[gtk+] gtkwidget: Do not listen to notifications from nonexistent properties

[Carlos Garnacho <carlosg src gnome org>]

commit 259611a87c0d31741fcf45fca745643c5a1d5dc2
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Sep 14 17:33:23 2015 +0200

    gtkwidget: Do not listen to notifications from nonexistent properties
    
    The GtkEventController event mask is private, and set early by GtkGesture
    implementations. Being this private data, there is no corresponding
    property, so this code is a no-op, there is just no need to listen to
    changes there.

 gtk/gtkwidget.c |   13 -------------
 1 files changed, 0 insertions(+), 13 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 17cd274..7f39e35 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -478,7 +478,6 @@ typedef struct {
 
 typedef struct {
   GtkEventController *controller;
-  guint evmask_notify_id;
   guint grab_notify_id;
   guint sequence_state_changed_id;
 } EventControllerData;
@@ -17114,14 +17113,6 @@ _gtk_widget_update_evmask (GtkWidget *widget)
 }
 
 static void
-event_controller_notify_event_mask (GtkEventController *controller,
-                                    GParamSpec         *pspec,
-                                    GtkWidget          *widget)
-{
-  _gtk_widget_update_evmask (widget);
-}
-
-static void
 event_controller_sequence_state_changed (GtkGesture            *gesture,
                                          GdkEventSequence      *sequence,
                                          GtkEventSequenceState  state,
@@ -17186,9 +17177,6 @@ _gtk_widget_add_controller (GtkWidget          *widget,
 
   data = g_new0 (EventControllerData, 1);
   data->controller = controller;
-  data->evmask_notify_id =
-    g_signal_connect (controller, "notify::event-mask",
-                      G_CALLBACK (event_controller_notify_event_mask), widget);
   data->grab_notify_id =
     g_signal_connect (widget, "grab-notify",
                       G_CALLBACK (event_controller_grab_notify), data);
@@ -17226,7 +17214,6 @@ _gtk_widget_remove_controller (GtkWidget          *widget,
   if (g_signal_handler_is_connected (widget, data->grab_notify_id))
     g_signal_handler_disconnect (widget, data->grab_notify_id);
 
-  g_signal_handler_disconnect (data->controller, data->evmask_notify_id);
   g_signal_handler_disconnect (data->controller, data->sequence_state_changed_id);
   data->controller = NULL;
 }