Fixing Bug #274872: "Activate host app on automatic update when when …

…host runs in background"

SUAutomaticUpdateDriver.m

@@ -16,6 +16,16 @@ @implementation SUAutomaticUpdateDriver
 - (void)unarchiverDidFinish:(SUUnarchiver *)ua
 {
 	alert = [[SUAutomaticUpdateAlert alloc] initWithAppcastItem:updateItem host:host delegate:self];
+
+	// If the app is a menubar app or the like, we need to focus it first and alter the
+	// update prompt to behave like a normal window. Otherwise if the window were hidden
+	// there may be no way for the application to be activated to make it visible again.
+	if ([host isBackgroundApplication])
+	{
+		[[alert window] setHidesOnDeactivate:NO];
+		[NSApp activateIgnoringOtherApps:YES];
+	}		
+
 	if ([NSApp isActive])
 		[[alert window] makeKeyAndOrderFront:self];
 	else