[baobab/wip/vala: 38/46] Show a spinner while scanning.

[Stefano Facchini <sfacchini src gnome org>]

commit c0394d4c43f0551c5804fd21f67d4bd2792db4ec
Author: Paolo Borelli <pborelli gnome org>
Date:   Mon Jan 30 21:44:17 2012 +0100

    Show a spinner while scanning.
    
    Instead of showing it in the toolbar and show a frozen chart like we did
    in the old baobab, let's try to just put the spinner in the main chart
    area... seems to look nice enough with the scalable spinner icon used
    these days.

 data/baobab-main-window.ui |   12 ++++++++++++
 src/baobab-window.vala     |   20 ++++++++++++++++----
 2 files changed, 28 insertions(+), 4 deletions(-)
---
diff --git a/data/baobab-main-window.ui b/data/baobab-main-window.ui
index f0658da..4e42cb6 100644
--- a/data/baobab-main-window.ui
+++ b/data/baobab-main-window.ui
@@ -274,6 +274,18 @@
                     <property name="vexpand">True</property>
                   </object>
                 </child>
+                <child>
+                  <object class="GtkSpinner" id="spinner">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="hexpand">True</property>
+                    <property name="vexpand">True</property>
+                    <property name="margin_left">24</property>
+                    <property name="margin_right">24</property>
+                    <property name="margin_top">24</property>
+                    <property name="margin_bottom">24</property>
+                  </object>
+                </child>
               </object>
               <packing>
                 <property name="left_attach">0</property>
diff --git a/src/baobab-window.vala b/src/baobab-window.vala
index 83f48d6..3d4ff50 100644
--- a/src/baobab-window.vala
+++ b/src/baobab-window.vala
@@ -5,6 +5,7 @@ namespace Baobab {
 		Gtk.Notebook chart_notebook;
 		Chart rings_chart;
 		Chart treemap_chart;
+		Gtk.Spinner spinner;
 		Scanner? scanner;
 
 		static Gdk.Cursor busy_cursor;
@@ -46,6 +47,12 @@ namespace Baobab {
 			{ "collapse-all", false }
 		};
 
+		private enum ChartPage {
+			RINGS,
+			TREEMAP,
+			SPINNER
+		}
+
 		private enum DndTargets {
 			URI_LIST
 		}
@@ -74,6 +81,7 @@ namespace Baobab {
 			chart_notebook = builder.get_object ("chart-notebook") as Gtk.Notebook;
 			rings_chart = builder.get_object ("rings-chart") as Chart;
 			treemap_chart = builder.get_object ("treemap-chart") as Chart;
+			spinner = builder.get_object ("spinner") as Gtk.Spinner;
 
 			setup_treeview (builder);
 
@@ -99,10 +107,10 @@ namespace Baobab {
 		void on_chart_type_changed (SimpleAction action, Variant value) {
 			switch (value as string) {
 				case "rings":
-					chart_notebook.page = 0;
+					chart_notebook.page = ChartPage.RINGS;
 					break;
 				case "treemap":
-					chart_notebook.page = 1;
+					chart_notebook.page = ChartPage.TREEMAP;
 					break;
 				default:
 					return;
@@ -333,14 +341,18 @@ namespace Baobab {
 			if (busy) {
 				cursor = busy_cursor;
 				disable_drop ();
-				rings_chart.freeze_updates();
+				rings_chart.freeze_updates ();
 				treemap_chart.freeze_updates ();
 				(lookup_action ("active-chart") as SimpleAction).set_enabled (false);
+				chart_notebook.page = ChartPage.SPINNER;
+				spinner.start ();
 			} else {
 				enable_drop ();
-				rings_chart.thaw_updates();
+				rings_chart.thaw_updates ();
 				treemap_chart.thaw_updates ();
 				(lookup_action ("active-chart") as SimpleAction).set_enabled (true);
+				spinner.start ();
+				lookup_action ("active-chart").change_state (ui_settings.get_value ("active-chart"));
 			}
 
 			var window = get_window ();