source: trip-planner-front/node_modules/@angular/cdk/esm2015/drag-drop/directives/drag-handle.js

/**
 * @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 { coerceBooleanProperty } from '@angular/cdk/coercion';
import { Directive, ElementRef, Inject, InjectionToken, Input, Optional, SkipSelf, } from '@angular/core';
import { Subject } from 'rxjs';
import { CDK_DRAG_PARENT } from '../drag-parent';
import { assertElementNode } from './assertions';
/**
 * Injection token that can be used to reference instances of `CdkDragHandle`. It serves as
 * alternative token to the actual `CdkDragHandle` class which could cause unnecessary
 * retention of the class and its directive metadata.
 */
export const CDK_DRAG_HANDLE = new InjectionToken('CdkDragHandle');
/** Handle that can be used to drag a CdkDrag instance. */
export class CdkDragHandle {
    constructor(element, parentDrag) {
        this.element = element;
        /** Emits when the state of the handle has changed. */
        this._stateChanges = new Subject();
        this._disabled = false;
        if (typeof ngDevMode === 'undefined' || ngDevMode) {
            assertElementNode(element.nativeElement, 'cdkDragHandle');
        }
        this._parentDrag = parentDrag;
    }
    /** Whether starting to drag through this handle is disabled. */
    get disabled() { return this._disabled; }
    set disabled(value) {
        this._disabled = coerceBooleanProperty(value);
        this._stateChanges.next(this);
    }
    ngOnDestroy() {
        this._stateChanges.complete();
    }
}
CdkDragHandle.decorators = [
    { type: Directive, args: [{
                selector: '[cdkDragHandle]',
                host: {
                    'class': 'cdk-drag-handle'
                },
                providers: [{ provide: CDK_DRAG_HANDLE, useExisting: CdkDragHandle }],
            },] }
];
CdkDragHandle.ctorParameters = () => [
    { type: ElementRef },
    { type: undefined, decorators: [{ type: Inject, args: [CDK_DRAG_PARENT,] }, { type: Optional }, { type: SkipSelf }] }
];
CdkDragHandle.propDecorators = {
    disabled: [{ type: Input, args: ['cdkDragHandleDisabled',] }]
};
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