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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { WebContents } from 'electron';
import { validatedIpcMain } from 'vs/base/parts/ipc/electron-main/ipcMain';
import { VSBuffer } from 'vs/base/common/buffer';
import { Emitter, Event } from 'vs/base/common/event';
import { IDisposable, toDisposable } from 'vs/base/common/lifecycle';
import { ClientConnectionEvent, IPCServer } from 'vs/base/parts/ipc/common/ipc';
import { Protocol as ElectronProtocol } from 'vs/base/parts/ipc/common/ipc.electron';
interface IIPCEvent {
event: { sender: WebContents };
message: Buffer | null;
}
function createScopedOnMessageEvent(senderId: number, eventName: string): Event<VSBuffer | null> {
const onMessage = Event.fromNodeEventEmitter<IIPCEvent>(validatedIpcMain, eventName, (event, message) => ({ event, message }));
const onMessageFromSender = Event.filter(onMessage, ({ event }) => event.sender.id === senderId);
return Event.map(onMessageFromSender, ({ message }) => message ? VSBuffer.wrap(message) : message);
}
/**
* An implementation of `IPCServer` on top of Electron `ipcMain` API.
*/
export class Server extends IPCServer {
private static readonly Clients = new Map<number, IDisposable>();
private static getOnDidClientConnect(): Event<ClientConnectionEvent> {
const onHello = Event.fromNodeEventEmitter<WebContents>(validatedIpcMain, 'vscode:hello', ({ sender }) => sender);
return Event.map(onHello, webContents => {
const id = webContents.id;
const client = Server.Clients.get(id);
if (client) {
client.dispose();
}
const onDidClientReconnect = new Emitter<void>();
Server.Clients.set(id, toDisposable(() => onDidClientReconnect.fire()));
const onMessage = createScopedOnMessageEvent(id, 'vscode:message') as Event<VSBuffer>;
const onDidClientDisconnect = Event.any(Event.signal(createScopedOnMessageEvent(id, 'vscode:disconnect')), onDidClientReconnect.event);
const protocol = new ElectronProtocol(webContents, onMessage);
return { protocol, onDidClientDisconnect };
});
}
constructor() {
super(Server.getOnDidClientConnect());
}
}
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