DIV拖动层效果
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<!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=utf-8" />
<title>Div拖动效果</title>
<script type="text/javascript">
<!--
var IE=false,FF=false,W=window,D=document,H,B,GET="getElementsByTagName",GEI="getElementById",qq=0;
function fold(){
var e;
e=fixE(e);
if(e)element=fixElement(e);
element=element.parentNode.parentNode;
element.className=element.className.indexOf("hide")>0?"module":"module hide";
}
var Drag={
draging : false,
x : 0,
y : 0,
element : null,
fDiv : null,
ghost : null,
addEvent : function(){var a=D[GET]("li");for(var i=a.length-1;i>-1;i--)if(a[i].className=="module")a[i].onmousedown=Drag.dragStart;},
ix:2,iy:7,
ox:6,oy:7,
fx:6,fy:6,
dragStart : function (e){
if(Drag.draging)return;
var e;
e=fixE(e);
if(e)element=fixElement(e);
/*********
var k,s="";
for(k in element)s+=k+" : "+element[k]+"<br/>";
D.getElementById("bbb").innerHTML=s;
**********/
D.getElementById("aaa").innerHTML=element.parentNode.offsetTop+ ","+element.parentNode.offsetHeight;
//测试
if(element.className!="title")return;
element=element.parentNode;
Drag.element=element;
//以上获得当前移动的模块
Drag.x=e.layerX?e.layerX+Drag.fx:(IE?e.x+Drag.ix:e.offsetX+Drag.ox);
Drag.y=e.layerY?e.layerY+Drag.fy:(IE?e.y+Drag.iy:e.offsetY+Drag.oy);
//鼠标相对于模块的位置
Drop.measure();
if(e.layerX){Drag.floatIt(e);Drag.drag(e);}//fix FF
B.style.cursor="move";
D.onmousemove=Drag.drag;
D.ondragstart=function(){window.event.returnValue = false;}
D.onselectstart=function(){window.event.returnValue = false;};
D.onselect=function(){return false};
D.onmouseup=element.onmouseup=Drag.dragEnd;
element.onmousedown=null;
},
drag : function (e){
var e;
e=fixE(e);
if(!Drag.fDiv)Drag.floatIt(e);//for IE & Opera
var x=e.clientX,y=e.clientY;
Drag.fDiv.style.top=y+H.scrollTop-Drag.y+"px";
Drag.fDiv.style.left=x+H.scrollLeft-Drag.x+"px";
Drop.drop(x,y);
//statu(e);
},
dragEnd : function (e){
B.style.cursor="";
D.ondragstart=D.onmousemove=D.onselectstart=D.onselect=D.onmouseup=null;
Drag.element.onmousedown=Drag.dragStart;
if(!Drag.draging)return;
Drag.ghost.parentNode.insertBefore(Drag.element,Drag.ghost);
Drag.ghost.parentNode.removeChild(Drag.ghost);
B.removeChild(Drag.fDiv);
Drag.fDiv=null;
Drag.draging=false;
Drop.init(D[GEI]("container"));
},
floatIt : function(e){
var e,element=Drag.element;
var ghost=D.createElement("LI");
Drag.ghost=ghost;
ghost.className="module ghost";
ghost.style.height=element.offsetHeight-2+"px";
element.parentNode.insertBefore(ghost,element);
//创建模块占位框
var fDiv=D.createElement("UL");
Drag.fDiv=fDiv;
fDiv.className="float";
B.appendChild(fDiv);
fDiv.style.width=ghost.parentNode.offsetWidth+"px";
fDiv.appendChild(element);
//创建容纳模块的浮动层
Drag.draging=true;
}
}
var Drop={
root : null,
index : null,
column : null,
init : function(it){
if(!it)return;
Drop.root=it;
it.firstItem=it.lastItem=null;
var a=it[GET]("ul");
for(var i=0;i<a.length;i++){
if(a[i].className!="column")continue;
if(it.firstItem==null){
it.firstItem=a[i];
a[i].previousItem=null;
}else{
a[i].previousItem=a[i-1];
a[i-1].nextItem=a[i];
}
a[i].nextItem=null;
it.lastItem=a[i];
a[i].index=i;
a[i].firstItem=a[i].lastItem=null;
var b=a[i][GET]("li");
for(var j=0;j<b.length;j++){
if(b[j].className.indexOf("module")==-1)continue;
if(a[i].firstItem==null){
a[i].firstItem=b[j];
b[j].previousItem=null;
}else{
b[j].previousItem=b[j-1];
b[j-1].nextItem=b[j];
}
b[j].nextItem=null;
a[i].lastItem=b[j];
b[j].index=i+","+j;
}
}
},
measure : function(){
if(!Drop.root)return;
var currentColumn=Drop.root.firstItem;
while(currentColumn){
var currentModule=currentColumn.firstItem;
while(currentModule){
currentModule.minY=currentModule.offsetTop;
currentModule.maxY=currentModule.minY+currentModule.offsetHeight;
currentModule=currentModule.nextItem;
}
currentColumn.minX=currentColumn.offsetLeft;
currentColumn.maxX=currentColumn.minX+currentColumn.offsetWidth;
currentColumn=currentColumn.nextItem;
}
Drop.index=Drag.element.index;
},
drop : function(x,y){
if(!Drop.root)return;
var x,y,currentColumn=Drop.root.firstItem;
while(x>currentColumn.maxX)if(currentColumn.nextItem)currentColumn=currentColumn.nextItem;else break;
var currentModule=currentColumn.lastItem;
if(currentModule)while(y<currentModule.maxY){
if(y>currentModule.minY-12){
if(Drop.index==currentModule.index)return;
Drop.index=currentModule.index;
if(currentModule.index==Drag.element.index){if(currentModule.nextItem)currentModule=currentModule.nextItem;else break;}
currentColumn.insertBefore(Drag.ghost,currentModule);
Drop.column=null;
window.status=qq++;
return;
}else if(currentModule.previousItem)currentModule=currentModule.previousItem;else return;
}
if(Drop.column==currentColumn.index)return;
currentColumn.appendChild(Drag.ghost);
Drop.index=0;
Drop.column=currentColumn.index;
window.status=qq++;
}
}
var webNote={
obj : null,
canEdit : function(e){
var e,element;
e=fixE(e);
element=fixElement(e);
if(element.className!='webNote')return;
if(typeof element.contentEditable!="undefined"){
element.contentEditable=true;
element.style.borderColor='red';
element.focus();
webNote.obj=element;
}
},
cannotEdit : function(){
if(!webNote.obj)return;
if(typeof webNote.obj.contentEditable!="undefined"){
webNote.obj.style.borderColor='#ffffe0';
webNote.obj.contentEditable=false;
webNote.obj=null;
}
}
}
function fixE(e){var e;e=e?e:(window.event?window.event:null);return e}
function fixElement(e){var e;return e.target?(e.target.nodeType==3?e.target.parentNode:e.target):e.srcElement;}
onload=function(){
B=D[GET]("body")[0];
H=D[GET]("html")[0];
Drop.init(D[GEI]("container"));
Drag.addEvent();
}
function statu(e){
var e,element;
element=fixElement(e);
var aa=D.getElementById("aaa");
aa.innerHTML="e.xy:("+e.x+","+e.y+")<br/>e.offsetXY:("+e.offsetX+","+e.offsetY+")<br/>e.clientXY:("+e.clientX+","+e.clientY+")<br/>element.offsetLeftTop:("+element.offsetLeft+","+element.offsetTop+")<br/>e.layerXY:("+e.layerX+","+e.layerY+")";
}
//-->
</script>
<style type="text/css">
body,table,td,th,input,textarea,button,select{font:13px/16px Verdana,"宋体",sans-serif;}
table{border-collapse:collapse;}
p{margin:0px;}
.container{margin:8px;}
.column{width:33%;margin:0px;padding:0px;float:left;overflow:hidden;}
.module{margin:5px;padding:0px;position:relative;list-style:none;
border:1px solid #ADDFF2; text-align:left; overflow:hidden; color:#9C9C9C; text-align:left;}
.title{padding:1px 0px;width:100%;overflow:hidden;cursor:move;z-index:0;font-weight:bold;
background:#EEF7FE; border-bottom:1px solid #ADDFF2; color:#1974C8; font-size:12px}
.cont{padding:3px;overflow:hidden;
color:#3083C7;}
.hide .cont{display:none;}
.pageTitle{font-weight:bold;text-align:center;}
input.pageTitle{display:none;border:0px;padding:0px;width:100%;}
.webNote{background-color:#ffffe0;border:1px solid #ffffe0;}
textarea.webNote{display:none;overflow:hidden;padding:0px;border:0px;padding:0px;}
.ghost{border:1px dashed red;}
.float{position:absolute;z-index:100;margin:0px;padding:0px;overflow:hidden;list-style:none;-moz-opacity:.75;filter:Alpha(opacity=75);}
</style>
<!--[if IE]>
<script type="text/javascript">
IE=true;
</script>
<style type="text/css">
input.pageTitle{margin:-1px;}
</style>
<![endif]-->
<![if !IE]><![endif]>
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