就像百度空间一样 在自定义布局的时候 能将一个模块拖动到任意的区域 该如何实现?没有具体代码说下大致的思路也行啊。。
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WindowManager:窗体管理器
Layout:布局模块
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style type="text/css">
#div1{
position:absolute;
cursor:pointer;
width:200px;
height:200px;
background:#F00;
z-index:10;
-moz-user-select:none;
}
</style>
</head>
<body >
<div id="div1" onmousedown="handleMouseDown(event)"></div>
<script type="text/javascript">
var EventUtil = new Object();
EventUtil.addEventHandler = function (oTarget , sEventType , fnHandler){
if( oTarget.addEventListener ){
oTarget.addEventListener(sEventType ,fnHandler, false);
}else if( oTarget.attachEvent ){
oTarget.attachEvent('on' + sEventType , fnHandler );
}
else{
oTarget['on'+sEventType] = fnHandler;
}
}
EventUtil.removeEventHandler = function (oTarget , sEventType , fnHandler){
if( oTarget.removeEventListener ){
oTarget.removeEventListener(sEventType , fnHandler , false);
}
else if( oTarget.detachEvent ){
oTarget.detachEvent('on' + sEventType , fnHandler );
}
else{
oTarget['on'+sEventType] = null;
}
}
EventUtil.getEvent = function(){
if( window.event ){
return window.event;
}else{
return EventUtil.getEvent.caller.arguments[0];
}
}
var iDiffX = 0;
var iDiffY = 0;
var oDiv = document.getElementById( 'div1' );
function handleMouseDown(){
var oEvent = EventUtil.getEvent();
iDiffX = oEvent.clientX - oDiv.offsetLeft;
iDiffY = oEvent.clientY - oDiv.offsetTop;
EventUtil.addEventHandler(document,'mousemove',handleMouseMove);
EventUtil.addEventHandler(document,'mouseup', handleMouseUp);
}
function handleMouseMove(){
var oEvent = EventUtil.getEvent();
oDiv.style.left = ( oEvent.clientX - iDiffX ) + 'px';
oDiv.style.top = ( oEvent.clientY - iDiffY ) + 'px';
}
function handleMouseUp(){
EventUtil.removeEventHandler(document,'mousemove',handleMouseMove);
EventUtil.removeEventHandler(document,'mouseup', handleMouseUp);
}
</script>
</body>
</html>