Bug #121255. Hook up gtk2 to xremote. r=cls on the configure.in change

configure.in

@@ -2733,6 +2733,7 @@ gtk)
 
 gtk2)
     MOZ_ENABLE_GTK2=1
+    MOZ_ENABLE_XREMOTE=1
     TK_CFLAGS='$(MOZ_GTK2_CFLAGS)'
     TK_LIBS='$(MOZ_GTK2_LIBS)'
     AC_DEFINE(MOZ_WIDGET_GTK2)

widget/src/gtk2/Makefile.in

@@ -37,7 +37,8 @@ REQUIRES	= xpcom \
 		  string \
 		  gfx \
 		  dom \
-		  accessibility
+		  accessibility \
+		  xremoteservice
 
 CSRCS		= \
 		mozcontainer.c \
@@ -55,6 +56,7 @@ CPPSRCS		= \
 		nsCommonWidget.cpp \
 		nsLookAndFeel.cpp \
 		nsGtkKeyUtils.cpp \
+		nsGtkMozRemoteHelper.cpp \
 		$(NULL)
 
 SHARED_LIBRARY_LIBS = $(DIST)/lib/libxpwidgets_s.a

widget/src/gtk2/nsWidgetFactory.cpp

@@ -43,6 +43,7 @@
 #include "nsLookAndFeel.h"
 #include "nsWindow.h"
 #include "nsScrollbar.h"
+#include "nsGtkMozRemoteHelper.h"
 #ifdef IBMBIDI
 #include "nsBidiKeyboard.h"
 #endif
@@ -52,6 +53,7 @@ NS_GENERIC_FACTORY_CONSTRUCTOR(nsChildWindow)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsAppShell)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsLookAndFeel)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsBidiKeyboard)
+NS_GENERIC_FACTORY_CONSTRUCTOR(nsGtkXRemoteWidgetHelper)
 
 static
 nsresult nsHorizScrollbarConstructor (nsISupports *aOuter,
@@ -137,6 +139,10 @@ static const nsModuleComponentInfo components[] =
       NS_VERTSCROLLBAR_CID,
       "@mozilla.org/widgets/vertscroll/gtk;1",
       nsVertScrollbarConstructor },
+  { NS_IXREMOTEWIDGETHELPER_CLASSNAME,
+    NS_GTKXREMOTEWIDGETHELPER_CID,
+    NS_IXREMOTEWIDGETHELPER_CONTRACTID,
+    nsGtkXRemoteWidgetHelperConstructor },
 #ifdef IBMBIDI
     { "Gtk2 Bidi Keyboard",
       NS_BIDIKEYBOARD_CID,

widget/src/gtk2/nsWindow.cpp

@@ -45,6 +45,7 @@
 
 #include "nsGtkKeyUtils.h"
 #include "nsGtkCursors.h"
+#include "nsGtkMozRemoteHelper.h"
 
 #include <gtk/gtkwindow.h>
 #include <gdk/gdkx.h>
@@ -95,6 +96,8 @@ static gboolean visibility_notify_event_cb(GtkWidget *widget,
                                            GdkEventVisibility *event);
 static gboolean window_state_event_cb     (GtkWidget *widget,
                                            GdkEventWindowState *event);
+static gboolean property_notify_event_cb  (GtkWidget *widget,
+                                           GdkEventProperty *event);
 
 static PRBool                 gJustGotActivate = PR_FALSE;
 nsCOMPtr  <nsIRollupListener> gRollupListener;
@@ -1432,9 +1435,11 @@ nsWindow::NativeCreate(nsIWidget        *aParent,
         // we need to add this to the shell since versions of gtk
         // before 2.0.3 forgot to set property_notify events on the
         // shell window
-        gtk_widget_add_events(mShell, GDK_PROPERTY_NOTIFY);
+        gtk_widget_add_events(mShell, GDK_PROPERTY_CHANGE_MASK);
         g_signal_connect(G_OBJECT(mShell), "window_state_event",
                          G_CALLBACK(window_state_event_cb), NULL);
+        g_signal_connect(G_OBJECT(mShell), "property_notify_event",
+                         G_CALLBACK(property_notify_event_cb), NULL);
     }
 
     if (mContainer) {
@@ -2215,6 +2220,19 @@ window_state_event_cb (GtkWidget *widget, GdkEventWindowState *event)
     return FALSE;
 }
 
+/* static */
+gboolean
+property_notify_event_cb  (GtkWidget *widget, GdkEventProperty *event)
+{
+    nsIWidget *nswidget = (nsIWidget *)get_window_for_gtk_widget(widget);
+    if (!nswidget)
+        return FALSE;
+
+    nsGtkMozRemoteHelper::HandlePropertyChange(widget, event, nswidget);
+
+    return FALSE;
+}
+
 #ifdef ACCESSIBILITY
 /**
  * void