source: trip-planner-front/node_modules/@angular/material/esm2015/menu/menu-item.js@ fa375fe

Last change on this file since fa375fe was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1/**
2 * @license
3 * Copyright Google LLC All Rights Reserved.
4 *
5 * Use of this source code is governed by an MIT-style license that can be
6 * found in the LICENSE file at https://angular.io/license
7 */
8import { FocusMonitor } from '@angular/cdk/a11y';
9import { ChangeDetectionStrategy, Component, ElementRef, ViewEncapsulation, Inject, Optional, Input, HostListener, ChangeDetectorRef, } from '@angular/core';
10import { mixinDisabled, mixinDisableRipple, } from '@angular/material/core';
11import { Subject } from 'rxjs';
12import { DOCUMENT } from '@angular/common';
13import { MAT_MENU_PANEL } from './menu-panel';
14// Boilerplate for applying mixins to MatMenuItem.
15/** @docs-private */
16const _MatMenuItemBase = mixinDisableRipple(mixinDisabled(class {
17}));
18/**
19 * Single item inside of a `mat-menu`. Provides the menu item styling and accessibility treatment.
20 */
21export class MatMenuItem extends _MatMenuItemBase {
22 constructor(_elementRef,
23 /**
24 * @deprecated `_document` parameter is no longer being used and will be removed.
25 * @breaking-change 12.0.0
26 */
27 _document, _focusMonitor, _parentMenu,
28 /**
29 * @deprecated `_changeDetectorRef` to become a required parameter.
30 * @breaking-change 14.0.0
31 */
32 _changeDetectorRef) {
33 // @breaking-change 8.0.0 make `_focusMonitor` and `document` required params.
34 super();
35 this._elementRef = _elementRef;
36 this._focusMonitor = _focusMonitor;
37 this._parentMenu = _parentMenu;
38 this._changeDetectorRef = _changeDetectorRef;
39 /** ARIA role for the menu item. */
40 this.role = 'menuitem';
41 /** Stream that emits when the menu item is hovered. */
42 this._hovered = new Subject();
43 /** Stream that emits when the menu item is focused. */
44 this._focused = new Subject();
45 /** Whether the menu item is highlighted. */
46 this._highlighted = false;
47 /** Whether the menu item acts as a trigger for a sub-menu. */
48 this._triggersSubmenu = false;
49 if (_parentMenu && _parentMenu.addItem) {
50 _parentMenu.addItem(this);
51 }
52 }
53 /** Focuses the menu item. */
54 focus(origin, options) {
55 if (this._focusMonitor && origin) {
56 this._focusMonitor.focusVia(this._getHostElement(), origin, options);
57 }
58 else {
59 this._getHostElement().focus(options);
60 }
61 this._focused.next(this);
62 }
63 ngAfterViewInit() {
64 if (this._focusMonitor) {
65 // Start monitoring the element so it gets the appropriate focused classes. We want
66 // to show the focus style for menu items only when the focus was not caused by a
67 // mouse or touch interaction.
68 this._focusMonitor.monitor(this._elementRef, false);
69 }
70 }
71 ngOnDestroy() {
72 if (this._focusMonitor) {
73 this._focusMonitor.stopMonitoring(this._elementRef);
74 }
75 if (this._parentMenu && this._parentMenu.removeItem) {
76 this._parentMenu.removeItem(this);
77 }
78 this._hovered.complete();
79 this._focused.complete();
80 }
81 /** Used to set the `tabindex`. */
82 _getTabIndex() {
83 return this.disabled ? '-1' : '0';
84 }
85 /** Returns the host DOM element. */
86 _getHostElement() {
87 return this._elementRef.nativeElement;
88 }
89 /** Prevents the default element actions if it is disabled. */
90 // We have to use a `HostListener` here in order to support both Ivy and ViewEngine.
91 // In Ivy the `host` bindings will be merged when this class is extended, whereas in
92 // ViewEngine they're overwritten.
93 // TODO(crisbeto): we move this back into `host` once Ivy is turned on by default.
94 // tslint:disable-next-line:no-host-decorator-in-concrete
95 _checkDisabled(event) {
96 if (this.disabled) {
97 event.preventDefault();
98 event.stopPropagation();
99 }
100 }
101 /** Emits to the hover stream. */
102 // We have to use a `HostListener` here in order to support both Ivy and ViewEngine.
103 // In Ivy the `host` bindings will be merged when this class is extended, whereas in
104 // ViewEngine they're overwritten.
105 // TODO(crisbeto): we move this back into `host` once Ivy is turned on by default.
106 // tslint:disable-next-line:no-host-decorator-in-concrete
107 _handleMouseEnter() {
108 this._hovered.next(this);
109 }
110 /** Gets the label to be used when determining whether the option should be focused. */
111 getLabel() {
112 var _a, _b;
113 const clone = this._elementRef.nativeElement.cloneNode(true);
114 const icons = clone.querySelectorAll('mat-icon, .material-icons');
115 // Strip away icons so they don't show up in the text.
116 for (let i = 0; i < icons.length; i++) {
117 const icon = icons[i];
118 (_a = icon.parentNode) === null || _a === void 0 ? void 0 : _a.removeChild(icon);
119 }
120 return ((_b = clone.textContent) === null || _b === void 0 ? void 0 : _b.trim()) || '';
121 }
122 _setHighlighted(isHighlighted) {
123 var _a;
124 // We need to mark this for check for the case where the content is coming from a
125 // `matMenuContent` whose change detection tree is at the declaration position,
126 // not the insertion position. See #23175.
127 // @breaking-change 14.0.0 Remove null check for `_changeDetectorRef`.
128 this._highlighted = isHighlighted;
129 (_a = this._changeDetectorRef) === null || _a === void 0 ? void 0 : _a.markForCheck();
130 }
131}
132MatMenuItem.decorators = [
133 { type: Component, args: [{
134 selector: '[mat-menu-item]',
135 exportAs: 'matMenuItem',
136 inputs: ['disabled', 'disableRipple'],
137 host: {
138 '[attr.role]': 'role',
139 '[class.mat-menu-item]': 'true',
140 '[class.mat-menu-item-highlighted]': '_highlighted',
141 '[class.mat-menu-item-submenu-trigger]': '_triggersSubmenu',
142 '[attr.tabindex]': '_getTabIndex()',
143 '[attr.aria-disabled]': 'disabled.toString()',
144 '[attr.disabled]': 'disabled || null',
145 'class': 'mat-focus-indicator',
146 },
147 changeDetection: ChangeDetectionStrategy.OnPush,
148 encapsulation: ViewEncapsulation.None,
149 template: "<ng-content></ng-content>\n<div class=\"mat-menu-ripple\" matRipple\n [matRippleDisabled]=\"disableRipple || disabled\"\n [matRippleTrigger]=\"_getHostElement()\">\n</div>\n\n<svg\n *ngIf=\"_triggersSubmenu\"\n class=\"mat-menu-submenu-icon\"\n viewBox=\"0 0 5 10\"\n focusable=\"false\"><polygon points=\"0,0 5,5 0,10\"/></svg>\n"
150 },] }
151];
152MatMenuItem.ctorParameters = () => [
153 { type: ElementRef },
154 { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
155 { type: FocusMonitor },
156 { type: undefined, decorators: [{ type: Inject, args: [MAT_MENU_PANEL,] }, { type: Optional }] },
157 { type: ChangeDetectorRef }
158];
159MatMenuItem.propDecorators = {
160 role: [{ type: Input }],
161 _checkDisabled: [{ type: HostListener, args: ['click', ['$event'],] }],
162 _handleMouseEnter: [{ type: HostListener, args: ['mouseenter',] }]
163};
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Provides the menu item styling and accessibility treatment.\n */\n@Component({\n  selector: '[mat-menu-item]',\n  exportAs: 'matMenuItem',\n  inputs: ['disabled', 'disableRipple'],\n  host: {\n    '[attr.role]': 'role',\n    '[class.mat-menu-item]': 'true',\n    '[class.mat-menu-item-highlighted]': '_highlighted',\n    '[class.mat-menu-item-submenu-trigger]': '_triggersSubmenu',\n    '[attr.tabindex]': '_getTabIndex()',\n    '[attr.aria-disabled]': 'disabled.toString()',\n    '[attr.disabled]': 'disabled || null',\n    'class': 'mat-focus-indicator',\n  },\n  changeDetection: ChangeDetectionStrategy.OnPush,\n  encapsulation: ViewEncapsulation.None,\n  templateUrl: 'menu-item.html',\n})\nexport class MatMenuItem extends _MatMenuItemBase\n    implements FocusableOption, CanDisable, CanDisableRipple, AfterViewInit, OnDestroy {\n\n  /** ARIA role for the menu item. */\n  @Input() role: 'menuitem' | 'menuitemradio' | 'menuitemcheckbox' = 'menuitem';\n\n  /** Stream that emits when the menu item is hovered. */\n  readonly _hovered: Subject<MatMenuItem> = new Subject<MatMenuItem>();\n\n  /** Stream that emits when the menu item is focused. */\n  readonly _focused = new Subject<MatMenuItem>();\n\n  /** Whether the menu item is highlighted. */\n  _highlighted: boolean = false;\n\n  /** Whether the menu item acts as a trigger for a sub-menu. */\n  _triggersSubmenu: boolean = false;\n\n  constructor(\n    private _elementRef: ElementRef<HTMLElement>,\n    /**\n     * @deprecated `_document` parameter is no longer being used and will be removed.\n     * @breaking-change 12.0.0\n     */\n    @Inject(DOCUMENT) _document?: any,\n    private _focusMonitor?: FocusMonitor,\n    @Inject(MAT_MENU_PANEL) @Optional() public _parentMenu?: MatMenuPanel<MatMenuItem>,\n    /**\n     * @deprecated `_changeDetectorRef` to become a required parameter.\n     * @breaking-change 14.0.0\n     */\n    private _changeDetectorRef?: ChangeDetectorRef) {\n\n    // @breaking-change 8.0.0 make `_focusMonitor` and `document` required params.\n    super();\n\n    if (_parentMenu && _parentMenu.addItem) {\n      _parentMenu.addItem(this);\n    }\n  }\n\n  /** Focuses the menu item. */\n  focus(origin?: FocusOrigin, options?: FocusOptions): void {\n    if (this._focusMonitor && origin) {\n      this._focusMonitor.focusVia(this._getHostElement(), origin, options);\n    } else {\n      this._getHostElement().focus(options);\n    }\n\n    this._focused.next(this);\n  }\n\n  ngAfterViewInit() {\n    if (this._focusMonitor) {\n      // Start monitoring the element so it gets the appropriate focused classes. We want\n      // to show the focus style for menu items only when the focus was not caused by a\n      // mouse or touch interaction.\n      this._focusMonitor.monitor(this._elementRef, false);\n    }\n  }\n\n  ngOnDestroy() {\n    if (this._focusMonitor) {\n      this._focusMonitor.stopMonitoring(this._elementRef);\n    }\n\n    if (this._parentMenu && this._parentMenu.removeItem) {\n      this._parentMenu.removeItem(this);\n    }\n\n    this._hovered.complete();\n    this._focused.complete();\n  }\n\n  /** Used to set the `tabindex`. */\n  _getTabIndex(): string {\n    return this.disabled ? '-1' : '0';\n  }\n\n  /** Returns the host DOM element. */\n  _getHostElement(): HTMLElement {\n    return this._elementRef.nativeElement;\n  }\n\n  /** Prevents the default element actions if it is disabled. */\n  // We have to use a `HostListener` here in order to support both Ivy and ViewEngine.\n  // In Ivy the `host` bindings will be merged when this class is extended, whereas in\n  // ViewEngine they're overwritten.\n  // TODO(crisbeto): we move this back into `host` once Ivy is turned on by default.\n  // tslint:disable-next-line:no-host-decorator-in-concrete\n  @HostListener('click', ['$event'])\n  _checkDisabled(event: Event): void {\n    if (this.disabled) {\n      event.preventDefault();\n      event.stopPropagation();\n    }\n  }\n\n  /** Emits to the hover stream. */\n  // We have to use a `HostListener` here in order to support both Ivy and ViewEngine.\n  // In Ivy the `host` bindings will be merged when this class is extended, whereas in\n  // ViewEngine they're overwritten.\n  // TODO(crisbeto): we move this back into `host` once Ivy is turned on by default.\n  // tslint:disable-next-line:no-host-decorator-in-concrete\n  @HostListener('mouseenter')\n  _handleMouseEnter() {\n    this._hovered.next(this);\n  }\n\n  /** Gets the label to be used when determining whether the option should be focused. */\n  getLabel(): string {\n    const clone = this._elementRef.nativeElement.cloneNode(true) as HTMLElement;\n    const icons = clone.querySelectorAll('mat-icon, .material-icons');\n\n    // Strip away icons so they don't show up in the text.\n    for (let i = 0; i < icons.length; i++) {\n      const icon = icons[i];\n      icon.parentNode?.removeChild(icon);\n    }\n\n    return clone.textContent?.trim() || '';\n  }\n\n  _setHighlighted(isHighlighted: boolean) {\n    // We need to mark this for check for the case where the content is coming from a\n    // `matMenuContent` whose change detection tree is at the declaration position,\n    // not the insertion position. See #23175.\n    // @breaking-change 14.0.0 Remove null check for `_changeDetectorRef`.\n    this._highlighted = isHighlighted;\n    this._changeDetectorRef?.markForCheck();\n  }\n\n  static ngAcceptInputType_disabled: BooleanInput;\n  static ngAcceptInputType_disableRipple: BooleanInput;\n}\n"]}
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