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lens/src/extensions/ipc/ipc-main.ts
2021-07-23 15:14:11 -04:00

76 lines
3.6 KiB
TypeScript

/**
* Copyright (c) 2021 OpenLens Authors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
import { ipcMain } from "electron";
import { IpcPrefix, IpcRegistrar } from "./ipc-registrar";
import { Disposers } from "../lens-extension";
import type { LensMainExtension } from "../lens-main-extension";
import type { Disposer } from "../../common/utils";
import { once } from "lodash";
import { ipcMainHandle } from "../../common/ipc";
import logger from "../../main/logger";
export abstract class IpcMain extends IpcRegistrar {
constructor(extension: LensMainExtension) {
super(extension);
// Call the static method on the bottom child class.
extension[Disposers].push(() => (this.constructor as typeof IpcMain).resetInstance());
}
/**
* Listen for broadcasts within your extension
* @param channel The channel to listen for broadcasts on
* @param listener The function that will be called with the arguments of the broadcast
* @returns An optional disposer, Lens will cleanup when the extension is disabled or uninstalled even if this is not called
*/
listen(channel: string, listener: (event: Electron.IpcRendererEvent, ...args: any[]) => any): Disposer {
const prefixedChannel = `extensions@${this[IpcPrefix]}:${channel}`;
const cleanup = once(() => {
logger.info(`[IPC-RENDERER]: removing extension listener`, { channel, extension: { name: this.extension.name, version: this.extension.version } });
return ipcMain.removeListener(prefixedChannel, listener);
});
logger.info(`[IPC-RENDERER]: adding extension listener`, { channel, extension: { name: this.extension.name, version: this.extension.version } });
ipcMain.addListener(prefixedChannel, listener);
this.extension[Disposers].push(cleanup);
return cleanup;
}
/**
* Declare a RPC over `channel`. Lens will cleanup when the extension is disabled or uninstalled
* @param channel The name of the RPC
* @param handler The remote procedure that is called
*/
handle(channel: string, handler: (event: Electron.IpcMainInvokeEvent, ...args: any[]) => any): void {
const prefixedChannel = `extensions@${this[IpcPrefix]}:${channel}`;
logger.info(`[IPC-RENDERER]: adding extension handler`, { channel, extension: { name: this.extension.name, version: this.extension.version } });
ipcMainHandle(prefixedChannel, handler);
this.extension[Disposers].push(() => {
logger.info(`[IPC-RENDERER]: removing extension handler`, { channel, extension: { name: this.extension.name, version: this.extension.version } });
return ipcMain.removeHandler(prefixedChannel);
});
}
}