Tomboy.NoteRecentChanges.OnNotebookSelectionChanged C# (CSharp) Method

		private void OnNotebookSelectionChanged (object sender, EventArgs args)
		{
			RestoreMatchesWindow ();
			Notebooks.Notebook notebook = GetSelectedNotebook ();
			if (notebook == null) {
				// Clear out the currently selected tags so that no notebook is selected
				selected_tags.Clear ();

				// Select the "All Notes" item without causing
				// this handler to be called again
				notebooksTree.Selection.Changed -= OnNotebookSelectionChanged;
				SelectAllNotesNotebook ();
				Tomboy.ActionManager ["DeleteNotebookAction"].Sensitive = false;
				notebooksTree.Selection.Changed += OnNotebookSelectionChanged;
			} else {
				selected_tags.Clear ();
				if (notebook.Tag != null)
					selected_tags.Add (notebook.Tag, notebook.Tag);
				if (notebook is Notebooks.SpecialNotebook) {
					Tomboy.ActionManager ["DeleteNotebookAction"].Sensitive = false;
				} else {
					Tomboy.ActionManager ["DeleteNotebookAction"].Sensitive = true;
				}
			}

			UpdateResults ();
		}