refactor list of data sets out of GraphWidget into a global data structure.

Also, add a sigc signal for broadcasting data set changes.

* grapher/GraphData.hxx (GraphDataList) new typedef
  (getGraphData, graphDataSignal): new functions
* grapher/Graph.hxx (DatasetList): remove typedef in favor of
  systemtap::GraphDataList
* grapher/GraphWidget.cxx (GraphWidget, onGraphDataChanged): Use
  graphDataSignal to notice new data sets that need to be added. Use
  the global data set list instead of one embedded in GraphWidget.
* grapher/StapParser.hxx: delete the _widget member; use signals to
  broadcast that there are new data sets instead of calling into the widget.

1 files changed, 1 insertions, 3 deletions

diff --git a/grapher/GraphWidget.hxx b/grapher/GraphWidget.hxx
index 0e9f2a29..89b86db9 100644
--- a/grapher/GraphWidget.hxx
+++ b/grapher/GraphWidget.hxx
@@ -42,14 +42,11 @@ namespace systemtap
   public:
     GraphWidget();
     virtual ~GraphWidget();
-    void addGraphData(std::tr1::shared_ptr<GraphDataBase> data);
     void addGraph();
 
   protected:
     typedef std::vector<std::tr1::shared_ptr<Graph> > GraphList;
     GraphList _graphs;
-    typedef std::vector<std::tr1::shared_ptr<GraphDataBase> > GraphDataList;
-    GraphDataList _graphData;
     // For click and drag
     std::tr1::shared_ptr<Graph> _activeGraph;
     // Dragging all graphs simultaneously, or perhaps seperately
@@ -99,6 +96,7 @@ namespace systemtap
     {
       return false;
     }
+    void onGraphDataChanged();
   };
 }
 #endif // SYSTEMTAP_GRAPHWIDGET_H