PLANET-7635 Move remaining code from plugin

This is in preparation to finally retire it

assets/src/block-editor/AssignOnlyFlatTermSelector/index.js

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+/**
+ * The logic of this component was copied from https://github.com/WordPress/gutenberg/blob/master/packages/editor/src/components/post-taxonomies/flat-term-selector.js
+ * initially, then the functionality of creating non-existing terms was removed from it.
+ */
+
+/**
+ * WordPress dependencies
+ */
+import {useEffect, useMemo, useState} from '@wordpress/element';
+import {FormTokenField, withFilters} from '@wordpress/components';
+import {useSelect, useDispatch} from '@wordpress/data';
+import {store as coreStore} from '@wordpress/core-data';
+import {useDebounce} from '@wordpress/compose';
+import {decodeEntities} from '@wordpress/html-entities';
+
+const {__, _x, sprintf} = wp.i18n;
+
+/**
+ * Shared reference to an empty array for cases where it is important to avoid
+ * returning a new array reference on every invocation.
+ *
+ * @type {Array<any>}
+ */
+const EMPTY_ARRAY = [];
+
+/**
+ * Module constants
+ */
+const MAX_TERMS_SUGGESTIONS = 20;
+const DEFAULT_QUERY = {
+  per_page: MAX_TERMS_SUGGESTIONS,
+  _fields: 'id,name',
+  context: 'view',
+};
+
+const isSameTermName = (termA, termB) =>
+  decodeEntities(termA).toLowerCase() ===
+  decodeEntities(termB).toLowerCase();
+
+const termNamesToIds = (names, terms) => names.map(
+  termName => terms.find(term => isSameTermName(term.name, termName)).id
+);
+
+export const AssignOnlyFlatTermSelector = ({slug}) => {
+  const [values, setValues] = useState([]);
+  const [search, setSearch] = useState('');
+  const debouncedSearch = useDebounce(setSearch, 500);
+
+  const {
+    terms,
+    taxonomy,
+    hasAssignAction,
+    hasResolvedTerms,
+  } = useSelect(
+    select => {
+      const {getCurrentPost, getEditedPostAttribute} = select('core/editor');
+      const {getEntityRecords, getTaxonomy, hasFinishedResolution} = select(coreStore);
+      const post = getCurrentPost();
+      const _taxonomy = getTaxonomy(slug);
+      const _termIds = _taxonomy ? getEditedPostAttribute(_taxonomy.rest_base) : EMPTY_ARRAY;
+
+      const query = {
+        ...DEFAULT_QUERY,
+        include: _termIds.join(','),
+        per_page: -1,
+      };
+
+      return {
+        hasAssignAction: _taxonomy ? post._links?.['wp:action-assign-' + _taxonomy.rest_base] ?? false : false,
+        taxonomy: _taxonomy,
+        termIds: _termIds,
+        terms: _termIds.length ? getEntityRecords('taxonomy', slug, query) : EMPTY_ARRAY,
+        hasResolvedTerms: hasFinishedResolution('getEntityRecords', ['taxonomy', slug, query]),
+      };
+    },
+    [slug]
+  );
+
+  const {searchResults} = useSelect(
+    select => {
+      const {getEntityRecords} = select(coreStore);
+
+      return {
+        searchResults: !!search ? getEntityRecords('taxonomy', slug, {
+          ...DEFAULT_QUERY,
+          search,
+        }) : EMPTY_ARRAY,
+      };
+    },
+    [search, slug]
+  );
+
+  // Update terms state only after the selectors are resolved.
+  // We're using this to avoid terms temporarily disappearing on slow networks
+  // while core data makes REST API requests.
+  useEffect(() => {
+    if (hasResolvedTerms) {
+      const newValues = (terms ?? []).map(term =>
+        decodeEntities(term.name)
+      );
+
+      setValues(newValues);
+    }
+  }, [terms, hasResolvedTerms]);
+
+  const suggestions = useMemo(() => {
+    return (searchResults ?? []).map(term =>
+      decodeEntities(term.name)
+    );
+  }, [searchResults]);
+
+  const {editPost} = useDispatch('core/editor');
+
+  if (!hasAssignAction) {
+    return null;
+  }
+
+  function onUpdateTerms(newTermIds) {
+    editPost({[taxonomy.rest_base]: newTermIds});
+  }
+
+  function onChange(termNames) {
+    const availableTerms = [
+      ...(terms ?? []),
+      ...(searchResults ?? []),
+    ];
+
+    const uniqueTerms = termNames.reduce((acc, name) => {
+      if (
+        !acc.some(n => n.toLowerCase() === name.toLowerCase())
+      ) {
+        acc.push(name);
+      }
+      return acc;
+    }, []);
+
+    // Filter to remove new terms since we don't allow creation.
+    const allowedTerms = uniqueTerms.filter(
+      termName => availableTerms.find(term => isSameTermName(term.name, termName))
+    );
+
+    setValues(allowedTerms);
+
+    return onUpdateTerms(termNamesToIds(allowedTerms, availableTerms));
+  }
+
+  const newTermLabel =
+    taxonomy?.labels?.add_new_item ??
+    (slug === 'post_tag' ? __('Add new tag') : __('Add new Term'));
+  const singularName =
+    taxonomy?.labels?.singular_name ??
+    (slug === 'post_tag' ? __('Tag') : __('Term'));
+  const termAddedLabel = sprintf(
+    /* translators: %s: term name. */
+    _x('%s added', 'term'),
+    singularName
+  );
+  const termRemovedLabel = sprintf(
+    /* translators: %s: term name. */
+    _x('%s removed', 'term'),
+    singularName
+  );
+  const removeTermLabel = sprintf(
+    /* translators: %s: term name. */
+    _x('Remove %s', 'term'),
+    singularName
+  );
+
+  return (
+    <FormTokenField
+      __next40pxDefaultSize
+      value={values}
+      suggestions={suggestions}
+      onChange={onChange}
+      onInputChange={debouncedSearch}
+      maxSuggestions={MAX_TERMS_SUGGESTIONS}
+      label={newTermLabel}
+      messages={{
+        added: termAddedLabel,
+        removed: termRemovedLabel,
+        remove: removeTermLabel,
+      }}
+    />
+  );
+};
+
+export default withFilters('editor.PostTaxonomyType')(AssignOnlyFlatTermSelector);

assets/src/block-editor/BlockFilters/ImageBlockEdit.js

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+/**
+ * Return an editable image block
+ *
+ * - display image credits in caption during edition
+ *
+ * @param {Object} BlockEdit
+ * @return {Object} interface to edit images on the Editor
+ */
+export const ImageBlockEdit = BlockEdit => props => {
+  if ('core/image' !== props.name) {
+    return <BlockEdit {...props} />;
+  }
+
+  const {attributes, clientId} = props;
+  const {id, className = ''} = attributes;
+
+  // Get image data
+  const image = wp.data.useSelect(select => id ? select('core').getMedia(id) : null);
+  const credits = image?.meta?._credit_text;
+  const captionText = image?.caption?.raw;
+  // Compile data for insertion
+  let image_credits = null;
+  if (credits && credits.length > 0 && (!captionText || !captionText.includes(credits))) {
+    image_credits = credits.includes('©') ? credits : `© ${credits}`;
+  }
+
+  const block_id = clientId ? `block-${clientId}` : null;
+
+  // Update width and height when sized rounded styles are selected
+  if (className.includes('is-style-rounded-')) {
+    const classes = className.split(' ');
+    const size = classes.find(c => c.includes('is-style-rounded-')).replace('is-style-rounded-', '') || 180;
+    attributes.width = parseInt(size);
+    attributes.height = parseInt(size);
+  }
+
+  // Force to use square images when the class `square-*` is added
+  if (className.includes('square-')) {
+    const size = className.slice(className.search('square-') + 'square-'.length).split(' ')[0] || 180;
+    attributes.width = parseInt(size);
+    attributes.height = parseInt(size);
+  }
+
+  return (
+    <>
+      <BlockEdit {...props} />
+      {block_id && image_credits && (
+        captionText ?
+          <style dangerouslySetInnerHTML={{
+            __html: `#${block_id} figcaption::after { content: " ${image_credits}"; }`,
+          }}>
+          </style> :
+          <figcaption style={{marginTop: -24}}>{image_credits}</figcaption>
+      )}
+    </>
+  );
+};

assets/src/block-editor/BlockFilters/index.js

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+const {addFilter} = wp.hooks;
+
+import {ImageBlockEdit} from './ImageBlockEdit';
+
+export const addBlockFilters = () => {
+  addFileBlockFilter();
+  addImageBlockFilter();
+  addGravityFormsBlockFilter();
+};
+
+const addFileBlockFilter = () => {
+  const setDownloadButtonToggleDefaultFalse = (settings, name) => {
+    if ('core/file' !== name) {
+      return settings;
+    }
+
+    settings.attributes.showDownloadButton.default = false;
+
+    return settings;
+  };
+
+  addFilter('blocks.registerBlockType', 'planet4-blocks/filters/file', setDownloadButtonToggleDefaultFalse);
+};
+
+const addImageBlockFilter = () => addFilter('editor.BlockEdit', 'core/image/edit', ImageBlockEdit);
+
+// Enforce "AJAX" toggle setting enabled by default, on Gravity form block.
+const addGravityFormsBlockFilter = () => {
+  const setAJAXToggleDefaultTrue = (settings, name) => {
+    if ('gravityforms/form' !== name) {
+      return settings;
+    }
+
+    settings.attributes.ajax.default = true;
+
+    return settings;
+  };
+
+  addFilter('blocks.registerBlockType', 'planet4-blocks/filters/gravity-form', setAJAXToggleDefaultTrue);
+};