[gitg] Populate the navigation tree model internally

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 47f6acdd33447bb2fe05f3e2fd699aeadc41717d
Author: Techlive Zheng <techlivezheng gmail com>
Date:   Thu May 23 20:46:27 2013 +0800

    Populate the navigation tree model internally

 plugins/history/gitg-history-navigation.vala |   13 +++++++------
 plugins/history/gitg-history.vala            |    2 +-
 2 files changed, 8 insertions(+), 7 deletions(-)
---
diff --git a/plugins/history/gitg-history-navigation.vala b/plugins/history/gitg-history-navigation.vala
index 5d76951..eeb68d1 100644
--- a/plugins/history/gitg-history-navigation.vala
+++ b/plugins/history/gitg-history-navigation.vala
@@ -73,10 +73,11 @@ namespace GitgHistory
                private SList<Gtk.TreeIter?> d_parents;
                private uint d_sections;
                private Activated[] d_callbacks;
+               private Gitg.Repository d_repository;
 
                public signal void ref_activated(Gitg.Ref? r);
 
-               construct
+               public Navigation(Gitg.Repository repo)
                {
                        set_column_types({typeof(string),
                                          typeof(string),
@@ -88,6 +89,8 @@ namespace GitgHistory
 
                        d_callbacks = new Activated[100];
                        d_callbacks.length = 0;
+                       d_repository = repo;
+                       populate(d_repository);
                }
 
                private static int sort_refs(Gitg.Ref a, Gitg.Ref b)
@@ -100,7 +103,7 @@ namespace GitgHistory
                        return a.parsed_name.remote_branch.ascii_casecmp(b.parsed_name.remote_branch);
                }
 
-               public void populate(Gitg.Repository repo)
+               private void populate(Gitg.Repository repo)
                {
                        List<Gitg.Ref> branches = new List<Gitg.Ref>();
                        List<Gitg.Ref> tags = new List<Gitg.Ref>();
@@ -411,11 +414,8 @@ namespace GitgHistory
 
        public class NavigationView : Gtk.TreeView
        {
-               construct
+               private void build_ui()
                {
-                       var model = new Navigation();
-                       set_model(model);
-
                        var col = new Gtk.TreeViewColumn();
 
                        var padcell = new Gtk.CellRendererText();
@@ -486,6 +486,7 @@ namespace GitgHistory
                public new Navigation model
                {
                        get { return base.get_model() as Navigation; }
+                       set { set_model(value); build_ui(); }
                }
 
                private bool select_first_in(Gtk.TreeIter? parent, bool seldef)
diff --git a/plugins/history/gitg-history.vala b/plugins/history/gitg-history.vala
index f970071..5794a62 100644
--- a/plugins/history/gitg-history.vala
+++ b/plugins/history/gitg-history.vala
@@ -182,7 +182,7 @@ namespace GitgHistory
                        d_main = ret["paned_views"] as Gtk.Paned;
 
                        d_navigation = ret["navigation_view"] as GitgHistory.NavigationView;
-                       d_navigation.model.populate(application.repository);
+                       d_navigation.model = new Navigation(application.repository);
                        d_navigation.model.ref_activated.connect((r) => {
                                on_ref_activated(d_navigation.model, r);
                        });