/* Clientcide Copyright (c) 2006-2009, http://www.clientcide.com/wiki/cnet-libraries#license*/

//Contents: Clientcide, MooScroller

//This lib: http://www.clientcide.com/js/build.php?excludeLibs[]=mootools-core&excludeLibs[]=mootools-more&require[]=MooScroller&compression=jsmin


var Clientcide={version:'%build%',assetLocation:"http://github.com/anutron/clientcide/raw/master/Assets",setAssetLocation:function(baseHref){Clientcide.assetLocation=baseHref;if(Clientcide.preloaded)Clientcide.preLoadCss();},preLoadCss:function(){if(window.StickyWin&&StickyWin.ui)StickyWin.ui();if(window.StickyWin&&StickyWin.pointy)StickyWin.pointy();Clientcide.preloaded=true;return true;},preloaded:false};(function(){if(!window.addEvent)return;var preload=function(){if(window.dbug)dbug.log('preloading clientcide css');if(!Clientcide.preloaded)Clientcide.preLoadCss();};window.addEvent('domready',preload);window.addEvent('load',preload);})();setCNETAssetBaseHref=Clientcide.setAssetLocation;
var MooScroller=new Class({Implements:[Options,Events],options:{maxThumbSize:10,mode:'vertical',width:0,scrollSteps:10,wheel:true,scrollLinks:{forward:'scrollForward',back:'scrollBack'},hideWhenNoOverflow:true},initialize:function(content,knob,options){this.setOptions(options);this.horz=(this.options.mode=="horizontal");this.content=document.id(content).setStyle('overflow','hidden');this.knob=document.id(knob);this.track=this.knob.getParent();this.setPositions();if(this.horz&&this.options.width){this.wrapper=new Element('div');this.content.getChildren().each(function(child){this.wrapper.adopt(child);},this);this.wrapper.inject(this.content).setStyle('width',this.options.width);}
this.bound={'start':this.start.bind(this),'end':this.end.bind(this),'drag':this.drag.bind(this),'wheel':this.wheel.bind(this),'page':this.page.bind(this)};this.position={};this.mouse={};this.update();this.attach();this.clearScroll=function(){$clear(this.scrolling);}.bind(this);['forward','back'].each(function(direction){var lnk=document.id(this.options.scrollLinks[direction]);if(lnk){lnk.addEvents({mousedown:function(){this.scrolling=this[direction].periodical(50,this);}.bind(this),mouseup:this.clearScroll.bind(this),click:this.clearScroll.bind(this)});}},this);this.knob.addEvent('click',this.clearScroll.bind(this));window.addEvent('domready',function(){try{document.id(document.body).addEvent('mouseup',this.clearScroll);}catch(e){}}.bind(this));},setPositions:function(){[this.track,this.knob].each(function(el){if(el.getStyle('position')=='static')el.setStyle('position','relative');});},toElement:function(){return this.content;},update:function(){var plain=this.horz?'Width':'Height';this.contentSize=this.content['offset'+plain];this.contentScrollSize=this.content['scroll'+plain];this.trackSize=this.track['offset'+plain];this.contentRatio=this.contentSize/this.contentScrollSize;this.knobSize=(this.trackSize*this.contentRatio).limit(this.options.maxThumbSize,this.trackSize);if(this.options.hideWhenNoOverflow){this.hidden=this.knobSize==this.trackSize;this.track.setStyle('opacity',this.hidden?0:1);}
this.scrollRatio=this.contentScrollSize/this.trackSize;this.knob.setStyle(plain.toLowerCase(),this.knobSize);this.updateThumbFromContentScroll();this.updateContentFromThumbPosition();},updateContentFromThumbPosition:function(){this.content[this.horz?'scrollLeft':'scrollTop']=this.position.now*this.scrollRatio;},updateThumbFromContentScroll:function(){this.position.now=(this.content[this.horz?'scrollLeft':'scrollTop']/this.scrollRatio).limit(0,(this.trackSize-this.knobSize));this.knob.setStyle(this.horz?'left':'top',this.position.now);},attach:function(){this.knob.addEvent('mousedown',this.bound.start);if(this.options.scrollSteps)this.content.addEvent('mousewheel',this.bound.wheel);this.track.addEvent('mouseup',this.bound.page);},detach:function(){this.knob.removeEvent('mousedown',this.bound.start);if(this.options.scrollSteps)this.content.removeEvent('mousewheel',this.bound.wheel);this.track.removeEvent('mouseup',this.bound.page);document.id(document.body).removeEvent('mouseup',this.clearScroll);},wheel:function(event){if(this.hidden)return;this.scroll(-(event.wheel*this.options.scrollSteps));this.updateThumbFromContentScroll();event.stop();},scroll:function(steps){steps=steps||this.options.scrollSteps;this.content[this.horz?'scrollLeft':'scrollTop']+=steps;this.updateThumbFromContentScroll();this.fireEvent('onScroll',steps);},forward:function(steps){this.scroll(steps);},back:function(steps){steps=steps||this.options.scrollSteps;this.scroll(-steps);},page:function(event){var axis=this.horz?'x':'y';var forward=(event.page[axis]>this.knob.getPosition()[axis]);this.scroll((forward?1:-1)*this.content['offset'+(this.horz?'Width':'Height')]);this.updateThumbFromContentScroll();this.fireEvent('onPage',forward);event.stop();},start:function(event){var axis=this.horz?'x':'y';this.mouse.start=event.page[axis];this.position.start=this.knob.getStyle(this.horz?'left':'top').toInt();document.addEvent('mousemove',this.bound.drag);document.addEvent('mouseup',this.bound.end);this.knob.addEvent('mouseup',this.bound.end);event.stop();},end:function(event){document.removeEvent('mousemove',this.bound.drag);document.removeEvent('mouseup',this.bound.end);this.knob.removeEvent('mouseup',this.bound.end);event.stop();},drag:function(event){var axis=this.horz?'x':'y';this.mouse.now=event.page[axis];this.position.now=(this.position.start+(this.mouse.now-this.mouse.start)).limit(0,(this.trackSize-this.knobSize));this.updateContentFromThumbPosition();this.updateThumbFromContentScroll();event.stop();}});