fixes microsoft#54877

sbatten · sbatten · commit 64c433bf2bd4 · 2018-07-29T21:05:17.000-07:00
diff --git a/src/vs/workbench/browser/parts/titlebar/titlebarPart.ts b/src/vs/workbench/browser/parts/titlebar/titlebarPart.ts
@@ -54,6 +54,7 @@ export class TitlebarPart extends Part implements ITitleService {
 	private appIcon: Builder;
 	private menubarPart: MenubarPart;
 	private menubar: Builder;
+	private resizer: Builder;
 
 	private pendingTitle: string;
 	private representedFileName: string;
@@ -334,12 +335,12 @@ export class TitlebarPart extends Part implements ITitleService {
 				this.windowService.closeWindow().then(null, errors.onUnexpectedError);
 			});
 
+			// Resizer
+			this.resizer = $(this.titleContainer).div({ class: 'resizer' });
+
 			const isMaximized = this.windowService.getConfiguration().maximized ? true : false;
 			this.onDidChangeMaximized(isMaximized);
 			this.windowService.onDidChangeMaximize(this.onDidChangeMaximized, this);
-
-			// Resizer
-			$(this.titleContainer).div({ class: 'resizer' });
 		}
 
 		// Since the title area is used to drag the window, we do not want to steal focus from the
@@ -357,16 +358,22 @@ export class TitlebarPart extends Part implements ITitleService {
 	}
 
 	private onDidChangeMaximized(maximized: boolean) {
-		if (!this.maxRestoreControl) {
-			return;
+		if (this.maxRestoreControl) {
+			if (maximized) {
+				this.maxRestoreControl.removeClass('window-maximize');
+				this.maxRestoreControl.addClass('window-unmaximize');
+			} else {
+				this.maxRestoreControl.removeClass('window-unmaximize');
+				this.maxRestoreControl.addClass('window-maximize');
+			}
 		}
 
-		if (maximized) {
-			this.maxRestoreControl.removeClass('window-maximize');
-			this.maxRestoreControl.addClass('window-unmaximize');
-		} else {
-			this.maxRestoreControl.removeClass('window-unmaximize');
-			this.maxRestoreControl.addClass('window-maximize');
+		if (this.resizer) {
+			if (maximized) {
+				this.resizer.hide();
+			} else {
+				this.resizer.show();
+			}
 		}
 	}
 
