97 lines
2.0 KiB
JavaScript
97 lines
2.0 KiB
JavaScript
/*
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Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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//>>built
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define("dojo/dnd/autoscroll",["../main","../window"],function(_1){
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_1.getObject("dnd",true,_1);
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_1.dnd.getViewport=_1.window.getBox;
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_1.dnd.V_TRIGGER_AUTOSCROLL=32;
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_1.dnd.H_TRIGGER_AUTOSCROLL=32;
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_1.dnd.V_AUTOSCROLL_VALUE=16;
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_1.dnd.H_AUTOSCROLL_VALUE=16;
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_1.dnd.autoScroll=function(e){
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var v=_1.window.getBox(),dx=0,dy=0;
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if(e.clientX<_1.dnd.H_TRIGGER_AUTOSCROLL){
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dx=-_1.dnd.H_AUTOSCROLL_VALUE;
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}else{
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if(e.clientX>v.w-_1.dnd.H_TRIGGER_AUTOSCROLL){
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dx=_1.dnd.H_AUTOSCROLL_VALUE;
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}
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}
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if(e.clientY<_1.dnd.V_TRIGGER_AUTOSCROLL){
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dy=-_1.dnd.V_AUTOSCROLL_VALUE;
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}else{
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if(e.clientY>v.h-_1.dnd.V_TRIGGER_AUTOSCROLL){
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dy=_1.dnd.V_AUTOSCROLL_VALUE;
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}
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}
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window.scrollBy(dx,dy);
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};
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_1.dnd._validNodes={"div":1,"p":1,"td":1};
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_1.dnd._validOverflow={"auto":1,"scroll":1};
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_1.dnd.autoScrollNodes=function(e){
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var b,t,w,h,rx,ry,dx=0,dy=0,_2,_3;
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for(var n=e.target;n;){
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if(n.nodeType==1&&(n.tagName.toLowerCase() in _1.dnd._validNodes)){
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var s=_1.getComputedStyle(n),_4=(s.overflow.toLowerCase() in _1.dnd._validOverflow),_5=(s.overflowX.toLowerCase() in _1.dnd._validOverflow),_6=(s.overflowY.toLowerCase() in _1.dnd._validOverflow);
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if(_4||_5||_6){
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b=_1._getContentBox(n,s);
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t=_1.position(n,true);
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}
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if(_4||_5){
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w=Math.min(_1.dnd.H_TRIGGER_AUTOSCROLL,b.w/2);
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rx=e.pageX-t.x;
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if(_1.isWebKit||_1.isOpera){
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rx+=_1.body().scrollLeft;
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}
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dx=0;
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if(rx>0&&rx<b.w){
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if(rx<w){
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dx=-w;
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}else{
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if(rx>b.w-w){
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dx=w;
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}
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}
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_2=n.scrollLeft;
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n.scrollLeft=n.scrollLeft+dx;
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}
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}
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if(_4||_6){
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h=Math.min(_1.dnd.V_TRIGGER_AUTOSCROLL,b.h/2);
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ry=e.pageY-t.y;
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if(_1.isWebKit||_1.isOpera){
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ry+=_1.body().scrollTop;
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}
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dy=0;
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if(ry>0&&ry<b.h){
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if(ry<h){
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dy=-h;
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}else{
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if(ry>b.h-h){
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dy=h;
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}
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}
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_3=n.scrollTop;
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n.scrollTop=n.scrollTop+dy;
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}
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}
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if(dx||dy){
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return;
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}
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}
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try{
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n=n.parentNode;
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}
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catch(x){
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n=null;
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}
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}
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_1.dnd.autoScroll(e);
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};
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return _1.dnd;
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});
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