文章摘要
这篇文章介绍了Flex开发环境中的一个名为`RightClickManager`的类，用于处理右键点击事件（`rightClick`）。该类通过事件监听和DOM操作来实现以下功能：
1. **事件监听**：通过`mousedown`和`mouseup`等事件监听鼠标操作，包括按动（`onGeckoMouse`）和双击（`onIEMouse`）。
2. **事件处理**：在按动和双击事件中，调用`call`方法，执行右键操作，如调用`rightClick()`方法。
3. **事件管理**：通过`init`和`killEvents`方法管理事件的执行和终止，确保右键操作的正确执行。
4. **目标捕捉**：通过`regist`函数注册右键事件，并在`mouseOverHandler`和`dispatchRightClickEvent`函数中捕获鼠标移动和右键点击的目标元素。
文章重点描述了类的结构和核心功能，突出了对右键事件的处理逻辑和事件监听机制。
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=
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;
}
},
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();
}
},
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;
}
}
},
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;
}
},
call: function() {
document.getElementById(this.FlashObjectID).rightClick();
}
}
RightClick.init(flashObjectId);
}
]]>
;
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;
}
}
}
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