Java 类org.eclipse.gef.ui.actions.UndoAction 实例源码

public void init(IViewPart view)
{
  IActionBars actionBars = view.getViewSite().getActionBars();
  IToolBarManager toolBarManager = actionBars.getToolBarManager();

  final UndoAction undoAction = new UndoAction(view);
  toolBarManager.add(undoAction);
  undoAction.setImageDescriptor(Activator.imageDescriptorFromPlugin(Activator.PLUGIN_ID, "icons/undo.png"));
  final RedoAction redoAction = new RedoAction(view);
  redoAction.setImageDescriptor(Activator.imageDescriptorFromPlugin(Activator.PLUGIN_ID, "icons/redo.png"));
  toolBarManager.add(redoAction);

  viewer.getEditDomain().getCommandStack().addCommandStackListener(
      new CommandStackListener()
      {

        @Override
        public void commandStackChanged(EventObject event)
        {
          undoAction.setEnabled(undoAction.isEnabled());
          redoAction.setEnabled(redoAction.isEnabled());
        }
      });

}