client/src/standalone/player/events.ts

   1 import { EventHandler } from './definitions'
   2
   3 interface PlayerEventRegistrar {
   4   registrations: Function[]
   5 }
   6
   7 interface PlayerEventRegistrationMap {
   8   [ name: string ]: PlayerEventRegistrar
   9 }
  10
  11 export class EventRegistrar {
  12
  13   private eventRegistrations: PlayerEventRegistrationMap = {}
  14
  15   public bindToChannel (channel: Channel.MessagingChannel) {
  16     for (let name of Object.keys(this.eventRegistrations)) {
  17       channel.bind(name, (txn, params) => this.fire(name, params))
  18     }
  19   }
  20
  21   public registerTypes (names: string[]) {
  22     for (let name of names) {
  23       this.eventRegistrations[ name ] = { registrations: [] }
  24     }
  25   }
  26
  27   public fire<T> (name: string, event: T) {
  28     this.eventRegistrations[ name ].registrations.forEach(x => x(event))
  29   }
  30
  31   public addListener<T> (name: string, handler: EventHandler<T>) {
  32     if (!this.eventRegistrations[ name ]) {
  33       console.warn(`PeerTube: addEventListener(): The event '${name}' is not supported`)
  34       return false
  35     }
  36
  37     this.eventRegistrations[ name ].registrations.push(handler)
  38     return true
  39   }
  40
  41   public removeListener<T> (name: string, handler: EventHandler<T>) {
  42     if (!this.eventRegistrations[ name ]) return false
  43
  44     this.eventRegistrations[ name ].registrations = this.eventRegistrations[ name ].registrations.filter(x => x === handler)
  45
  46     return true
  47   }
  48 }