需求

去掉RCP中不必要的菜单项，并且自定义自己的菜单项。

分析

根据Eclipse 向导（过程类似于Eclipse插件（RCP）项目搭建）创建的RCP项目，默认都会生成*Activator文件。这些文件对于构造工作台有很大的帮助，其中ApplicationActionBarAdvisor就是专门用来构建工作台菜单的。该类继承自ActionBarAdvisor。

ActionBarAdvisor有三个空实现的方法fillMenuBar、fillCoolBar和fillStatusLine被设计子类可以重写，它们分别用来填充主菜单、快捷菜单（可拖动菜单）和状态栏（状态条，位于工作台最底部）。

本文需求将通过重写 fillMenuBar 而实现。ActionBarAdvisor中 fillMenuBar 的代码如下：

/**
	 * Fills the menu bar with the main menus for the window.
	 * <p>
	 * The default implementation does nothing. Subclasses may override.
	 * </p>
	 *
	 * @param menuBar the menu manager for the menu bar
	 */
	protected void fillMenuBar(IMenuManager menuBar) {
		// do nothing
	}

实现

**ApplicationActionBarAdvisor ** 类实现了两个主菜单File和Edit,其下有多个常用的子菜单。

package com.xzbd.advisor;

import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.actions.ActionFactory.IWorkbenchAction;
import org.eclipse.ui.application.ActionBarAdvisor;
import org.eclipse.ui.application.IActionBarConfigurer;

import com.xzbd.enums.MainMenu;

/**
 * An action bar advisor is responsible for creating, adding, and disposing of
 * the actions added to a workbench window. Each window will be populated with
 * new actions.
 */
public class ApplicationActionBarAdvisor extends ActionBarAdvisor {


	private IWorkbenchAction newAction;
	private IWorkbenchAction saveAction;
	private IWorkbenchAction saveAllAction;
	private IWorkbenchAction printAction;
	private IWorkbenchAction saveAsAction;
	private IWorkbenchAction closeAction;
	private IWorkbenchAction closeAllAction;
	
	// Actions - important to allocate these only in makeActions, and then use
	// them
	// in the fill methods. This ensures that the actions aren't recreated
	// when fillActionBars is called with FILL_PROXY.

	public ApplicationActionBarAdvisor(IActionBarConfigurer configurer) {
		super(configurer);
		
	}
	protected void makeActions(IWorkbenchWindow window) {
		makeAction(window, ActionFactory.UNDO);
		makeAction(window, ActionFactory.REDO);
		makeAction(window, ActionFactory.COPY);
		makeAction(window, ActionFactory.PASTE);
		makeAction(window, ActionFactory.CUT);
		makeAction(window, ActionFactory.SELECT_ALL);
		makeAction(window, ActionFactory.DELETE);
		makeAction(window, ActionFactory.FIND);
		makeAction(window, ActionFactory.IMPORT);
		makeAction(window, ActionFactory.EXPORT);


		newAction = ActionFactory.NEW.create(window);
		register(newAction);
		saveAction = ActionFactory.SAVE.create(window);
		register(saveAction);
		saveAllAction = ActionFactory.SAVE_ALL.create(window);
		register(saveAllAction);
		printAction = ActionFactory.PRINT.create(window);
		register(printAction);
		saveAsAction = ActionFactory.SAVE_AS.create(window);
		
		closeAction = ActionFactory.CLOSE.create(window);
		register(closeAction);
		closeAllAction = ActionFactory.CLOSE_ALL.create(window);
		register(closeAllAction);

	}

	protected IWorkbenchAction makeAction(IWorkbenchWindow window, ActionFactory af) {
		IWorkbenchAction action = af.create(window);
		register(action);
		return action;
	}
	
	@Override
	protected void fillMenuBar(IMenuManager menuBarold) {
		IMenuManager menuBar = getActionBarConfigurer().getMenuManager();
		// File菜单
		MenuManager fileMenu = new MenuManager("&File",MainMenu.FILE.getId() );
		fileMenu.add(new Separator());
		fileMenu.add(closeAction);
		fileMenu.add(closeAllAction);
		fileMenu.add(new Separator());
		fileMenu.add(saveAction);
		fileMenu.add(saveAsAction);
		fileMenu.add(saveAllAction);
		fileMenu.add(new Separator());
		fileMenu.add(printAction);
		fileMenu.add(new Separator());
		fileMenu.add(getAction(ActionFactory.IMPORT.getId()));
		fileMenu.add(getAction(ActionFactory.EXPORT.getId()));

		menuBar.add(fileMenu);
		
		// Edit菜单
		MenuManager editMenu = new MenuManager("&Edit", MainMenu.EDIT.getId());
		editMenu.add(getAction("undo"));
		editMenu.add(getAction("redo"));
		editMenu.add(getAction("find"));
		editMenu.add(getAction("selectAll"));
		editMenu.add(getAction("delete"));

		menuBar.add(editMenu);
		
		
	}

}

枚举类MainMenu实现如下：

package com.xzbd.enums;

import com.xzbd.constants.MenuConst;

public enum MainMenu {
	
	FILE(MenuConst.MAIN_MENU_ID_PREFIX.concat(".file")),
	EDIT(MenuConst.MAIN_MENU_ID_PREFIX.concat(".edit")),
	;
	private String Id ;

	public String getId() {
		return Id;
	}
	
	private MainMenu(String id) {
		Id = id;
	}
}

常量MenuConst如下：

package com.xzbd.constants;

public class MenuConst {

	public static final String MAIN_MENU_ID_PREFIX = "xzbd.epx.main.menu";
}

隐藏不需要的菜单在ApplicationWorkbenchWindowAdvisor中重写``完成，暂时在窗口打开后将其隐藏，代码如下：

	@Override
	public void postWindowOpen() {
		IActionBarConfigurer actionBarConfigurer = getWindowConfigurer().getActionBarConfigurer();
		IContributionItem[] items = actionBarConfigurer.getMenuManager().getItems();
		// 将主菜单不是自定义ID的隐藏
		for (int i = 0; i < items.length; i++) {
			IContributionItem item = items[i];
			
			String id = item.getId();
			if (id == null) {
				item.setVisible(false);
				continue;
			}
			if(!id.startsWith(MenuConst.MAIN_MENU_ID_PREFIX)) {
				item.setVisible(false);				
			}
		}
	}

效果展示

File 菜单

Edit 菜单

总结

多出来的菜单是由于依赖初始化时加的，本文采用隐藏的方式消除掉，若有更优雅的方式，请指正！

项目地址： epx

Eclipse插件（RCP）自定义工作台主菜单栏

需求

分析

实现

效果展示

File 菜单

Edit 菜单

总结