/*
	Copyright (c) 2004-2009, The Dojo Foundation All Rights Reserved.
	Available via Academic Free License >= 2.1 OR the modified BSD license.
	see: http://dojotoolkit.org/license for details
*/


if(!dojo._hasResource["dojo.dnd.Mover"]){
dojo._hasResource["dojo.dnd.Mover"]=true;
dojo.provide("dojo.dnd.Mover");
dojo.require("dojo.dnd.common");
dojo.require("dojo.dnd.autoscroll");
dojo.declare("dojo.dnd.Mover",null,{constructor:function(_1,e,_2){
this.node=dojo.byId(_1);
this.marginBox={l:e.pageX,t:e.pageY};
this.mouseButton=e.button;
var h=this.host=_2,d=_1.ownerDocument,_3=dojo.connect(d,"onmousemove",this,"onFirstMove");
this.events=[dojo.connect(d,"onmousemove",this,"onMouseMove"),dojo.connect(d,"onmouseup",this,"onMouseUp"),dojo.connect(d,"ondragstart",dojo.stopEvent),dojo.connect(d.body,"onselectstart",dojo.stopEvent),_3];
if(h&&h.onMoveStart){
h.onMoveStart(this);
}
},onMouseMove:function(e){
dojo.dnd.autoScroll(e);
var m=this.marginBox;
this.host.onMove(this,{l:m.l+e.pageX,t:m.t+e.pageY});
dojo.stopEvent(e);
},onMouseUp:function(e){
if(dojo.isWebKit&&dojo.isMac&&this.mouseButton==2?e.button==0:this.mouseButton==e.button){
this.destroy();
}
dojo.stopEvent(e);
},onFirstMove:function(){
var s=this.node.style,l,t,h=this.host;
switch(s.position){
case "relative":
case "absolute":
l=Math.round(parseFloat(s.left));
t=Math.round(parseFloat(s.top));
break;
default:
s.position="absolute";
var m=dojo.marginBox(this.node);
var b=dojo.doc.body;
var bs=dojo.getComputedStyle(b);
var bm=dojo._getMarginBox(b,bs);
var bc=dojo._getContentBox(b,bs);
l=m.l-(bc.l-bm.l);
t=m.t-(bc.t-bm.t);
break;
}
this.marginBox.l=l-this.marginBox.l;
this.marginBox.t=t-this.marginBox.t;
if(h&&h.onFirstMove){
h.onFirstMove(this);
}
dojo.disconnect(this.events.pop());
},destroy:function(){
dojo.forEach(this.events,dojo.disconnect);
var h=this.host;
if(h&&h.onMoveStop){
h.onMoveStop(this);
}
this.events=this.node=this.host=null;
}});
}