import org.eclipse.ui.actions.OpenFileAction; //导入依赖的package包/类
public NewTextSearchActionGroup(IViewPart part) {
    Assert.isNotNull(part);
    IWorkbenchPartSite site = part.getSite();
    fSelectionProvider = site.getSelectionProvider();
    fPage = site.getPage();
    fOpenPropertiesDialog = new PropertyDialogAction(site, fSelectionProvider);
    fOpenAction = new OpenFileAction(fPage);
    ISelection selection = fSelectionProvider.getSelection();

    if (selection instanceof IStructuredSelection) {
        fOpenPropertiesDialog.selectionChanged((IStructuredSelection) selection);
    } else {
        fOpenPropertiesDialog.selectionChanged(selection);
    }

}
 

import org.eclipse.ui.actions.OpenFileAction; //导入依赖的package包/类
@Override
protected void fillContextMenu(IMenuManager menuManager) {
	super.fillContextMenu(menuManager);

	final IStructuredSelection selectedItems = getSelectedItems();
	if (selectedItems.isEmpty()) {
		return;
	}

	IWorkbenchPage activePage = getActivePage();
	if (activePage == null) {
		return;
	}

	menuManager.add(new Separator());

	// Add 'Open' menu item
	OpenFileAction openFileAction = new OpenFileAction(activePage) {
		@Override
		public void run() {
			okPressed();
		}
	};
	openFileAction.selectionChanged(selectedItems);
	if (openFileAction.isEnabled()) {
		menuManager.add(openFileAction);

		IAdaptable selectedAdaptable = getSelectedAdaptable();
		if (selectedAdaptable != null) {

			// Add 'Open With' sub-menu
			MenuManager subMenu = new MenuManager("Open with");
			OpenWithMenu openWithMenu = new ResourceOpenWithMenu(activePage, selectedAdaptable);
			subMenu.add(openWithMenu);
			menuManager.add(subMenu);
		}
	}

}
 

import org.eclipse.ui.actions.OpenFileAction; //导入依赖的package包/类
@Override
public void init(final ICommonActionExtensionSite aConfig) {
	if (aConfig.getViewSite() instanceof ICommonViewerWorkbenchSite) {
		viewSite = (ICommonViewerWorkbenchSite) aConfig.getViewSite();
		openFileAction = new OpenFileAction(viewSite.getPage());
		contribute = true;
	}
}
 

import org.eclipse.ui.actions.OpenFileAction; //导入依赖的package包/类
@Override
protected void fillContextMenu(IMenuManager menuManager) {
	super.fillContextMenu(menuManager);

	IStructuredSelection selectedItems = getSelectedItems();
	if (selectedItems.isEmpty()) {
		return;
	}
	
	IWorkbenchPage activePage = getActivePage();
	if (activePage == null) {
		return;
	}

	// Add 'Open' menu item
	OpenFileAction openFileAction = new OpenFileAction(activePage) {
		@Override
		public void run() {
			okPressed();
		}
	};
	openFileAction.selectionChanged(selectedItems);
	if (!openFileAction.isEnabled()) {
		return;
	}
	menuManager.add(new Separator());
	menuManager.add(openFileAction);

	IAdaptable selectedAdaptable = getSelectedAdaptable();
	if (selectedAdaptable == null) {
		return;
	}

	// Add 'Open With...'  sub-menu
	MenuManager subMenu = new MenuManager(IDEWorkbenchMessages.OpenResourceDialog_openWithMenu_label);
	OpenWithMenu openWithMenu = new OpenWithMenu(activePage, selectedAdaptable) {
		/*
		 * (non-Javadoc)
		 * @see org.eclipse.ui.actions.OpenWithMenu#openEditor(org.eclipse.ui.IEditorDescriptor, boolean)
		 */
		@Override
		protected void openEditor(IEditorDescriptor editorDescriptor, boolean openUsingDescriptor) {
			computeResult();
			setResult(Collections.EMPTY_LIST);
			close();
			super.openEditor(editorDescriptor, openUsingDescriptor);
		}
	};
	subMenu.add(openWithMenu);
	menuManager.add(subMenu);
}