JPopupMenu/JMenuItem sizing problem

Question

Hi All,
I have a JPopupMenu that is displayed when a right-click takes place. The popup menu should display three JMenuItems when a vertex is right-clicked and one menu item when an edge is right-clicked. However, when I right-click a vertex, only two menu items are visible, and when I right-click an edge, zero menu items are visible (the popup menu appears, but it is so small that I can't see the menu item).
Here is the relevant code:
          protected void handlePopup(MouseEvent me) {
            final VisualizationViewer vv = (VisualizationViewer)me.getSource();
            Point2D p = vv.inverseViewTransform(me.getPoint());
            PickSupport pickSupport = vv.getPickSupport();
            if(pickSupport != null) {
                Vertex v = pickSupport.getVertex(p.getX(), p.getY());
                Edge e = pickSupport.getEdge(p.getX(), p.getY());
                if((v != null) && (v instanceof BrokerVertex)) {                 
                     JPopupMenu popup = new JPopupMenu();
                    JMenuItem m_SetAdvMenuItem = new JMenuItem(MonitorResources.M_SET_ADV);
                    m_SetAdvMenuItem.addActionListener(m_MonitorFrame);
                    popup.add(m_SetAdvMenuItem);
                    JMenuItem m_centerVertex = new JMenuItem("Center Vertex");
                    m_centerVertex.setAction(new CenterAction(m_graph.getLayout().getLocation(v)));
                    popup.add(m_centerVertex);
                    JMenuItem m_SetSubMenuItem = new JMenuItem(MonitorResources.M_SET_SUB);
                    m_SetSubMenuItem.addActionListener(m_MonitorFrame);
                    popup.add(m_SetSubMenuItem);
                    popup.show(vv, me.getX(), me.getY());
                    popup.pack();
                } else if ((e != null) && (e instanceof MonitorEdge)) {
                     MonitorEdge mEdge = (MonitorEdge) e;
                     JPopupMenu popup = new JPopupMenu();
                     boolean activationCountDisplayStatus = mEdge.activationCountIsDisplayed();
                     String activationCountToggleMessage;
                     if (activationCountDisplayStatus) {
                          activationCountToggleMessage = "Hide Message Counter";
                     } else {
                          activationCountToggleMessage = "Show Message Counter";
                    JMenuItem m_activationCountMenuItem = new JMenuItem(activationCountToggleMessage);
                    m_activationCountMenuItem.setAction(new ToggleEdgeActivationCountMessageAction(mEdge));
                    popup.add(m_activationCountMenuItem);
                    popup.show(vv, me.getX(), me.getY());
                    popup.pack();
          }The problem is with the JMenuItems that use setAction instead of addActionListener (m_centerVertex and m_activationCountMenuItem). These two JMenuItems are in the popup menu list, but the popup menu is not large enough for me to see the labels given to m_centerVertex and m_activationCountMenuItem.
Anyone know what I'm doing wrong?
m_SetAdvMenuItem and m_SetSubMenuItem display correctly. It's as if the height of m_centerVertex and m_activationCountMenuItem are set at a value of 0 but the heights of the other two JMenuItems are the correct height.
Message was edited by:
themiddle

Answer 1

Did you set a name value in your Actions? The name value will be used to set the text. If its null that may account for the small size of the menu item.
If you need further help then you need to create a [url http://homepage1.nifty.com/algafield/sscce.html]Short, Self Contained, Compilable and Executable, Example Program (SSCCE) that demonstrates the incorrect behaviour, because I can't guess exactly what you are doing based on the information provided.
And don't forget to use the [url http://forum.java.sun.com/help.jspa?sec=formatting]Code Formatting Tags so the code retains its original formatting.