Fixed plot focus signal problem.

fluents/view.py

@@ -236,13 +236,12 @@ class MainView (gtk.Notebook):
         self.set_show_tabs(False)
         self.set_show_border(False)
 
+        self._focus_listeners = []
         self._view_frames = []
         self._views = ObjectTable(2, 2, lambda : ViewFrame(self._view_frames))
         self._large_view = ViewFrame(list())
         self.update_small_views()
 
-        for vf in self._view_frames:
-            vf.connect('focus-changed', self._on_view_focus_changed)
         
         self.append_page(self._small_views)
         self.append_page(self._large_view)
@@ -256,6 +255,11 @@ class MainView (gtk.Notebook):
         """Creates a new gtk.Table to show the views. Called after changes to
         the _views property"""
 
+        # Disconnect focus-changed signal for all ViewFrames
+        for vf, fl in zip(self._view_frames, self._focus_listeners):
+            vf.disconnect(fl)
+
+        # Resize table
         self._small_views = gtk.Table(self._views.ysize, self._views.xsize, True)
         self._small_views.set_col_spacings(4)
         self._small_views.set_row_spacings(4)
@@ -265,6 +269,12 @@ class MainView (gtk.Notebook):
                 self._small_views.attach(child, x, x+1, y, y+1)
         self._small_views.show_all()
 
+        # Create new focus-changed signal handlers
+        fls = []
+        for vf in self._view_frames:
+            fls.append(vf.connect('focus-changed', self._on_view_focus_changed))
+        self._focus_listeners = fls
+
     def get_active_small_view(self):
         """Returns the active ViewFrame in the small views table.
         If a view is maximized, the corresponding ViewFrame in the table