*fix* modal windows with hidden parent or no parent are added to the taskbar

git-svn-id: http://tint2.googlecode.com/svn/trunk@212 121b4492-b84c-0410-8b4c-0d4edfb3f3cc

src/util/window.c

@@ -33,6 +33,7 @@
 #include "window.h"
 #include "server.h"
 #include "panel.h"
+#include "taskbar.h"
 
 
 
@@ -86,10 +87,13 @@ int window_is_hidden (Window win)
 			return 1;
 		}
 		if (at[i] == server.atom._NET_WM_STATE_MODAL) {
+			// do not add modal windows if the transient window is already in the taskbar
+			if ( XGetTransientForHint(server.dsp, win, &window) && task_get_task(window) ) {
 				XFree(at);
 				return 1;
 			}
 		}
+	}
 	XFree(at);
 
 	at = server_get_property (win, server.atom._NET_WM_WINDOW_TYPE, XA_ATOM, &count);