1 files changed, 48 insertions, 0 deletions

diff --git a/client/src/standalone/embed-player-api/events.ts b/client/src/standalone/embed-player-api/events.ts
new file mode 100644
index 000000000..77d21c78c
--- /dev/null
+++ b/client/src/standalone/embed-player-api/events.ts
@@ -0,0 +1,48 @@
+import { EventHandler } from './definitions'
+
+interface PlayerEventRegistrar {
+  registrations: EventHandler<any>[]
+}
+
+interface PlayerEventRegistrationMap {
+  [ name: string ]: PlayerEventRegistrar
+}
+
+export class EventRegistrar {
+
+  private eventRegistrations: PlayerEventRegistrationMap = {}
+
+  public bindToChannel (channel: Channel.MessagingChannel) {
+    for (const name of Object.keys(this.eventRegistrations)) {
+      channel.bind(name, (txn, params) => this.fire(name, params))
+    }
+  }
+
+  public registerTypes (names: string[]) {
+    for (const name of names) {
+      this.eventRegistrations[name] = { registrations: [] }
+    }
+  }
+
+  public fire<T> (name: string, event: T) {
+    this.eventRegistrations[name].registrations.forEach(x => x(event))
+  }
+
+  public addListener<T> (name: string, handler: EventHandler<T>) {
+    if (!this.eventRegistrations[name]) {
+      console.warn(`PeerTube: addEventListener(): The event '${name}' is not supported`)
+      return false
+    }
+
+    this.eventRegistrations[name].registrations.push(handler)
+    return true
+  }
+
+  public removeListener<T> (name: string, handler: EventHandler<T>) {
+    if (!this.eventRegistrations[name]) return false
+
+    this.eventRegistrations[name].registrations = this.eventRegistrations[name].registrations.filter(x => x !== handler)
+
+    return true
+  }
+}