@angular/cdk
Version:
Angular Material Component Development Kit
142 lines • 21.1 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
*/
/**
* Creates a browser MouseEvent with the specified options.
* @docs-private
*/
export function createMouseEvent(type, clientX = 0, clientY = 0, button = 0, modifiers = {}) {
const event = document.createEvent('MouseEvent');
const originalPreventDefault = event.preventDefault.bind(event);
// Note: We cannot determine the position of the mouse event based on the screen
// because the dimensions and position of the browser window are not available
// To provide reasonable `screenX` and `screenY` coordinates, we simply use the
// client coordinates as if the browser is opened in fullscreen.
const screenX = clientX;
const screenY = clientY;
event.initMouseEvent(type,
/* canBubble */ true,
/* cancelable */ true,
/* view */ window,
/* detail */ 0,
/* screenX */ screenX,
/* screenY */ screenY,
/* clientX */ clientX,
/* clientY */ clientY,
/* ctrlKey */ !!modifiers.control,
/* altKey */ !!modifiers.alt,
/* shiftKey */ !!modifiers.shift,
/* metaKey */ !!modifiers.meta,
/* button */ button,
/* relatedTarget */ null);
// `initMouseEvent` doesn't allow us to pass the `buttons` and
// defaults it to 0 which looks like a fake event.
defineReadonlyEventProperty(event, 'buttons', 1);
// IE won't set `defaultPrevented` on synthetic events so we need to do it manually.
event.preventDefault = function () {
defineReadonlyEventProperty(event, 'defaultPrevented', true);
return originalPreventDefault();
};
return event;
}
/**
* Creates a browser `PointerEvent` with the specified options. Pointer events
* by default will appear as if they are the primary pointer of their type.
* https://www.w3.org/TR/pointerevents2/#dom-pointerevent-isprimary.
*
* For example, if pointer events for a multi-touch interaction are created, the non-primary
* pointer touches would need to be represented by non-primary pointer events.
*
* @docs-private
*/
export function createPointerEvent(type, clientX = 0, clientY = 0, options = { isPrimary: true }) {
return new PointerEvent(type, Object.assign({ bubbles: true, cancelable: true, view: window, clientX,
clientY }, options));
}
/**
* Creates a browser TouchEvent with the specified pointer coordinates.
* @docs-private
*/
export function createTouchEvent(type, pageX = 0, pageY = 0) {
// In favor of creating events that work for most of the browsers, the event is created
// as a basic UI Event. The necessary details for the event will be set manually.
const event = document.createEvent('UIEvent');
const touchDetails = { pageX, pageY };
// TS3.6 removes the initUIEvent method and suggests porting to "new UIEvent()".
event.initUIEvent(type, true, true, window, 0);
// Most of the browsers don't have a "initTouchEvent" method that can be used to define
// the touch details.
defineReadonlyEventProperty(event, 'touches', [touchDetails]);
defineReadonlyEventProperty(event, 'targetTouches', [touchDetails]);
defineReadonlyEventProperty(event, 'changedTouches', [touchDetails]);
return event;
}
/**
* Creates a keyboard event with the specified key and modifiers.
* @docs-private
*/
export function createKeyboardEvent(type, keyCode = 0, key = '', modifiers = {}) {
const event = document.createEvent('KeyboardEvent');
const originalPreventDefault = event.preventDefault.bind(event);
// Firefox does not support `initKeyboardEvent`, but supports `initKeyEvent`.
// https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/initKeyEvent.
if (event.initKeyEvent !== undefined) {
event.initKeyEvent(type, true, true, window, modifiers.control, modifiers.alt, modifiers.shift, modifiers.meta, keyCode);
}
else {
// `initKeyboardEvent` expects to receive modifiers as a whitespace-delimited string
// See https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/initKeyboardEvent
let modifiersList = '';
if (modifiers.control) {
modifiersList += 'Control ';
}
if (modifiers.alt) {
modifiersList += 'Alt ';
}
if (modifiers.shift) {
modifiersList += 'Shift ';
}
if (modifiers.meta) {
modifiersList += 'Meta ';
}
// TS3.6 removed the `initKeyboardEvent` method and suggested porting to
// `new KeyboardEvent()` constructor. We cannot use that as we support IE11.
// https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/initKeyboardEvent.
event.initKeyboardEvent(type, true, /* canBubble */ true, /* cancelable */ window, /* view */ 0, /* char */ key, /* key */ 0, /* location */ modifiersList.trim(), /* modifiersList */ false /* repeat */);
}
// Webkit Browsers don't set the keyCode when calling the init function.
// See related bug https://bugs.webkit.org/show_bug.cgi?id=16735
defineReadonlyEventProperty(event, 'keyCode', keyCode);
defineReadonlyEventProperty(event, 'key', key);
defineReadonlyEventProperty(event, 'ctrlKey', !!modifiers.control);
defineReadonlyEventProperty(event, 'altKey', !!modifiers.alt);
defineReadonlyEventProperty(event, 'shiftKey', !!modifiers.shift);
defineReadonlyEventProperty(event, 'metaKey', !!modifiers.meta);
// IE won't set `defaultPrevented` on synthetic events so we need to do it manually.
event.preventDefault = function () {
defineReadonlyEventProperty(event, 'defaultPrevented', true);
return originalPreventDefault();
};
return event;
}
/**
* Creates a fake event object with any desired event type.
* @docs-private
*/
export function createFakeEvent(type, canBubble = false, cancelable = true) {
const event = document.createEvent('Event');
event.initEvent(type, canBubble, cancelable);
return event;
}
/**
* Defines a readonly property on the given event object. Readonly properties on an event object
* are always set as configurable as that matches default readonly properties for DOM event objects.
*/
function defineReadonlyEventProperty(event, propertyName, value) {
Object.defineProperty(event, propertyName, { get: () => value, configurable: true });
}
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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 {ModifierKeys} from '@angular/cdk/testing';\n\n/**\n * Creates a browser MouseEvent with the specified options.\n * @docs-private\n */\nexport function createMouseEvent(\n  type: string, clientX = 0, clientY = 0, button = 0, modifiers: ModifierKeys = {}) {\n  const event = document.createEvent('MouseEvent');\n  const originalPreventDefault = event.preventDefault.bind(event);\n\n  // Note: We cannot determine the position of the mouse event based on the screen\n  // because the dimensions and position of the browser window are not available\n  // To provide reasonable `screenX` and `screenY` coordinates, we simply use the\n  // client coordinates as if the browser is opened in fullscreen.\n  const screenX = clientX;\n  const screenY = clientY;\n\n  event.initMouseEvent(type,\n    /* canBubble */ true,\n    /* cancelable */ true,\n    /* view */ window,\n    /* detail */ 0,\n    /* screenX */ screenX,\n    /* screenY */ screenY,\n    /* clientX */ clientX,\n    /* clientY */ clientY,\n    /* ctrlKey */ !!modifiers.control,\n    /* altKey */ !!modifiers.alt,\n    /* shiftKey */ !!modifiers.shift,\n    /* metaKey */ !!modifiers.meta,\n    /* button */ button,\n    /* relatedTarget */ null);\n\n  // `initMouseEvent` doesn't allow us to pass the `buttons` and\n  // defaults it to 0 which looks like a fake event.\n  defineReadonlyEventProperty(event, 'buttons', 1);\n\n  // IE won't set `defaultPrevented` on synthetic events so we need to do it manually.\n  event.preventDefault = function() {\n    defineReadonlyEventProperty(event, 'defaultPrevented', true);\n    return originalPreventDefault();\n  };\n\n  return event;\n}\n\n/**\n * Creates a browser `PointerEvent` with the specified options. Pointer events\n * by default will appear as if they are the primary pointer of their type.\n * https://www.w3.org/TR/pointerevents2/#dom-pointerevent-isprimary.\n *\n * For example, if pointer events for a multi-touch interaction are created, the non-primary\n * pointer touches would need to be represented by non-primary pointer events.\n *\n * @docs-private\n */\nexport function createPointerEvent(type: string, clientX = 0, clientY = 0,\n                                   options: PointerEventInit = {isPrimary: true}) {\n  return new PointerEvent(type, {\n    bubbles: true,\n    cancelable: true,\n    view: window,\n    clientX,\n    clientY,\n    ...options,\n  });\n}\n\n/**\n * Creates a browser TouchEvent with the specified pointer coordinates.\n * @docs-private\n */\nexport function createTouchEvent(type: string, pageX = 0, pageY = 0) {\n  // In favor of creating events that work for most of the browsers, the event is created\n  // as a basic UI Event. The necessary details for the event will be set manually.\n  const event = document.createEvent('UIEvent');\n  const touchDetails = {pageX, pageY};\n\n  // TS3.6 removes the initUIEvent method and suggests porting to \"new UIEvent()\".\n  (event as any).initUIEvent(type, true, true, window, 0);\n\n  // Most of the browsers don't have a \"initTouchEvent\" method that can be used to define\n  // the touch details.\n  defineReadonlyEventProperty(event, 'touches', [touchDetails]);\n  defineReadonlyEventProperty(event, 'targetTouches', [touchDetails]);\n  defineReadonlyEventProperty(event, 'changedTouches', [touchDetails]);\n\n  return event;\n}\n\n/**\n * Creates a keyboard event with the specified key and modifiers.\n * @docs-private\n */\nexport function createKeyboardEvent(type: string, keyCode: number = 0, key: string = '',\n                                    modifiers: ModifierKeys = {}) {\n  const event = document.createEvent('KeyboardEvent');\n  const originalPreventDefault = event.preventDefault.bind(event);\n\n  // Firefox does not support `initKeyboardEvent`, but supports `initKeyEvent`.\n  // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/initKeyEvent.\n  if ((event as any).initKeyEvent !== undefined) {\n    (event as any).initKeyEvent(type, true, true, window, modifiers.control, modifiers.alt,\n        modifiers.shift, modifiers.meta, keyCode);\n  } else {\n    // `initKeyboardEvent` expects to receive modifiers as a whitespace-delimited string\n    // See https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/initKeyboardEvent\n    let modifiersList = '';\n\n    if (modifiers.control) {\n      modifiersList += 'Control ';\n    }\n\n    if (modifiers.alt) {\n      modifiersList += 'Alt ';\n    }\n\n    if (modifiers.shift) {\n      modifiersList += 'Shift ';\n    }\n\n    if (modifiers.meta) {\n      modifiersList += 'Meta ';\n    }\n\n    // TS3.6 removed the `initKeyboardEvent` method and suggested porting to\n    // `new KeyboardEvent()` constructor. We cannot use that as we support IE11.\n    // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/initKeyboardEvent.\n    (event as any).initKeyboardEvent(type,\n        true, /* canBubble */\n        true, /* cancelable */\n        window, /* view */\n        0, /* char */\n        key, /* key */\n        0, /* location */\n        modifiersList.trim(), /* modifiersList */\n        false /* repeat */);\n  }\n\n  // Webkit Browsers don't set the keyCode when calling the init function.\n  // See related bug https://bugs.webkit.org/show_bug.cgi?id=16735\n  defineReadonlyEventProperty(event, 'keyCode', keyCode);\n  defineReadonlyEventProperty(event, 'key', key);\n  defineReadonlyEventProperty(event, 'ctrlKey', !!modifiers.control);\n  defineReadonlyEventProperty(event, 'altKey', !!modifiers.alt);\n  defineReadonlyEventProperty(event, 'shiftKey', !!modifiers.shift);\n  defineReadonlyEventProperty(event, 'metaKey', !!modifiers.meta);\n\n  // IE won't set `defaultPrevented` on synthetic events so we need to do it manually.\n  event.preventDefault = function() {\n    defineReadonlyEventProperty(event, 'defaultPrevented', true);\n    return originalPreventDefault();\n  };\n\n  return event;\n}\n\n/**\n * Creates a fake event object with any desired event type.\n * @docs-private\n */\nexport function createFakeEvent(type: string, canBubble = false, cancelable = true) {\n  const event = document.createEvent('Event');\n  event.initEvent(type, canBubble, cancelable);\n  return event;\n}\n\n/**\n * Defines a readonly property on the given event object. Readonly properties on an event object\n * are always set as configurable as that matches default readonly properties for DOM event objects.\n */\nfunction defineReadonlyEventProperty(event: Event, propertyName: string, value: any) {\n  Object.defineProperty(event, propertyName, {get: () => value, configurable: true});\n}\n"]}