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GtkColorEditor: Keep ref on pre-popup focus widget

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And ensure it's still visible before returning the keyboard focus to it.
Because of the extra ref, add a dispose handler that will ensure the
ref is lost (by popping down), although this should be already ensured
through other paths (eg. when the popup widget loses visibility).

This fixes a possible crash in dispose paths, where we might be restoring
focus on an already destroyed widget, and at a time where, if the toplevel
is being itself disposed, no new focus should be set.

https://bugzilla.gnome.org/show_bug.cgi?id=767849
This commit is contained in:
Carlos Garnacho 2016-06-21 13:57:20 +02:00
parent 3b98a2d935
commit f44b9ef1f0
1 changed files with 15 additions and 3 deletions
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18
gtk/gtkcoloreditor.c
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@ -175,8 +175,9 @@ dismiss_current_popup (GtkColorEditor *editor)
editor->priv->popup_position = 0;
if (editor->priv->popdown_focus)
{
gtk_widget_grab_focus (editor->priv->popdown_focus);
editor->priv->popdown_focus = NULL;
if (gtk_widget_is_visible (editor->priv->popdown_focus))
gtk_widget_grab_focus (editor->priv->popdown_focus);
g_clear_object (&editor->priv->popdown_focus);
}
}
}
@ -218,7 +219,7 @@ popup_edit (GtkWidget *widget,
{
dismiss_current_popup (editor);
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (editor));
editor->priv->popdown_focus = gtk_window_get_focus (GTK_WINDOW (toplevel));
g_set_object (&editor->priv->popdown_focus, gtk_window_get_focus (GTK_WINDOW (toplevel)));
editor->priv->current_popup = popup;
editor->priv->popup_position = position;
gtk_widget_show (popup);
@ -395,6 +396,16 @@ gtk_color_editor_init (GtkColorEditor *editor)
gtk_style_context_remove_class (gtk_widget_get_style_context (editor->priv->swatch), "activatable");
}
static void
gtk_color_editor_dispose (GObject *object)
{
GtkColorEditor *editor = GTK_COLOR_EDITOR (object);
dismiss_current_popup (editor);
G_OBJECT_CLASS (gtk_color_editor_parent_class)->dispose (object);
}
static void
gtk_color_editor_get_property (GObject *object,
guint prop_id,
@ -463,6 +474,7 @@ gtk_color_editor_class_init (GtkColorEditorClass *class)
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
object_class->dispose = gtk_color_editor_dispose;
object_class->get_property = gtk_color_editor_get_property;
object_class->set_property = gtk_color_editor_set_property;