code to prevent creating a window that is a child of an nsIWidget that has already been destroyed

widget/src/gtk/nsGtkEventHandler.cpp

@@ -844,6 +844,8 @@ handle_gdk_event (GdkEvent *event, gpointer data)
 
       nsWindow *window = (nsWindow *)gtk_object_get_data (object, "nsWindow");
       GtkWidget *current_grab = gtk_grab_get_current();
+
+      // if there's a grab in progress, make sure to send it right to that widget.
       if (window->GrabInProgress()) {
         goto handle_as_superwin;
       }
@@ -881,7 +883,7 @@ handle_gdk_event (GdkEvent *event, gpointer data)
               handle_key_release_event (NULL, &event->key, window);
               break;
             default:
-              window->HandleEvent (event);
+              window->HandleGDKEvent (event);
             }
           return;
         }

widget/src/gtk/nsWidget.cpp

@@ -1258,27 +1258,6 @@ void nsWidget::InitEvent(nsGUIEvent& event, PRUint32 aEventType, nsPoint* aPoint
   //    mLastPoint.y = event.point.y;
 }
 
-void 
-nsWidget::HandleEvent(GdkEvent *event)
-{
-  switch (event->any.type)
-    {
-    case GDK_MOTION_NOTIFY:
-      OnMotionNotifySignal (&event->motion);
-      break;
-    case GDK_BUTTON_PRESS:
-    case GDK_2BUTTON_PRESS:
-    case GDK_3BUTTON_PRESS:
-      OnButtonPressSignal (&event->button);
-      break;
-    case GDK_BUTTON_RELEASE:
-      OnButtonReleaseSignal (&event->button);
-      break;
-    default:
-      break;
-    }
-}
-
 PRBool nsWidget::ConvertStatus(nsEventStatus aStatus)
 {
   switch(aStatus) {

widget/src/gtk/nsWidget.h

@@ -163,7 +163,6 @@ public:
     
   // Utility functions
 
-  void       HandleEvent(GdkEvent *event);
   PRBool     ConvertStatus(nsEventStatus aStatus);
   PRBool     DispatchMouseEvent(nsMouseEvent& aEvent);
   PRBool     DispatchStandardEvent(PRUint32 aMsg);

widget/src/gtk/nsWindow.cpp

@@ -26,6 +26,8 @@
 
 #include <gdk/gdkx.h>
 #include <gtk/gtkprivate.h>
+// XXX FTSO nsWebShell
+#include <gdk/gdkprivate.h>
 
 #include <X11/Xatom.h>   // For XA_STRING
 
@@ -198,7 +200,7 @@ NS_IMETHODIMP nsWindow::Destroy()
   if (PR_FALSE == mOnDestroyCalled) {
     nsWidget::OnDestroy();
   }
-  
+
   if (mMozArea) {
     /* destroy the moz area.  the superwin will be destroyed by that mozarea */
     gtk_widget_destroy(mMozArea);
@@ -832,6 +834,27 @@ nsWindow::InstallFocusOutSignal(GtkWidget * aWidget)
 				GTK_SIGNAL_FUNC(nsWindow::FocusOutSignal));
 }
 
+void 
+nsWindow::HandleGDKEvent(GdkEvent *event)
+{
+  switch (event->any.type)
+    {
+    case GDK_MOTION_NOTIFY:
+      OnMotionNotifySignal (&event->motion);
+      break;
+    case GDK_BUTTON_PRESS:
+    case GDK_2BUTTON_PRESS:
+    case GDK_3BUTTON_PRESS:
+      OnButtonPressSignal (&event->button);
+      break;
+    case GDK_BUTTON_RELEASE:
+      OnButtonReleaseSignal (&event->button);
+      break;
+    default:
+      break;
+    }
+}
+
 #endif /* USE_SUPERWIN */
 
 void
@@ -1171,10 +1194,21 @@ void * nsWindow::GetNativeData(PRUint32 aDataType)
 #ifdef USE_SUPERWIN
   if (aDataType == NS_NATIVE_WINDOW)
   {
-    if (mSuperWin)
+    if (mSuperWin) {
+      GdkWindowPrivate *private_window = (GdkWindowPrivate *)mSuperWin->bin_window;
+      if (private_window->destroyed == PR_TRUE) {
+        return NULL;
+      }
       return (void *)mSuperWin->bin_window;
+    }
   }
   else if (aDataType == NS_NATIVE_WIDGET) {
+    if (mSuperWin) {
+      GdkWindowPrivate *private_window = (GdkWindowPrivate *)mSuperWin->bin_window;
+      if (private_window->destroyed == PR_TRUE) {
+        return NULL;
+      }
+    }
     return (void *)mSuperWin;
   }
 #else
@@ -1986,7 +2020,6 @@ NS_IMETHODIMP nsWindow::Resize(PRInt32 aWidth, PRInt32 aHeight, PRBool aRepaint)
     }
     gdk_superwin_resize(mSuperWin, aWidth, aHeight);
   }
-  // XXX chris
   if (mIsToplevel || mListenForResizes) {
     //g_print("sending resize event\n");
     nsSizeEvent sevent;

widget/src/gtk/nsWindow.h

@@ -97,6 +97,7 @@ public:
   virtual void         OnFocusOutSignal(GdkEventFocus * aGdkFocusEvent);
   virtual void         InstallFocusInSignal(GtkWidget * aWidget);
   virtual void         InstallFocusOutSignal(GtkWidget * aWidget);
+  void                 HandleGDKEvent(GdkEvent *event);
 #endif /* USE_SUPERWIN */
 
   gint                 ConvertBorderStyles(nsBorderStyle bs);