[gitg/vala] Update history to implement GitgExt.UIElement and GitgExt.ObjectSelection

[Jesse van den Kieboom <jessevdk src gnome org>]

commit c97ab747951cd673bce990e9599fb7c3af5ee442
Author: Jesse van den Kieboom <jesse vandenkieboom epfl ch>
Date:   Tue Jul 17 09:54:00 2012 +0200

    Update history to implement GitgExt.UIElement and GitgExt.ObjectSelection

 plugins/history/gitg-history.vala |   24 ++++++++++++++++++++++--
 1 files changed, 22 insertions(+), 2 deletions(-)
---
diff --git a/plugins/history/gitg-history.vala b/plugins/history/gitg-history.vala
index c840b5b..99099df 100644
--- a/plugins/history/gitg-history.vala
+++ b/plugins/history/gitg-history.vala
@@ -25,9 +25,9 @@ namespace GitgHistory
 	/* The main history view. This view shows the equivalent of git log, but
 	 * in a nice way with lanes, merges, ref labels etc.
 	 */
-	public class View : Object, GitgExt.View
+	public class View : Object, GitgExt.UIElement, GitgExt.View, GitgExt.ObjectSelection
 	{
-		public GitgExt.Application? application { owned get; construct; }
+		public GitgExt.Application? application { owned get; construct set; }
 
 		private Gtk.TreeView d_view;
 		private GitgGtk.CommitModel? d_model;
@@ -39,6 +39,17 @@ namespace GitgHistory
 			owned get { return "/org/gnome/gitg/Views/History"; }
 		}
 
+		public void foreach_selected(GitgExt.ForeachObjectSelectionFunc func)
+		{
+			bool breakit = false;
+			d_view.get_selection().selected_foreach((model, path, iter) => {
+				if (!breakit)
+				{
+					breakit = !func(d_model.commit_from_iter(iter));
+				}
+			});
+		}
+
 		construct
 		{
 			d_model = new GitgGtk.CommitModel(application.repository);
@@ -107,6 +118,10 @@ namespace GitgHistory
 			d_view = ret["commit_list_view"] as Gtk.TreeView;
 			d_view.model = d_model;
 
+			d_view.get_selection().changed.connect((sel) => {
+				selection_changed();
+			});
+
 			d_main = ret["scrolled_window_commit_list"] as Gtk.Widget;
 		}
 
@@ -173,6 +188,11 @@ namespace GitgHistory
 
 			return ret;
 		}
+
+		public bool is_enabled()
+		{
+			return true;
+		}
 	}
 }