[gtk+] ScrolledWindow: Fix non-disconnection of handlers

[Daniel Boles <dboles src gnome org>]

commit ceb09e4c8d593165c4086c4def431c47dad03175
Author: Daniel Boles <dboles src gnome org>
Date:   Thu Aug 31 23:18:46 2017 +0100

    ScrolledWindow: Fix non-disconnection of handlers
    
    • Use disconnect_by_data() to catch both _adjustment_changed() and now
      _adjustment_value_changed(), as the latter had been missed until now.
    
    • Also disconnect from indicator_value_changed(), which was not done in
      destroy() due to indicator_reset() and remove_indicator() disagreeing.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=775074

 gtk/gtkscrolledwindow.c |   41 +++++++++++++++++++++++++++--------------
 1 files changed, 27 insertions(+), 14 deletions(-)
---
diff --git a/gtk/gtkscrolledwindow.c b/gtk/gtkscrolledwindow.c
index a30ee06..99245c7 100644
--- a/gtk/gtkscrolledwindow.c
+++ b/gtk/gtkscrolledwindow.c
@@ -1995,6 +1995,7 @@ gtk_scrolled_window_set_hadjustment (GtkScrolledWindow *scrolled_window,
   GtkWidget *child;
 
   g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
+
   if (hadjustment)
     g_return_if_fail (GTK_IS_ADJUSTMENT (hadjustment));
   else
@@ -2018,13 +2019,14 @@ gtk_scrolled_window_set_hadjustment (GtkScrolledWindow *scrolled_window,
       if (old_adjustment == hadjustment)
        return;
 
-      g_signal_handlers_disconnect_by_func (old_adjustment,
-                                           gtk_scrolled_window_adjustment_changed,
-                                           scrolled_window);
+      g_signal_handlers_disconnect_by_data (old_adjustment, scrolled_window);
+
       gtk_adjustment_enable_animation (old_adjustment, NULL, 0);
       gtk_scrollbar_set_adjustment (GTK_SCROLLBAR (priv->hscrollbar), hadjustment);
     }
+
   hadjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (priv->hscrollbar));
+
   g_signal_connect (hadjustment,
                     "changed",
                    G_CALLBACK (gtk_scrolled_window_adjustment_changed),
@@ -2033,6 +2035,7 @@ gtk_scrolled_window_set_hadjustment (GtkScrolledWindow *scrolled_window,
                     "value-changed",
                    G_CALLBACK (gtk_scrolled_window_adjustment_value_changed),
                    scrolled_window);
+
   gtk_scrolled_window_adjustment_changed (hadjustment, scrolled_window);
   gtk_scrolled_window_adjustment_value_changed (hadjustment, scrolled_window);
 
@@ -2042,6 +2045,7 @@ gtk_scrolled_window_set_hadjustment (GtkScrolledWindow *scrolled_window,
 
   if (gtk_widget_should_animate (GTK_WIDGET (scrolled_window)))
     gtk_adjustment_enable_animation (hadjustment, gtk_widget_get_frame_clock (GTK_WIDGET (scrolled_window)), 
ANIMATION_DURATION);
+
   g_object_notify_by_pspec (G_OBJECT (scrolled_window), properties[PROP_HADJUSTMENT]);
 }
 
@@ -2061,6 +2065,7 @@ gtk_scrolled_window_set_vadjustment (GtkScrolledWindow *scrolled_window,
   GtkWidget *child;
 
   g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
+
   if (vadjustment)
     g_return_if_fail (GTK_IS_ADJUSTMENT (vadjustment));
   else
@@ -2084,13 +2089,14 @@ gtk_scrolled_window_set_vadjustment (GtkScrolledWindow *scrolled_window,
       if (old_adjustment == vadjustment)
        return;
 
-      g_signal_handlers_disconnect_by_func (old_adjustment,
-                                           gtk_scrolled_window_adjustment_changed,
-                                           scrolled_window);
+      g_signal_handlers_disconnect_by_data (old_adjustment, scrolled_window);
+
       gtk_adjustment_enable_animation (old_adjustment, NULL, 0);
       gtk_scrollbar_set_adjustment (GTK_SCROLLBAR (priv->vscrollbar), vadjustment);
     }
+
   vadjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (priv->vscrollbar));
+
   g_signal_connect (vadjustment,
                     "changed",
                    G_CALLBACK (gtk_scrolled_window_adjustment_changed),
@@ -2099,6 +2105,7 @@ gtk_scrolled_window_set_vadjustment (GtkScrolledWindow *scrolled_window,
                     "value-changed",
                    G_CALLBACK (gtk_scrolled_window_adjustment_value_changed),
                    scrolled_window);
+
   gtk_scrolled_window_adjustment_changed (vadjustment, scrolled_window);
   gtk_scrolled_window_adjustment_value_changed (vadjustment, scrolled_window);
 
@@ -2519,17 +2526,22 @@ gtk_scrolled_window_destroy (GtkWidget *widget)
 
   if (priv->hscrollbar)
     {
-      g_signal_handlers_disconnect_by_func (gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (priv->hscrollbar)),
-                                           gtk_scrolled_window_adjustment_changed,
-                                           scrolled_window);
+      GtkAdjustment *hadjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (priv->hscrollbar));
+
+      g_signal_handlers_disconnect_by_data (hadjustment, scrolled_window);
+      g_signal_handlers_disconnect_by_data (hadjustment, &priv->hindicator);
+
       gtk_widget_unparent (priv->hscrollbar);
       priv->hscrollbar = NULL;
     }
+
   if (priv->vscrollbar)
     {
-      g_signal_handlers_disconnect_by_func (gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (priv->vscrollbar)),
-                                           gtk_scrolled_window_adjustment_changed,
-                                           scrolled_window);
+      GtkAdjustment *vadjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (priv->vscrollbar));
+
+      g_signal_handlers_disconnect_by_data (vadjustment, scrolled_window);
+      g_signal_handlers_disconnect_by_data (vadjustment, &priv->vindicator);
+
       gtk_widget_unparent (priv->vscrollbar);
       priv->vscrollbar = NULL;
     }
@@ -3905,10 +3917,11 @@ remove_indicator (GtkScrolledWindow *scrolled_window,
   indicator->scrollbar = NULL;
 
   context = gtk_widget_get_style_context (scrollbar);
+  gtk_style_context_remove_class (context, "overlay-indicator");
+
   adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (scrollbar));
+  g_signal_handlers_disconnect_by_data (adjustment, indicator);
 
-  gtk_style_context_remove_class (context, "overlay-indicator");
-  g_signal_handlers_disconnect_by_func (adjustment, indicator_value_changed, indicator);
   if (indicator->conceil_timer)
     {
       g_source_remove (indicator->conceil_timer);