[dconf-editor] Named TreeSelection.

[Arnaud Bonatti <arnaudb src gnome org>]

commit fafd3e69835c6a4a38511c38081253c64334c411
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sun May 10 18:25:03 2015 +0200

    Named TreeSelection.

 editor/dconf-editor.ui   |    5 +++++
 editor/dconf-window.vala |   16 ++++++++--------
 2 files changed, 13 insertions(+), 8 deletions(-)
---
diff --git a/editor/dconf-editor.ui b/editor/dconf-editor.ui
index 5e5c90a..51a8ae1 100644
--- a/editor/dconf-editor.ui
+++ b/editor/dconf-editor.ui
@@ -37,6 +37,11 @@
                         </child>
                       </object>
                     </child>
+                    <child internal-child="selection">
+                      <object class="GtkTreeSelection" id="dir_tree_selection">
+                        <signal name="changed" handler="dir_selected_cb"/>
+                      </object>
+                    </child>
                   </object>
                 </child>
               </object>
diff --git a/editor/dconf-window.vala b/editor/dconf-window.vala
index 122f282..1e4eba4 100644
--- a/editor/dconf-window.vala
+++ b/editor/dconf-window.vala
@@ -24,6 +24,8 @@ class DConfWindow : ApplicationWindow
     private SettingsModel model;
     [GtkChild]
     private TreeView dir_tree_view;
+    [GtkChild]
+    private TreeSelection dir_tree_selection;
 
     private TreeView key_tree_view;
     [GtkChild]
@@ -73,24 +75,22 @@ class DConfWindow : ApplicationWindow
         model = new SettingsModel ();
         dir_tree_view.set_model (model);
 
-        TreeSelection selection = dir_tree_view.get_selection ();
-        selection.changed.connect (dir_selected_cb);
-
         TreeIter iter;
         if (model.get_iter_first (out iter))
-            selection.select_iter (iter);
+            dir_tree_selection.select_iter (iter);
     }
 
     /*\
     * * Dir TreeView
     \*/
 
+    [GtkCallback]
     private void dir_selected_cb ()
     {
         KeyModel? key_model = null;
 
         TreeIter iter;
-        if (dir_tree_view.get_selection ().get_selected (null, out iter))
+        if (dir_tree_selection.get_selected (null, out iter))
             key_model = model.get_directory (iter).key_model;
 
         key_tree_view.set_model (key_model);
@@ -259,7 +259,7 @@ class DConfWindow : ApplicationWindow
         TreeIter iter;
         TreeIter key_iter = TreeIter ();
         var have_key_iter = false;
-        if (dir_tree_view.get_selection ().get_selected (null, out iter))
+        if (dir_tree_selection.get_selected (null, out iter))
         {
             if (key_tree_view.get_selection ().get_selected (null, out key_iter))
             {
@@ -284,7 +284,7 @@ class DConfWindow : ApplicationWindow
                 if (!on_first_directory && dir.name.index_of (search_entry.text) >= 0)
                 {
                     dir_tree_view.expand_to_path (model.get_path (iter));
-                    dir_tree_view.get_selection ().select_iter (iter);
+                    dir_tree_selection.select_iter (iter);
                     dir_tree_view.scroll_to_cell (model.get_path (iter), null, false, 0, 0);
                     return;
                 }
@@ -300,7 +300,7 @@ class DConfWindow : ApplicationWindow
                     if (key_matches (key, search_entry.text))
                     {
                         dir_tree_view.expand_to_path (model.get_path (iter));
-                        dir_tree_view.get_selection ().select_iter (iter);
+                        dir_tree_selection.select_iter (iter);
                         dir_tree_view.scroll_to_cell (model.get_path (iter), null, false, 0, 0);
                         key_tree_view.get_selection ().select_iter (key_iter);
                         key_tree_view.scroll_to_cell (dir.key_model.get_path (key_iter), null, false, 0, 0);