[gtk+] messagedialog: Respect the gtk-keynav-use-caret setting

[Matthias Clasen <matthiasc src gnome org>]

commit 92662828ba43c2d3507bb8f4dc253f2f429e91ae
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Mar 4 22:39:31 2016 -0500

    messagedialog: Respect the gtk-keynav-use-caret setting
    
    We used to always make the labels in message dialogs selectable,
    which is a bit problematic wrt. to keynav - the label can
    unexpectedly 'turn blue', which irritates some people.
    
    With the new gtk-keynav-use-caret setting, we can now only
    make the labels selectable when it is required for accessibilty
    reasons.

 gtk/gtkmessagedialog.c     |    7 +++++++
 gtk/ui/gtkmessagedialog.ui |    2 --
 2 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkmessagedialog.c b/gtk/gtkmessagedialog.c
index a242afd..ae6f5e5 100644
--- a/gtk/gtkmessagedialog.c
+++ b/gtk/gtkmessagedialog.c
@@ -310,6 +310,8 @@ gtk_message_dialog_init (GtkMessageDialog *dialog)
 {
   GtkMessageDialogPrivate *priv;
   GtkWidget *action_area;
+  GtkSettings *settings;
+  gboolean use_caret;
 
   dialog->priv = gtk_message_dialog_get_instance_private (dialog);
   priv = dialog->priv;
@@ -326,6 +328,11 @@ G_GNUC_BEGIN_IGNORE_DEPRECATIONS
   action_area = gtk_dialog_get_action_area (GTK_DIALOG (dialog));
 G_GNUC_END_IGNORE_DEPRECATIONS
   gtk_button_box_set_layout (GTK_BUTTON_BOX (action_area), GTK_BUTTONBOX_EXPAND);
+
+  settings = gtk_widget_get_settings (GTK_WIDGET (dialog));
+  g_object_get (settings, "gtk-keynav-use-caret", &use_caret, NULL);
+  gtk_label_set_selectable (GTK_LABEL (priv->label), use_caret);
+  gtk_label_set_selectable (GTK_LABEL (priv->secondary_label), use_caret);
 }
 
 static void
diff --git a/gtk/ui/gtkmessagedialog.ui b/gtk/ui/gtkmessagedialog.ui
index 8614543..32f1f71 100644
--- a/gtk/ui/gtkmessagedialog.ui
+++ b/gtk/ui/gtkmessagedialog.ui
@@ -33,7 +33,6 @@
                     <property name="halign">center</property>
                     <property name="valign">start</property>
                     <property name="wrap">1</property>
-                    <property name="selectable">1</property>
                     <property name="max-width-chars">60</property>
                   </object>
                   <packing>
@@ -47,7 +46,6 @@
                     <property name="halign">center</property>
                     <property name="valign">start</property>
                     <property name="wrap">1</property>
-                    <property name="selectable">1</property>
                     <property name="max-width-chars">60</property>
                   </object>
                   <packing>