@angular/cdk
Version:
Angular Material Component Development Kit
218 lines • 29.8 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
*/
import { Directive, inject, Injectable, Input } from '@angular/core';
import { Directionality } from '@angular/cdk/bidi';
import { Overlay, OverlayConfig, STANDARD_DROPDOWN_BELOW_POSITIONS, } from '@angular/cdk/overlay';
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { _getEventTarget } from '@angular/cdk/platform';
import { merge, partition } from 'rxjs';
import { skip, takeUntil } from 'rxjs/operators';
import { MENU_STACK, MenuStack } from './menu-stack';
import { CdkMenuTriggerBase, MENU_TRIGGER } from './menu-trigger-base';
import * as i0 from "@angular/core";
/** The preferred menu positions for the context menu. */
const CONTEXT_MENU_POSITIONS = STANDARD_DROPDOWN_BELOW_POSITIONS.map(position => {
// In cases where the first menu item in the context menu is a trigger the submenu opens on a
// hover event. We offset the context menu 2px by default to prevent this from occurring.
const offsetX = position.overlayX === 'start' ? 2 : -2;
const offsetY = position.overlayY === 'top' ? 2 : -2;
return { ...position, offsetX, offsetY };
});
/** Tracks the last open context menu trigger across the entire application. */
export class ContextMenuTracker {
/**
* Close the previous open context menu and set the given one as being open.
* @param trigger The trigger for the currently open Context Menu.
*/
update(trigger) {
if (ContextMenuTracker._openContextMenuTrigger !== trigger) {
ContextMenuTracker._openContextMenuTrigger?.close();
ContextMenuTracker._openContextMenuTrigger = trigger;
}
}
}
ContextMenuTracker.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.2.0-rc.0", ngImport: i0, type: ContextMenuTracker, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
ContextMenuTracker.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "15.2.0-rc.0", ngImport: i0, type: ContextMenuTracker, providedIn: 'root' });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.2.0-rc.0", ngImport: i0, type: ContextMenuTracker, decorators: [{
type: Injectable,
args: [{ providedIn: 'root' }]
}] });
/**
* A directive that opens a menu when a user right-clicks within its host element.
* It is aware of nested context menus and will trigger only the lowest level non-disabled context menu.
*/
export class CdkContextMenuTrigger extends CdkMenuTriggerBase {
/** Whether the context menu is disabled. */
get disabled() {
return this._disabled;
}
set disabled(value) {
this._disabled = coerceBooleanProperty(value);
}
constructor() {
super();
/** The CDK overlay service. */
this._overlay = inject(Overlay);
/** The directionality of the page. */
this._directionality = inject(Directionality, { optional: true });
/** The app's context menu tracking registry */
this._contextMenuTracker = inject(ContextMenuTracker);
this._disabled = false;
this._setMenuStackCloseListener();
}
/**
* Open the attached menu at the specified location.
* @param coordinates where to open the context menu
*/
open(coordinates) {
this._open(coordinates, false);
}
/** Close the currently opened context menu. */
close() {
this.menuStack.closeAll();
}
/**
* Open the context menu and closes any previously open menus.
* @param event the mouse event which opens the context menu.
*/
_openOnContextMenu(event) {
if (!this.disabled) {
// Prevent the native context menu from opening because we're opening a custom one.
event.preventDefault();
// Stop event propagation to ensure that only the closest enabled context menu opens.
// Otherwise, any context menus attached to containing elements would *also* open,
// resulting in multiple stacked context menus being displayed.
event.stopPropagation();
this._contextMenuTracker.update(this);
this._open({ x: event.clientX, y: event.clientY }, true);
// A context menu can be triggered via a mouse right click or a keyboard shortcut.
if (event.button === 2) {
this.childMenu?.focusFirstItem('mouse');
}
else if (event.button === 0) {
this.childMenu?.focusFirstItem('keyboard');
}
else {
this.childMenu?.focusFirstItem('program');
}
}
}
/**
* Get the configuration object used to create the overlay.
* @param coordinates the location to place the opened menu
*/
_getOverlayConfig(coordinates) {
return new OverlayConfig({
positionStrategy: this._getOverlayPositionStrategy(coordinates),
scrollStrategy: this._overlay.scrollStrategies.reposition(),
direction: this._directionality || undefined,
});
}
/**
* Get the position strategy for the overlay which specifies where to place the menu.
* @param coordinates the location to place the opened menu
*/
_getOverlayPositionStrategy(coordinates) {
return this._overlay
.position()
.flexibleConnectedTo(coordinates)
.withLockedPosition()
.withGrowAfterOpen()
.withPositions(this.menuPosition ?? CONTEXT_MENU_POSITIONS);
}
/** Subscribe to the menu stack close events and close this menu when requested. */
_setMenuStackCloseListener() {
this.menuStack.closed.pipe(takeUntil(this.destroyed)).subscribe(({ item }) => {
if (item === this.childMenu && this.isOpen()) {
this.closed.next();
this.overlayRef.detach();
}
});
}
/**
* Subscribe to the overlays outside pointer events stream and handle closing out the stack if a
* click occurs outside the menus.
* @param ignoreFirstAuxClick Whether to ignore the first auxclick event outside the menu.
*/
_subscribeToOutsideClicks(ignoreFirstAuxClick) {
if (this.overlayRef) {
let outsideClicks = this.overlayRef.outsidePointerEvents();
// If the menu was triggered by the `contextmenu` event, skip the first `auxclick` event
// because it fires when the mouse is released on the same click that opened the menu.
if (ignoreFirstAuxClick) {
const [auxClicks, nonAuxClicks] = partition(outsideClicks, ({ type }) => type === 'auxclick');
outsideClicks = merge(nonAuxClicks, auxClicks.pipe(skip(1)));
}
outsideClicks.pipe(takeUntil(this.stopOutsideClicksListener)).subscribe(event => {
if (!this.isElementInsideMenuStack(_getEventTarget(event))) {
this.menuStack.closeAll();
}
});
}
}
/**
* Open the attached menu at the specified location.
* @param coordinates where to open the context menu
* @param ignoreFirstOutsideAuxClick Whether to ignore the first auxclick outside the menu after opening.
*/
_open(coordinates, ignoreFirstOutsideAuxClick) {
if (this.disabled) {
return;
}
if (this.isOpen()) {
// since we're moving this menu we need to close any submenus first otherwise they end up
// disconnected from this one.
this.menuStack.closeSubMenuOf(this.childMenu);
this.overlayRef.getConfig().positionStrategy.setOrigin(coordinates);
this.overlayRef.updatePosition();
}
else {
this.opened.next();
if (this.overlayRef) {
this.overlayRef.getConfig().positionStrategy.setOrigin(coordinates);
this.overlayRef.updatePosition();
}
else {
this.overlayRef = this._overlay.create(this._getOverlayConfig(coordinates));
}
this.overlayRef.attach(this.getMenuContentPortal());
this._subscribeToOutsideClicks(ignoreFirstOutsideAuxClick);
}
}
}
CdkContextMenuTrigger.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.2.0-rc.0", ngImport: i0, type: CdkContextMenuTrigger, deps: [], target: i0.ɵɵFactoryTarget.Directive });
CdkContextMenuTrigger.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "15.2.0-rc.0", type: CdkContextMenuTrigger, isStandalone: true, selector: "[cdkContextMenuTriggerFor]", inputs: { menuTemplateRef: ["cdkContextMenuTriggerFor", "menuTemplateRef"], menuPosition: ["cdkContextMenuPosition", "menuPosition"], menuData: ["cdkContextMenuTriggerData", "menuData"], disabled: ["cdkContextMenuDisabled", "disabled"] }, outputs: { opened: "cdkContextMenuOpened", closed: "cdkContextMenuClosed" }, host: { listeners: { "contextmenu": "_openOnContextMenu($event)" }, properties: { "attr.data-cdk-menu-stack-id": "null" } }, providers: [
{ provide: MENU_TRIGGER, useExisting: CdkContextMenuTrigger },
{ provide: MENU_STACK, useClass: MenuStack },
], exportAs: ["cdkContextMenuTriggerFor"], usesInheritance: true, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.2.0-rc.0", ngImport: i0, type: CdkContextMenuTrigger, decorators: [{
type: Directive,
args: [{
selector: '[cdkContextMenuTriggerFor]',
exportAs: 'cdkContextMenuTriggerFor',
standalone: true,
host: {
'[attr.data-cdk-menu-stack-id]': 'null',
'(contextmenu)': '_openOnContextMenu($event)',
},
inputs: [
'menuTemplateRef: cdkContextMenuTriggerFor',
'menuPosition: cdkContextMenuPosition',
'menuData: cdkContextMenuTriggerData',
],
outputs: ['opened: cdkContextMenuOpened', 'closed: cdkContextMenuClosed'],
providers: [
{ provide: MENU_TRIGGER, useExisting: CdkContextMenuTrigger },
{ provide: MENU_STACK, useClass: MenuStack },
],
}]
}], ctorParameters: function () { return []; }, propDecorators: { disabled: [{
type: Input,
args: ['cdkContextMenuDisabled']
}] } });
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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 {Directive, inject, Injectable, Input, OnDestroy} from '@angular/core';\nimport {Directionality} from '@angular/cdk/bidi';\nimport {\n  FlexibleConnectedPositionStrategy,\n  Overlay,\n  OverlayConfig,\n  STANDARD_DROPDOWN_BELOW_POSITIONS,\n} from '@angular/cdk/overlay';\nimport {BooleanInput, coerceBooleanProperty} from '@angular/cdk/coercion';\nimport {_getEventTarget} from '@angular/cdk/platform';\nimport {merge, partition} from 'rxjs';\nimport {skip, takeUntil} from 'rxjs/operators';\nimport {MENU_STACK, MenuStack} from './menu-stack';\nimport {CdkMenuTriggerBase, MENU_TRIGGER} from './menu-trigger-base';\n\n/** The preferred menu positions for the context menu. */\nconst CONTEXT_MENU_POSITIONS = STANDARD_DROPDOWN_BELOW_POSITIONS.map(position => {\n  // In cases where the first menu item in the context menu is a trigger the submenu opens on a\n  // hover event. We offset the context menu 2px by default to prevent this from occurring.\n  const offsetX = position.overlayX === 'start' ? 2 : -2;\n  const offsetY = position.overlayY === 'top' ? 2 : -2;\n  return {...position, offsetX, offsetY};\n});\n\n/** Tracks the last open context menu trigger across the entire application. */\n@Injectable({providedIn: 'root'})\nexport class ContextMenuTracker {\n  /** The last open context menu trigger. */\n  private static _openContextMenuTrigger?: CdkContextMenuTrigger;\n\n  /**\n   * Close the previous open context menu and set the given one as being open.\n   * @param trigger The trigger for the currently open Context Menu.\n   */\n  update(trigger: CdkContextMenuTrigger) {\n    if (ContextMenuTracker._openContextMenuTrigger !== trigger) {\n      ContextMenuTracker._openContextMenuTrigger?.close();\n      ContextMenuTracker._openContextMenuTrigger = trigger;\n    }\n  }\n}\n\n/** The coordinates where the context menu should open. */\nexport type ContextMenuCoordinates = {x: number; y: number};\n\n/**\n * A directive that opens a menu when a user right-clicks within its host element.\n * It is aware of nested context menus and will trigger only the lowest level non-disabled context menu.\n */\n@Directive({\n  selector: '[cdkContextMenuTriggerFor]',\n  exportAs: 'cdkContextMenuTriggerFor',\n  standalone: true,\n  host: {\n    '[attr.data-cdk-menu-stack-id]': 'null',\n    '(contextmenu)': '_openOnContextMenu($event)',\n  },\n  inputs: [\n    'menuTemplateRef: cdkContextMenuTriggerFor',\n    'menuPosition: cdkContextMenuPosition',\n    'menuData: cdkContextMenuTriggerData',\n  ],\n  outputs: ['opened: cdkContextMenuOpened', 'closed: cdkContextMenuClosed'],\n  providers: [\n    {provide: MENU_TRIGGER, useExisting: CdkContextMenuTrigger},\n    {provide: MENU_STACK, useClass: MenuStack},\n  ],\n})\nexport class CdkContextMenuTrigger extends CdkMenuTriggerBase implements OnDestroy {\n  /** The CDK overlay service. */\n  private readonly _overlay = inject(Overlay);\n\n  /** The directionality of the page. */\n  private readonly _directionality = inject(Directionality, {optional: true});\n\n  /** The app's context menu tracking registry */\n  private readonly _contextMenuTracker = inject(ContextMenuTracker);\n\n  /** Whether the context menu is disabled. */\n  @Input('cdkContextMenuDisabled')\n  get disabled(): boolean {\n    return this._disabled;\n  }\n  set disabled(value: BooleanInput) {\n    this._disabled = coerceBooleanProperty(value);\n  }\n  private _disabled = false;\n\n  constructor() {\n    super();\n    this._setMenuStackCloseListener();\n  }\n\n  /**\n   * Open the attached menu at the specified location.\n   * @param coordinates where to open the context menu\n   */\n  open(coordinates: ContextMenuCoordinates) {\n    this._open(coordinates, false);\n  }\n\n  /** Close the currently opened context menu. */\n  close() {\n    this.menuStack.closeAll();\n  }\n\n  /**\n   * Open the context menu and closes any previously open menus.\n   * @param event the mouse event which opens the context menu.\n   */\n  _openOnContextMenu(event: MouseEvent) {\n    if (!this.disabled) {\n      // Prevent the native context menu from opening because we're opening a custom one.\n      event.preventDefault();\n\n      // Stop event propagation to ensure that only the closest enabled context menu opens.\n      // Otherwise, any context menus attached to containing elements would *also* open,\n      // resulting in multiple stacked context menus being displayed.\n      event.stopPropagation();\n\n      this._contextMenuTracker.update(this);\n      this._open({x: event.clientX, y: event.clientY}, true);\n\n      // A context menu can be triggered via a mouse right click or a keyboard shortcut.\n      if (event.button === 2) {\n        this.childMenu?.focusFirstItem('mouse');\n      } else if (event.button === 0) {\n        this.childMenu?.focusFirstItem('keyboard');\n      } else {\n        this.childMenu?.focusFirstItem('program');\n      }\n    }\n  }\n\n  /**\n   * Get the configuration object used to create the overlay.\n   * @param coordinates the location to place the opened menu\n   */\n  private _getOverlayConfig(coordinates: ContextMenuCoordinates) {\n    return new OverlayConfig({\n      positionStrategy: this._getOverlayPositionStrategy(coordinates),\n      scrollStrategy: this._overlay.scrollStrategies.reposition(),\n      direction: this._directionality || undefined,\n    });\n  }\n\n  /**\n   * Get the position strategy for the overlay which specifies where to place the menu.\n   * @param coordinates the location to place the opened menu\n   */\n  private _getOverlayPositionStrategy(\n    coordinates: ContextMenuCoordinates,\n  ): FlexibleConnectedPositionStrategy {\n    return this._overlay\n      .position()\n      .flexibleConnectedTo(coordinates)\n      .withLockedPosition()\n      .withGrowAfterOpen()\n      .withPositions(this.menuPosition ?? CONTEXT_MENU_POSITIONS);\n  }\n\n  /** Subscribe to the menu stack close events and close this menu when requested. */\n  private _setMenuStackCloseListener() {\n    this.menuStack.closed.pipe(takeUntil(this.destroyed)).subscribe(({item}) => {\n      if (item === this.childMenu && this.isOpen()) {\n        this.closed.next();\n        this.overlayRef!.detach();\n      }\n    });\n  }\n\n  /**\n   * Subscribe to the overlays outside pointer events stream and handle closing out the stack if a\n   * click occurs outside the menus.\n   * @param ignoreFirstAuxClick Whether to ignore the first auxclick event outside the menu.\n   */\n  private _subscribeToOutsideClicks(ignoreFirstAuxClick: boolean) {\n    if (this.overlayRef) {\n      let outsideClicks = this.overlayRef.outsidePointerEvents();\n      // If the menu was triggered by the `contextmenu` event, skip the first `auxclick` event\n      // because it fires when the mouse is released on the same click that opened the menu.\n      if (ignoreFirstAuxClick) {\n        const [auxClicks, nonAuxClicks] = partition(outsideClicks, ({type}) => type === 'auxclick');\n        outsideClicks = merge(nonAuxClicks, auxClicks.pipe(skip(1)));\n      }\n      outsideClicks.pipe(takeUntil(this.stopOutsideClicksListener)).subscribe(event => {\n        if (!this.isElementInsideMenuStack(_getEventTarget(event)!)) {\n          this.menuStack.closeAll();\n        }\n      });\n    }\n  }\n\n  /**\n   * Open the attached menu at the specified location.\n   * @param coordinates where to open the context menu\n   * @param ignoreFirstOutsideAuxClick Whether to ignore the first auxclick outside the menu after opening.\n   */\n  private _open(coordinates: ContextMenuCoordinates, ignoreFirstOutsideAuxClick: boolean) {\n    if (this.disabled) {\n      return;\n    }\n    if (this.isOpen()) {\n      // since we're moving this menu we need to close any submenus first otherwise they end up\n      // disconnected from this one.\n      this.menuStack.closeSubMenuOf(this.childMenu!);\n\n      (\n        this.overlayRef!.getConfig().positionStrategy as FlexibleConnectedPositionStrategy\n      ).setOrigin(coordinates);\n      this.overlayRef!.updatePosition();\n    } else {\n      this.opened.next();\n\n      if (this.overlayRef) {\n        (\n          this.overlayRef.getConfig().positionStrategy as FlexibleConnectedPositionStrategy\n        ).setOrigin(coordinates);\n        this.overlayRef.updatePosition();\n      } else {\n        this.overlayRef = this._overlay.create(this._getOverlayConfig(coordinates));\n      }\n\n      this.overlayRef.attach(this.getMenuContentPortal());\n      this._subscribeToOutsideClicks(ignoreFirstOutsideAuxClick);\n    }\n  }\n}\n"]}