all files / controls/vg-mute/ vg-mute.ts

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import { Component, Input, ElementRef, HostListener, OnInit, ViewEncapsulation, OnDestroy } from '@angular/core';
import { VgAPI } from '../../core/services/vg-api';
import { Subscription } from 'rxjs/Subscription';
 
 
@Component({
    selector: 'vg-mute',
    encapsulation: ViewEncapsulation.None,
    template: `
        <div class="icon"
             [class.vg-icon-volume_up]="getVolume() >= 0.75"
             [class.vg-icon-volume_down]="getVolume() >= 0.25 && getVolume() < 0.75"
             [class.vg-icon-volume_mute]="getVolume() > 0 && getVolume() < 0.25"
             [class.vg-icon-volume_off]="getVolume() === 0"
             tabindex="0"
             role="button"
             aria-label="mute button"
             [attr.aria-valuetext]="ariaValue">
        </div>`,
    styles: [ `
        vg-mute {
            -webkit-touch-callout: none;
            -webkit-user-select: none;
            -khtml-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            user-select: none;
            display: flex;
            justify-content: center;
            height: 50px;
            width: 50px;
            cursor: pointer;
            color: white;
            line-height: 50px;
        }
 
        vg-mute .icon {
            pointer-events: none;
        }
    ` ]
})
export class VgMute implements OnInit, OnDestroy {
    @Input() vgFor: string;
    elem: HTMLElement;
    target: any;
 
    currentVolume: number;
 
    subscriptions: Subscription[] = [];
 
    ariaValue = 'unmuted';
 
    constructor(ref: ElementRef, public API: VgAPI) {
        this.elem = ref.nativeElement;
    }
 
    ngOnInit() {
        if (this.API.isPlayerReady) {
            this.onPlayerReady();
        }
        else {
            this.subscriptions.push(this.API.playerReadyEvent.subscribe(() => this.onPlayerReady()));
        }
    }
 
    onPlayerReady() {
        this.target = this.API.getMediaById(this.vgFor);
        this.currentVolume = this.target.volume;
    }
 
    @HostListener('click')
    onClick() {
        this.changeMuteState();
    }
 
    @HostListener('keydown', ['$event'])
    onKeyDown(event: KeyboardEvent) {
        // On press Enter (13) or Space (32)
        if (event.keyCode === 13 || event.keyCode === 32) {
            event.preventDefault();
            this.changeMuteState();
        }
    }
 
    changeMuteState() {
        let volume = this.getVolume();
 
        if (volume === 0) {
            this.target.volume = this.currentVolume;
        }
        else {
            this.currentVolume = volume;
            this.target.volume = 0;
        }
    }
 
    getVolume() {
        const volume = this.target ? this.target.volume : 0;
        this.ariaValue = volume ? 'unmuted' : 'muted';
        return volume;
    }
 
    ngOnDestroy() {
        this.subscriptions.forEach(s => s.unsubscribe());
    }
}