diff -r 1db7a6dd17f8 -r 0b2281cc1e32 graph_displayer_canvas.cc
--- a/graph_displayer_canvas.cc	Mon Jun 13 19:49:33 2005 +0000
+++ b/graph_displayer_canvas.cc	Tue Jun 14 15:58:12 2005 +0000
@@ -322,6 +322,11 @@
     case CREATE_EDGE:
       actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_edge_event_handler), false);
       break;
+
+    case ERASER:
+      actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraser_event_handler), false);
+      break;
+
     default:
       break;
     }
@@ -584,3 +589,87 @@
   return false;
 }
 
+bool GraphDisplayerCanvas::eraser_event_handler(GdkEvent* e)
+{
+  switch(e->type)
+    {
+    case GDK_BUTTON_PRESS:
+      active_item=(get_item_at(e->button.x, e->button.y));
+      active_node=INVALID;
+      active_edge=INVALID;
+      for (NodeIt i(g); i!=INVALID; ++i)
+	{
+	  if(nodesmap[i]==active_item)
+	    {
+	      active_node=i;
+	    }
+	}
+      if(active_node==INVALID)
+	{
+	  for (EdgeIt i(g); i!=INVALID; ++i)
+	    {
+	      if(edgesmap[i]==active_item)
+		{
+		  active_edge=i;
+		}
+	    }
+	}
+    *active_item << Gnome::Canvas::Properties::fill_color("red");
+      break;
+
+    case GDK_BUTTON_RELEASE:
+      if(active_item==(get_item_at(e->button.x, e->button.y)))
+	{
+	  if(active_node!=INVALID)
+	    {
+	      EdgeIt e;
+	      g.firstOut(e,active_node);
+	      for(;e!=INVALID;g.nextOut(e))
+		{
+		  delete_item(edgesmap[e]);
+		  //edgesmap[e]->property_points().set_value(coos);
+		  //edgetextmap[e]->property_y().set_value((y1+y2)/2);
+		}
+
+	      g.firstIn(e,active_node);
+	      for(;e!=INVALID;g.nextIn(e))
+		{
+		  delete_item(edgesmap[e]);
+		  //edgesmap[e]->get_bounds(x1, y1, x2, y2);
+		  //edgetextmap[e]->property_y().set_value((y1+y2)/2);
+		}
+	    }
+	  delete_item(active_item);
+	  
+	}
+      else
+	{
+	  if(active_node!=INVALID)
+	    {
+	      *active_item << Gnome::Canvas::Properties::fill_color("blue");
+	    }
+	  else
+	    {
+	      *active_item << Gnome::Canvas::Properties::fill_color("green");
+	    }
+	}
+      active_item=NULL;
+      active_edge=INVALID;
+      active_node=INVALID;
+      break;
+
+    case GDK_MOTION_NOTIFY:
+      break;
+
+    default:
+      break;
+    }
+  return true;
+}
+
+void GraphDisplayerCanvas::delete_item(Gnome::Canvas::Item * item_to_delete)
+{
+  //item_to_delete->hide();
+  delete(item_to_delete);
+}
+