[gitg] Set up all the tree models at the begining

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 0a4ec605a1053557c8191f4ff9e9d2c9c9d7feb8
Author: Techlive Zheng <techlivezheng gmail com>
Date:   Sat Jun 1 02:02:24 2013 +0800

    Set up all the tree models at the begining

 plugins/history/gitg-history.vala |   16 +++++++++-------
 1 files changed, 9 insertions(+), 7 deletions(-)
---
diff --git a/plugins/history/gitg-history.vala b/plugins/history/gitg-history.vala
index e5be030..b743eb7 100644
--- a/plugins/history/gitg-history.vala
+++ b/plugins/history/gitg-history.vala
@@ -29,6 +29,7 @@ namespace GitgHistory
 
                public GitgExt.Application? application { owned get; construct set; }
 
+               private Navigation? d_navigation_model;
                private GitgGtk.CommitModel? d_commit_list_model;
                private Gee.HashSet<Ggit.OId> d_selected;
                private ulong d_insertsig;
@@ -71,12 +72,18 @@ namespace GitgHistory
 
                        d_selected = new Gee.HashSet<Ggit.OId>((Gee.HashDataFunc<Ggit.OId>)Ggit.OId.hash, 
(Gee.EqualDataFunc<Ggit.OId>)Ggit.OId.equal);
 
+                       d_navigation_model = new Navigation(application.repository);
+                       d_navigation_model.ref_activated.connect((r) => {
+                               on_ref_activated(d_navigation_model, r);
+                       });
+
                        d_commit_list_model = new GitgGtk.CommitModel(application.repository);
                        d_commit_list_model.started.connect(on_commit_model_started);
                        d_commit_list_model.finished.connect(on_commit_model_finished);
 
                        update_sort_mode();
 
+                       application.bind_property("repository", d_navigation_model, "repository", 
BindingFlags.DEFAULT);
                        application.bind_property("repository", d_commit_list_model, "repository", 
BindingFlags.DEFAULT);
 
                        application.notify["repository"].connect((a, r) => {
@@ -179,7 +186,7 @@ namespace GitgHistory
 
                public void reload()
                {
-                       d_navigation.model.reload();
+                       d_navigation_model.reload();
                        d_navigation.expand_all();
                        d_navigation.select_first();
                }
@@ -201,12 +208,7 @@ namespace GitgHistory
                        d_stack_panel = ret["stack_panel"] as Gtk.Stack;
 
                        d_navigation = ret["navigation_view"] as GitgHistory.NavigationView;
-                       d_navigation.model = new Navigation(application.repository);
-                       d_navigation.model.ref_activated.connect((r) => {
-                               on_ref_activated(d_navigation.model, r);
-                       });
-
-                       application.bind_property("repository", d_navigation.model, "repository", 
BindingFlags.DEFAULT);
+                       d_navigation.model = d_navigation_model;
 
                        d_navigation.set_show_expanders(d_navigation.model.show_expanders);
                        if (d_navigation.model.show_expanders)