@angular/cdk
Version:
Angular Material Component Development Kit
224 lines • 39.3 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as keyCodes from '@angular/cdk/keycodes';
import { _getTextWithExcludedElements, TestKey, } from '@angular/cdk/testing';
import { clearElement, createFakeEvent, dispatchFakeEvent, dispatchMouseEvent, dispatchPointerEvent, isTextInput, triggerBlur, triggerFocus, typeInElement, dispatchEvent, } from './fake-events';
/** Maps `TestKey` constants to the `keyCode` and `key` values used by native browser events. */
const keyMap = {
[TestKey.BACKSPACE]: { keyCode: keyCodes.BACKSPACE, key: 'Backspace' },
[TestKey.TAB]: { keyCode: keyCodes.TAB, key: 'Tab' },
[TestKey.ENTER]: { keyCode: keyCodes.ENTER, key: 'Enter' },
[TestKey.SHIFT]: { keyCode: keyCodes.SHIFT, key: 'Shift' },
[TestKey.CONTROL]: { keyCode: keyCodes.CONTROL, key: 'Control' },
[TestKey.ALT]: { keyCode: keyCodes.ALT, key: 'Alt' },
[TestKey.ESCAPE]: { keyCode: keyCodes.ESCAPE, key: 'Escape' },
[TestKey.PAGE_UP]: { keyCode: keyCodes.PAGE_UP, key: 'PageUp' },
[TestKey.PAGE_DOWN]: { keyCode: keyCodes.PAGE_DOWN, key: 'PageDown' },
[TestKey.END]: { keyCode: keyCodes.END, key: 'End' },
[TestKey.HOME]: { keyCode: keyCodes.HOME, key: 'Home' },
[TestKey.LEFT_ARROW]: { keyCode: keyCodes.LEFT_ARROW, key: 'ArrowLeft' },
[TestKey.UP_ARROW]: { keyCode: keyCodes.UP_ARROW, key: 'ArrowUp' },
[TestKey.RIGHT_ARROW]: { keyCode: keyCodes.RIGHT_ARROW, key: 'ArrowRight' },
[TestKey.DOWN_ARROW]: { keyCode: keyCodes.DOWN_ARROW, key: 'ArrowDown' },
[TestKey.INSERT]: { keyCode: keyCodes.INSERT, key: 'Insert' },
[TestKey.DELETE]: { keyCode: keyCodes.DELETE, key: 'Delete' },
[TestKey.F1]: { keyCode: keyCodes.F1, key: 'F1' },
[TestKey.F2]: { keyCode: keyCodes.F2, key: 'F2' },
[TestKey.F3]: { keyCode: keyCodes.F3, key: 'F3' },
[TestKey.F4]: { keyCode: keyCodes.F4, key: 'F4' },
[TestKey.F5]: { keyCode: keyCodes.F5, key: 'F5' },
[TestKey.F6]: { keyCode: keyCodes.F6, key: 'F6' },
[TestKey.F7]: { keyCode: keyCodes.F7, key: 'F7' },
[TestKey.F8]: { keyCode: keyCodes.F8, key: 'F8' },
[TestKey.F9]: { keyCode: keyCodes.F9, key: 'F9' },
[TestKey.F10]: { keyCode: keyCodes.F10, key: 'F10' },
[TestKey.F11]: { keyCode: keyCodes.F11, key: 'F11' },
[TestKey.F12]: { keyCode: keyCodes.F12, key: 'F12' },
[TestKey.META]: { keyCode: keyCodes.META, key: 'Meta' },
};
/** A `TestElement` implementation for unit tests. */
export class UnitTestElement {
constructor(element, _stabilize) {
this.element = element;
this._stabilize = _stabilize;
}
/** Blur the element. */
async blur() {
triggerBlur(this.element);
await this._stabilize();
}
/** Clear the element's input (for input and textarea elements only). */
async clear() {
if (!isTextInput(this.element)) {
throw Error('Attempting to clear an invalid element');
}
clearElement(this.element);
await this._stabilize();
}
async click(...args) {
await this._dispatchMouseEventSequence('click', args, 0);
await this._stabilize();
}
async rightClick(...args) {
await this._dispatchMouseEventSequence('contextmenu', args, 2);
await this._stabilize();
}
/** Focus the element. */
async focus() {
triggerFocus(this.element);
await this._stabilize();
}
/** Get the computed value of the given CSS property for the element. */
async getCssValue(property) {
await this._stabilize();
// TODO(mmalerba): Consider adding value normalization if we run into common cases where its
// needed.
return getComputedStyle(this.element).getPropertyValue(property);
}
/** Hovers the mouse over the element. */
async hover() {
this._dispatchPointerEventIfSupported('pointerenter');
dispatchMouseEvent(this.element, 'mouseenter');
await this._stabilize();
}
/** Moves the mouse away from the element. */
async mouseAway() {
this._dispatchPointerEventIfSupported('pointerleave');
dispatchMouseEvent(this.element, 'mouseleave');
await this._stabilize();
}
async sendKeys(...modifiersAndKeys) {
const args = modifiersAndKeys.map(k => (typeof k === 'number' ? keyMap[k] : k));
typeInElement(this.element, ...args);
await this._stabilize();
}
/**
* Gets the text from the element.
* @param options Options that affect what text is included.
*/
async text(options) {
await this._stabilize();
if (options?.exclude) {
return _getTextWithExcludedElements(this.element, options.exclude);
}
return (this.element.textContent || '').trim();
}
/** Gets the value for the given attribute from the element. */
async getAttribute(name) {
await this._stabilize();
return this.element.getAttribute(name);
}
/** Checks whether the element has the given class. */
async hasClass(name) {
await this._stabilize();
return this.element.classList.contains(name);
}
/** Gets the dimensions of the element. */
async getDimensions() {
await this._stabilize();
return this.element.getBoundingClientRect();
}
/** Gets the value of a property of an element. */
async getProperty(name) {
await this._stabilize();
return this.element[name];
}
/** Sets the value of a property of an input. */
async setInputValue(value) {
this.element.value = value;
await this._stabilize();
}
/** Selects the options at the specified indexes inside of a native `select` element. */
async selectOptions(...optionIndexes) {
let hasChanged = false;
const options = this.element.querySelectorAll('option');
const indexes = new Set(optionIndexes); // Convert to a set to remove duplicates.
for (let i = 0; i < options.length; i++) {
const option = options[i];
const wasSelected = option.selected;
// We have to go through `option.selected`, because `HTMLSelectElement.value` doesn't
// allow for multiple options to be selected, even in `multiple` mode.
option.selected = indexes.has(i);
if (option.selected !== wasSelected) {
hasChanged = true;
dispatchFakeEvent(this.element, 'change');
}
}
if (hasChanged) {
await this._stabilize();
}
}
/** Checks whether this element matches the given selector. */
async matchesSelector(selector) {
await this._stabilize();
const elementPrototype = Element.prototype;
return (elementPrototype['matches'] || elementPrototype['msMatchesSelector']).call(this.element, selector);
}
/** Checks whether the element is focused. */
async isFocused() {
await this._stabilize();
return document.activeElement === this.element;
}
/**
* Dispatches an event with a particular name.
* @param name Name of the event to be dispatched.
*/
async dispatchEvent(name, data) {
const event = createFakeEvent(name);
if (data) {
// tslint:disable-next-line:ban Have to use `Object.assign` to preserve the original object.
Object.assign(event, data);
}
dispatchEvent(this.element, event);
await this._stabilize();
}
/**
* Dispatches a pointer event on the current element if the browser supports it.
* @param name Name of the pointer event to be dispatched.
* @param clientX Coordinate of the user's pointer along the X axis.
* @param clientY Coordinate of the user's pointer along the Y axis.
* @param button Mouse button that should be pressed when dispatching the event.
*/
_dispatchPointerEventIfSupported(name, clientX, clientY, button) {
// The latest versions of all browsers we support have the new `PointerEvent` API.
// Though since we capture the two most recent versions of these browsers, we also
// need to support Safari 12 at time of writing. Safari 12 does not have support for this,
// so we need to conditionally create and dispatch these events based on feature detection.
if (typeof PointerEvent !== 'undefined' && PointerEvent) {
dispatchPointerEvent(this.element, name, clientX, clientY, { isPrimary: true, button });
}
}
/** Dispatches all the events that are part of a mouse event sequence. */
async _dispatchMouseEventSequence(name, args, button) {
let clientX = undefined;
let clientY = undefined;
let modifiers = {};
if (args.length && typeof args[args.length - 1] === 'object') {
modifiers = args.pop();
}
if (args.length) {
const { left, top, width, height } = await this.getDimensions();
const relativeX = args[0] === 'center' ? width / 2 : args[0];
const relativeY = args[0] === 'center' ? height / 2 : args[1];
// Round the computed click position as decimal pixels are not
// supported by mouse events and could lead to unexpected results.
clientX = Math.round(left + relativeX);
clientY = Math.round(top + relativeY);
}
this._dispatchPointerEventIfSupported('pointerdown', clientX, clientY, button);
dispatchMouseEvent(this.element, 'mousedown', clientX, clientY, button, modifiers);
this._dispatchPointerEventIfSupported('pointerup', clientX, clientY, button);
dispatchMouseEvent(this.element, 'mouseup', clientX, clientY, button, modifiers);
dispatchMouseEvent(this.element, name, clientX, clientY, button, modifiers);
// This call to _stabilize should not be needed since the callers will already do that them-
// selves. Nevertheless it breaks some tests in g3 without it. It needs to be investigated
// why removing breaks those tests.
await this._stabilize();
}
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport * as keyCodes from '@angular/cdk/keycodes';\nimport {\n  _getTextWithExcludedElements,\n  ElementDimensions,\n  ModifierKeys,\n  TestElement,\n  TestKey,\n  TextOptions,\n  EventData,\n} from '@angular/cdk/testing';\nimport {\n  clearElement,\n  createFakeEvent,\n  dispatchFakeEvent,\n  dispatchMouseEvent,\n  dispatchPointerEvent,\n  isTextInput,\n  triggerBlur,\n  triggerFocus,\n  typeInElement,\n  dispatchEvent,\n} from './fake-events';\n\n/** Maps `TestKey` constants to the `keyCode` and `key` values used by native browser events. */\nconst keyMap = {\n  [TestKey.BACKSPACE]: {keyCode: keyCodes.BACKSPACE, key: 'Backspace'},\n  [TestKey.TAB]: {keyCode: keyCodes.TAB, key: 'Tab'},\n  [TestKey.ENTER]: {keyCode: keyCodes.ENTER, key: 'Enter'},\n  [TestKey.SHIFT]: {keyCode: keyCodes.SHIFT, key: 'Shift'},\n  [TestKey.CONTROL]: {keyCode: keyCodes.CONTROL, key: 'Control'},\n  [TestKey.ALT]: {keyCode: keyCodes.ALT, key: 'Alt'},\n  [TestKey.ESCAPE]: {keyCode: keyCodes.ESCAPE, key: 'Escape'},\n  [TestKey.PAGE_UP]: {keyCode: keyCodes.PAGE_UP, key: 'PageUp'},\n  [TestKey.PAGE_DOWN]: {keyCode: keyCodes.PAGE_DOWN, key: 'PageDown'},\n  [TestKey.END]: {keyCode: keyCodes.END, key: 'End'},\n  [TestKey.HOME]: {keyCode: keyCodes.HOME, key: 'Home'},\n  [TestKey.LEFT_ARROW]: {keyCode: keyCodes.LEFT_ARROW, key: 'ArrowLeft'},\n  [TestKey.UP_ARROW]: {keyCode: keyCodes.UP_ARROW, key: 'ArrowUp'},\n  [TestKey.RIGHT_ARROW]: {keyCode: keyCodes.RIGHT_ARROW, key: 'ArrowRight'},\n  [TestKey.DOWN_ARROW]: {keyCode: keyCodes.DOWN_ARROW, key: 'ArrowDown'},\n  [TestKey.INSERT]: {keyCode: keyCodes.INSERT, key: 'Insert'},\n  [TestKey.DELETE]: {keyCode: keyCodes.DELETE, key: 'Delete'},\n  [TestKey.F1]: {keyCode: keyCodes.F1, key: 'F1'},\n  [TestKey.F2]: {keyCode: keyCodes.F2, key: 'F2'},\n  [TestKey.F3]: {keyCode: keyCodes.F3, key: 'F3'},\n  [TestKey.F4]: {keyCode: keyCodes.F4, key: 'F4'},\n  [TestKey.F5]: {keyCode: keyCodes.F5, key: 'F5'},\n  [TestKey.F6]: {keyCode: keyCodes.F6, key: 'F6'},\n  [TestKey.F7]: {keyCode: keyCodes.F7, key: 'F7'},\n  [TestKey.F8]: {keyCode: keyCodes.F8, key: 'F8'},\n  [TestKey.F9]: {keyCode: keyCodes.F9, key: 'F9'},\n  [TestKey.F10]: {keyCode: keyCodes.F10, key: 'F10'},\n  [TestKey.F11]: {keyCode: keyCodes.F11, key: 'F11'},\n  [TestKey.F12]: {keyCode: keyCodes.F12, key: 'F12'},\n  [TestKey.META]: {keyCode: keyCodes.META, key: 'Meta'},\n};\n\n/** A `TestElement` implementation for unit tests. */\nexport class UnitTestElement implements TestElement {\n  constructor(readonly element: Element, private _stabilize: () => Promise<void>) {}\n\n  /** Blur the element. */\n  async blur(): Promise<void> {\n    triggerBlur(this.element as HTMLElement);\n    await this._stabilize();\n  }\n\n  /** Clear the element's input (for input and textarea elements only). */\n  async clear(): Promise<void> {\n    if (!isTextInput(this.element)) {\n      throw Error('Attempting to clear an invalid element');\n    }\n    clearElement(this.element);\n    await this._stabilize();\n  }\n\n  /**\n   * Click the element at the default location for the current environment. If you need to guarantee\n   * the element is clicked at a specific location, consider using `click('center')` or\n   * `click(x, y)` instead.\n   */\n  click(modifiers?: ModifierKeys): Promise<void>;\n  /** Click the element at the element's center. */\n  click(location: 'center', modifiers?: ModifierKeys): Promise<void>;\n  /**\n   * Click the element at the specified coordinates relative to the top-left of the element.\n   * @param relativeX Coordinate within the element, along the X-axis at which to click.\n   * @param relativeY Coordinate within the element, along the Y-axis at which to click.\n   * @param modifiers Modifier keys held while clicking\n   */\n  click(relativeX: number, relativeY: number, modifiers?: ModifierKeys): Promise<void>;\n  async click(\n    ...args: [ModifierKeys?] | ['center', ModifierKeys?] | [number, number, ModifierKeys?]\n  ): Promise<void> {\n    await this._dispatchMouseEventSequence('click', args, 0);\n    await this._stabilize();\n  }\n\n  /**\n   * Right clicks on the element at the specified coordinates relative to the top-left of it.\n   * @param relativeX Coordinate within the element, along the X-axis at which to click.\n   * @param relativeY Coordinate within the element, along the Y-axis at which to click.\n   * @param modifiers Modifier keys held while clicking\n   */\n  rightClick(relativeX: number, relativeY: number, modifiers?: ModifierKeys): Promise<void>;\n  async rightClick(\n    ...args: [ModifierKeys?] | ['center', ModifierKeys?] | [number, number, ModifierKeys?]\n  ): Promise<void> {\n    await this._dispatchMouseEventSequence('contextmenu', args, 2);\n    await this._stabilize();\n  }\n\n  /** Focus the element. */\n  async focus(): Promise<void> {\n    triggerFocus(this.element as HTMLElement);\n    await this._stabilize();\n  }\n\n  /** Get the computed value of the given CSS property for the element. */\n  async getCssValue(property: string): Promise<string> {\n    await this._stabilize();\n    // TODO(mmalerba): Consider adding value normalization if we run into common cases where its\n    //  needed.\n    return getComputedStyle(this.element).getPropertyValue(property);\n  }\n\n  /** Hovers the mouse over the element. */\n  async hover(): Promise<void> {\n    this._dispatchPointerEventIfSupported('pointerenter');\n    dispatchMouseEvent(this.element, 'mouseenter');\n    await this._stabilize();\n  }\n\n  /** Moves the mouse away from the element. */\n  async mouseAway(): Promise<void> {\n    this._dispatchPointerEventIfSupported('pointerleave');\n    dispatchMouseEvent(this.element, 'mouseleave');\n    await this._stabilize();\n  }\n\n  /**\n   * Sends the given string to the input as a series of key presses. Also fires input events\n   * and attempts to add the string to the Element's value. Note that this cannot\n   * reproduce native browser behavior for keyboard shortcuts such as Tab, Ctrl + A, etc.\n   */\n  async sendKeys(...keys: (string | TestKey)[]): Promise<void>;\n  /**\n   * Sends the given string to the input as a series of key presses. Also fires input events\n   * and attempts to add the string to the Element's value.\n   */\n  async sendKeys(modifiers: ModifierKeys, ...keys: (string | TestKey)[]): Promise<void>;\n  async sendKeys(...modifiersAndKeys: any[]): Promise<void> {\n    const args = modifiersAndKeys.map(k => (typeof k === 'number' ? keyMap[k as TestKey] : k));\n    typeInElement(this.element as HTMLElement, ...args);\n    await this._stabilize();\n  }\n\n  /**\n   * Gets the text from the element.\n   * @param options Options that affect what text is included.\n   */\n  async text(options?: TextOptions): Promise<string> {\n    await this._stabilize();\n    if (options?.exclude) {\n      return _getTextWithExcludedElements(this.element, options.exclude);\n    }\n    return (this.element.textContent || '').trim();\n  }\n\n  /** Gets the value for the given attribute from the element. */\n  async getAttribute(name: string): Promise<string | null> {\n    await this._stabilize();\n    return this.element.getAttribute(name);\n  }\n\n  /** Checks whether the element has the given class. */\n  async hasClass(name: string): Promise<boolean> {\n    await this._stabilize();\n    return this.element.classList.contains(name);\n  }\n\n  /** Gets the dimensions of the element. */\n  async getDimensions(): Promise<ElementDimensions> {\n    await this._stabilize();\n    return this.element.getBoundingClientRect();\n  }\n\n  /** Gets the value of a property of an element. */\n  async getProperty<T = any>(name: string): Promise<T> {\n    await this._stabilize();\n    return (this.element as any)[name];\n  }\n\n  /** Sets the value of a property of an input. */\n  async setInputValue(value: string): Promise<void> {\n    (this.element as any).value = value;\n    await this._stabilize();\n  }\n\n  /** Selects the options at the specified indexes inside of a native `select` element. */\n  async selectOptions(...optionIndexes: number[]): Promise<void> {\n    let hasChanged = false;\n    const options = this.element.querySelectorAll('option');\n    const indexes = new Set(optionIndexes); // Convert to a set to remove duplicates.\n\n    for (let i = 0; i < options.length; i++) {\n      const option = options[i];\n      const wasSelected = option.selected;\n\n      // We have to go through `option.selected`, because `HTMLSelectElement.value` doesn't\n      // allow for multiple options to be selected, even in `multiple` mode.\n      option.selected = indexes.has(i);\n\n      if (option.selected !== wasSelected) {\n        hasChanged = true;\n        dispatchFakeEvent(this.element, 'change');\n      }\n    }\n\n    if (hasChanged) {\n      await this._stabilize();\n    }\n  }\n\n  /** Checks whether this element matches the given selector. */\n  async matchesSelector(selector: string): Promise<boolean> {\n    await this._stabilize();\n    const elementPrototype = Element.prototype as any;\n    return (elementPrototype['matches'] || elementPrototype['msMatchesSelector']).call(\n      this.element,\n      selector,\n    );\n  }\n\n  /** Checks whether the element is focused. */\n  async isFocused(): Promise<boolean> {\n    await this._stabilize();\n    return document.activeElement === this.element;\n  }\n\n  /**\n   * Dispatches an event with a particular name.\n   * @param name Name of the event to be dispatched.\n   */\n  async dispatchEvent(name: string, data?: Record<string, EventData>): Promise<void> {\n    const event = createFakeEvent(name);\n\n    if (data) {\n      // tslint:disable-next-line:ban Have to use `Object.assign` to preserve the original object.\n      Object.assign(event, data);\n    }\n\n    dispatchEvent(this.element, event);\n    await this._stabilize();\n  }\n\n  /**\n   * Dispatches a pointer event on the current element if the browser supports it.\n   * @param name Name of the pointer event to be dispatched.\n   * @param clientX Coordinate of the user's pointer along the X axis.\n   * @param clientY Coordinate of the user's pointer along the Y axis.\n   * @param button Mouse button that should be pressed when dispatching the event.\n   */\n  private _dispatchPointerEventIfSupported(\n    name: string,\n    clientX?: number,\n    clientY?: number,\n    button?: number,\n  ) {\n    // The latest versions of all browsers we support have the new `PointerEvent` API.\n    // Though since we capture the two most recent versions of these browsers, we also\n    // need to support Safari 12 at time of writing. Safari 12 does not have support for this,\n    // so we need to conditionally create and dispatch these events based on feature detection.\n    if (typeof PointerEvent !== 'undefined' && PointerEvent) {\n      dispatchPointerEvent(this.element, name, clientX, clientY, {isPrimary: true, button});\n    }\n  }\n\n  /** Dispatches all the events that are part of a mouse event sequence. */\n  private async _dispatchMouseEventSequence(\n    name: string,\n    args: [ModifierKeys?] | ['center', ModifierKeys?] | [number, number, ModifierKeys?],\n    button?: number,\n  ) {\n    let clientX: number | undefined = undefined;\n    let clientY: number | undefined = undefined;\n    let modifiers: ModifierKeys = {};\n\n    if (args.length && typeof args[args.length - 1] === 'object') {\n      modifiers = args.pop() as ModifierKeys;\n    }\n\n    if (args.length) {\n      const {left, top, width, height} = await this.getDimensions();\n      const relativeX = args[0] === 'center' ? width / 2 : (args[0] as number);\n      const relativeY = args[0] === 'center' ? height / 2 : (args[1] as number);\n\n      // Round the computed click position as decimal pixels are not\n      // supported by mouse events and could lead to unexpected results.\n      clientX = Math.round(left + relativeX);\n      clientY = Math.round(top + relativeY);\n    }\n\n    this._dispatchPointerEventIfSupported('pointerdown', clientX, clientY, button);\n    dispatchMouseEvent(this.element, 'mousedown', clientX, clientY, button, modifiers);\n    this._dispatchPointerEventIfSupported('pointerup', clientX, clientY, button);\n    dispatchMouseEvent(this.element, 'mouseup', clientX, clientY, button, modifiers);\n    dispatchMouseEvent(this.element, name, clientX, clientY, button, modifiers);\n\n    // This call to _stabilize should not be needed since the callers will already do that them-\n    // selves. Nevertheless it breaks some tests in g3 without it. It needs to be investigated\n    // why removing breaks those tests.\n    await this._stabilize();\n  }\n}\n"]}