Maximize main window if monitor removed/changed resolution (#2486)

* Maximize main window if monitor removed/changed resolution

* Fix unit tests

* Add better handlers to support active screen changes

src/main/app/initialize.ts

@@ -3,7 +3,7 @@
 
 import path from 'path';
 
-import {app, ipcMain, session} from 'electron';
+import {app, ipcMain, screen, session} from 'electron';
 import installExtension, {REACT_DEVELOPER_TOOLS} from 'electron-devtools-installer';
 import isDev from 'electron-is-dev';
 import log from 'electron-log';
@@ -119,6 +119,8 @@ export async function initialize() {
         app.whenReady(),
     ]);
 
+    initializeScreenEventListeners();
+
     // no need to continue initializing if app is quitting
     if (global.willAppQuit) {
         return;
@@ -188,6 +190,11 @@ function initializeAppEventListeners() {
     app.on('will-finish-launching', handleAppWillFinishLaunching);
 }
 
+function initializeScreenEventListeners() {
+    screen.on('display-removed', WindowManager.displayRemoved);
+    screen.on('display-metrics-changed', WindowManager.displayMetricsChanged);
+}
+
 function initializeBeforeAppReady() {
     if (!Config.data) {
         log.error('No config loaded');