126 lines
4.0 KiB
TypeScript
126 lines
4.0 KiB
TypeScript
// (C) Copyright 2015 Moodle Pty Ltd.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { AfterViewInit, Component, ElementRef, Input, OnDestroy, ViewChild } from '@angular/core';
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import { ActivatedRouteSnapshot } from '@angular/router';
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import { IonContent, IonRouterOutlet } from '@ionic/angular';
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import { CoreScreen } from '@services/screen';
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import { BehaviorSubject, Observable, Subscription } from 'rxjs';
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export enum CoreSplitViewMode {
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MenuOnly = 'menu-only', // Hides content.
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ContentOnly = 'content-only', // Hides menu.
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MenuAndContent = 'menu-and-content', // Shows both menu and content.
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}
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@Component({
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selector: 'core-split-view',
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templateUrl: 'split-view.html',
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styleUrls: ['split-view.scss'],
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})
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export class CoreSplitViewComponent implements AfterViewInit, OnDestroy {
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@ViewChild(IonContent) menuContent!: IonContent;
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@ViewChild(IonRouterOutlet) contentOutlet!: IonRouterOutlet;
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@Input() placeholderText = 'core.emptysplit';
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@Input() mode?: CoreSplitViewMode;
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isNested = false;
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private outletRouteSubject: BehaviorSubject<ActivatedRouteSnapshot | null> = new BehaviorSubject(null);
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private subscriptions?: Subscription[];
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constructor(private element: ElementRef<HTMLElement>) {}
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get outletRoute(): ActivatedRouteSnapshot | null {
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return this.outletRouteSubject.value;
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}
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get outletActivated(): boolean {
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return this.contentOutlet.isActivated;
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}
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get outletRouteObservable(): Observable<ActivatedRouteSnapshot | null> {
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return this.outletRouteSubject.asObservable();
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}
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/**
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* @inheritdoc
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*/
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ngAfterViewInit(): void {
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this.isNested = !!this.element.nativeElement.parentElement?.closest('core-split-view');
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this.subscriptions = [
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this.contentOutlet.activateEvents.subscribe(() => {
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this.updateClasses();
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this.outletRouteSubject.next(this.contentOutlet.activatedRoute.snapshot);
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}),
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this.contentOutlet.deactivateEvents.subscribe(() => {
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this.updateClasses();
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this.outletRouteSubject.next(null);
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}),
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CoreScreen.layoutObservable.subscribe(() => this.updateClasses()),
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];
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this.updateClasses();
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}
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/**
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* @inheritdoc
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*/
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ngOnDestroy(): void {
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this.subscriptions?.forEach(subscription => subscription.unsubscribe());
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}
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/**
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* Update host classes.
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*/
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private updateClasses(): void {
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const classes: string[] = [this.getCurrentMode()];
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if (this.contentOutlet.isActivated) {
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classes.push('outlet-activated');
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}
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if (this.isNested) {
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classes.push('nested');
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}
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this.element.nativeElement.setAttribute('class', classes.join(' '));
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}
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/**
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* Get the current mode. Depending on the layout, outlet status, and whether this split view
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* is nested or not, this method will indicate which parts of the split view should be visible.
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*
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* @return Split view mode.
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*/
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private getCurrentMode(): CoreSplitViewMode {
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if (this.mode) {
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return this.mode;
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}
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if (this.isNested) {
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return CoreSplitViewMode.MenuOnly;
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}
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if (CoreScreen.isMobile) {
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return this.contentOutlet.isActivated
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? CoreSplitViewMode.ContentOnly
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: CoreSplitViewMode.MenuOnly;
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}
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return CoreSplitViewMode.MenuAndContent;
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}
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}
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