Add listener for the tab location.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38067 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/app/Desktop.cpp

@@ -1360,6 +1360,8 @@ Desktop::SetWindowTabLocation(Window* window, float location)
 	if (changed)
 		_RebuildAndRedrawAfterWindowChange(window, dirty);
 
+	InvokeSetWindowTabLocation(window, location);
+
 	return changed;
 }
 

src/servers/app/DesktopListener.cpp

@@ -187,6 +187,18 @@ DesktopObservable::InvokeSendWindowBehind(Window* window, Window* behindOf)
 }
 
 
+void
+DesktopObservable::InvokeSetWindowTabLocation(Window* window, float location)
+{
+	if (fWeAreInvoking)
+		return;
+	InvokeGuard invokeGuard(fWeAreInvoking);
+
+	FOR_ALL_DESKTOP_LISTENER
+		listener->SetWindowTabLocation(window, location);
+}
+
+
 bool
 DesktopObservable::InvokeSetDecoratorSettings(Window* window,
 	const BMessage& settings)

src/servers/app/DesktopListener.h

@@ -51,6 +51,9 @@ public:
 	virtual void				MinimizeWindow(Window* window,
 									bool minimize) = 0;
 
+	virtual void				SetWindowTabLocation(Window* window,
+									float location) = 0;
+
 	virtual bool				SetDecoratorSettings(Window* window,
 									const BMessage& settings) = 0;
 	virtual void				GetDecoratorSettings(Window* window,
@@ -94,6 +97,9 @@ public:
 		void				InvokeHideWindow(Window* window);
 		void				InvokeMinimizeWindow(Window* window, bool minimize);
 
+		void				InvokeSetWindowTabLocation(Window* window,
+								float location);
+
 		bool				InvokeSetDecoratorSettings(Window* window,
 								const BMessage& settings);
 		void				InvokeGetDecoratorSettings(Window* window,