ const datasourceName = match[2]; // Name of the datasource to request the rows from
+ const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)
+ const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));
const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));
let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);
+
+ // PHIL: Provide a fixed row height
+ //
+ const rowHeight = parseNumericAttr($attr.rowHeight, null, false);
+
+ // PHIL: Read the visibility watch option, true by default
+ const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';
+
+ // Revision IDs
+ //
let ridActual = 0; // current data revision id
let pending = [];
const elementRoutines = new ElementRoutines($injector, $q);
- const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);
- const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);
+ const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);
+ const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);
const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);
if (viewportController) {
viewportController.adapter = adapter;
}
+ // Currently, we only debounce the scroll events when a fixed rowHeight is provided
+ // as the unit tests will have to be adapted to support this feature
+ let scPreviousScrollTop=-1;
+
const isDatasourceValid = () =>
Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';
@@ -232,6 +247,11 @@ angular.module('ui.scroll', [])
function bindEvents() {
viewport.bind('resize', resizeAndScrollHandler);
viewport.bind('scroll', resizeAndScrollHandler);
+ // If a scroll event happened while the handler was not bounded, emit the scroll
+ if(isPendingScroll()) {
+ // Do it immediately
+ _resizeAndScrollHandler();
+ }
}
function unbindEvents() {
@@ -240,19 +260,27 @@ angular.module('ui.scroll', [])
}
function reload() {
+ unbindEvents();
viewport.resetTopPadding();
viewport.resetBottomPadding();
if (arguments.length) {
startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);
}
buffer.reset(startIndex);
+ scPreviousScrollTop = -1; // Avoid isScrollPending() to be true
persistDatasourceIndex(datasource, 'minIndex');
persistDatasourceIndex(datasource, 'maxIndex');
doAdjust();
}
+ function scrollTo(first) {
+ unbindEvents();
+ viewport.scrollTo(first);
+ doAdjust();
+ }
+
function isElementVisible(wrapper) {
- return wrapper.element.height() && wrapper.element[0].offsetParent;
+ return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;
}
function visibilityWatcher(wrapper) {
@@ -271,10 +299,12 @@ angular.module('ui.scroll', [])
function insertWrapperContent(wrapper, insertAfter) {
createElement(wrapper, insertAfter, viewport.insertElement);
- if (!isElementVisible(wrapper)) {
+ if (allowVisibilityWatch && !isElementVisible(wrapper)) {
wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));
}
- elementRoutines.hideElement(wrapper); // hide inserted elements before data binding
+ if (allowVisibilityWatch) {
+ elementRoutines.hideElement(wrapper); // hide inserted elements before data binding
+ }
}
function createElement(wrapper, insertAfter, insertElement) {
@@ -346,6 +376,8 @@ angular.module('ui.scroll', [])
}
+ // Adjust the viewport paddings
+ //
function updatePaddings(rid, updates) {
// schedule another doAdjust after animation completion
if (updates.animated.length) {
@@ -359,6 +391,17 @@ angular.module('ui.scroll', [])
}
function enqueueFetch(rid, updates) {
+ // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll
+ // So we don't need to load top or bottom
+ // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without
+ // giving a chance to the scroll event to be emitted and processed.
+ // We also do that if it leads to an absolute scroll
+ if(isPendingScroll() && calculateAbsoluteScroll()!==undefined) {
+ // Looks like the event is swallowed on some browsers (FF) on some scroll configuration
+ resizeAndScrollHandler();
+ return;
+ }
+
if (viewport.shouldLoadBottom()) {
if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {
// this means that at least one item appended in the last batch has height > 0
@@ -384,10 +427,17 @@ angular.module('ui.scroll', [])
const updates = updateDOM();
// We need the item bindings to be processed before we can do adjustments
- !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();
+ // If there are no changes and the row-height is static, then ignore it!
+ const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;
+ if(changes || !rowHeight) {
+ !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();
+ }
+
+ if (allowVisibilityWatch) {
+ updates.inserted.forEach(w => elementRoutines.showElement(w));
+ updates.prepended.forEach(w => elementRoutines.showElement(w));
+ }
- updates.inserted.forEach(w => elementRoutines.showElement(w));
- updates.prepended.forEach(w => elementRoutines.showElement(w));
return updates;
}
@@ -483,8 +533,41 @@ angular.module('ui.scroll', [])
}
}
+ function isPendingScroll() {
+ if(rowHeight) {
+ // Maybe the scroll changed but the event has *not* yet being dispatched
+ // because of the $digest running and taking to long
+ var sc = viewport.scrollTop();
+ if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ // Deboucing the scroll events avois intermediate $digest when scrolling fast
+ let scTimer;
function resizeAndScrollHandler() {
+ if (rowHeight) {
+ if (scTimer) clearTimeout(scTimer);
+ scTimer = setTimeout(_resizeAndScrollHandler, 50);
+ } else {
+ _resizeAndScrollHandler();
+ }
+ }
+
+ function _resizeAndScrollHandler() {
if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {
+ // Absolute positioning currently only works when a fixed rowHeight is provided
+ // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate
+ // and provide a reasonable behavior with variable height as well
+ if(rowHeight) {
+ const newFirst = calculateAbsoluteScroll();
+ if(newFirst!==undefined) {
+ scrollTo(newFirst);
+ return;
+ }
+ }
enqueueFetch(ridActual);
@@ -492,11 +575,29 @@ angular.module('ui.scroll', [])
unbindEvents();
} else {
adapter.calculateProperties();
- !$scope.$$phase && $scope.$digest();
+ if(!rowHeight) {
+ // The digest is forced to calculate the height, which is not necessary when the height is knowm
+ !$scope.$$phase && $scope.$digest();
+ }
}
}
}
+ function calculateAbsoluteScroll() {
+ if(rowHeight) {
+ scPreviousScrollTop = viewport.scrollTop();
+ let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.getAbsMinIndex();
+ newFirst = Math.max(buffer.getAbsMinIndex(), Math.min(buffer.getAbsMaxIndex(),newFirst)); // Bound the scroll
+ if (newFirstbuffer.next+bufferSize) {
+ return newFirst;
+ }
+ }
+ return undefined;
+ }
+
function wheelHandler(event) {
if (!adapter.disabled) {
const scrollTop = viewport[0].scrollTop;
diff --git a/test/PaddingsSpec.js b/test/PaddingsSpec.js
index df80b4b1..362d881b 100644
--- a/test/PaddingsSpec.js
+++ b/test/PaddingsSpec.js
@@ -1,404 +1,404 @@
-describe('uiScroll Paddings spec.', () => {
- 'use strict';
-
- let datasource;
- beforeEach(module('ui.scroll'));
- beforeEach(module('ui.scroll.test.datasources'));
- beforeEach(
- inject(function(myResponsiveDatasource) {
- datasource = myResponsiveDatasource;
- })
- );
-
- const itemsCount = 30;
- const itemHeight = 100;
- const viewportHeight = 500;
- const MAX = 3; // maximum scrolling interations to reach out the EOF/BOF
-
- const scrollSettings = {
- datasource: 'myResponsiveDatasource',
- adapter: 'adapter',
- itemHeight: itemHeight,
- viewportHeight: viewportHeight
- };
-
- function appendTitle(outside, indices) {
- return (outside ? ' outside' : ' inside') + ' the buffer' + (indices ? ' when min/max indices are set': '');
- }
-
- function setUserIndices() {
- datasource.minIndex = datasource.min;
- datasource.maxIndex = datasource.max;
- }
-
- function scrollBottom(viewport, count = 1) {
- for (var i = 0; i < count; i++) {
- viewport.scrollTop(99999);
- viewport.trigger('scroll');
- }
- }
-
- function scrollTop(viewport, count = 1) {
- for (var i = 0; i < count; i++) {
- viewport.scrollTop(0);
- viewport.trigger('scroll');
- }
- }
-
- function removeItem(datasource, index) {
- if(index >= datasource.min && index <= datasource.max) {
- const indexRemoved = datasource.data.indexOf(datasource.data[index - datasource.min]);
- if(indexRemoved > -1) {
- datasource.data.splice(indexRemoved, 1);
- if(index === datasource.min) {
- datasource.min++;
- }
- else {
- datasource.max--;
- }
- }
- }
- }
-
- function insertItems(datasource, index, items = []) {
- if(index >= datasource.min && index <= datasource.max && items.length) {
- const indexToInsert = datasource.data.indexOf(datasource.data[index - datasource.min]);
- if(indexToInsert > -1) {
- datasource.data.splice(indexToInsert, 0, items);
- datasource.max += items.length;
- }
- }
- }
-
- function checkRow(viewport, row, content, tail = false) {
- var children = viewport.children();
- if(tail) {
- row = children.length - 1 - row;
- }
- const rowElement = children[row];
- expect(rowElement.innerHTML).toBe(content);
- }
-
- function checkRowBack(viewport, row, content) {
- checkRow(viewport, row, content, true);
- }
-
- it('\nshould set up properly', () => {
- runTest(scrollSettings,
- () => {
- expect(datasource.min).toBe(1);
- expect(datasource.max).toBe(itemsCount);
- }
- );
- });
-
- describe('Removing items via indexed-based applyUpdates\n', () => {
-
- [true, false].forEach(outside =>
- [true, false].forEach(userIndices =>
- it('should remove last row' + appendTitle(outside, userIndices), () =>
- runTest(scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- scrollBottom(viewport, MAX);
- outside && scrollTop(viewport);
- const initialBottomHeight = Helper.getBottomPadding(viewport);
-
- removeItem(datasource, datasource.max);
- scope.adapter.applyUpdates(itemsCount, []);
- outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight);
-
- !outside && scrollTop(viewport);
- scrollBottom(viewport, MAX);
- expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight);
- checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + (itemsCount - 1));
- }
- )
- )
- )
- );
-
- [true, false].forEach(outside =>
- [true, false].forEach(userIndices =>
- it('should remove last row and then the next after last' + appendTitle(outside, userIndices), () =>
- runTest(scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- scrollBottom(viewport, MAX);
- outside && scrollTop(viewport);
-
- const initialBottomHeight = Helper.getBottomPadding(viewport);
- removeItem(datasource, datasource.max);
- scope.adapter.applyUpdates(itemsCount, []);
- removeItem(datasource, datasource.max);
- scope.adapter.applyUpdates(itemsCount - 1, []);
- outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight * 2);
-
- !outside && scrollTop(viewport);
- scrollBottom(viewport, MAX);
- expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight * 2);
- checkRowBack(viewport, 1, (itemsCount - 2) + ': item' + (itemsCount - 2));
- }
- )
- )
- )
- );
-
- [true, false].forEach(outside =>
- [true, false].forEach(userIndices =>
- it('should remove pre-last row' + appendTitle(outside, userIndices), () =>
- runTest(scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- scrollBottom(viewport, MAX);
- outside && scrollTop(viewport);
-
- const initialBottomHeight = Helper.getBottomPadding(viewport);
- removeItem(datasource, datasource.max - 1);
- scope.adapter.applyUpdates(itemsCount - 1, []);
- outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight);
-
- !outside && scrollTop(viewport);
- scrollBottom(viewport, MAX);
- expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight);
- checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount);
- checkRowBack(viewport, 2, (itemsCount - 2) + ': item' + (itemsCount - 2));
- }
- )
- )
- )
- );
-
- [true, false].forEach(outside =>
- [true, false].forEach(userIndices =>
- it('should remove first row' + appendTitle(outside, userIndices), () =>
- runTest(scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- outside && scrollBottom(viewport, MAX);
-
- const initialTopHeight = Helper.getTopPadding(viewport);
- removeItem(datasource, datasource.min);
- scope.adapter.applyUpdates(1, []);
- outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight);
-
- !outside && scrollBottom(viewport, MAX);
- expect(Helper.getBottomPadding(viewport)).toBe(0);
-
- scrollTop(viewport);
- expect(Helper.getTopPadding(viewport)).toBe(0);
- checkRow(viewport, 1, '2: item2');
- }
- )
- )
- )
- );
-
- [true, false].forEach(outside =>
- [true, false].forEach(userIndices =>
- it('should remove first row and then the next after first' + appendTitle(outside, userIndices), () =>
- runTest(scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- outside && scrollBottom(viewport, MAX);
-
- const initialTopHeight = Helper.getTopPadding(viewport);
- removeItem(datasource, datasource.min);
- scope.adapter.applyUpdates(1, []);
- removeItem(datasource, datasource.min);
- scope.adapter.applyUpdates(2, []);
- outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight * 2);
-
- !outside && scrollBottom(viewport, MAX);
- expect(Helper.getBottomPadding(viewport)).toBe(0);
-
- scrollTop(viewport);
- expect(Helper.getTopPadding(viewport)).toBe(0);
- checkRow(viewport, 1, '3: item3');
- }
- )
- )
- )
- );
-
- [true, false].forEach(outside =>
- [true, false].forEach(userIndices =>
- it('should remove second row' + appendTitle(outside, userIndices), () =>
- runTest(scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- outside && scrollBottom(viewport, MAX);
-
- const initialTopHeight = Helper.getTopPadding(viewport);
- removeItem(datasource, datasource.min + 1);
- scope.adapter.applyUpdates(2, []);
- outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight * 1);
-
- !outside && scrollBottom(viewport, MAX);
- expect(Helper.getBottomPadding(viewport)).toBe(0);
-
- scrollTop(viewport);
- expect(Helper.getTopPadding(viewport)).toBe(0);
- checkRow(viewport, 1, '1: item1');
- checkRow(viewport, 2, '2: item3');
- }
- )
- )
- )
- );
- });
-
- describe('Appending inside the buffer\n', () => {
-
- it('should append 3 rows via index-based applyUpdates', () => {
- runTest(Object.assign({}, scrollSettings, { startIndex: 28 }),
- (viewport, scope) => {
- const newItems = [
- 'item' + (datasource.max + 1),
- 'item' + (datasource.max + 2),
- 'item' + (datasource.max + 3)
- ];
- const oldMax = datasource.max;
- const _scrollTop = viewport.scrollTop();
-
- insertItems(datasource, datasource.max, newItems);
- scope.adapter.applyUpdates(oldMax, ['item' + oldMax, ...newItems]);
-
- scrollBottom(viewport);
- expect(viewport.scrollTop()).toBe(_scrollTop + newItems.length * itemHeight);
-
- checkRowBack(viewport, 1, (datasource.max - 0) + ': ' + newItems[2]);
- checkRowBack(viewport, 2, (datasource.max - 1) + ': ' + newItems[1]);
- checkRowBack(viewport, 3, (datasource.max - 2) + ': ' + newItems[0]);
- checkRowBack(viewport, 4, oldMax + ': item' + oldMax);
- }
- );
- });
-
- it('should append 3 rows via index-based applyUpdates when min/max indices are set', () => {
- runTest(Object.assign({}, scrollSettings, { startIndex: 28 }),
- (viewport, scope) => {
- const newItems = [
- 'item' + (datasource.max + 1),
- 'item' + (datasource.max + 2),
- 'item' + (datasource.max + 3)
- ];
- const oldMax = datasource.max;
-
- datasource.minIndex = datasource.min;
- datasource.maxIndex = datasource.max;
- const _scrollTop = viewport.scrollTop();
-
- insertItems(datasource, datasource.max, newItems);
- scope.adapter.applyUpdates(oldMax, ['item' + oldMax, ...newItems]);
-
- scrollBottom(viewport);
- expect(viewport.scrollTop()).toBe(_scrollTop + newItems.length * itemHeight);
-
- checkRowBack(viewport, 1, (datasource.max - 0) + ': ' + newItems[2]);
- checkRowBack(viewport, 2, (datasource.max - 1) + ': ' + newItems[1]);
- checkRowBack(viewport, 3, (datasource.max - 2) + ': ' + newItems[0]);
- checkRowBack(viewport, 4, oldMax + ': item' + oldMax);
- }
- );
- });
- });
-
-
- describe('Removing items via indexed-based applyUpdates when neither BOF nor EOF are reached\n', () => {
- const _scrollSettings = Object.assign({}, scrollSettings, { startIndex: 12 });
-
- [true, false].forEach(userIndices =>
- it('should remove first buffered row' + appendTitle(true, userIndices), () =>
- runTest(_scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- removeItem(datasource, 2);
- scope.adapter.applyUpdates(2, []);
-
- scrollBottom(viewport, MAX);
- expect(Helper.getBottomPadding(viewport)).toBe(0);
- checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount);
-
- scrollTop(viewport);
- expect(Helper.getTopPadding(viewport)).toBe(0);
- checkRow(viewport, 1, '1: item1');
- checkRow(viewport, 2, '2: item3');
- }
- )
- )
- );
-
- [true, false].forEach(userIndices =>
- it('should remove last buffered row' + appendTitle(true, userIndices), () =>
- runTest(_scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- removeItem(datasource, 19);
- scope.adapter.applyUpdates(19, []);
-
- scrollBottom(viewport);
- expect(Helper.getBottomPadding(viewport)).toBe(0);
- checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount);
-
- scrollTop(viewport);
- expect(Helper.getTopPadding(viewport)).toBe(0);
- }
- )
- )
- );
-
- [true, false].forEach(userIndices =>
- it('should remove absolute first row' + appendTitle(true, userIndices), () =>
- runTest(_scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- removeItem(datasource, 1);
- scope.adapter.applyUpdates(1, []);
-
- scrollBottom(viewport, MAX);
- expect(Helper.getBottomPadding(viewport)).toBe(0);
- checkRowBack(viewport, 1, itemsCount + ': item' + itemsCount);
-
- scrollTop(viewport);
- expect(Helper.getTopPadding(viewport)).toBe(0);
- checkRow(viewport, 1, '2: item2');
- checkRow(viewport, 2, '3: item3');
- }
- )
- )
- );
-
- [true, false].forEach(userIndices =>
- it('should remove absolute last row' + appendTitle(true, userIndices), () =>
- runTest(_scrollSettings,
- (viewport, scope) => {
- userIndices && setUserIndices();
-
- removeItem(datasource, itemsCount);
- scope.adapter.applyUpdates(itemsCount, []);
-
- scrollBottom(viewport, MAX);
- expect(Helper.getBottomPadding(viewport)).toBe(0);
- checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + (itemsCount - 1));
-
- scrollTop(viewport);
- expect(Helper.getTopPadding(viewport)).toBe(0);
- checkRow(viewport, 1, '1: item1');
- checkRow(viewport, 2, '2: item2');
- }
- )
- )
- );
- });
-
-});
+describe('uiScroll Paddings spec.', () => {
+ 'use strict';
+
+ let datasource;
+ beforeEach(module('ui.scroll'));
+ beforeEach(module('ui.scroll.test.datasources'));
+ beforeEach(
+ inject(function(myResponsiveDatasource) {
+ datasource = myResponsiveDatasource;
+ })
+ );
+
+ const itemsCount = 30;
+ const itemHeight = 100;
+ const viewportHeight = 500;
+ const MAX = 3; // maximum scrolling interations to reach out the EOF/BOF
+
+ const scrollSettings = {
+ datasource: 'myResponsiveDatasource',
+ adapter: 'adapter',
+ itemHeight: itemHeight,
+ viewportHeight: viewportHeight
+ };
+
+ function appendTitle(outside, indices) {
+ return (outside ? ' outside' : ' inside') + ' the buffer' + (indices ? ' when min/max indices are set': '');
+ }
+
+ function setUserIndices() {
+ datasource.minIndex = datasource.min;
+ datasource.maxIndex = datasource.max;
+ }
+
+ function scrollBottom(viewport, count = 1) {
+ for (var i = 0; i < count; i++) {
+ viewport.scrollTop(99999);
+ viewport.trigger('scroll');
+ }
+ }
+
+ function scrollTop(viewport, count = 1) {
+ for (var i = 0; i < count; i++) {
+ viewport.scrollTop(0);
+ viewport.trigger('scroll');
+ }
+ }
+
+ function removeItem(datasource, index) {
+ if(index >= datasource.min && index <= datasource.max) {
+ const indexRemoved = datasource.data.indexOf(datasource.data[index - datasource.min]);
+ if(indexRemoved > -1) {
+ datasource.data.splice(indexRemoved, 1);
+ if(index === datasource.min) {
+ datasource.min++;
+ }
+ else {
+ datasource.max--;
+ }
+ }
+ }
+ }
+
+ function insertItems(datasource, index, items = []) {
+ if(index >= datasource.min && index <= datasource.max && items.length) {
+ const indexToInsert = datasource.data.indexOf(datasource.data[index - datasource.min]);
+ if(indexToInsert > -1) {
+ datasource.data.splice(indexToInsert, 0, items);
+ datasource.max += items.length;
+ }
+ }
+ }
+
+ function checkRow(viewport, row, content, tail = false) {
+ var children = viewport.children();
+ if(tail) {
+ row = children.length - 1 - row;
+ }
+ const rowElement = children[row];
+ expect(rowElement.innerHTML).toBe(content);
+ }
+
+ function checkRowBack(viewport, row, content) {
+ checkRow(viewport, row, content, true);
+ }
+
+ it('\nshould set up properly', () => {
+ runTest(scrollSettings,
+ () => {
+ expect(datasource.min).toBe(1);
+ expect(datasource.max).toBe(itemsCount);
+ }
+ );
+ });
+
+ describe('Removing items via indexed-based applyUpdates\n', () => {
+
+ [true, false].forEach(outside =>
+ [true, false].forEach(userIndices =>
+ it('should remove last row' + appendTitle(outside, userIndices), () =>
+ runTest(scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ scrollBottom(viewport, MAX);
+ outside && scrollTop(viewport);
+ const initialBottomHeight = Helper.getBottomPadding(viewport);
+
+ removeItem(datasource, datasource.max);
+ scope.adapter.applyUpdates(itemsCount, []);
+ outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight);
+
+ !outside && scrollTop(viewport);
+ scrollBottom(viewport, MAX);
+ expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight);
+ checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + (itemsCount - 1));
+ }
+ )
+ )
+ )
+ );
+
+ [true, false].forEach(outside =>
+ [true, false].forEach(userIndices =>
+ it('should remove last row and then the next after last' + appendTitle(outside, userIndices), () =>
+ runTest(scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ scrollBottom(viewport, MAX);
+ outside && scrollTop(viewport);
+
+ const initialBottomHeight = Helper.getBottomPadding(viewport);
+ removeItem(datasource, datasource.max);
+ scope.adapter.applyUpdates(itemsCount, []);
+ removeItem(datasource, datasource.max);
+ scope.adapter.applyUpdates(itemsCount - 1, []);
+ outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight * 2);
+
+ !outside && scrollTop(viewport);
+ scrollBottom(viewport, MAX);
+ expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight * 2);
+ checkRowBack(viewport, 1, (itemsCount - 2) + ': item' + (itemsCount - 2));
+ }
+ )
+ )
+ )
+ );
+
+ [true, false].forEach(outside =>
+ [true, false].forEach(userIndices =>
+ it('should remove pre-last row' + appendTitle(outside, userIndices), () =>
+ runTest(scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ scrollBottom(viewport, MAX);
+ outside && scrollTop(viewport);
+
+ const initialBottomHeight = Helper.getBottomPadding(viewport);
+ removeItem(datasource, datasource.max - 1);
+ scope.adapter.applyUpdates(itemsCount - 1, []);
+ outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight);
+
+ !outside && scrollTop(viewport);
+ scrollBottom(viewport, MAX);
+ expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight);
+ checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount);
+ checkRowBack(viewport, 2, (itemsCount - 2) + ': item' + (itemsCount - 2));
+ }
+ )
+ )
+ )
+ );
+
+ [true, false].forEach(outside =>
+ [true, false].forEach(userIndices =>
+ it('should remove first row' + appendTitle(outside, userIndices), () =>
+ runTest(scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ outside && scrollBottom(viewport, MAX);
+
+ const initialTopHeight = Helper.getTopPadding(viewport);
+ removeItem(datasource, datasource.min);
+ scope.adapter.applyUpdates(1, []);
+ outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight);
+
+ !outside && scrollBottom(viewport, MAX);
+ expect(Helper.getBottomPadding(viewport)).toBe(0);
+
+ scrollTop(viewport);
+ expect(Helper.getTopPadding(viewport)).toBe(0);
+ checkRow(viewport, 1, '2: item2');
+ }
+ )
+ )
+ )
+ );
+
+ [true, false].forEach(outside =>
+ [true, false].forEach(userIndices =>
+ it('should remove first row and then the next after first' + appendTitle(outside, userIndices), () =>
+ runTest(scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ outside && scrollBottom(viewport, MAX);
+
+ const initialTopHeight = Helper.getTopPadding(viewport);
+ removeItem(datasource, datasource.min);
+ scope.adapter.applyUpdates(1, []);
+ removeItem(datasource, datasource.min);
+ scope.adapter.applyUpdates(2, []);
+ outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight * 2);
+
+ !outside && scrollBottom(viewport, MAX);
+ expect(Helper.getBottomPadding(viewport)).toBe(0);
+
+ scrollTop(viewport);
+ expect(Helper.getTopPadding(viewport)).toBe(0);
+ checkRow(viewport, 1, '3: item3');
+ }
+ )
+ )
+ )
+ );
+
+ [true, false].forEach(outside =>
+ [true, false].forEach(userIndices =>
+ it('should remove second row' + appendTitle(outside, userIndices), () =>
+ runTest(scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ outside && scrollBottom(viewport, MAX);
+
+ const initialTopHeight = Helper.getTopPadding(viewport);
+ removeItem(datasource, datasource.min + 1);
+ scope.adapter.applyUpdates(2, []);
+ outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight * 1);
+
+ !outside && scrollBottom(viewport, MAX);
+ expect(Helper.getBottomPadding(viewport)).toBe(0);
+
+ scrollTop(viewport);
+ expect(Helper.getTopPadding(viewport)).toBe(0);
+ checkRow(viewport, 1, '1: item1');
+ checkRow(viewport, 2, '2: item3');
+ }
+ )
+ )
+ )
+ );
+ });
+
+ describe('Appending inside the buffer\n', () => {
+
+ it('should append 3 rows via index-based applyUpdates', () => {
+ runTest(Object.assign({}, scrollSettings, { startIndex: 28 }),
+ (viewport, scope) => {
+ const newItems = [
+ 'item' + (datasource.max + 1),
+ 'item' + (datasource.max + 2),
+ 'item' + (datasource.max + 3)
+ ];
+ const oldMax = datasource.max;
+ const _scrollTop = viewport.scrollTop();
+
+ insertItems(datasource, datasource.max, newItems);
+ scope.adapter.applyUpdates(oldMax, ['item' + oldMax, ...newItems]);
+
+ scrollBottom(viewport);
+ expect(viewport.scrollTop()).toBe(_scrollTop + newItems.length * itemHeight);
+
+ checkRowBack(viewport, 1, (datasource.max - 0) + ': ' + newItems[2]);
+ checkRowBack(viewport, 2, (datasource.max - 1) + ': ' + newItems[1]);
+ checkRowBack(viewport, 3, (datasource.max - 2) + ': ' + newItems[0]);
+ checkRowBack(viewport, 4, oldMax + ': item' + oldMax);
+ }
+ );
+ });
+
+ it('should append 3 rows via index-based applyUpdates when min/max indices are set', () => {
+ runTest(Object.assign({}, scrollSettings, { startIndex: 28 }),
+ (viewport, scope) => {
+ const newItems = [
+ 'item' + (datasource.max + 1),
+ 'item' + (datasource.max + 2),
+ 'item' + (datasource.max + 3)
+ ];
+ const oldMax = datasource.max;
+
+ datasource.minIndex = datasource.min;
+ datasource.maxIndex = datasource.max;
+ const _scrollTop = viewport.scrollTop();
+
+ insertItems(datasource, datasource.max, newItems);
+ scope.adapter.applyUpdates(oldMax, ['item' + oldMax, ...newItems]);
+
+ scrollBottom(viewport);
+ expect(viewport.scrollTop()).toBe(_scrollTop + newItems.length * itemHeight);
+
+ checkRowBack(viewport, 1, (datasource.max - 0) + ': ' + newItems[2]);
+ checkRowBack(viewport, 2, (datasource.max - 1) + ': ' + newItems[1]);
+ checkRowBack(viewport, 3, (datasource.max - 2) + ': ' + newItems[0]);
+ checkRowBack(viewport, 4, oldMax + ': item' + oldMax);
+ }
+ );
+ });
+ });
+
+
+ describe('Removing items via indexed-based applyUpdates when neither BOF nor EOF are reached\n', () => {
+ const _scrollSettings = Object.assign({}, scrollSettings, { startIndex: 12 });
+
+ [true, false].forEach(userIndices =>
+ it('should remove first buffered row' + appendTitle(true, userIndices), () =>
+ runTest(_scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ removeItem(datasource, 2);
+ scope.adapter.applyUpdates(2, []);
+
+ scrollBottom(viewport, MAX);
+ expect(Helper.getBottomPadding(viewport)).toBe(0);
+ checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount);
+
+ scrollTop(viewport);
+ expect(Helper.getTopPadding(viewport)).toBe(0);
+ checkRow(viewport, 1, '1: item1');
+ checkRow(viewport, 2, '2: item3');
+ }
+ )
+ )
+ );
+
+ [true, false].forEach(userIndices =>
+ it('should remove last buffered row' + appendTitle(true, userIndices), () =>
+ runTest(_scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ removeItem(datasource, 19);
+ scope.adapter.applyUpdates(19, []);
+
+ scrollBottom(viewport);
+ expect(Helper.getBottomPadding(viewport)).toBe(0);
+ checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount);
+
+ scrollTop(viewport);
+ expect(Helper.getTopPadding(viewport)).toBe(0);
+ }
+ )
+ )
+ );
+
+ [true, false].forEach(userIndices =>
+ it('should remove absolute first row' + appendTitle(true, userIndices), () =>
+ runTest(_scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ removeItem(datasource, 1);
+ scope.adapter.applyUpdates(1, []);
+
+ scrollBottom(viewport, MAX);
+ expect(Helper.getBottomPadding(viewport)).toBe(0);
+ checkRowBack(viewport, 1, itemsCount + ': item' + itemsCount);
+
+ scrollTop(viewport);
+ expect(Helper.getTopPadding(viewport)).toBe(0);
+ checkRow(viewport, 1, '2: item2');
+ checkRow(viewport, 2, '3: item3');
+ }
+ )
+ )
+ );
+
+ [true, false].forEach(userIndices =>
+ it('should remove absolute last row' + appendTitle(true, userIndices), () =>
+ runTest(_scrollSettings,
+ (viewport, scope) => {
+ userIndices && setUserIndices();
+
+ removeItem(datasource, itemsCount);
+ scope.adapter.applyUpdates(itemsCount, []);
+
+ scrollBottom(viewport, MAX);
+ expect(Helper.getBottomPadding(viewport)).toBe(0);
+ checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + (itemsCount - 1));
+
+ scrollTop(viewport);
+ expect(Helper.getTopPadding(viewport)).toBe(0);
+ checkRow(viewport, 1, '1: item1');
+ checkRow(viewport, 2, '2: item2');
+ }
+ )
+ )
+ );
+ });
+
+});
diff --git a/test/config/karma.conf.files.js b/test/config/karma.conf.files.js
index 3570fb61..905af763 100644
--- a/test/config/karma.conf.files.js
+++ b/test/config/karma.conf.files.js
@@ -1,31 +1,31 @@
-const files = [
- 'https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js',
- 'https://ajax.googleapis.com/ajax/libs/angularjs/1.6.5/angular.js',
- 'https://ajax.googleapis.com/ajax/libs/angularjs/1.6.5/angular-mocks.js',
- '../misc/test.css',
- '../misc/datasources.js',
- '../misc/scaffolding*.js',
- '../misc/helpers.js',
- {
- pattern: '../*Spec.js',
- watched: false,
- served: true,
- included: true
- }
-];
-
-module.exports.development = [
- ...files,
- '../../src/ui-scroll.js',
- '../../src/ui-scroll-grid.js'
-];
-
-module.exports.production = [
- ...files,
- '../../dist/ui-scroll.min.js',
- '../../dist/ui-scroll-grid.min.js',
- {
- pattern: '../../dist/*.js.map',
- included: false
- }
-];
+const files = [
+ 'https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js',
+ 'https://ajax.googleapis.com/ajax/libs/angularjs/1.6.5/angular.js',
+ 'https://ajax.googleapis.com/ajax/libs/angularjs/1.6.5/angular-mocks.js',
+ '../misc/test.css',
+ '../misc/datasources.js',
+ '../misc/scaffolding*.js',
+ '../misc/helpers.js',
+ {
+ pattern: '../*Spec.js',
+ watched: false,
+ served: true,
+ included: true
+ }
+];
+
+module.exports.development = [
+ ...files,
+ '../../src/ui-scroll.js',
+ '../../src/ui-scroll-grid.js'
+];
+
+module.exports.production = [
+ ...files,
+ '../../dist/ui-scroll.min.js',
+ '../../dist/ui-scroll-grid.min.js',
+ {
+ pattern: '../../dist/*.js.map',
+ included: false
+ }
+];
diff --git a/test/misc/scaffoldingGrid.js b/test/misc/scaffoldingGrid.js
index 5f9a3408..04475533 100644
--- a/test/misc/scaffoldingGrid.js
+++ b/test/misc/scaffoldingGrid.js
@@ -1,68 +1,68 @@
-/* exported runGridTest */
-
-function createGridHtml (settings) {
- 'use strict';
- var viewportStyle = ' style="height:' + (settings.viewportHeight || 200) + 'px"';
- var columns = ['col0', 'col1', 'col2', 'col3'];
-
- var html =
- '' +
- '' +
- '';
- columns.forEach(col => { html +=
- '' + col + ' ';
- }); html +=
- ' ' +
- ' ' +
- '' +
- '';
- if(settings.rowTemplate) {
- html += settings.rowTemplate;
- } else {
- columns.forEach(col => { html +=
- '{{item.' + col + '}} ';
- });
- } html +=
- ' ' +
- ' ' +
- '
';
- return html;
-}
-
-function finalize(scroller, options, scope, $timeout) {
- 'use strict';
- options = options || {};
- scroller.remove();
-
- if (typeof options.cleanupTest === 'function') {
- options.cleanupTest(scroller, scope, $timeout);
- }
-}
-
-function runGridTest(scrollSettings, run, options) {
- 'use strict';
- options = options || {};
- inject(function($rootScope, $compile, $window, $timeout) {
- var scroller = angular.element(createGridHtml(scrollSettings));
- var scope = $rootScope.$new();
-
- angular.element(document).find('body').append(scroller);
- var head = angular.element(scroller.children()[0]);
- var body = angular.element(scroller.children()[1]);
-
- if (options.scope) {
- angular.extend(scope, options.scope);
- }
-
- $compile(scroller)(scope);
-
- scope.$apply();
- $timeout.flush();
-
- try {
- run(head, body, scope, $timeout);
- } finally {
- finalize(scroller, options, scope, $timeout);
- }
- });
+/* exported runGridTest */
+
+function createGridHtml (settings) {
+ 'use strict';
+ var viewportStyle = ' style="height:' + (settings.viewportHeight || 200) + 'px"';
+ var columns = ['col0', 'col1', 'col2', 'col3'];
+
+ var html =
+ '' +
+ '' +
+ '';
+ columns.forEach(col => { html +=
+ '' + col + ' ';
+ }); html +=
+ ' ' +
+ ' ' +
+ '' +
+ '';
+ if(settings.rowTemplate) {
+ html += settings.rowTemplate;
+ } else {
+ columns.forEach(col => { html +=
+ '{{item.' + col + '}} ';
+ });
+ } html +=
+ ' ' +
+ ' ' +
+ '
';
+ return html;
+}
+
+function finalize(scroller, options, scope, $timeout) {
+ 'use strict';
+ options = options || {};
+ scroller.remove();
+
+ if (typeof options.cleanupTest === 'function') {
+ options.cleanupTest(scroller, scope, $timeout);
+ }
+}
+
+function runGridTest(scrollSettings, run, options) {
+ 'use strict';
+ options = options || {};
+ inject(function($rootScope, $compile, $window, $timeout) {
+ var scroller = angular.element(createGridHtml(scrollSettings));
+ var scope = $rootScope.$new();
+
+ angular.element(document).find('body').append(scroller);
+ var head = angular.element(scroller.children()[0]);
+ var body = angular.element(scroller.children()[1]);
+
+ if (options.scope) {
+ angular.extend(scope, options.scope);
+ }
+
+ $compile(scroller)(scope);
+
+ scope.$apply();
+ $timeout.flush();
+
+ try {
+ run(head, body, scope, $timeout);
+ } finally {
+ finalize(scroller, options, scope, $timeout);
+ }
+ });
}
\ No newline at end of file
diff --git a/test/misc/test.css b/test/misc/test.css
index d7af5c04..70657749 100644
--- a/test/misc/test.css
+++ b/test/misc/test.css
@@ -1,6 +1,6 @@
-.grid { width: 250px; }
-.col0 { width: 40px; }
-.col1 { width: 80px; }
-.col2 { width: 40px; }
-.col3 { width: 50px; }
+.grid { width: 250px; }
+.col0 { width: 40px; }
+.col1 { width: 80px; }
+.col2 { width: 40px; }
+.col3 { width: 50px; }
.item:nth-child(odd) { background-color: #e6e6e6; }
\ No newline at end of file