Added ability to create multiple graphing windows that act separately.

Added ability to right check on signals in main view and graph them
directly.

mainwindow.h

@@ -92,6 +92,9 @@ private slots:
     void connectionStatusUpdated(int conns);
     void gridClicked(QModelIndex);
     void gridDoubleClicked(QModelIndex);
+    void gridContextMenuRequest(QPoint pos);
+    void setupAddToNewGraph();
+    void setupSendToLatestGraphWindow();
     void interpretToggled(bool);
     void overwriteToggled(bool);
     void logReceivedFrame(CANConnection*, QVector<CANFrame>);
@@ -147,7 +150,11 @@ private:
     int continuousLogFlushCounter;
 
     //References to other windows we can display
-    GraphingWindow *graphingWindow;
+
+    //Graph window is allowed to instantiate more than once. All the rest are not (yet).
+    GraphingWindow *lastGraphingWindow;
+    QList<GraphingWindow *> graphWindows;
+
     FrameInfoWindow *frameInfoWindow;
     FramePlaybackWindow *playbackWindow;
     FlowViewWindow *flowViewWindow;
@@ -178,8 +185,11 @@ private:
     QLabel lbHelp;
     int normalRowHeight;
     bool isConnected;
+    QPoint contextMenuPosition;
 
     //private methods
+    QString getSignalNameFromPosition(QPoint pos);
+    uint32_t getMessageIDFromPosition(QPoint pos);
     void saveDecodedTextFile(QString);
     void addFrameToDisplay(CANFrame &, bool);
     void updateFileStatus();