Created
January 21, 2021 22:17
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| import { Component, OnInit, Inject, ViewChild, ElementRef, ChangeDetectorRef } from '@angular/core'; | |
| import { DOCUMENT } from '@angular/common'; | |
| declare const PresentationRequest: any; | |
| @Component({ | |
| selector: 'app-emitter', | |
| templateUrl: './emitter.component.html', | |
| styleUrls: ['./emitter.component.scss'] | |
| }) | |
| export class EmitterComponent implements OnInit { | |
| @ViewChild('inputValue') inputValue:ElementRef; | |
| readonly receiveUrl = 'http://localhost:4200/receiver'; | |
| presentationRequest; | |
| connectionID; | |
| connection; | |
| navigator: any; | |
| buttonDisabled = true; | |
| message; | |
| constructor(@Inject(DOCUMENT) private document: Document, | |
| private changeDetector: ChangeDetectorRef) { | |
| this.navigator = this.document.defaultView.navigator; | |
| try { | |
| this.presentationRequest = new PresentationRequest(this.receiveUrl); | |
| this.navigator.defaultRequest = this.presentationRequest; | |
| } catch { | |
| console.log("API not suported"); | |
| } | |
| } | |
| ngOnInit(): void { | |
| if (this.navigator.defaultRequest) { | |
| this.navigator.defaultRequest.getAvailability().then((availability: any) => { | |
| console.log(availability); | |
| if(availability){ | |
| this.buttonDisabled = availability.value | |
| } | |
| }).catch(error => { | |
| console.log('> ' + error.name + ': ' + error.message); | |
| this.buttonDisabled = true; | |
| }); | |
| } | |
| } | |
| start() { | |
| if (this.navigator.defaultRequest) { | |
| this.navigator.defaultRequest.start().then((connection: any) => { | |
| this.connectionID = connection.id; | |
| this.connection = connection; | |
| this.connection.onmessage = (event) => this.handlerOnmessage(event); | |
| }).catch(error=> { | |
| console.log('> ' + error.name + ': ' + error.message); | |
| }); | |
| } | |
| } | |
| close() { | |
| if (this.connection) { | |
| this.connection.close(); | |
| } | |
| } | |
| terminate() { | |
| if (this.connection) { | |
| this.connection.terminate(); | |
| } | |
| } | |
| reconnect() { | |
| if (!!this.connectionID) { | |
| this.navigator.defaultRequest.reconnect(this.connectionID).then((connection: any) => { | |
| this.connectionID = connection.id; | |
| this.connection = connection; | |
| }).catch(error => { | |
| console.log('> ' + error.name + ': ' + error.message); | |
| }); | |
| } | |
| } | |
| handlerOnmessage(event: MessageEvent) { | |
| this.message = event.data; | |
| this.changeDetector.detectChanges(); | |
| } | |
| sendMessage() { | |
| if (this.connection) { | |
| this.connection.send(this.inputValue.nativeElement.value); | |
| } | |
| } | |
| } |
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