Feat(web): Introduce UNSTABLE Toggle component #DS-1345

lmc-eu · Jul 16, 2024 · b39ec4e · b39ec4e
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diff --git a/packages/web/src/scss/components/UNSTABLE_Toggle/README.md b/packages/web/src/scss/components/UNSTABLE_Toggle/README.md
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+# UNSTABLE Toggle
+
+> ⚠️ This component is UNSTABLE. It may significantly change at any point in the future.
+> Please use it with caution.
+
+Toggle is a form control that allows users to switch between two states.
+
+## Basic Usage
+
+The Toggle component implements the HTML [checkbox input][mdn-checkbox] element. It uses
+the native input element and styles it to look like a toggle switch.
+
+```html
+<label for="toggle-default" class="UNSTABLE_Toggle">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label">Toggle Label</span>
+  </span>
+  <input type="checkbox" id="toggle-default" class="UNSTABLE_Toggle__input" name="default" />
+</label>
+```
+
+## Indicators
+
+If you need to indicate the state of the toggle, you can add the `UNSTABLE_Toggle__input--indicators`
+modifier class to the input. This will add a visual indicators to the toggle switch.
+
+```html
+<label for="toggle-indicators" class="UNSTABLE_Toggle">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label">Toggle Label</span>
+  </span>
+  <input
+    type="checkbox"
+    id="toggle-indicators"
+    class="UNSTABLE_Toggle__input UNSTABLE_Toggle__input--indicators"
+    name="default"
+  />
+</label>
+```
+
+## Required
+
+Add the `required` attribute to the input to mark it as required and add the
+`UNSTABLE_Toggle__label--required` modifier class to the label to indicate the state.
+
+```html
+<label for="toggle-required" class="UNSTABLE_Toggle">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label UNSTABLE_Toggle__label--required">Toggle Label</span>
+  </span>
+  <input type="checkbox" id="toggle-required" class="UNSTABLE_Toggle__input" name="required" required />
+</label>
+```
+
+## Hidden Label
+
+```html
+<label for="toggle-hidden-label" class="UNSTABLE_Toggle">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label UNSTABLE_Toggle__label--hidden">Toggle Label</span>
+  </span>
+  <input type="checkbox" id="toggle-hidden-label" class="UNSTABLE_Toggle__input" name="hidden-label" />
+</label>
+```
+
+## Fluid
+
+```html
+<label for="toggle-fluid" class="UNSTABLE_Toggle UNSTABLE_Toggle--fluid">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label">Toggle Label</span>
+  </span>
+  <input type="checkbox" id="toggle-fluid" class="UNSTABLE_Toggle__input" name="fluid" />
+</label>
+```
+
+## Helper Text
+
+```html
+<label for="toggle-helper-text" class="UNSTABLE_Toggle">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label">Toggle Label</span>
+    <span class="UNSTABLE_Toggle__helperText" id="toggle-helper-text-helper-text">Helper text</span>
+  </span>
+  <input
+    type="checkbox"
+    id="toggle-helper-text"
+    class="UNSTABLE_Toggle__input"
+    name="helper-text"
+    aria-describedby="toggle-helper-text-helper-text"
+  />
+</label>
+```
+
+## Validation States
+
+Validation states can be presented either by adding a CSS modifier class
+(`UNSTABLE_Toggle--success`, `UNSTABLE_Toggle--warning`, `UNSTABLE_Toggle--danger`), or by adding
+a JS interaction class when controlled by JavaScript (`has-success`,
+`has-warning`, `has-danger`). See Validation state [dictionary][dictionary-validation].
+
+```html
+<label for="toggle-success" class="UNSTABLE_Toggle UNSTABLE_Toggle--success">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label">Toggle Label</span>
+  </span>
+  <input type="checkbox" id="toggle-success" class="UNSTABLE_Toggle__input" name="default" />
+</label>
+
+<label for="toggle-warning" class="UNSTABLE_Toggle UNSTABLE_Toggle--warning">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label">Toggle Label</span>
+    <span class="UNSTABLE_Toggle__validationText" id="toggle-warning-validation-text">Validation text</span>
+  </span>
+  <input
+    type="checkbox"
+    id="toggle-warning"
+    class="UNSTABLE_Toggle__input"
+    name="default"
+    aria-describedby="toggle-warning-validation-text"
+    checked
+  />
+</label>
+
+<div class="UNSTABLE_Toggle UNSTABLE_Toggle--danger">
+  <div class="UNSTABLE_Toggle__text">
+    <label for="toggle-danger" class="UNSTABLE_Toggle__label">Toggle Label</label>
+    <ul class="UNSTABLE_Toggle__validationText" id="toggle-danger-validation-text">
+      <li>First validation text</li>
+      <li>Second validation text</li>
+    </ul>
+  </div>
+  <input
+    type="checkbox"
+    id="toggle-danger"
+    class="UNSTABLE_Toggle__input"
+    name="default"
+    aria-describedby="toggle-danger-validation-text"
+  />
+</div>
+```
+
+### JavaScript-Controlled Validation Text
+
+When implementing client-side form validation, use JS interaction state classes
+(`has-success`, `has-warning`, `has-danger`) on the wrapping `<div>` element and
+render validation texts in a `<div>` or `<ul>` with `data-spirit-element="validation_text"`
+attribute. This way your JS remains disconnected from CSS that may or may not be
+[prefixed][prefixed].
+
+**Remember this approach is only valid for vanilla JS implementation. React
+components mix CSS with JS by design and handle prefixes their own way.**
+
+```html
+<label for="toggle-success" class="UNSTABLE_Toggle has-success">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label">Toggle Label</span>
+    <div
+      class="UNSTABLE_Toggle__validationText"
+      id="toggle-success-validation-text"
+      data-spirit-element="validation_text"
+    >
+      Validation text
+    </div>
+  </span>
+  <input
+    type="checkbox"
+    id="toggle-success"
+    class="UNSTABLE_Toggle__input"
+    name="default"
+    aria-describedby="toggle-success-validation-text"
+  />
+</label>
+```
+
+## Disabled State
+
+On top of adding the `disabled` attribute to the input, disabled Toggle needs to
+be marked by adding `UNSTABLE_Toggle--disabled` modifier class, or with `is-disabled`
+JS interaction class when controlled by JavaScript:
+
+```html
+<label for="toggle-disabled" class="UNSTABLE_Toggle UNSTABLE_Toggle--disabled">
+  <span class="UNSTABLE_Toggle__text">
+    <span class="UNSTABLE_Toggle__label">Toggle Label</span>
+  </span>
+  <input type="checkbox" id="toggle-disabled" class="UNSTABLE_Toggle__input" name="default" disabled />
+</label>
+```
+
+[dictionary-validation]: https://github.com/lmc-eu/spirit-design-system/blob/main/docs/DICTIONARIES.md#validation
+[mdn-checkbox]: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/checkbox
+[prefixed]: https://github.com/lmc-eu/spirit-design-system/blob/main/packages/web/README.md#prefixing-css-class-names
diff --git a/packages/web/src/scss/components/UNSTABLE_Toggle/_UNSTABLE_Toggle.scss b/packages/web/src/scss/components/UNSTABLE_Toggle/_UNSTABLE_Toggle.scss
@@ -0,0 +1,128 @@
+@use 'theme';
+@use '../../settings/cursors';
+@use '../../theme/form-fields' as form-fields-theme;
+@use '../../tools/form-fields' as form-fields-tools;
+@use '../../tools/svg';
+
+$_field-name: 'UNSTABLE_Toggle';
+
+.UNSTABLE_Toggle {
+    display: flex;
+    align-items: start;
+    justify-content: space-between;
+    max-width: theme.$max-width;
+    margin-block: form-fields-theme.$gap;
+    cursor: cursors.$form-fields;
+}
+
+.UNSTABLE_Toggle--fluid {
+    max-width: none;
+}
+
+.UNSTABLE_Toggle__text {
+    margin-right: form-fields-theme.$gap;
+}
+
+.UNSTABLE_Toggle__label {
+    @include form-fields-tools.inline-field-label();
+}
+
+.UNSTABLE_Toggle__label--hidden {
+    @include form-fields-tools.label-hidden();
+}
+
+.UNSTABLE_Toggle__label--required::after {
+    @include form-fields-tools.label-required();
+}
+
+.UNSTABLE_Toggle__input {
+    @include form-fields-tools.inline-field-input();
+
+    flex-shrink: 0;
+    width: theme.$input-width;
+    height: theme.$input-height;
+    border: theme.$input-border-width solid form-fields-theme.$inline-field-input-color-unchecked;
+    border-radius: theme.$input-border-radius;
+    background-image: svg.escape(theme.$input-mark);
+    background-position-x: theme.$input-mark-position-x;
+    background-position-y: theme.$input-mark-position-y;
+    background-size: theme.$input-mark-width theme.$input-mark-height;
+    background-repeat: no-repeat;
+    background-color: form-fields-theme.$inline-field-input-color-unchecked;
+
+    @media (prefers-reduced-motion: no-preference) {
+        transition-property: border-color, background-color, background-position;
+        transition-duration: theme.$input-transition-duration;
+        transition-timing-function: theme.$input-transition-timing;
+    }
+
+    &:focus {
+        background-color: form-fields-theme.$inline-field-input-color-unchecked-active;
+        box-shadow: theme.$input-focus-shadow;
+    }
+
+    &:checked {
+        border-color: form-fields-theme.$inline-field-input-color-checked;
+        background-position-x: theme.$input-mark-position-x-checked;
+        background-color: form-fields-theme.$inline-field-input-color-checked;
+    }
+
+    @media (hover: hover) {
+        &:hover {
+            background-color: form-fields-theme.$inline-field-input-color-unchecked-hover;
+        }
+
+        &:checked:hover {
+            background-color: form-fields-theme.$inline-field-input-color-checked-hover;
+        }
+    }
+}
+
+.UNSTABLE_Toggle__input--indicators {
+    background-image: svg.escape(theme.$input-mark-indicators);
+}
+
+.UNSTABLE_Toggle__validationText,
+.UNSTABLE_Toggle > .UNSTABLE_Toggle__text > [data-spirit-element='validation_text'] {
+    @include form-fields-tools.validation-text();
+}
+
+.UNSTABLE_Toggle__helperText {
+    @include form-fields-tools.helper-text();
+}
+
+@include form-fields-tools.input-field-validation-states($_field-name);
+
+.UNSTABLE_Toggle--disabled {
+    @include form-fields-tools.inline-field-root-disabled();
+}
+
+.UNSTABLE_Toggle--disabled .UNSTABLE_Toggle__label {
+    @include form-fields-tools.label-disabled();
+}
+
+.UNSTABLE_Toggle--disabled > .UNSTABLE_Toggle__input,
+.UNSTABLE_Toggle > .UNSTABLE_Toggle__input:disabled {
+    @include form-fields-tools.input-disabled();
+
+    border-color: theme.$input-border-color-disabled;
+    background-image: svg.escape(theme.$input-mark-disabled);
+    background-color: transparent;
+}
+
+.UNSTABLE_Toggle__input:checked:focus {
+    background-color: form-fields-theme.$inline-field-input-color-checked-active;
+}
+
+.UNSTABLE_Toggle--disabled > .UNSTABLE_Toggle__input:checked,
+.UNSTABLE_Toggle > .UNSTABLE_Toggle__input:disabled:checked {
+    background-image: svg.escape(theme.$input-mark-disabled-checked);
+}
+
+.UNSTABLE_Toggle--disabled .UNSTABLE_Toggle__validationText {
+    @include form-fields-tools.validation-text-disabled();
+}
+
+.UNSTABLE_Toggle--disabled .UNSTABLE_Toggle__helperText {
+    @include form-fields-tools.helper-text-disabled();
+}
diff --git a/packages/web/src/scss/components/UNSTABLE_Toggle/_theme.scss b/packages/web/src/scss/components/UNSTABLE_Toggle/_theme.scss
@@ -0,0 +1,21 @@
+@use '@tokens' as tokens;
+@use '../../settings/transitions';
+
+$max-width: 21rem;
+$input-border-width: tokens.$border-width-100;
+$input-border-radius: 12px;
+$input-width: 44px;
+$input-height: 24px;
+$input-mark-height: 44px;
+$input-mark-width: 52px;
+$input-mark-position-y: -7px; // Position of the mark is offset because it has a shadow
+$input-mark-position-x: -15px; // Position of the mark in non-checked state
+$input-mark-position-x-checked: $input-mark-position-x + 20px; // Position of the mark in checked state
+$input-mark: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="#{$input-mark-width}" height="#{$input-mark-height}" viewBox="0 0 52 44" fill="none"><g xmlns="http://www.w3.org/2000/svg" filter="url(#a)"><circle xmlns="http://www.w3.org/2000/svg" cx="26" cy="18" r="10" fill="#{tokens.$background-basic}"/></g><defs><filter id="a" width="44" height="44" x="4" y="0" color-interpolation-filters="sRGB" filterUnits="userSpaceOnUse"><feFlood flood-opacity="0" result="BackgroundImageFix"/><feColorMatrix in="SourceAlpha" result="hardAlpha" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 127 0"/><feOffset dy="4"/><feGaussianBlur stdDeviation="6"/><feColorMatrix values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.2 0"/><feBlend in2="BackgroundImageFix" result="effect1_dropShadow_1_81"/><feBlend in="SourceGraphic" in2="effect1_dropShadow_1_81" result="shape"/></filter></defs></svg>');
+$input-mark-indicators: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="#{$input-mark-width}" height="#{$input-mark-height}" viewBox="0 0 52 44" fill="none"><path fill="#{tokens.$background-basic}" d="M48.675 14.33a.58.58 0 0 0-.822 0L45 17.178l-2.852-2.852a.58.58 0 1 0-.823.823L44.177 18l-2.852 2.852a.58.58 0 1 0 .822.823L45 18.823l2.852 2.852a.58.58 0 1 0 .823-.823L45.823 18l2.852-2.852a.585.585 0 0 0 0-.817ZM5.25 20.651 3.208 18.61a.574.574 0 0 0-.816 0 .574.574 0 0 0 0 .817l2.444 2.444a.58.58 0 0 0 .822 0l6.184-6.177a.574.574 0 0 0 0-.817.574.574 0 0 0-.817 0L5.25 20.651Z"/><g xmlns="http://www.w3.org/2000/svg" filter="url(#a)"><circle xmlns="http://www.w3.org/2000/svg" cx="26" cy="18" r="10" fill="#{tokens.$background-basic}"/></g><defs><filter id="a" width="44" height="44" x="4" y="0" color-interpolation-filters="sRGB" filterUnits="userSpaceOnUse"><feFlood flood-opacity="0" result="BackgroundImageFix"/><feColorMatrix in="SourceAlpha" result="hardAlpha" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 127 0"/><feOffset dy="4"/><feGaussianBlur stdDeviation="6"/><feColorMatrix values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.2 0"/><feBlend in2="BackgroundImageFix" result="effect1_dropShadow_1_81"/><feBlend in="SourceGraphic" in2="effect1_dropShadow_1_81" result="shape"/></filter></defs></svg>');
+$input-mark-disabled: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="#{$input-mark-width}" height="#{$input-mark-height}" viewBox="0 0 52 44" fill="none"><circle xmlns="http://www.w3.org/2000/svg" cx="26" cy="18" r="10" fill="#{tokens.$action-unselected-disabled}"/></svg>');
+$input-mark-disabled-checked: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="#{$input-mark-width}" height="#{$input-mark-height}" viewBox="0 0 52 44" fill="none"><circle xmlns="http://www.w3.org/2000/svg" cx="26" cy="18" r="10" fill="#{tokens.$action-selected-disabled}"/></svg>');
+$input-transition-duration: transitions.$duration-100;
+$input-transition-timing: transitions.$timing-eased-in-out;
+$input-border-color-disabled: tokens.$border-primary-disabled;
+$input-focus-shadow: tokens.$focus;