Drag'n'drop for plots

system/navigator.py

@@ -19,7 +19,6 @@ class NavigatorView (gtk.TreeView):
         self.connect('cursor_changed', self.cursor_changed_handler)
         self.connect('row_activated', self.row_activated_handler)
 
-       
         #pixrenderer  = gtk.CellRendererPixbuf()
         textrenderer = gtk.CellRendererText()
 
@@ -28,11 +27,24 @@ class NavigatorView (gtk.TreeView):
         self.object_col.pack_start(textrenderer)
 
         self.object_col.set_attributes(textrenderer, cell_background=3, foreground = 4, text=0)
-
         self.append_column(self.object_col)
 
+        # drag'n'drop
+        self.enable_model_drag_source(gtk.gdk.BUTTON1_MASK,[("GTK_TREE_MODEL_ROW",gtk.TARGET_SAME_APP,7)], gtk.gdk.ACTION_LINK)
+        self.connect("drag-data-get",self.slot_drag_data)
+
         logger.log('debug', 'Initializing navigator window.')
 
+    
+    # sets data for drag event.
+    def slot_drag_data(self,treeview,context,selection,target_id,etime):
+        treeselection   = treeview.get_selection()
+        model, iter     = treeselection.get_selected()
+        path            = model.get_path(iter)
+    
+        self.data_tree.drag_data_get(path, selection)
+
+
     def add_project(self, project):
         self.project = project
         self.data_tree = project.data_tree
@@ -47,7 +59,7 @@ class NavigatorView (gtk.TreeView):
         if isinstance(obj, dataset.Dataset):
             logger.log('debug', 'Selecting dataset')
             self.project.set_current_data(obj)
-        elif not isinstance(obj, plots.Plot):
+        else: 
             t = type(obj)
             logger.log('debug', 'Selected datatype was %s. Don\'t know what to do.' % t)
 

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