105 lines
2.5 KiB
TypeScript
105 lines
2.5 KiB
TypeScript
///
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/// Copyright © 2016-2021 The Thingsboard Authors
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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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///
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import {
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Component,
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EventEmitter,
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Input, OnChanges,
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OnDestroy, OnInit,
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Output, SimpleChanges
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} from '@angular/core';
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import { BehaviorSubject } from 'rxjs';
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import { delay, share } from 'rxjs/operators';
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import { HelpService } from '@core/services/help.service';
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@Component({
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selector: 'tb-help-markdown',
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templateUrl: './help-markdown.component.html',
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styleUrls: ['./help-markdown.component.scss']
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})
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export class HelpMarkdownComponent implements OnDestroy, OnInit, OnChanges {
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@Input() helpId: string;
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@Input() visible: boolean;
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@Output() markdownReady = new EventEmitter<void>();
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markdownText = new BehaviorSubject<string>(null);
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markdownText$ = this.markdownText.pipe(
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share()
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);
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isMarkdownReady = false;
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private loadHelpPending = false;
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constructor(private help: HelpService) {}
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ngOnInit(): void {
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this.loadHelpWhenVisible();
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}
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ngOnDestroy(): void {
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this.markdownText.complete();
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}
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ngOnChanges(changes: SimpleChanges): void {
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for (const propName of Object.keys(changes)) {
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const change = changes[propName];
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if (!change.firstChange && change.currentValue !== change.previousValue) {
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if (propName === 'visible') {
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if (this.loadHelpPending) {
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this.loadHelpPending = false;
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this.loadHelp();
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}
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}
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if (propName === 'helpId') {
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this.markdownText.next(null);
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this.loadHelpWhenVisible();
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}
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}
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}
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}
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private loadHelpWhenVisible() {
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if (this.visible) {
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this.loadHelp();
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} else {
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this.loadHelpPending = true;
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}
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}
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private loadHelp() {
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if (this.helpId) {
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this.help.getHelpContent(this.helpId).subscribe((content) => {
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this.markdownText.next(content);
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});
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}
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}
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onMarkdownReady() {
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this.isMarkdownReady = true;
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this.markdownReady.next();
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}
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markdownClick($event: MouseEvent) {
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}
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}
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