themes: also need to be stored on main side

src/vs/workbench/electron-main/window.ts

@@ -136,7 +136,7 @@ export interface IWindowConfiguration extends env.ICommandLineArguments {
 export class VSCodeWindow {
 
 	public static menuBarHiddenKey = 'menuBarHidden';
-	public static themeStorageKey = 'theme'; // TODO@Ben this key is only used to find out if a window can be shown instantly because of light theme, remove once we have support for bg color
+	public static themeStorageKey = 'theme';
 
 	private static MIN_WIDTH = 200;
 	private static MIN_HEIGHT = 120;

src/vs/workbench/electron-main/windows.ts

@@ -328,6 +328,10 @@ export class WindowsManager {
 			if (broadcast.channel && broadcast.payload) {
 				env.log('IPC#vscode:broadcast', target, broadcast.channel, broadcast.payload);
 
+				// Handle specific events on main side
+				this.onBroadcast(broadcast.channel, broadcast.payload);
+
+				// Send to windows
 				if (target) {
 					const otherWindowsWithTarget = WindowsManager.WINDOWS.filter(w => w.id !== windowId && typeof w.openedWorkspacePath === 'string');
 					const directTargetMatch = otherWindowsWithTarget.filter(w => this.isPathEqual(target, w.openedWorkspacePath));
@@ -435,6 +439,14 @@ export class WindowsManager {
 		});
 	}
 
+	private onBroadcast(event: string, payload: any): void {
+
+		// Theme changes
+		if (event === 'vscode:changeTheme' && typeof payload === 'string') {
+			storage.setItem(window.VSCodeWindow.themeStorageKey, payload);
+		}
+	}
+
 	public reload(win: window.VSCodeWindow, cli?: env.ICommandLineArguments): void {
 
 		// Only reload when the window has not vetoed this