Add function to find a window in the app server by the client looper port id. Need this for the stacking api e.g. to stack window x on window y.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38168 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/app/Desktop.cpp

@@ -2484,6 +2484,18 @@ Desktop::AllWindows()
 }
 
 
+Window*
+Desktop::WindowForClientLooperPort(port_id port)
+{
+	for (Window* window = fAllWindows.FirstWindow(); window != NULL;
+			window = window->NextWindow(kAllWindowList)) {
+		if (window->ServerWindow()->ClientLooperPort() == port)
+			return window;
+	}
+	return NULL;
+}
+
+
 WindowList&
 Desktop::_Windows(int32 index)
 {

src/servers/app/Desktop.h

@@ -260,6 +260,8 @@ public:
 			WindowList&			CurrentWindows();
 			WindowList&			AllWindows();
 
+			Window*				WindowForClientLooperPort(port_id port);
+
 private:
 			WindowList&			_Windows(int32 index);