fixes

system/navigator.py

@@ -18,7 +18,6 @@ class NavigatorView (gtk.TreeView):
 
         # various properties
         self.set_headers_visible(False)
-
         # Selection Mode
         self.get_selection().set_mode(gtk.SELECTION_MULTIPLE)
         self.get_selection().set_select_function(self.is_selectable)
@@ -29,11 +28,11 @@ class NavigatorView (gtk.TreeView):
         #        self.connect('cursor_changed', self.cursor_changed_handler)
         self.connect('row_activated', self.row_activated_handler)
 
-        textrenderer = gtk.CellRendererText()
-
+        self.textrenderer = textrenderer = gtk.CellRendererText()
+        textrenderer.set_property('foreground_set',True)
         self.object_col = gtk.TreeViewColumn('Object')
-        self.object_col.pack_start(textrenderer)
-        self.object_col.set_attributes(textrenderer, cell_background=3, foreground = 4, text=0)
+        self.object_col.pack_start(textrenderer,expand=False)
+        self.object_col.set_attributes(textrenderer, cell_background=3, foreground=4, text=0)
         self.append_column(self.object_col)
 
         # send events to plots / itself
@@ -46,12 +45,11 @@ class NavigatorView (gtk.TreeView):
    
     # sets data for drag event.
     def slot_drag_data(self,treeview,context,selection,target_id,etime):
-        treeselection   = treeview.get_selection()
-        model, paths     = treeselection.get_selected_rows()
-        if paths:    
+        treeselection = treeview.get_selection()
+        model, paths = treeselection.get_selected_rows()
+        if paths:
             self.data_tree.drag_data_get(paths[0], selection)
 
-
     def add_project(self, project):
         self.project = project
         self.data_tree = project.data_tree
@@ -69,12 +67,13 @@ class NavigatorView (gtk.TreeView):
 
     # selection changed, setting current_data ojbects
     def selection_changed_handler(self, selection):
-                
         # update prev selection right away in case of multiple events
         model, paths = selection.get_selected_rows()
-        tmp = self._previous_selection 
+        if not paths: # a plot is marked: do nothing
+            return
+
+        tmp = self._previous_selection
         self._previous_selection = paths
-              
         # set timestamp on newly selected objects
         [self.data_tree.set_value(self.data_tree.get_iter(path),5,time.time()) for path in paths if path not in tmp]
 
@@ -99,7 +98,6 @@ class NavigatorView (gtk.TreeView):
 
         if not (treestore.get_value(iter,2) or treestore.get_value(iter,1)):
             return
-
         self.expand_to_path(pos)        
 
         if isinstance(obj,dataset.Dataset):
@@ -121,7 +119,7 @@ class NavigatorView (gtk.TreeView):
         d.set_default_response(gtk.BUTTONS_OK)
         d.run()
         d.destroy()        
-
+        
     def row_activated_handler(self, widget, path, column):
         tree_iter = self.data_tree.get_iter(path)
         obj = self.data_tree.get_value(tree_iter, 2)