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ComboBox: Do not select item before menu realised

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For a menu mode CB with wrap_width == 0 and an active item, that item is
selected in gtk_combo_box_menu_popup. Selection causes the MenuShell to
activate and hence take a grab. This was done before the menu was popped
up. A patch distributed in Debian sid - after being proposed on our BZ -
revealed that on the 1st popup of any such ComboBox, within grab_add,
the MenuShell's toplevel's GdkWindow is NULL. This causes a Gdk-CRITICAL
assertion fail on the 1st time opening any such CB, on Debian and if
that patch were merged to GTK+. By selecting after popup, we ensure the
MenuShell is realised before its grab_add and so avoid the critical.

https://bugzilla.gnome.org/show_bug.cgi?id=771242
This commit is contained in:
Daniel Boles 2016-12-01 12:38:43 +00:00
parent a72dbeba06
commit e723fd6a23
1 changed files with 6 additions and 3 deletions
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9
gtk/gtkcombobox.c
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@ -1702,6 +1702,7 @@ gtk_combo_box_menu_popup (GtkComboBox *combo_box,
gint rect_anchor_dy = -2;
gint child_height;
GtkWidget *active;
GtkWidget *select;
GtkWidget *child;
GList *i;
@ -1761,10 +1762,9 @@ gtk_combo_box_menu_popup (GtkComboBox *combo_box,
{
/* FIXME handle nested menus better */
active = gtk_menu_get_active (GTK_MENU (priv->popup_widget));
select = active;
if (active)
gtk_menu_shell_select_item (GTK_MENU_SHELL (priv->popup_widget), active);
else
if (!active)
{
for (i = GTK_MENU_SHELL (priv->popup_widget)->priv->children; i && !active; i = i->next)
{
@ -1808,6 +1808,9 @@ gtk_combo_box_menu_popup (GtkComboBox *combo_box,
GDK_GRAVITY_WEST,
GDK_GRAVITY_NORTH_WEST,
trigger_event);
if (select)
gtk_menu_shell_select_item (GTK_MENU_SHELL (priv->popup_widget), select);
}
}