feat(select): implement select

PiperOrigin-RevId: 523532548

select/_filled-select.scss

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+//
+// Copyright 2023 Google LLC
+// SPDX-License-Identifier: Apache-2.0
+//
+
+@forward './lib/filled-select' show theme;

select/_outlined-select.scss

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+//
+// Copyright 2023 Google LLC
+// SPDX-License-Identifier: Apache-2.0
+//
+
+@forward './lib/outlined-select' show theme;

select/filled-select.ts

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+/**
+ * @license
+ * Copyright 2023 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import {customElement} from 'lit/decorators.js';
+
+import {styles as filledForcedColorsStyles} from './lib/filled-forced-colors-styles.css.js';
+import {FilledSelect} from './lib/filled-select.js';
+import {styles} from './lib/filled-select-styles.css.js';
+import {styles as sharedStyles} from './lib/shared-styles.css.js';
+
+declare global {
+  interface HTMLElementTagNameMap {
+    'md-filled-select': MdFilledSelect;
+  }
+}
+
+/**
+ * @summary
+ * Select menus display a list of choices on temporary surfaces and display the
+ * currently selected menu item above the menu.
+ *
+ * @description
+ * The select component allows users to choose a value from a fixed list of
+ * available options. Composed of an interactive anchor button and a menu, it is
+ * analogous to the native HTML `<select>` element. This is the "filled"
+ * variant.
+ *
+ * @example
+ * ```html
+ * <md-filled-select label="fruits">
+ *   <!-- An empty selected option will give select an "un-filled" state -->
+ *   <md-select-option selected></md-select-option>
+ *   <md-select-option value="apple" headline="Apple"></md-select-option>
+ *   <md-select-option value="banana" headline="Banana"></md-select-option>
+ *   <md-select-option value="kiwi" headline="Kiwi"></md-select-option>
+ *   <md-select-option value="orange" headline="Orange"></md-select-option>
+ *   <md-select-option value="tomato" headline="Tomato"></md-select-option>
+ * </md-filled-select>
+ * ```
+ *
+ * @final
+ * @suppress {visibility}
+ */
+@customElement('md-filled-select')
+export class MdFilledSelect extends FilledSelect {
+  static override styles = [sharedStyles, styles, filledForcedColorsStyles];
+}

select/harness.ts

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+/**
+ * @license
+ * Copyright 2023 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import {FieldHarness} from '../field/harness.js';
+import {Field} from '../field/lib/field.js';
+import {Harness} from '../testing/harness.js';
+
+import {Select} from './lib/select.js';
+import {SelectOptionHarness} from './lib/selectoption/harness.js';
+
+/**
+ * Test harness for menu.
+ */
+export class SelectHarness extends Harness<Select> {
+  protected getField() {
+    return this.element.renderRoot.querySelector('.field') as Field;
+  }
+  /**
+   * Shows the menu and returns the first list item element.
+   */
+  protected override async getInteractiveElement() {
+    await this.element.updateComplete;
+    return this.getField();
+  }
+
+  override async startHover() {
+    const field = await this.getField();
+    const element = await (new SelectFieldHardness(field)).getInteractiveElement();
+    this.simulateStartHover(element);
+  }
+
+  /** @return ListItem harnesses for the menu's items. */
+  getItems() {
+    return this.element.options.map((item) => new SelectOptionHarness(item));
+  }
+
+  async click(quick = true) {
+    this.element.quick = quick;
+    await this.element.updateComplete;
+    const field = await this.getField();
+    field.click();
+  }
+
+  async clickOption(index: number) {
+    const menu = this.element.renderRoot.querySelector('md-menu')!;
+    if (!menu.open) {
+      console.warn(
+          'Internal menu is not open. Try calling SelectHarness.prototype.click()');
+    }
+    this.getItems()[index].element.click();
+  }
+}
+
+// Private class (not exported)
+class SelectFieldHardness extends FieldHarness {
+  /* Expose so that we can call it from our internal code in SelectHarness. */
+  override getInteractiveElement() {
+    return super.getInteractiveElement();
+  }
+}

select/lib/_filled-select.scss

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+//
+// Copyright 2023 Google LLC
+// SPDX-License-Identifier: Apache-2.0
+//
+
+// go/keep-sorted start
+@use 'sass:list';
+@use 'sass:map';
+@use 'sass:string';
+// go/keep-sorted end
+// go/keep-sorted start
+@use '../../field/filled-field';
+@use '../../sass/shape';
+@use '../../sass/theme';
+@use '../../tokens';
+// go/keep-sorted end
+
+@mixin theme($tokens) {
+  $tokens: theme.validate-theme(tokens.md-comp-filled-select-values(), $tokens);
+
+  @each $token, $value in $tokens {
+    --md-filled-select-#{$token}: #{$value};
+  }
+}
+
+@mixin styles() {
+  $tokens: tokens.md-comp-filled-select-values();
+
+  :host {
+    @each $token, $value in $tokens {
+      --_#{$token}: #{$value};
+    }
+
+    @include filled-field.theme(
+      (
+        // go/keep-sorted start
+        'active-indicator-color': var(--_text-field-active-indicator-color),
+        'active-indicator-height': var(--_text-field-active-indicator-height),
+        'container-color': var(--_text-field-container-color),
+        'container-shape':
+          shape.corners-to-shape-token('--_text-field-container-shape'),
+        'content-color': var(--_text-field-input-text-color),
+        'content-type': var(--_text-field-input-text-type),
+        'disabled-active-indicator-color':
+          var(--_text-field-disabled-active-indicator-color),
+        'disabled-active-indicator-height':
+          var(--_text-field-disabled-active-indicator-height),
+        'disabled-active-indicator-opacity':
+          var(--_text-field-disabled-active-indicator-opacity),
+        'disabled-container-color': var(--_text-field-disabled-container-color),
+        'disabled-container-opacity':
+          var(--_text-field-disabled-container-opacity),
+        'disabled-content-color': var(--_text-field-disabled-input-text-color),
+        'disabled-content-opacity':
+          var(--_text-field-disabled-input-text-opacity),
+        'disabled-label-text-color':
+          var(--_text-field-disabled-label-text-color),
+        'disabled-label-text-opacity':
+          var(--_text-field-disabled-label-text-opacity),
+        'disabled-leading-content-color':
+          var(--_text-field-disabled-leading-icon-color),
+        'disabled-leading-content-opacity':
+          var(--_text-field-disabled-leading-icon-opacity),
+        'disabled-supporting-text-color':
+          var(--_text-field-disabled-supporting-text-color),
+        'disabled-supporting-text-opacity':
+          var(--_text-field-disabled-supporting-text-opacity),
+        'disabled-trailing-content-color':
+          var(--_text-field-disabled-trailing-icon-color),
+        'disabled-trailing-content-opacity':
+          var(--_text-field-disabled-trailing-icon-opacity),
+        'error-active-indicator-color':
+          var(--_text-field-error-active-indicator-color),
+        'error-content-color': var(--_text-field-error-input-text-color),
+        'error-focus-active-indicator-color':
+          var(--_text-field-error-focus-active-indicator-color),
+        'error-focus-content-color':
+          var(--_text-field-error-focus-input-text-color),
+        'error-focus-label-text-color':
+          var(--_text-field-error-focus-label-text-color),
+        'error-focus-leading-content-color':
+          var(--_text-field-error-focus-leading-icon-color),
+        'error-focus-supporting-text-color':
+          var(--_text-field-error-focus-supporting-text-color),
+        'error-focus-trailing-content-color':
+          var(--_text-field-error-focus-trailing-icon-color),
+        'error-hover-active-indicator-color':
+          var(--_text-field-error-hover-active-indicator-color),
+        'error-hover-content-color':
+          var(--_text-field-error-hover-input-text-color),
+        'error-hover-label-text-color':
+          var(--_text-field-error-hover-label-text-color),
+        'error-hover-leading-content-color':
+          var(--_text-field-error-hover-leading-icon-color),
+        'error-hover-state-layer-color':
+          var(--_text-field-error-hover-state-layer-color),
+        'error-hover-state-layer-opacity':
+          var(--_text-field-error-hover-state-layer-opacity),
+        'error-hover-supporting-text-color':
+          var(--_text-field-error-hover-supporting-text-color),
+        'error-hover-trailing-content-color':
+          var(--_text-field-error-hover-trailing-icon-color),
+        'error-label-text-color': var(--_text-field-error-label-text-color),
+        'error-leading-content-color':
+          var(--_text-field-error-leading-icon-color),
+        'error-supporting-text-color':
+          var(--_text-field-error-supporting-text-color),
+        'error-trailing-content-color':
+          var(--_text-field-error-trailing-icon-color),
+        'focus-active-indicator-color':
+          var(--_text-field-focus-active-indicator-color),
+        'focus-active-indicator-height':
+          var(--_text-field-focus-active-indicator-height),
+        'focus-content-color': var(--_text-field-focus-input-text-color),
+        'focus-label-text-color': var(--_text-field-focus-label-text-color),
+        'focus-leading-content-color':
+          var(--_text-field-focus-leading-icon-color),
+        'focus-supporting-text-color':
+          var(--_text-field-focus-supporting-text-color),
+        'focus-trailing-content-color':
+          var(--_text-field-focus-trailing-icon-color),
+        'hover-active-indicator-color':
+          var(--_text-field-hover-active-indicator-color),
+        'hover-active-indicator-height':
+          var(--_text-field-hover-active-indicator-height),
+        'hover-content-color': var(--_text-field-hover-input-text-color),
+        'hover-label-text-color': var(--_text-field-hover-label-text-color),
+        'hover-leading-content-color':
+          var(--_text-field-hover-leading-icon-color),
+        'hover-state-layer-color': var(--_text-field-hover-state-layer-color),
+        'hover-state-layer-opacity':
+          var(--_text-field-hover-state-layer-opacity),
+        'hover-supporting-text-color':
+          var(--_text-field-hover-supporting-text-color),
+        'hover-trailing-content-color':
+          var(--_text-field-hover-trailing-icon-color),
+        'label-text-color': var(--_text-field-label-text-color),
+        'label-text-populated-line-height':
+          var(--_text-field-label-text-populated-line-height),
+        'label-text-populated-size':
+          var(--_text-field-label-text-populated-size),
+        'label-text-type': var(--_text-field-label-text-type),
+        'leading-content-color': var(--_text-field-leading-icon-color),
+        'supporting-text-color': var(--_text-field-supporting-text-color),
+        'supporting-text-type': var(--_text-field-supporting-text-type),
+        'trailing-content-color': var(--_text-field-trailing-icon-color),
+        // go/keep-sorted end
+      )
+    );
+  }
+
+  [hasstart] .icon.leading {
+    font-size: var(--_text-field-leading-icon-size);
+    height: var(--_text-field-leading-icon-size);
+    width: var(--_text-field-leading-icon-size);
+  }
+
+  [hasend] .icon.trailing {
+    font-size: var(--_text-field-trailing-icon-size);
+    height: var(--_text-field-trailing-icon-size);
+    width: var(--_text-field-trailing-icon-size);
+  }
+}