@angular/cdk
Version:
Angular Material Component Development Kit
102 lines • 15.8 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, x = 0, y = 0, button = 0) {
const event = document.createEvent('MouseEvent');
const originalPreventDefault = event.preventDefault.bind(event);
event.initMouseEvent(type, true, /* canBubble */ true, /* cancelable */ window, /* view */ 0, /* detail */ x, /* screenX */ y, /* screenY */ x, /* clientX */ y, /* clientY */ false, /* ctrlKey */ false, /* altKey */ false, /* shiftKey */ false, /* metaKey */ button, /* button */ null /* relatedTarget */);
// `initMouseEvent` doesn't allow us to pass the `buttons` and
// defaults it to 0 which looks like a fake event.
Object.defineProperty(event, 'buttons', { get: () => 1 });
// IE won't set `defaultPrevented` on synthetic events so we need to do it manually.
event.preventDefault = function () {
Object.defineProperty(event, 'defaultPrevented', { get: () => true });
return originalPreventDefault();
};
return event;
}
/**
* 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.
Object.defineProperties(event, {
touches: { value: [touchDetails] },
targetTouches: { value: [touchDetails] },
changedTouches: { value: [touchDetails] }
});
return event;
}
/**
* Dispatches a keydown event from an element.
* @docs-private
*/
export function createKeyboardEvent(type, keyCode = 0, key = '', target, modifiers = {}) {
const event = document.createEvent('KeyboardEvent');
const originalPreventDefault = event.preventDefault;
// Firefox does not support `initKeyboardEvent`, but supports `initKeyEvent`.
if (event.initKeyEvent) {
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 ';
}
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
Object.defineProperties(event, {
keyCode: { get: () => keyCode },
key: { get: () => key },
target: { get: () => target },
ctrlKey: { get: () => !!modifiers.control },
altKey: { get: () => !!modifiers.alt },
shiftKey: { get: () => !!modifiers.shift },
metaKey: { get: () => !!modifiers.meta }
});
// IE won't set `defaultPrevented` on synthetic events so we need to do it manually.
event.preventDefault = function () {
Object.defineProperty(event, 'defaultPrevented', { get: () => true });
return originalPreventDefault.apply(this, arguments);
};
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;
}
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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(type: string, x = 0, y = 0, button = 0) {\n  const event = document.createEvent('MouseEvent');\n  const originalPreventDefault = event.preventDefault.bind(event);\n\n  event.initMouseEvent(type,\n    true, /* canBubble */\n    true, /* cancelable */\n    window, /* view */\n    0, /* detail */\n    x, /* screenX */\n    y, /* screenY */\n    x, /* clientX */\n    y, /* clientY */\n    false, /* ctrlKey */\n    false, /* altKey */\n    false, /* shiftKey */\n    false, /* metaKey */\n    button, /* button */\n    null /* relatedTarget */);\n\n  // `initMouseEvent` doesn't allow us to pass the `buttons` and\n  // defaults it to 0 which looks like a fake event.\n  Object.defineProperty(event, 'buttons', {get: () => 1});\n\n  // IE won't set `defaultPrevented` on synthetic events so we need to do it manually.\n  event.preventDefault = function() {\n    Object.defineProperty(event, 'defaultPrevented', { get: () => true });\n    return originalPreventDefault();\n  };\n\n  return event;\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  Object.defineProperties(event, {\n    touches: {value: [touchDetails]},\n    targetTouches: {value: [touchDetails]},\n    changedTouches: {value: [touchDetails]}\n  });\n\n  return event;\n}\n\n/**\n * Dispatches a keydown event from an element.\n * @docs-private\n */\nexport function createKeyboardEvent(type: string, keyCode: number = 0, key: string = '',\n                                    target?: Element, modifiers: ModifierKeys = {}) {\n  const event = document.createEvent('KeyboardEvent') as any;\n  const originalPreventDefault = event.preventDefault;\n\n  // Firefox does not support `initKeyboardEvent`, but supports `initKeyEvent`.\n  if (event.initKeyEvent) {\n    event.initKeyEvent(type, true, true, window, modifiers.control, modifiers.alt, modifiers.shift,\n        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    event.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  Object.defineProperties(event, {\n    keyCode: { get: () => keyCode },\n    key: { get: () => key },\n    target: { get: () => target },\n    ctrlKey: { get: () => !!modifiers.control },\n    altKey: { get: () => !!modifiers.alt },\n    shiftKey: { get: () => !!modifiers.shift },\n    metaKey: { get: () => !!modifiers.meta }\n  });\n\n  // IE won't set `defaultPrevented` on synthetic events so we need to do it manually.\n  event.preventDefault = function() {\n    Object.defineProperty(event, 'defaultPrevented', { get: () => true });\n    return originalPreventDefault.apply(this, arguments);\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"]}