Files
mqtt-explorer/events/EventBus.ts
2019-01-13 17:37:13 +01:00

56 lines
1.7 KiB
TypeScript

import { IpcMain, IpcRenderer, ipcMain, ipcRenderer } from 'electron'
import { Event } from './Events'
interface EventBusInterface {
subscribe<MessageType>(event: Event<MessageType>, callback:(msg: MessageType) => void): void
unsubscribeAll<MessageType>(event: Event<MessageType>): void
emit<MessageType>(event: Event<MessageType>, msg: MessageType): void
}
class IpcMainEventBus implements EventBusInterface {
private ipc: IpcMain
private client: any
constructor(ipc: IpcMain) {
this.ipc = ipc
}
public subscribe<MessageType>(event: Event<MessageType>, callback:(msg: MessageType) => void) {
console.log('subscribing', event.topic)
this.ipc.on(event.topic, (event: any, arg: any) => {
this.client = event.sender
callback(arg)
})
}
public unsubscribeAll<MessageType>(event: Event<MessageType>) {
this.ipc.removeAllListeners(event.topic)
}
public emit<MessageType>(event: Event<MessageType>, msg: MessageType) {
this.client.send(event.topic, msg)
}
}
class IpcRendererEventBus implements EventBusInterface {
private ipc: IpcRenderer
constructor(ipc: IpcRenderer) {
this.ipc = ipc
}
public subscribe<MessageType>(event: Event<MessageType>, callback:(msg: MessageType) => void) {
this.ipc.on(event.topic, (_event: any, arg: any) => callback(arg))
}
public unsubscribeAll<MessageType>(event: Event<MessageType>) {
this.ipc.removeAllListeners(event.topic)
}
public emit<MessageType>(event: Event<MessageType>, msg: MessageType) {
this.ipc.send(event.topic, msg)
}
}
export const rendererEvents = new IpcRendererEventBus(ipcRenderer)
export const backendEvents = new IpcMainEventBus(ipcMain)