Flex自定义右键菜单

1. 自定义右键菜单注册类:
   项目中新增注册类 RightClickManager，代码如下：
   

   package com.siloon.plugin.rightClick {      import flash.display.DisplayObject;      import flash.display.InteractiveObject;      import flash.events.ContextMenuEvent;      import flash.events.MouseEvent;      import flash.external.ExternalInterface;           import mx.core.Application;           public class RightClickManager      {           static private var rightClickTarget:DisplayObject;         static public const RIGHT_CLICK:String = "rightClick";         static private const javascript:XML =         <script>              <![CDATA[                   /**                     *                     * Copyright 2007                     *                     * Paulius Uza                     * http://www.uza.lt                     *                     * Dan Florio                     * http://www.polygeek.com                     *                     * Project website:                     * http://code.google.com/p/custom-context-menu/                     *                     * --                     * RightClick for Flash Player.                     * Version 0.6.2                     *                     */                     function(flashObjectId)                     {                                             var RightClick = {                               /**                               *  Constructor                               */                               init: function (flashObjectId) {                                    this.FlashObjectID = flashObjectId;                                    this.Cache = this.FlashObjectID;                                    if(window.addEventListener){                                         window.addEventListener("mousedown", this.onGeckoMouse(), true);                                    } else {                                         document.getElementById(this.FlashObjectID).parentNode.onmouseup = function() { document.getElementById(RightClick.FlashObjectID).parentNode.releaseCapture(); }                                         document.oncontextmenu = function(){ if(window.event.srcElement.id == RightClick.FlashObjectID) { return false; } else { RightClick.Cache = "nan"; }}                                         document.getElementById(this.FlashObjectID).parentNode.onmousedown = RightClick.onIEMouse;                                    }                               },                               /**                               * GECKO / WEBKIT event overkill                               * @param {Object} eventObject                               */                               killEvents: function(eventObject) {                                    if(eventObject) {                                         if (eventObject.stopPropagation) eventObject.stopPropagation();                                         if (eventObject.preventDefault) eventObject.preventDefault();                                         if (eventObject.preventCapture) eventObject.preventCapture();                                            if (eventObject.preventBubble) eventObject.preventBubble();                                    }                               },                               /**                               * GECKO / WEBKIT call right click                               * @param {Object} ev                               */                               onGeckoMouse: function(ev) {                                      return function(ev) {                                   if (ev.button != 0) {                                         RightClick.killEvents(ev);                                         if(ev.target.id == RightClick.FlashObjectID && RightClick.Cache == RightClick.FlashObjectID) {                                             RightClick.call();                                         }                                         RightClick.Cache = ev.target.id;                                    }                                 }                               },                               /**                               * IE call right click                               * @param {Object} ev                               */                               onIEMouse: function() {                                      if (event.button > 1) {                                         if(window.event.srcElement.id == RightClick.FlashObjectID && RightClick.Cache == RightClick.FlashObjectID) {                                              RightClick.call();                                         }                                         document.getElementById(RightClick.FlashObjectID).parentNode.setCapture();                                         if(window.event.srcElement.id)                                         RightClick.Cache = window.event.srcElement.id;                                    }                               },                               /**                               * Main call to Flash External Interface                               */                               call: function() {                                    document.getElementById(this.FlashObjectID).rightClick();                               }                          }                                                   RightClick.init(flashObjectId);                     }              ]]>         </script>;         public function RightClickManager()         {             return;         }         static public function regist() : Boolean         {             if (ExternalInterface.available)             {                 ExternalInterface.call(javascript, ExternalInterface.objectID);                 ExternalInterface.addCallback("rightClick", dispatchRightClickEvent);                 Application.application.addEventListener(MouseEvent.MOUSE_OVER,mouseOverHandler);             }// end if             return true;         }         static private function mouseOverHandler(event:MouseEvent) : void         {                //rightClickTarget = DisplayObject(event.target);                rightClickTarget = InteractiveObject(event.target);             return;         }         static private function dispatchRightClickEvent() : void         {                var event:MouseEvent;             if (rightClickTarget != null)             {                 event = new MouseEvent(RIGHT_CLICK, true, false, rightClickTarget.mouseX, rightClickTarget.mouseY);                     //event = new ContextMenuEvent(RIGHT_CLICK, true, false, rightClickTarget as InteractiveObject, rightClickTarget as InteractiveObject);                     rightClickTarget.dispatchEvent(event);             }// end if             return;         }      } }

   
   
   
   
2.  打开自己的Flex工程下的html-template文件夹下的index.template.html文件（右击-Open With-Text Editor），在var params = {};语句的下面添加下面的语句：
   params.wmode = "opaque";//屏蔽系统右键菜单的关键

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   3.  在主程序文件中引入：
    

   //初始化 protected function init():void                {                     if (!rightClickRegisted)                      {                           maxNumText.text=rightClickRegisted.toString();                          RightClickManager.regist();                           rightClickRegisted = true;                      }                     this.addEventListener(RightClickManager.RIGHT_CLICK,rightClickHandler);                     maxNumText.text+="init";                } //创建菜单项                private function createMenuItems():Array                 {                                          var menuItems:Array = new Array();                                                                                 var menuItem:Object;                                         menuItem = new Object;                                          menuItem.label = '刷新'; //菜单项名称                                         //menuItem.itemIcon = this.menu_SX;//菜单项图标                                         menuItems.push(menuItem);                                         return menuItems;                                     }                               //生成右键菜单                               private function initMenu():void                {                     menu = Menu.createMenu(this, createMenuItems(), false);                                         //menu.iconField="itemIcon";//右键菜单的图标                                         //menu.labelField="label";  //右键菜单的名称                                         menu.variableRowHeight = true;                         menu.width=100;                                         menu.addEventListener(MenuEvent.ITEM_CLICK, menuItemSelected);  //右键菜单的事件                                         var point:Point = new Point(mouseX,mouseY);                                          point = localToGlobal(point);                                           menu.show(point.x,point.y);  //显示右键菜单                     maxNumText.text="initMenu";                }                               //删除右键菜单                               private function removeMenu():void                                    {                      if(menu!=null)                      {                           menu.hide();                                                   menu.removeEventListener(MenuEvent.ITEM_CLICK,menuItemSelected);                                                    menu=null;                      }                      maxNumText.text="removeMenu";                }                               //菜单项点击事件                               private function menuItemSelected(event:MenuEvent):void                {                                         var menuItem:Object = event.menu.selectedItem as Object;                                         //……                     switch(menuItem.label)                                              {                          case "刷新":                               addLine();                               break;                          //                         ……                                              }                }                private function addLine():void                {                     maxNumText.text="addLine";                }                               //控件右击事件                               private function rightClickHandler(event:MouseEvent):void                                    {                     //tree_onRightClicked(event);                     maxNumText.text="rightClickHandler0";                     removeMenu();                                         initMenu();                     maxNumText.text="rightClickHandler";                }

   
   
   4.完整代码如下：
   示例代码文件