@ng-matero/extensions
Version:
Angular Material Extensions
99 lines • 15 kB
JavaScript
import { ESCAPE, hasModifierKey } from '@angular/cdk/keycodes';
import { merge, Subject } from 'rxjs';
import { filter, take } from 'rxjs/operators';
/**
* Reference to a drawer dispatched from the drawer service.
*/
export class MtxDrawerRef {
/** Instance of the component making up the content of the drawer. */
get instance() {
return this._ref.componentInstance;
}
/**
* `ComponentRef` of the component opened into the drawer. Will be
* null when the drawer is opened using a `TemplateRef`.
*/
get componentRef() {
return this._ref.componentRef;
}
constructor(_ref, config, containerInstance) {
this._ref = _ref;
/** Subject for notifying the user that the drawer has been dismissed. */
this._afterDismissed = new Subject();
/** Subject for notifying the user that the drawer has opened and appeared. */
this._afterOpened = new Subject();
this.containerInstance = containerInstance;
this.disableClose = config.disableClose;
this.id = _ref.id;
// Emit when opening animation completes
containerInstance._animationStateChanged
.pipe(filter(event => event.phaseName === 'done' && event.toState === 'visible'), take(1))
.subscribe(() => {
this._afterOpened.next();
this._afterOpened.complete();
});
// Dispose overlay when closing animation is complete
containerInstance._animationStateChanged
.pipe(filter(event => event.phaseName === 'done' && event.toState === 'hidden'), take(1))
.subscribe(() => {
clearTimeout(this._closeFallbackTimeout);
this._ref.close(this._result);
});
_ref.overlayRef.detachments().subscribe(() => {
this._ref.close(this._result);
});
merge(this.backdropClick(), this.keydownEvents().pipe(filter(event => event.keyCode === ESCAPE))).subscribe(event => {
if (!this.disableClose &&
(event.type !== 'keydown' || !hasModifierKey(event))) {
event.preventDefault();
this.dismiss();
}
});
}
/**
* Dismisses the drawer.
* @param result Data to be passed back to the drawer opener.
*/
dismiss(result) {
if (this.containerInstance && !this._afterDismissed.closed) {
// Transition the backdrop in parallel to the drawer.
this.containerInstance._animationStateChanged
.pipe(filter(event => event.phaseName === 'start'), take(1))
.subscribe(event => {
// The logic that disposes of the overlay depends on the exit animation completing, however
// it isn't guaranteed if the parent view is destroyed while it's running. Add a fallback
// timeout which will clean everything up if the animation hasn't fired within the specified
// amount of time plus 100ms. We don't need to run this outside the NgZone, because for the
// vast majority of cases the timeout will have been cleared before it has fired.
this._closeFallbackTimeout = setTimeout(() => {
this._ref.close(this._result);
}, event.totalTime + 100);
this._ref.overlayRef.detachBackdrop();
});
this._result = result;
this.containerInstance.exit();
this.containerInstance = null;
}
}
/** Gets an observable that is notified when the drawer is finished closing. */
afterDismissed() {
return this._ref.closed;
}
/** Gets an observable that is notified when the drawer has opened and appeared. */
afterOpened() {
return this._afterOpened;
}
/**
* Gets an observable that emits when the overlay's backdrop has been clicked.
*/
backdropClick() {
return this._ref.backdropClick;
}
/**
* Gets an observable that emits when keydown events are targeted on the overlay.
*/
keydownEvents() {
return this._ref.keydownEvents;
}
}
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Will be\n   * null when the drawer is opened using a `TemplateRef`.\n   */\n  get componentRef(): ComponentRef<T> | null {\n    return this._ref.componentRef;\n  }\n\n  /**\n   * Instance of the component into which the drawer content is projected.\n   * @docs-private\n   */\n  containerInstance: MtxDrawerContainer;\n\n  /** Whether the user is allowed to close the drawer. */\n  disableClose: boolean | undefined;\n\n  /** Unique ID for the drawer. */\n  id: string;\n\n  /** Subject for notifying the user that the drawer has been dismissed. */\n  private readonly _afterDismissed = new Subject<R | undefined>();\n\n  /** Subject for notifying the user that the drawer has opened and appeared. */\n  private readonly _afterOpened = new Subject<void>();\n\n  /** Result to be passed down to the `afterDismissed` stream. */\n  private _result: R | undefined;\n\n  /** Handle to the timeout that's running as a fallback in case the exit animation doesn't fire. */\n  private _closeFallbackTimeout: any;\n\n  constructor(\n    private _ref: DialogRef<R, T>,\n    config: MtxDrawerConfig,\n    containerInstance: MtxDrawerContainer\n  ) {\n    this.containerInstance = containerInstance;\n    this.disableClose = config.disableClose;\n    this.id = _ref.id;\n\n    // Emit when opening animation completes\n    containerInstance._animationStateChanged\n      .pipe(\n        filter(event => event.phaseName === 'done' && event.toState === 'visible'),\n        take(1)\n      )\n      .subscribe(() => {\n        this._afterOpened.next();\n        this._afterOpened.complete();\n      });\n\n    // Dispose overlay when closing animation is complete\n    containerInstance._animationStateChanged\n      .pipe(\n        filter(event => event.phaseName === 'done' && event.toState === 'hidden'),\n        take(1)\n      )\n      .subscribe(() => {\n        clearTimeout(this._closeFallbackTimeout);\n        this._ref.close(this._result);\n      });\n\n    _ref.overlayRef.detachments().subscribe(() => {\n      this._ref.close(this._result);\n    });\n\n    merge(\n      this.backdropClick(),\n      this.keydownEvents().pipe(filter(event => event.keyCode === ESCAPE))\n    ).subscribe(event => {\n      if (\n        !this.disableClose &&\n        (event.type !== 'keydown' || !hasModifierKey(event as KeyboardEvent))\n      ) {\n        event.preventDefault();\n        this.dismiss();\n      }\n    });\n  }\n\n  /**\n   * Dismisses the drawer.\n   * @param result Data to be passed back to the drawer opener.\n   */\n  dismiss(result?: R): void {\n    if (this.containerInstance && !this._afterDismissed.closed) {\n      // Transition the backdrop in parallel to the drawer.\n      this.containerInstance._animationStateChanged\n        .pipe(\n          filter(event => event.phaseName === 'start'),\n          take(1)\n        )\n        .subscribe(event => {\n          // The logic that disposes of the overlay depends on the exit animation completing, however\n          // it isn't guaranteed if the parent view is destroyed while it's running. Add a fallback\n          // timeout which will clean everything up if the animation hasn't fired within the specified\n          // amount of time plus 100ms. We don't need to run this outside the NgZone, because for the\n          // vast majority of cases the timeout will have been cleared before it has fired.\n          this._closeFallbackTimeout = setTimeout(() => {\n            this._ref.close(this._result);\n          }, event.totalTime + 100);\n\n          this._ref.overlayRef.detachBackdrop();\n        });\n\n      this._result = result;\n      this.containerInstance.exit();\n      this.containerInstance = null!;\n    }\n  }\n\n  /** Gets an observable that is notified when the drawer is finished closing. */\n  afterDismissed(): Observable<R | undefined> {\n    return this._ref.closed;\n  }\n\n  /** Gets an observable that is notified when the drawer has opened and appeared. */\n  afterOpened(): Observable<void> {\n    return this._afterOpened;\n  }\n\n  /**\n   * Gets an observable that emits when the overlay's backdrop has been clicked.\n   */\n  backdropClick(): Observable<MouseEvent> {\n    return this._ref.backdropClick;\n  }\n\n  /**\n   * Gets an observable that emits when keydown events are targeted on the overlay.\n   */\n  keydownEvents(): Observable<KeyboardEvent> {\n    return this._ref.keydownEvents;\n  }\n}\n"]}