示例#1
0
 private void createContextMenu(MouseEvent me) throws TermInstantiationException {
   System.out.println("Right button click");
   Display display = context.getCanvas().getDisplay();
   Menu menu = new Menu(context.getCanvas().getShell(), SWT.POP_UP);
   try {
     Variable varAction = new Variable("Action");
     Iterator<Map<Variable, Object>> results =
         PrologProxy.instance()
             .getSolutions(Compound.createCompound("cpi#contextMenuEntry", descriptor, varAction));
     int count = 0;
     while (results.hasNext()) {
       Map<Variable, Object> result = (Map<Variable, Object>) results.next();
       Compound action = (Compound) result.get(varAction);
       TermInstantiator.instance().instantiate(action, menu, context);
       if (count++ > MAX_MENU_ENTRIES) {
         MenuItem errItem = new MenuItem(menu, SWT.NONE);
         errItem.setText("<too many results>");
         break;
       }
     }
   } catch (PrologException e1) {
     e1.printStackTrace();
   }
   Point absLocation = me.getLocation().getCopy();
   translateToAbsolute(absLocation);
   org.eclipse.swt.graphics.Point point =
       display.map(
           context.getCanvas(),
           null,
           new org.eclipse.swt.graphics.Point(absLocation.x, absLocation.y));
   menu.setLocation(point);
   menu.setVisible(true);
   while (!menu.isDisposed() && menu.isVisible()) {
     if (!display.readAndDispatch()) display.sleep();
   }
 }
示例#2
0
 public Control getCanvas() {
   return context.getCanvas();
 }