Drag'n'drop for plots

system/plots.py

@@ -62,6 +62,11 @@ class Plot (gtk.Frame):
         self.title = title
         self.selection_listener = None
 
+
+    
+            
+            
+
     def get_title(self):
         return self.title
 
@@ -115,6 +120,26 @@ class SmallView (gtk.Table):
                 child.parent_signalling = child.connect('button_press_event', self.__view_button_event__)
                 self.attach(child, x, x+1, y, y+1)
 
+        # drag'n'drop
+        for views in self.child_views:
+            for view in views:
+                view.drag_dest_set(gtk.DEST_DEFAULT_ALL, [("GTK_TREE_MODEL_ROW",gtk.TARGET_SAME_APP,7)],gtk.gdk.ACTION_LINK)
+                view.connect("drag-data-received",self.drag_received_by_view,view)
+
+
+    def drag_received_by_view(self, widget, drag_context, x, y, selection, info, timestamp, view):
+        treestore, path =  selection.tree_get_row_drag_data()
+        iter = treestore.get_iter(path)
+        obj  = treestore.get_value(iter,2)
+
+        loc = self.find_child(view)
+        
+        if loc and isinstance(obj, Plot) and (not self.find_child(obj)):
+            self.set_child(obj,loc[0],loc[1])
+    
+
+
+
     def set_view_listener(self, listener):
         self._listener = listener