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@angular/cdk

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Angular Material Component Development Kit

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/** * @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 { DOCUMENT } from '@angular/common'; import { Inject, Injectable, NgZone, Optional } from '@angular/core'; import { Platform, _getEventTarget } from '@angular/cdk/platform'; import { BaseOverlayDispatcher } from './base-overlay-dispatcher'; import * as i0 from "@angular/core"; import * as i1 from "@angular/cdk/platform"; /** * Service for dispatching mouse click events that land on the body to appropriate overlay ref, * if any. It maintains a list of attached overlays to determine best suited overlay based * on event target and order of overlay opens. */ class OverlayOutsideClickDispatcher extends BaseOverlayDispatcher { constructor(document, _platform, /** @breaking-change 14.0.0 _ngZone will be required. */ _ngZone) { super(document); this._platform = _platform; this._ngZone = _ngZone; this._cursorStyleIsSet = false; /** Store pointerdown event target to track origin of click. */ this._pointerDownListener = (event) => { this._pointerDownEventTarget = _getEventTarget(event); }; /** Click event listener that will be attached to the body propagate phase. */ this._clickListener = (event) => { const target = _getEventTarget(event); // In case of a click event, we want to check the origin of the click // (e.g. in case where a user starts a click inside the overlay and // releases the click outside of it). // This is done by using the event target of the preceding pointerdown event. // Every click event caused by a pointer device has a preceding pointerdown // event, unless the click was programmatically triggered (e.g. in a unit test). const origin = event.type === 'click' && this._pointerDownEventTarget ? this._pointerDownEventTarget : target; // Reset the stored pointerdown event target, to avoid having it interfere // in subsequent events. this._pointerDownEventTarget = null; // We copy the array because the original may be modified asynchronously if the // outsidePointerEvents listener decides to detach overlays resulting in index errors inside // the for loop. const overlays = this._attachedOverlays.slice(); // Dispatch the mouse event to the top overlay which has subscribers to its mouse events. // We want to target all overlays for which the click could be considered as outside click. // As soon as we reach an overlay for which the click is not outside click we break off // the loop. for (let i = overlays.length - 1; i > -1; i--) { const overlayRef = overlays[i]; if (overlayRef._outsidePointerEvents.observers.length < 1 || !overlayRef.hasAttached()) { continue; } // If it's a click inside the overlay, just break - we should do nothing // If it's an outside click (both origin and target of the click) dispatch the mouse event, // and proceed with the next overlay if (overlayRef.overlayElement.contains(target) || overlayRef.overlayElement.contains(origin)) { break; } const outsidePointerEvents = overlayRef._outsidePointerEvents; /** @breaking-change 14.0.0 _ngZone will be required. */ if (this._ngZone) { this._ngZone.run(() => outsidePointerEvents.next(event)); } else { outsidePointerEvents.next(event); } } }; } /** Add a new overlay to the list of attached overlay refs. */ add(overlayRef) { super.add(overlayRef); // Safari on iOS does not generate click events for non-interactive // elements. However, we want to receive a click for any element outside // the overlay. We can force a "clickable" state by setting // `cursor: pointer` on the document body. See: // https://developer.mozilla.org/en-US/docs/Web/API/Element/click_event#Safari_Mobile // https://developer.apple.com/library/archive/documentation/AppleApplications/Reference/SafariWebContent/HandlingEvents/HandlingEvents.html if (!this._isAttached) { const body = this._document.body; /** @breaking-change 14.0.0 _ngZone will be required. */ if (this._ngZone) { this._ngZone.runOutsideAngular(() => this._addEventListeners(body)); } else { this._addEventListeners(body); } // click event is not fired on iOS. To make element "clickable" we are // setting the cursor to pointer if (this._platform.IOS && !this._cursorStyleIsSet) { this._cursorOriginalValue = body.style.cursor; body.style.cursor = 'pointer'; this._cursorStyleIsSet = true; } this._isAttached = true; } } /** Detaches the global keyboard event listener. */ detach() { if (this._isAttached) { const body = this._document.body; body.removeEventListener('pointerdown', this._pointerDownListener, true); body.removeEventListener('click', this._clickListener, true); body.removeEventListener('auxclick', this._clickListener, true); body.removeEventListener('contextmenu', this._clickListener, true); if (this._platform.IOS && this._cursorStyleIsSet) { body.style.cursor = this._cursorOriginalValue; this._cursorStyleIsSet = false; } this._isAttached = false; } } _addEventListeners(body) { body.addEventListener('pointerdown', this._pointerDownListener, true); body.addEventListener('click', this._clickListener, true); body.addEventListener('auxclick', this._clickListener, true); body.addEventListener('contextmenu', this._clickListener, true); } static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: OverlayOutsideClickDispatcher, deps: [{ token: DOCUMENT }, { token: i1.Platform }, { token: i0.NgZone, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); } static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: OverlayOutsideClickDispatcher, providedIn: 'root' }); } } export { OverlayOutsideClickDispatcher }; i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: OverlayOutsideClickDispatcher, decorators: [{ type: Injectable, args: [{ providedIn: 'root' }] }], ctorParameters: function () { return [{ type: undefined, decorators: [{ type: Inject, args: [DOCUMENT] }] }, { type: i1.Platform }, { type: i0.NgZone, decorators: [{ type: Optional }] }]; } }); //# 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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 {DOCUMENT} from '@angular/common';\nimport {Inject, Injectable, NgZone, Optional} from '@angular/core';\nimport {Platform, _getEventTarget} from '@angular/cdk/platform';\nimport {BaseOverlayDispatcher} from './base-overlay-dispatcher';\nimport type {OverlayRef} from '../overlay-ref';\n\n/**\n * Service for dispatching mouse click events that land on the body to appropriate overlay ref,\n * if any. It maintains a list of attached overlays to determine best suited overlay based\n * on event target and order of overlay opens.\n */\n@Injectable({providedIn: 'root'})\nexport class OverlayOutsideClickDispatcher extends BaseOverlayDispatcher {\n  private _cursorOriginalValue: string;\n  private _cursorStyleIsSet = false;\n  private _pointerDownEventTarget: EventTarget | null;\n\n  constructor(\n    @Inject(DOCUMENT) document: any,\n    private _platform: Platform,\n    /** @breaking-change 14.0.0 _ngZone will be required. */\n    @Optional() private _ngZone?: NgZone,\n  ) {\n    super(document);\n  }\n\n  /** Add a new overlay to the list of attached overlay refs. */\n  override add(overlayRef: OverlayRef): void {\n    super.add(overlayRef);\n\n    // Safari on iOS does not generate click events for non-interactive\n    // elements. However, we want to receive a click for any element outside\n    // the overlay. We can force a \"clickable\" state by setting\n    // `cursor: pointer` on the document body. See:\n    // https://developer.mozilla.org/en-US/docs/Web/API/Element/click_event#Safari_Mobile\n    // https://developer.apple.com/library/archive/documentation/AppleApplications/Reference/SafariWebContent/HandlingEvents/HandlingEvents.html\n    if (!this._isAttached) {\n      const body = this._document.body;\n\n      /** @breaking-change 14.0.0 _ngZone will be required. */\n      if (this._ngZone) {\n        this._ngZone.runOutsideAngular(() => this._addEventListeners(body));\n      } else {\n        this._addEventListeners(body);\n      }\n\n      // click event is not fired on iOS. To make element \"clickable\" we are\n      // setting the cursor to pointer\n      if (this._platform.IOS && !this._cursorStyleIsSet) {\n        this._cursorOriginalValue = body.style.cursor;\n        body.style.cursor = 'pointer';\n        this._cursorStyleIsSet = true;\n      }\n\n      this._isAttached = true;\n    }\n  }\n\n  /** Detaches the global keyboard event listener. */\n  protected detach() {\n    if (this._isAttached) {\n      const body = this._document.body;\n      body.removeEventListener('pointerdown', this._pointerDownListener, true);\n      body.removeEventListener('click', this._clickListener, true);\n      body.removeEventListener('auxclick', this._clickListener, true);\n      body.removeEventListener('contextmenu', this._clickListener, true);\n      if (this._platform.IOS && this._cursorStyleIsSet) {\n        body.style.cursor = this._cursorOriginalValue;\n        this._cursorStyleIsSet = false;\n      }\n      this._isAttached = false;\n    }\n  }\n\n  private _addEventListeners(body: HTMLElement): void {\n    body.addEventListener('pointerdown', this._pointerDownListener, true);\n    body.addEventListener('click', this._clickListener, true);\n    body.addEventListener('auxclick', this._clickListener, true);\n    body.addEventListener('contextmenu', this._clickListener, true);\n  }\n\n  /** Store pointerdown event target to track origin of click. */\n  private _pointerDownListener = (event: PointerEvent) => {\n    this._pointerDownEventTarget = _getEventTarget(event);\n  };\n\n  /** Click event listener that will be attached to the body propagate phase. */\n  private _clickListener = (event: MouseEvent) => {\n    const target = _getEventTarget(event);\n    // In case of a click event, we want to check the origin of the click\n    // (e.g. in case where a user starts a click inside the overlay and\n    // releases the click outside of it).\n    // This is done by using the event target of the preceding pointerdown event.\n    // Every click event caused by a pointer device has a preceding pointerdown\n    // event, unless the click was programmatically triggered (e.g. in a unit test).\n    const origin =\n      event.type === 'click' && this._pointerDownEventTarget\n        ? this._pointerDownEventTarget\n        : target;\n    // Reset the stored pointerdown event target, to avoid having it interfere\n    // in subsequent events.\n    this._pointerDownEventTarget = null;\n\n    // We copy the array because the original may be modified asynchronously if the\n    // outsidePointerEvents listener decides to detach overlays resulting in index errors inside\n    // the for loop.\n    const overlays = this._attachedOverlays.slice();\n\n    // Dispatch the mouse event to the top overlay which has subscribers to its mouse events.\n    // We want to target all overlays for which the click could be considered as outside click.\n    // As soon as we reach an overlay for which the click is not outside click we break off\n    // the loop.\n    for (let i = overlays.length - 1; i > -1; i--) {\n      const overlayRef = overlays[i];\n      if (overlayRef._outsidePointerEvents.observers.length < 1 || !overlayRef.hasAttached()) {\n        continue;\n      }\n\n      // If it's a click inside the overlay, just break - we should do nothing\n      // If it's an outside click (both origin and target of the click) dispatch the mouse event,\n      // and proceed with the next overlay\n      if (\n        overlayRef.overlayElement.contains(target as Node) ||\n        overlayRef.overlayElement.contains(origin as Node)\n      ) {\n        break;\n      }\n\n      const outsidePointerEvents = overlayRef._outsidePointerEvents;\n      /** @breaking-change 14.0.0 _ngZone will be required. */\n      if (this._ngZone) {\n        this._ngZone.run(() => outsidePointerEvents.next(event));\n      } else {\n        outsidePointerEvents.next(event);\n      }\n    }\n  };\n}\n"]}