快速为view的工具条中加个下拉列表2

1.初始化Action testAction

testAction = new RetargetAction("testP2.test", "tttest", IAction.AS_DROP_DOWN_MENU);
        testAction.setEnabled(true);
        testAction.setMenuCreator(new IMenuCreator() {
        	private MenuManager dropDownMenuMgr;
			@Override
			public Menu getMenu(Menu parent) {//在菜单栏被调用
				createDropDownMenuMgr();
				Menu menu = new Menu(parent);
				IContributionItem[] items = dropDownMenuMgr.getItems();
				for (int i = 0; i < items.length; i++) {
					IContributionItem item = items[i];
					IContributionItem newItem = item;
					if (item instanceof ActionContributionItem) {
						newItem = new ActionContributionItem(
								((ActionContributionItem) item).getAction());
					}
					newItem.fill(menu, -1);
				}
				return menu;
			}
			
			@Override
			public Menu getMenu(Control parent) {//在工具栏被 调用
				createDropDownMenuMgr(); 
				return dropDownMenuMgr.createContextMenu(parent);
			}
			
			@Override
			public void dispose() {
				if(null != dropDownMenuMgr){
					dropDownMenuMgr.dispose();
					dropDownMenuMgr = null;
				}
			}
			
			private void createDropDownMenuMgr() {		
				if (dropDownMenuMgr == null) {			
					dropDownMenuMgr = new MenuManager();						
					dropDownMenuMgr.add(new InnerAction("One"));			
					dropDownMenuMgr.add(new InnerAction("Two"));		
					}	
				}
		});
        register(testAction);

2.所属于它下面的Item对应的Action

class InnerAction extends Action{
    	private String text;
    	InnerAction(String text){
    		super(text);
    		this.text = text;
    	}
    	@Override
    	public void run() {
    		super.run(); 
    		if("One".equals(text)){
    			//do one something
    		}else{
    			//do two something
    		}
    	}
    }

3.填充在工具条及菜单栏中
  protected void fillMenuBar(IMenuManager menuBar)
  protected void fillCoolBar(ICoolBarManager coolBar)

参考资料：
使用IMenuCreator
http://www.cnblogs.com/bronte/articles/1880116.html