[baobab/wip/vala: 21/53] Start to implement set_busy.

[Stefano Facchini <sfacchini src gnome org>]

commit de0b64dfdc0512f0d3cd7cfaf74c84f43e4cee76
Author: Paolo Borelli <pborelli gnome org>
Date:   Fri Jan 6 12:53:25 2012 +0100

    Start to implement set_busy.
    
    Note that since the scanner is async we will actually need to wire this
    up to a a "running" state of the scanner itself.

 data/baobab-main-window.ui |    2 +-
 src/baobab-window.vala     |   51 +++++++++++++++++++++++++++++++++----------
 2 files changed, 40 insertions(+), 13 deletions(-)
---
diff --git a/data/baobab-main-window.ui b/data/baobab-main-window.ui
index e9a9d24..a259707 100644
--- a/data/baobab-main-window.ui
+++ b/data/baobab-main-window.ui
@@ -300,7 +300,7 @@
               </object>
             </child>
             <child>
-              <object class="BaobabTreemap" id="treemap">
+              <object class="BaobabTreemap" id="treemap-chart">
                 <property name="visible">True</property>
               </object>
             </child>
diff --git a/src/baobab-window.vala b/src/baobab-window.vala
index 3b3a377..0cd0144 100644
--- a/src/baobab-window.vala
+++ b/src/baobab-window.vala
@@ -1,10 +1,13 @@
 namespace Baobab {
 	public class Window : Gtk.ApplicationWindow {
 		Gtk.TreeView treeview;
+		Gtk.Widget chart_type_combo;
 		Chart rings_chart;
-		Chart treemap;
+		Chart treemap_chart;
 		Scanner? scanner;
 
+		static Gdk.Cursor busy_cursor;
+
 		private const GLib.ActionEntry[] action_entries = {
 			{ "scan-home",       on_scan_home_activate       },
 			{ "scan-filesystem", on_scan_filesystem_activate },
@@ -25,6 +28,8 @@ namespace Baobab {
 		public Window (Application app) {
 			Object (application: app);
 
+			busy_cursor = new Gdk.Cursor (Gdk.CursorType.WATCH);
+
 			add_action_entries (action_entries, this);
 
 			// Build ourselves.
@@ -36,14 +41,14 @@ namespace Baobab {
 			}
 
 			// Cache some objects from the builder.
+			chart_type_combo = builder.get_object ("chart-type-combo") as Gtk.Widget;
 			rings_chart = builder.get_object ("rings-chart") as Chart;
-			treemap = builder.get_object ("treemap") as Chart;
+			treemap_chart = builder.get_object ("treemap-chart") as Chart;
 			treeview = builder.get_object ("treeview") as Gtk.TreeView;
 
 			var ui_settings = Application.get_ui_settings ();
 
 			// Setup the logic for switching between the chart types.
-			var chart_type_combo = builder.get_object ("chart-type-combo");
 			var charts_notebook = builder.get_object ("chart-notebook");
 			chart_type_combo.bind_property ("active", charts_notebook, "page", BindingFlags.SYNC_CREATE);
 			ui_settings.bind ("active-chart", chart_type_combo, "active-id", SettingsBindFlags.GET_NO_CHANGES);
@@ -147,6 +152,28 @@ namespace Baobab {
 			dialog.destroy ();
 		}
 
+		void set_busy (bool busy) {
+			Gdk.Cursor? cursor = null;
+
+			if (busy) {
+				cursor = busy_cursor;
+				disable_drop ();
+				rings_chart.freeze_updates();
+				treemap_chart.freeze_updates ();
+				chart_type_combo.set_sensitive (false);
+			} else {
+				enable_drop ();
+				rings_chart.thaw_updates();
+				treemap_chart.thaw_updates ();
+				chart_type_combo.set_sensitive (true);
+			}
+
+			var window = get_window ();
+			if (window != null) {
+				window.set_cursor (cursor);
+			}
+		}
+
 		public bool check_dir (File directory) {
 			if (Application.is_excluded_location (directory)) {
 				message("", _("Cannot check an excluded folder!"), Gtk.MessageType.INFO);
@@ -184,13 +211,13 @@ namespace Baobab {
 			}
 
 			model.bind_property ("max-depth", rings_chart, "max-depth", BindingFlags.SYNC_CREATE);
-			model.bind_property ("max-depth", treemap, "max-depth", BindingFlags.SYNC_CREATE);
-			treemap.set_model_with_columns (model,
-			                                Scanner.Columns.DISPLAY_NAME,
-			                                Scanner.Columns.SIZE,
-			                                Scanner.Columns.PARSE_NAME,
-			                                Scanner.Columns.PERCENT,
-			                                Scanner.Columns.ELEMENTS, null);
+			model.bind_property ("max-depth", treemap_chart, "max-depth", BindingFlags.SYNC_CREATE);
+			treemap_chart.set_model_with_columns (model,
+			                                      Scanner.Columns.DISPLAY_NAME,
+			                                      Scanner.Columns.SIZE,
+			                                      Scanner.Columns.PARSE_NAME,
+			                                      Scanner.Columns.PERCENT,
+			                                      Scanner.Columns.ELEMENTS, null);
 			rings_chart.set_model_with_columns (model,
 			                                    Scanner.Columns.DISPLAY_NAME,
 			                                    Scanner.Columns.SIZE,
@@ -204,14 +231,14 @@ namespace Baobab {
 				return;
 			}
 
-			disable_drop ();
+			set_busy (true);
 
 			scanner = new ThreadedScanner ();
 			scanner.scan (directory);
 
 			set_model (scanner);
 
-			enable_drop ();
+			set_busy (false);
 		}
 	}
 }