36 lines
1.1 KiB
TypeScript
36 lines
1.1 KiB
TypeScript
import { CallbackStore, EventBusInterface } from './EventBus'
|
|
import { Event } from './Events'
|
|
import { IpcRenderer } from 'electron'
|
|
|
|
export class IpcRendererEventBus implements EventBusInterface {
|
|
private ipc: IpcRenderer
|
|
private callbacks: Array<CallbackStore> = []
|
|
constructor(ipc: IpcRenderer) {
|
|
this.ipc = ipc
|
|
}
|
|
public subscribe<MessageType>(event: Event<MessageType>, callback: (msg: MessageType) => void) {
|
|
const wrappedCallback = (_: any, arg: any) => {
|
|
callback(arg)
|
|
}
|
|
this.ipc.on(event.topic, wrappedCallback)
|
|
this.callbacks.push({
|
|
callback,
|
|
wrappedCallback,
|
|
})
|
|
}
|
|
public unsubscribeAll<MessageType>(event: Event<MessageType>) {
|
|
this.ipc.removeAllListeners(event.topic)
|
|
}
|
|
public unsubscribe<MessageType>(event: Event<MessageType>, callback: any) {
|
|
const item = this.callbacks.find(store => store.callback === callback)
|
|
if (!item) {
|
|
return
|
|
}
|
|
this.ipc.removeListener(event.topic, item.wrappedCallback)
|
|
this.callbacks = this.callbacks.filter(a => a !== item)
|
|
}
|
|
public emit<MessageType>(event: Event<MessageType>, msg: MessageType) {
|
|
this.ipc.send(event.topic, msg)
|
|
}
|
|
}
|