| /* |
| 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.autoscroll"]){ |
| dojo._hasResource["dojo.dnd.autoscroll"]=true; |
| dojo.provide("dojo.dnd.autoscroll"); |
| dojo.dnd.getViewport=function(){ |
| var d=dojo.doc,dd=d.documentElement,w=window,b=dojo.body(); |
| if(dojo.isMozilla){ |
| return {w:dd.clientWidth,h:w.innerHeight}; |
| }else{ |
| if(!dojo.isOpera&&w.innerWidth){ |
| return {w:w.innerWidth,h:w.innerHeight}; |
| }else{ |
| if(!dojo.isOpera&&dd&&dd.clientWidth){ |
| return {w:dd.clientWidth,h:dd.clientHeight}; |
| }else{ |
| if(b.clientWidth){ |
| return {w:b.clientWidth,h:b.clientHeight}; |
| } |
| } |
| } |
| } |
| return null; |
| }; |
| dojo.dnd.V_TRIGGER_AUTOSCROLL=32; |
| dojo.dnd.H_TRIGGER_AUTOSCROLL=32; |
| dojo.dnd.V_AUTOSCROLL_VALUE=16; |
| dojo.dnd.H_AUTOSCROLL_VALUE=16; |
| dojo.dnd.autoScroll=function(e){ |
| var v=dojo.dnd.getViewport(),dx=0,dy=0; |
| if(e.clientX<dojo.dnd.H_TRIGGER_AUTOSCROLL){ |
| dx=-dojo.dnd.H_AUTOSCROLL_VALUE; |
| }else{ |
| if(e.clientX>v.w-dojo.dnd.H_TRIGGER_AUTOSCROLL){ |
| dx=dojo.dnd.H_AUTOSCROLL_VALUE; |
| } |
| } |
| if(e.clientY<dojo.dnd.V_TRIGGER_AUTOSCROLL){ |
| dy=-dojo.dnd.V_AUTOSCROLL_VALUE; |
| }else{ |
| if(e.clientY>v.h-dojo.dnd.V_TRIGGER_AUTOSCROLL){ |
| dy=dojo.dnd.V_AUTOSCROLL_VALUE; |
| } |
| } |
| window.scrollBy(dx,dy); |
| }; |
| dojo.dnd._validNodes={"div":1,"p":1,"td":1}; |
| dojo.dnd._validOverflow={"auto":1,"scroll":1}; |
| dojo.dnd.autoScrollNodes=function(e){ |
| for(var n=e.target;n;){ |
| if(n.nodeType==1&&(n.tagName.toLowerCase() in dojo.dnd._validNodes)){ |
| var s=dojo.getComputedStyle(n); |
| if(s.overflow.toLowerCase() in dojo.dnd._validOverflow){ |
| var b=dojo._getContentBox(n,s),t=dojo.position(n,true); |
| var w=Math.min(dojo.dnd.H_TRIGGER_AUTOSCROLL,b.w/2),h=Math.min(dojo.dnd.V_TRIGGER_AUTOSCROLL,b.h/2),rx=e.pageX-t.x,ry=e.pageY-t.y,dx=0,dy=0; |
| if(dojo.isWebKit||dojo.isOpera){ |
| rx+=dojo.body().scrollLeft,ry+=dojo.body().scrollTop; |
| } |
| if(rx>0&&rx<b.w){ |
| if(rx<w){ |
| dx=-w; |
| }else{ |
| if(rx>b.w-w){ |
| dx=w; |
| } |
| } |
| } |
| if(ry>0&&ry<b.h){ |
| if(ry<h){ |
| dy=-h; |
| }else{ |
| if(ry>b.h-h){ |
| dy=h; |
| } |
| } |
| } |
| var _1=n.scrollLeft,_2=n.scrollTop; |
| n.scrollLeft=n.scrollLeft+dx; |
| n.scrollTop=n.scrollTop+dy; |
| if(_1!=n.scrollLeft||_2!=n.scrollTop){ |
| return; |
| } |
| } |
| } |
| try{ |
| n=n.parentNode; |
| } |
| catch(x){ |
| n=null; |
| } |
| } |
| dojo.dnd.autoScroll(e); |
| }; |
| } |
