@angular/material
Version:
Angular Material
160 lines • 20.6 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 { __extends } from "tslib";
import { FocusMonitor } from '@angular/cdk/a11y';
import { ChangeDetectionStrategy, Component, ElementRef, ViewEncapsulation, Inject, Optional, Input, HostListener, } from '@angular/core';
import { mixinDisabled, mixinDisableRipple, } from '@angular/material/core';
import { Subject } from 'rxjs';
import { DOCUMENT } from '@angular/common';
import { MAT_MENU_PANEL } from './menu-panel';
// Boilerplate for applying mixins to MatMenuItem.
/** @docs-private */
var MatMenuItemBase = /** @class */ (function () {
function MatMenuItemBase() {
}
return MatMenuItemBase;
}());
var _MatMenuItemMixinBase = mixinDisableRipple(mixinDisabled(MatMenuItemBase));
/**
* Single item inside of a `mat-menu`. Provides the menu item styling and accessibility treatment.
*/
var MatMenuItem = /** @class */ (function (_super) {
__extends(MatMenuItem, _super);
function MatMenuItem(_elementRef, document, _focusMonitor, _parentMenu) {
var _this =
// @breaking-change 8.0.0 make `_focusMonitor` and `document` required params.
_super.call(this) || this;
_this._elementRef = _elementRef;
_this._focusMonitor = _focusMonitor;
_this._parentMenu = _parentMenu;
/** ARIA role for the menu item. */
_this.role = 'menuitem';
/** Stream that emits when the menu item is hovered. */
_this._hovered = new Subject();
/** Stream that emits when the menu item is focused. */
_this._focused = new Subject();
/** Whether the menu item is highlighted. */
_this._highlighted = false;
/** Whether the menu item acts as a trigger for a sub-menu. */
_this._triggersSubmenu = false;
if (_focusMonitor) {
// Start monitoring the element so it gets the appropriate focused classes. We want
// to show the focus style for menu items only when the focus was not caused by a
// mouse or touch interaction.
_focusMonitor.monitor(_this._elementRef, false);
}
if (_parentMenu && _parentMenu.addItem) {
_parentMenu.addItem(_this);
}
_this._document = document;
return _this;
}
/** Focuses the menu item. */
MatMenuItem.prototype.focus = function (origin, options) {
if (origin === void 0) { origin = 'program'; }
if (this._focusMonitor) {
this._focusMonitor.focusVia(this._getHostElement(), origin, options);
}
else {
this._getHostElement().focus(options);
}
this._focused.next(this);
};
MatMenuItem.prototype.ngOnDestroy = function () {
if (this._focusMonitor) {
this._focusMonitor.stopMonitoring(this._elementRef);
}
if (this._parentMenu && this._parentMenu.removeItem) {
this._parentMenu.removeItem(this);
}
this._hovered.complete();
this._focused.complete();
};
/** Used to set the `tabindex`. */
MatMenuItem.prototype._getTabIndex = function () {
return this.disabled ? '-1' : '0';
};
/** Returns the host DOM element. */
MatMenuItem.prototype._getHostElement = function () {
return this._elementRef.nativeElement;
};
/** Prevents the default element actions if it is disabled. */
// We have to use a `HostListener` here in order to support both Ivy and ViewEngine.
// In Ivy the `host` bindings will be merged when this class is extended, whereas in
// ViewEngine they're overwritten.
// TODO(crisbeto): we move this back into `host` once Ivy is turned on by default.
// tslint:disable-next-line:no-host-decorator-in-concrete
MatMenuItem.prototype._checkDisabled = function (event) {
if (this.disabled) {
event.preventDefault();
event.stopPropagation();
}
};
/** Emits to the hover stream. */
// We have to use a `HostListener` here in order to support both Ivy and ViewEngine.
// In Ivy the `host` bindings will be merged when this class is extended, whereas in
// ViewEngine they're overwritten.
// TODO(crisbeto): we move this back into `host` once Ivy is turned on by default.
// tslint:disable-next-line:no-host-decorator-in-concrete
MatMenuItem.prototype._handleMouseEnter = function () {
this._hovered.next(this);
};
/** Gets the label to be used when determining whether the option should be focused. */
MatMenuItem.prototype.getLabel = function () {
var element = this._elementRef.nativeElement;
var textNodeType = this._document ? this._document.TEXT_NODE : 3;
var output = '';
if (element.childNodes) {
var length_1 = element.childNodes.length;
// Go through all the top-level text nodes and extract their text.
// We skip anything that's not a text node to prevent the text from
// being thrown off by something like an icon.
for (var i = 0; i < length_1; i++) {
if (element.childNodes[i].nodeType === textNodeType) {
output += element.childNodes[i].textContent;
}
}
}
return output.trim();
};
MatMenuItem.decorators = [
{ type: Component, args: [{
selector: '[mat-menu-item]',
exportAs: 'matMenuItem',
inputs: ['disabled', 'disableRipple'],
host: {
'[attr.role]': 'role',
'[class.mat-menu-item]': 'true',
'[class.mat-menu-item-highlighted]': '_highlighted',
'[class.mat-menu-item-submenu-trigger]': '_triggersSubmenu',
'[attr.tabindex]': '_getTabIndex()',
'[attr.aria-disabled]': 'disabled.toString()',
'[attr.disabled]': 'disabled || null',
'class': 'mat-focus-indicator',
},
changeDetection: ChangeDetectionStrategy.OnPush,
encapsulation: ViewEncapsulation.None,
template: "<ng-content></ng-content>\n<div class=\"mat-menu-ripple\" matRipple\n [matRippleDisabled]=\"disableRipple || disabled\"\n [matRippleTrigger]=\"_getHostElement()\">\n</div>\n"
}] }
];
/** @nocollapse */
MatMenuItem.ctorParameters = function () { return [
{ type: ElementRef },
{ type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
{ type: FocusMonitor },
{ type: undefined, decorators: [{ type: Inject, args: [MAT_MENU_PANEL,] }, { type: Optional }] }
]; };
MatMenuItem.propDecorators = {
role: [{ type: Input }],
_checkDisabled: [{ type: HostListener, args: ['click', ['$event'],] }],
_handleMouseEnter: [{ type: HostListener, args: ['mouseenter',] }]
};
return MatMenuItem;
}(_MatMenuItemMixinBase));
export { MatMenuItem };
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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 _MatMenuItemMixinBase\n    implements FocusableOption, CanDisable, CanDisableRipple, OnDestroy {\n\n  /** ARIA role for the menu item. */\n  @Input() role: 'menuitem' | 'menuitemradio' | 'menuitemcheckbox' = 'menuitem';\n\n  private _document: Document;\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    @Inject(DOCUMENT) document?: any,\n    private _focusMonitor?: FocusMonitor,\n    @Inject(MAT_MENU_PANEL) @Optional() public _parentMenu?: MatMenuPanel<MatMenuItem>) {\n\n    // @breaking-change 8.0.0 make `_focusMonitor` and `document` required params.\n    super();\n\n    if (_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      _focusMonitor.monitor(this._elementRef, false);\n    }\n\n    if (_parentMenu && _parentMenu.addItem) {\n      _parentMenu.addItem(this);\n    }\n\n    this._document = document;\n  }\n\n  /** Focuses the menu item. */\n  focus(origin: FocusOrigin = 'program', options?: FocusOptions): void {\n    if (this._focusMonitor) {\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  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 element: HTMLElement = this._elementRef.nativeElement;\n    const textNodeType = this._document ? this._document.TEXT_NODE : 3;\n    let output = '';\n\n    if (element.childNodes) {\n      const length = element.childNodes.length;\n\n      // Go through all the top-level text nodes and extract their text.\n      // We skip anything that's not a text node to prevent the text from\n      // being thrown off by something like an icon.\n      for (let i = 0; i < length; i++) {\n        if (element.childNodes[i].nodeType === textNodeType) {\n          output += element.childNodes[i].textContent;\n        }\n      }\n    }\n\n    return output.trim();\n  }\n\n  static ngAcceptInputType_disabled: BooleanInput;\n  static ngAcceptInputType_disableRipple: BooleanInput;\n}\n"]}