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