lib/dojo/dnd/Mover.js

   1 /*
   2         Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
   3         Available via Academic Free License >= 2.1 OR the modified BSD license.
   4         see: http://dojotoolkit.org/license for details
   5 */
   6
   7
   8 if(!dojo._hasResource["dojo.dnd.Mover"]){
   9 dojo._hasResource["dojo.dnd.Mover"]=true;
  10 dojo.provide("dojo.dnd.Mover");
  11 dojo.require("dojo.dnd.common");
  12 dojo.require("dojo.dnd.autoscroll");
  13 dojo.declare("dojo.dnd.Mover",null,{constructor:function(_1,e,_2){
  14 this.node=dojo.byId(_1);
  15 this.marginBox={l:e.pageX,t:e.pageY};
  16 this.mouseButton=e.button;
  17 var h=this.host=_2,d=_1.ownerDocument,_3=dojo.connect(d,"onmousemove",this,"onFirstMove");
  18 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];
  19 if(h&&h.onMoveStart){
  20 h.onMoveStart(this);
  21 }
  22 },onMouseMove:function(e){
  23 dojo.dnd.autoScroll(e);
  24 var m=this.marginBox;
  25 this.host.onMove(this,{l:m.l+e.pageX,t:m.t+e.pageY},e);
  26 dojo.stopEvent(e);
  27 },onMouseUp:function(e){
  28 if(dojo.isWebKit&&dojo.isMac&&this.mouseButton==2?e.button==0:this.mouseButton==e.button){
  29 this.destroy();
  30 }
  31 dojo.stopEvent(e);
  32 },onFirstMove:function(e){
  33 var s=this.node.style,l,t,h=this.host;
  34 switch(s.position){
  35 case "relative":
  36 case "absolute":
  37 l=Math.round(parseFloat(s.left))||0;
  38 t=Math.round(parseFloat(s.top))||0;
  39 break;
  40 default:
  41 s.position="absolute";
  42 var m=dojo.marginBox(this.node);
  43 var b=dojo.doc.body;
  44 var bs=dojo.getComputedStyle(b);
  45 var bm=dojo._getMarginBox(b,bs);
  46 var bc=dojo._getContentBox(b,bs);
  47 l=m.l-(bc.l-bm.l);
  48 t=m.t-(bc.t-bm.t);
  49 break;
  50 }
  51 this.marginBox.l=l-this.marginBox.l;
  52 this.marginBox.t=t-this.marginBox.t;
  53 if(h&&h.onFirstMove){
  54 h.onFirstMove(this,e);
  55 }
  56 dojo.disconnect(this.events.pop());
  57 },destroy:function(){
  58 dojo.forEach(this.events,dojo.disconnect);
  59 var h=this.host;
  60 if(h&&h.onMoveStop){
  61 h.onMoveStop(this);
  62 }
  63 this.events=this.node=this.host=null;
  64 }});
  65 }