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//>>built
define("dojox/fx/scroll", ["dojo/_base/kernel","dojo/_base/lang", "dojo/_base/fx", "dojox/fx/_base","dojox/fx/_core","dojo/dom-geometry","dojo/_base/sniff"],
function (kernel, lang, baseFx, fxExt, Line, domGeom, has){
kernel.experimental("dojox.fx.scroll");
var fx = lang.getObject("dojox.fx",true);
fxExt.smoothScroll = function(/* Object */args){
// summary: Returns an animation that will smooth-scroll to a node
// description: This implementation support either horizontal or vertical scroll, as well as
// both. In addition, element in iframe can be scrolled to correctly.
// offset: {x: int, y: int} this will be added to the target position
// duration: Duration of the animation in milliseconds.
// win: a node or window object to scroll
if(!args.target){ args.target = domGeom.position(args.node); }
var isWindow = lang[(has("ie") ? "isObject" : "isFunction")](args["win"].scrollTo),
delta = { x: args.target.x, y: args.target.y }
;
if(!isWindow){
var winPos = domGeom.position(args.win);
delta.x -= winPos.x;
delta.y -= winPos.y;
}
var _anim = (isWindow) ?
(function(val){
args.win.scrollTo(val[0],val[1]);
}) :
(function(val){
args.win.scrollLeft = val[0];
args.win.scrollTop = val[1];
});
var anim = new baseFx.Animation(lang.mixin({
beforeBegin: function(){
if(this.curve){ delete this.curve; }
var current = isWindow ? dojo._docScroll() : {x: args.win.scrollLeft, y: args.win.scrollTop};
anim.curve = new Line([current.x,current.y],[current.x + delta.x, current.y + delta.y]);
},
onAnimate: _anim
},args));
return anim; // dojo.Animation
};
fx.smoothScroll = fxExt.smoothScroll;
return fxExt.smoothScroll;
});
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