Electron support

From https://github.com/vector-im/vector-web/pull/2511 but with
just the actual electron changes

src/vector/platform/ElectronPlatform.js

@@ -0,0 +1,102 @@
+// @flow
+
+/*
+Copyright 2016 Aviral Dasgupta
+Copyright 2016 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import VectorBasePlatform from './VectorBasePlatform';
+import dis from 'matrix-react-sdk/lib/dispatcher';
+
+function onUpdateDownloaded(ev, releaseNotes, ver, date, updateURL) {
+    dis.dispatch({
+        action: 'new_version',
+        currentVersion: electron.remote.app.getVersion(),
+        newVersion: ver,
+        releaseNotes: releaseNotes,
+    });
+}
+
+// index.js imports us unconditionally, so we need this check here as well
+let electron = null, remote = null;
+if (window && window.process && window.process && window.process.type === 'renderer') {
+    electron = require('electron');
+    electron.remote.autoUpdater.on('update-downloaded', onUpdateDownloaded);
+    remote = electron.remote;
+}
+
+export default class ElectronPlatform extends VectorBasePlatform {
+    setNotificationCount(count: number) {
+        super.setNotificationCount(count);
+        // this sometimes throws because electron is made of fail:
+        // https://github.com/electron/electron/issues/7351
+        // For now, let's catch the error, but I suspect it may
+        // continue to fail and we might just have to accept that
+        // electron's remote RPC is a non-starter for now and use IPC
+        try {
+            remote.app.setBadgeCount(count);
+        } catch (e) {
+            console.error("Failed to set notification count", e);
+        }
+    }
+
+    supportsNotifications() : boolean {
+        return true;
+    }
+
+    maySendNotifications() : boolean {
+        return true;
+    }
+
+    displayNotification(title: string, msg: string, avatarUrl: string): Notification {
+        // Notifications in Electron use the HTML5 notification API
+        const notification = new global.Notification(
+            title,
+            {
+                body: msg,
+                icon: avatarUrl,
+                tag: "vector",
+                silent: true, // we play our own sounds
+            }
+        );
+
+        notification.onclick = function() {
+            dis.dispatch({
+                action: 'view_room',
+                room_id: room.roomId
+            });
+            global.focus();
+        };
+
+        return notification;
+    }
+
+    clearNotification(notif: Notification) {
+        notif.close();
+    }
+
+    pollForUpdate() {
+        // In electron we control the update process ourselves, since
+        // it needs to run in the main process, so we just run the timer
+        // loop in the main electron process instead.
+    }
+
+    installUpdate() {
+        // IPC to the main process to install the update, since quitAndInstall
+        // doesn't fire the before-quit event so the main process needs to know
+        // it should exit.
+        electron.ipcRenderer.send('install_update');
+    }
+}

src/vector/platform/index.js

@@ -16,8 +16,16 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+import ElectronPlatform from './ElectronPlatform';
 import WebPlatform from './WebPlatform';
 
-let Platform = WebPlatform;
+let Platform = null;
+
+if (window && window.process && window.process && window.process.type === 'renderer') {
+    // we're running inside electron
+    Platform = ElectronPlatform;
+} else {
+    Platform = WebPlatform;
+}
 
 export default Platform;