Playing with Google closure

compiled.js

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function Lb(a,b,c){var d;d=a.d?new T(Db(a.d)):vb||(vb=new T);d=Ab(d.d);b+=d.x-a.w.x;c+=d.y-a.w.y;a.w=d;a.r+=b;a.s+=c;return new tb(Jb(a,a.r),Kb(a,a.s))}n.ja=function(a){var b=Lb(this,0,0);a.clientX=this.w.x-this.clientX;a.clientY=this.w.y-this.clientY;Mb(this,a,b.x,b.y)};function Mb(a,b,c,d){a.target.style.left=c+"px";a.target.style.top=d+"px";a.dispatchEvent(new Ib("drag",a,b.clientX,b.clientY,b,c,d))}
function Jb(a,b){var c=a.Y,d=!isNaN(c.left)?c.left:i,c=!isNaN(c.width)?c.width:0;return Math.min(d!=i?d+c:Infinity,Math.max(d!=i?d:-Infinity,b))}function Kb(a,b){var c=a.Y,d=!isNaN(c.top)?c.top:i,c=!isNaN(c.height)?c.height:0;return Math.min(d!=i?d+c:Infinity,Math.max(d!=i?d:-Infinity,b))}function Ib(a,b,c,d,f,e,g,j){F.call(this,a);this.clientX=c;this.clientY=d;this.na=f;this.left=e!==h?e:b.r;this.top=g!==h?g:b.s;this.qa=b;this.pa=!!j}u(Ib,F);function Nb(a){var b=a.style,a="";"opacity"in b?a=b.opacity:"MozOpacity"in b?a=b.MozOpacity:"filter"in b&&(b=b.filter.match(/alpha\(opacity=([\d.]+)\)/))&&(a=String(b[1]/100));return a==""?a:Number(a)};var Ob=o.window;function V(a,b,c,d){E.call(this);if(!q(a)||!q(b))throw Error("Start and end parameters must be arrays");if(a.length!=b.length)throw Error("Start and end points must be the same length");this.B=a;this.ea=b;this.duration=c;this.O=d;this.coords=[]}u(V,U);var C={},W=i;function Pb(){Ob.clearTimeout(W);var a=fa(),b;for(b in C)Qb(C[b],a);W=Fa()?i:Ob.setTimeout(Pb,20)}function Rb(a){a=t(a);delete C[a];W&&Fa()&&(Ob.clearTimeout(W),W=i)}n=V.prototype;n.g=0;n.V=0;n.c=0;n.startTime=i;n.U=i;n.I=i;
n.play=function(a){if(a||this.g==0)this.c=0,this.coords=this.B;else if(this.g==1)return!1;Rb(this);this.startTime=fa();this.g==-1&&(this.startTime-=this.duration*this.c);this.U=this.startTime+this.duration;this.I=this.startTime;this.c||this.v();X(this,"play");this.g==-1&&this.L();this.g=1;a=t(this);a in C||(C[a]=this);W||(W=Ob.setTimeout(Pb,20));Qb(this,this.startTime);return!0};n.stop=function(a){Rb(this);this.g=0;if(a)this.c=1;Sb(this,this.c);this.M();this.F()};
n.a=function(){this.g!=0&&this.stop(!1);this.K();V.b.a.call(this)};function Qb(a,b){a.c=(b-a.startTime)/(a.U-a.startTime);if(a.c>=1)a.c=1;a.V=1E3/(b-a.I);a.I=b;Sb(a,a.c);a.c==1?(a.g=0,Rb(a),X(a,"finish"),a.F()):a.g==1&&a.J()}function Sb(a,b){s(a.O)&&(b=a.O(b));a.coords=Array(a.B.length);for(var c=0;c<a.B.length;c++)a.coords[c]=(a.ea[c]-a.B[c])*b+a.B[c]}n.J=function(){X(this,"animate")};n.v=function(){X(this,"begin")};n.K=function(){X(this,"destroy")};n.F=function(){X(this,"end")};
n.L=function(){X(this,"resume")};n.M=function(){X(this,"stop")};function X(a,b){a.dispatchEvent(new Tb(b,a))}function Tb(a,b){F.call(this,a);this.coords=b.coords;this.x=b.coords[0];this.y=b.coords[1];this.sa=b.coords[2];this.duration=b.duration;this.c=b.c;this.ra=b.V;this.state=b.g;this.ma=b}u(Tb,F);function Y(a,b,c,d,f){V.call(this,b,c,d,f);this.element=a}u(Y,V);Y.prototype.G=p;Y.prototype.J=function(){this.G();Y.b.J.call(this)};Y.prototype.F=function(){this.G();Y.b.F.call(this)};Y.prototype.v=function(){this.G();Y.b.v.call(this)};function Ub(a,b,c,d,f){typeof b=="number"&&(b=[b]);typeof c=="number"&&(c=[c]);Y.call(this,a,b,c,d,f);if(b.length!=1||c.length!=1)throw Error("Start and end points must be 1D");}u(Ub,Y);
Ub.prototype.G=function(){var a=this.coords[0],b=this.element.style;if("opacity"in b)b.opacity=a;else if("MozOpacity"in b)b.MozOpacity=a;else if("filter"in b)b.filter=a===""?"":"alpha(opacity="+a*100+")"};function Z(){V.call(this,[0],[0],0);this.z=[]}u(Z,V);Z.prototype.L=function(){Vb(this,function(a){a.play(a.c==0)});Z.b.L.call(this)};Z.prototype.M=function(){Vb(this,function(a){a.stop()});Z.b.M.call(this)};Z.prototype.K=function(){Wb(this);Z.b.K.call(this)};function Wb(a){Ja(a.z,function(a){a.k()})}function Xb(){Z.call(this)}u(Xb,Z);Xb.prototype.v=function(){for(var a=0;a<this.z.length;a++)this.z[a].play();Xb.b.v.call(this)};function Vb(a,b){Ja(a.z,b)}
Xb.prototype.add=function(a){this.z.push(a);this.duration=Math.max(this.duration,a.duration)};function Yb(){var a=i,a=Bb("div"),b=new Xb;document.body.appendChild(a);a=new Eb(a,a);O(a,"start",function(){b.stop();b.add(new Ub(this.target,Nb(this.target)||1,0.5,100));b.play()});O(a,"end",function(){b.stop();b.add(new Ub(this.target,Nb(this.target)||0.5,1,100));b.play()})}var Zb="closuretest.main".split("."),$=o;!(Zb[0]in $)&&$.execScript&&$.execScript("var "+Zb[0]);for(var $b;Zb.length&&($b=Zb.shift());)!Zb.length&&Yb!==h?$[$b]=Yb:$=$[$b]?$[$b]:$[$b]={};

normal.js

// Set up namespace
goog.provide('closuretest.main');

// Require namespaces
goog.require('goog.dom');
goog.require('goog.fx.Dragger');
goog.require('goog.style');
goog.require('goog.fx');
goog.require('goog.fx.dom');
goog.require('goog.fx.AnimationParallelQueue');

closuretest.main = function() {
	// Initialise variables
	var dragger = null,
		target = goog.dom.createDom('div'),
		animation = new goog.fx.AnimationParallelQueue();
	
	// Append the div
	goog.dom.appendChild(document.body, target);
	
	// Set up the dragger
	dragger = new goog.fx.Dragger(target, target);
	
	// Listen for the start and end of dragging
	goog.events.listen(dragger, 'start', function(e) {
		animation.stop();
		animation.add(new goog.fx.dom.Fade(this.target, goog.style.getOpacity(this.target) || 1, .5, 100));
		animation.play();
	});
	
	goog.events.listen(dragger, 'end', function(e) {
		animation.stop();
		animation.add(new goog.fx.dom.Fade(this.target, goog.style.getOpacity(this.target) || .5, 1, 100));
		animation.play();
	});
};

goog.exportSymbol('closuretest.main', closuretest.main);