mootools.smoothscroll.js

// MooTools: the javascript framework.
// Load this file's selection again by visiting: http://mootools.net/more/fe04970d7745efe97313a8bd34209ad4 
// Or build this file again with packager using: packager build More/More More/Fx.Scroll More/Fx.SmoothScroll
/*
---
copyrights:
  - [MooTools](http://mootools.net)

licenses:
  - [MIT License](http://mootools.net/license.txt)
...
*/
MooTools.More={version:"1.4.0.1",build:"a4244edf2aa97ac8a196fc96082dd35af1abab87"};(function(){Fx.Scroll=new Class({Extends:Fx,options:{offset:{x:0,y:0},wheelStops:true},initialize:function(c,b){this.element=this.subject=document.id(c);
this.parent(b);if(typeOf(this.element)!="element"){this.element=document.id(this.element.getDocument().body);}if(this.options.wheelStops){var d=this.element,e=this.cancel.pass(false,this);
this.addEvent("start",function(){d.addEvent("mousewheel",e);},true);this.addEvent("complete",function(){d.removeEvent("mousewheel",e);},true);}},set:function(){var b=Array.flatten(arguments);
if(Browser.firefox){b=[Math.round(b[0]),Math.round(b[1])];}this.element.scrollTo(b[0],b[1]);return this;},compute:function(d,c,b){return[0,1].map(function(e){return Fx.compute(d[e],c[e],b);
});},start:function(c,d){if(!this.check(c,d)){return this;}var b=this.element.getScroll();return this.parent([b.x,b.y],[c,d]);},calculateScroll:function(g,f){var d=this.element,b=d.getScrollSize(),h=d.getScroll(),j=d.getSize(),c=this.options.offset,i={x:g,y:f};
for(var e in i){if(!i[e]&&i[e]!==0){i[e]=h[e];}if(typeOf(i[e])!="number"){i[e]=b[e]-j[e];}i[e]+=c[e];}return[i.x,i.y];},toTop:function(){return this.start.apply(this,this.calculateScroll(false,0));
},toLeft:function(){return this.start.apply(this,this.calculateScroll(0,false));},toRight:function(){return this.start.apply(this,this.calculateScroll("right",false));
},toBottom:function(){return this.start.apply(this,this.calculateScroll(false,"bottom"));},toElement:function(d,e){e=e?Array.from(e):["x","y"];var c=a(this.element)?{x:0,y:0}:this.element.getScroll();
var b=Object.map(document.id(d).getPosition(this.element),function(g,f){return e.contains(f)?g+c[f]:false;});return this.start.apply(this,this.calculateScroll(b.x,b.y));
},toElementEdge:function(d,g,e){g=g?Array.from(g):["x","y"];d=document.id(d);var i={},f=d.getPosition(this.element),j=d.getSize(),h=this.element.getScroll(),b=this.element.getSize(),c={x:f.x+j.x,y:f.y+j.y};
["x","y"].each(function(k){if(g.contains(k)){if(c[k]>h[k]+b[k]){i[k]=c[k]-b[k];}if(f[k]<h[k]){i[k]=f[k];}}if(i[k]==null){i[k]=h[k];}if(e&&e[k]){i[k]=i[k]+e[k];
}},this);if(i.x!=h.x||i.y!=h.y){this.start(i.x,i.y);}return this;},toElementCenter:function(e,f,h){f=f?Array.from(f):["x","y"];e=document.id(e);var i={},c=e.getPosition(this.element),d=e.getSize(),b=this.element.getScroll(),g=this.element.getSize();
["x","y"].each(function(j){if(f.contains(j)){i[j]=c[j]-(g[j]-d[j])/2;}if(i[j]==null){i[j]=b[j];}if(h&&h[j]){i[j]=i[j]+h[j];}},this);if(i.x!=b.x||i.y!=b.y){this.start(i.x,i.y);
}return this;}});function a(b){return(/^(?:body|html)$/i).test(b.tagName);}})();Fx.SmoothScroll=new Class({Extends:Fx.Scroll,options:{axes:["x","y"]},initialize:function(c,d){d=d||document;
this.doc=d.getDocument();this.parent(this.doc,c);var e=d.getWindow(),a=e.location.href.match(/^[^#]*/)[0]+"#",b=$$(this.options.links||this.doc.links);
b.each(function(g){if(g.href.indexOf(a)!=0){return;}var f=g.href.substr(a.length);if(f){this.useLink(g,f);}},this);this.addEvent("complete",function(){e.location.hash=this.anchor;
this.element.scrollTo(this.to[0],this.to[1]);},true);},useLink:function(b,a){b.addEvent("click",function(d){var c=document.id(a)||this.doc.getElement("a[name="+a+"]");
if(!c){return;}d.preventDefault();this.toElement(c,this.options.axes).chain(function(){this.fireEvent("scrolledTo",[b,c]);}.bind(this));this.anchor=a;}.bind(this));
return this;}});