主程序mxml：
<?xml version="1.0" encoding="utf-8"?> <!--功能描述：结合tree拓展右键功能 必须在index.template.html设置params.wmode = "opaque"以屏蔽flash右键;--> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"
initialize="init()">
<fx:Script>
<![CDATA[
import com.render.TreeRightClickManager; import mx.controls.Alert;
import mx.controls.Menu;
import mx.controls.listClasses.IListItemRenderer;
import mx.events.MenuEvent; [Event(name="rightClick",type="flash.events.ContextMenuEvent")] private var rightClickRegisted:Boolean = false;
private var menu:Menu;
[Bindable]
private var data:XML; private function init():void{
data=
<actor label="周星驰" level="0">
<year label="1988" level="1">
<item label="《霹雳先锋》香港票房8916612 " level="2"/>
<item label="《捕风汉子》香港票房3149395" level="2"/>
<item label="《最佳女婿》香港票房5807710" level="2"/>
</year>
</actor>;
if (!rightClickRegisted){
TreeRightClickManager.regist();
rightClickRegisted = true;
}
//加载右击事件
tree.addEventListener(TreeRightClickManager.RIGHT_CLICK,treeRightClickHandler);
} /**
*树右击事件
**/
private function treeRightClickHandler(event:ContextMenuEvent):void
{
tree_onRightClicked(event);
tree_removeMenu();
tree_InitMenu();
} private function tree_onRightClicked(e:ContextMenuEvent):void
{
var rightClickItemRender:IListItemRenderer;
var rightClickIndex:int;
if(e.mouseTarget is IListItemRenderer)
{
rightClickItemRender = IListItemRenderer(e.mouseTarget); } else if(e.mouseTarget.parent is IListItemRenderer)
{
rightClickItemRender = IListItemRenderer(e.mouseTarget.parent);
}
if(rightClickItemRender != null)
{
rightClickIndex = tree.itemRendererToIndex(rightClickItemRender);
if(tree.selectedIndex != rightClickIndex)
{
tree.selectedIndex = rightClickIndex;
}
}
} /**
* 删除右键菜单
**/
private function tree_removeMenu():void
{
if(menu!=null)
{
menu.hide();
menu.removeEventListener(MenuEvent.ITEM_CLICK,tree_MenuItemSelected);
menu=null;
}
} /**
* 生成右键菜单
**/
private var selectedId:String="";
private var selectedLabel:String="";
private function tree_InitMenu():void
{
var currentItem:XML=tree.selectedItem as XML;
selectedId=currentItem.@id;
selectedLabel=currentItem.@label;
var level:String=currentItem.@level; menu = Menu.createMenu(this, tree_createMenuItems(level), 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.addEventListener(MenuEvent.ITEM_CLICK, tree_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
} /**
* 根据节点不同，生成不同的菜单
**/
private function tree_createMenuItems(level:String):Array {
var menuItems:Array = new Array();
var menuXs:Object= new Object;
menuXs.label = '刷新';
//menuXs.itemIcon = this.menu_TZ_add; //给菜单加图标
menuItems.push(menuXs);
var menuExpand:Object=new Object();
menuExpand.label="展开当前节点";
menuItems.push(menuExpand);
var menuClose:Object=new Object();
menuClose.label="关闭当前节点";
menuItems.push(menuClose);
var menuExpandAll:Object=new Object();
menuExpandAll.label="展开所有节点";
menuItems.push(menuExpandAll);
var menuCloseAll:Object=new Object();
menuCloseAll.label="关闭所有节点";
menuItems.push(menuCloseAll);
switch(level){
case "0":
var menuAddNj:Object = new Object;
menuAddNj.label = "添加明星";
menuItems.push(menuAddNj);
var menuDelNj:Object=new Object();
menuDelNj.label="删除明星";
menuItems.push(menuDelNj);
break;
case "1":
var menuAddBj:Object=new Object();
menuAddBj.label="添加年份";
menuItems.push(menuAddBj);
var menuDelBj:Object=new Object();
menuDelBj.label="删除年份";
menuItems.push(menuDelBj);
var menuAddStu:Object=new Object();
menuAddStu.label="添加影片";
menuItems.push(menuAddStu);
break;
case "2":
var menuEditStu:Object=new Object();
menuEditStu.label="修改影片";
menuItems.push(menuEditStu);
var menuDelStu:Object=new Object();
menuDelStu.label="删除影片";
menuItems.push(menuDelStu);
break;
} return menuItems; }
/**
* 点击菜单，相应方法
**/
private function tree_MenuItemSelected(event:MenuEvent):void {
var menuItem:Object = event.menu.selectedItem as Object;
switch(menuItem.label)
{
case "展开当前节点":
nodeExpand();
break;
case "关闭当前节点":
nodeClose();
break;
case "展开所有节点":
nodeExpandAll();
break;
case "关闭所有节点":
nodeCloseAll();
break;
case "删除影片":
delStuNode();
break;
case "添加影片":
addStuNode();
break; }
} private function treeChanged(event:Event):void{
var selectedTreeNode:XML;
selectedTreeNode=Tree(event.target).selectedItem as XML;
//Alert.show("您点击了："+selectedTreeNode.@label,"提示"); } /**
* 展开当前节点
**/
private function nodeExpand():void{
tree.expandItem(tree.selectedItem,true);
} /**
* 关闭当前节点
**/
private function nodeClose():void{
tree.expandItem(tree.selectedItem,false); } /**
* 展开所有节点
**/
private function nodeExpandAll():void{
for each(var item:XML in tree.dataProvider) {
tree.expandChildrenOf(item,true);
}
} /**
* 关闭所有节点
**/
private function nodeCloseAll():void{
//方法1：studentTree.openItems = [];
//方法2：
for each(var item:XML in tree.dataProvider) {
tree.expandChildrenOf(item,false);
}
} /**
* 删除节点
**/
private function delStuNode():void{
Alert.show("删除影片 ID="+selectedId+" 名称="+selectedLabel,"提示",4,null,ok);
function ok():void
{
var delStuItemPar:Object=new Object();
delStuItemPar=tree.selectedItem.parent();
var delStuInx:int=tree.selectedItem.childIndex();
tree.dataDescriptor.removeChildAt(delStuItemPar,tree.selectedItem,delStuInx,tree.dataProvider);
} } /**
* 添加影片
**/
private function addStuNode():void{
var node:XML=<item label="新影片" level="2"/>;
(tree.selectedItem as XML).appendChild(node);
} ]]>
</fx:Script>
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>
<s:Panel x="25" y="23" width="250" height="448" title="喜剧之王">
<mx:Tree id="tree" left="0" top="0" width="100%" height="100%" labelField="@label" change="treeChanged(event)" dataProvider="{data}" allowMultipleSelection ="true"/>
</s:Panel>
</s:Application>
com.render.TreeRightClickManager类：
package com.render
{
import flash.display.InteractiveObject;
import flash.events.ContextMenuEvent;
import flash.events.MouseEvent;
import flash.external.ExternalInterface; import mx.core.Application;
import mx.core.FlexGlobals; public class TreeRightClickManager
{
static private var rightClickTarget:*;
static public const RIGHT_CLICK:String = "rightClick";
static private const javascript:XML =
<script>
<![CDATA[
function(flashObjectId)
{
var RightClick = {
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 TreeRightClickManager()
{
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);
FlexGlobals.topLevelApplication.addEventListener(MouseEvent.MOUSE_OVER,mouseOverHandler); }
return true;
} static private function mouseOverHandler(event:MouseEvent) : void
{
rightClickTarget = InteractiveObject(event.target);
return;
} static private function dispatchRightClickEvent() : void
{
var event:ContextMenuEvent;
if(rightClickTarget !=null)
{
event =new ContextMenuEvent(RIGHT_CLICK,true,false, rightClickTarget as InteractiveObject, rightClickTarget as InteractiveObject);
rightClickTarget.dispatchEvent(event);
}
return;
} }
}
注：必须在index.template.html设置params.wmode = "opaque"以屏蔽flash右键