import org.eclipse.jdt.ui.actions.OpenAction; //导入依赖的package包/类
private void createActions() {
  // For the following commands we use actions, as they are already available

  final IActionBars ab = getViewSite().getActionBars();

  openAction = new OpenAction(getSite());
  openAction
      .setActionDefinitionId(IJavaEditorActionDefinitionIds.OPEN_EDITOR);
  ab.setGlobalActionHandler(JdtActionConstants.OPEN, openAction);
  openAction.setEnabled(false);
  viewer.addSelectionChangedListener(openAction);

  PropertyDialogAction propertiesAction = new PropertyDialogAction(getSite(),
      viewer);
  propertiesAction
      .setActionDefinitionId(IWorkbenchCommandConstants.FILE_PROPERTIES);
  ab.setGlobalActionHandler(ActionFactory.PROPERTIES.getId(),
      propertiesAction);
  propertiesAction.setEnabled(false);
  viewer.addSelectionChangedListener(propertiesAction);
}
 

import org.eclipse.jdt.ui.actions.OpenAction; //导入依赖的package包/类
@Override
public void run() {
	IJavaElement inputElement= fInfoView.getOrignalInput();
	new OpenAction(fInfoView.getViewSite()).run(new Object[] { inputElement });
}
 

import org.eclipse.jdt.ui.actions.OpenAction; //导入依赖的package包/类
@Override
protected void createActions() {
	super.createActions();
	fSelectAllAction= new SelectAllAction(fViewer);

	// Setup OpenAction
	fOpen= new OpenAction(getViewSite()) {

		/*
		 * @see org.eclipse.jdt.ui.actions.SelectionDispatchAction#getSelection()
		 */
		@Override
		public ISelection getSelection() {
			return convertToJavaElementSelection(fViewer.getSelection());
		}

		/*
		 * @see org.eclipse.jdt.ui.actions.OpenAction#run(IStructuredSelection)
		 */
		@Override
		public void run(IStructuredSelection selection) {
			if (selection.isEmpty()) {
				getShell().getDisplay().beep();
				return;
			}
			super.run(selection);
		}

		/*
		 * @see org.eclipse.jdt.ui.actions.OpenAction#getElementToOpen(Object)
		 */
		@Override
		public Object getElementToOpen(Object object) throws JavaModelException {
			if (object instanceof IJavaElement)
				fLastOpenedElement= (IJavaElement)object;
			else
				fLastOpenedElement= null;
			return super.getElementToOpen(object);
		}

		/*
		 * @see org.eclipse.jdt.ui.actions.OpenAction#run(Object[])
		 */
		@Override
		public void run(Object[] elements) {
			stopListeningForSelectionChanges();
			super.run(elements);
			startListeningForSelectionChanges();
		}
	};
}
 

import org.eclipse.jdt.ui.actions.OpenAction; //导入依赖的package包/类
public OpenAndExpand(IWorkbenchSite site, OpenAction openAction, TreeViewer viewer) {
	super(site);
	fOpenAction = openAction;
	fViewer = viewer;
}
 

import org.eclipse.jdt.ui.actions.OpenAction; //导入依赖的package包/类
@Override
public void run() {
	IJavaElement inputElement= fInfoView.getInput();
	new OpenAction(fInfoView.getViewSite()).run(new Object[] { inputElement });
}