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import { Component, OnInit, OnDestroy, Input } from '@angular/core'
import { Subscription } from 'rxjs'
import { I18n } from '@ngx-translate/i18n-polyfill'
import { HotkeysService, Hotkey } from 'angular2-hotkeys'
@Component({
selector : 'my-hotkeys-cheatsheet',
templateUrl : './hotkeys.component.html',
styleUrls: [ './hotkeys.component.scss' ]
})
export class CheatSheetComponent implements OnInit, OnDestroy {
@Input() title = this.i18n('Keyboard Shortcuts:')
helpVisible = false
subscription: Subscription
hotkeys: Hotkey[]
constructor (
private hotkeysService: HotkeysService,
private i18n: I18n
) {}
public ngOnInit (): void {
this.subscription = this.hotkeysService.cheatSheetToggle.subscribe((isOpen) => {
if (isOpen !== false) {
this.hotkeys = this.hotkeysService.hotkeys.filter(hotkey => hotkey.description)
}
if (isOpen === false) {
this.helpVisible = false
} else {
this.toggleHelpVisible()
}
})
}
public ngOnDestroy (): void {
if (this.subscription) {
this.subscription.unsubscribe()
}
}
public toggleCheatSheet (): void {
this.hotkeysService.cheatSheetToggle.next(!this.helpVisible)
}
public toggleHelpVisible (): void {
this.helpVisible = !this.helpVisible
}
}
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