//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2008 Valerio Proietti, <http://mad4milk.net>, MIT Style License.

var Drag=new Class({Implements:[Events,Options],options:{snap:6,unit:'px',grid:false,style:true,limit:false,handle:false,invert:false,preventDefault:false,modifiers:{x:'left',y:'top'}},initialize:function(){var params=Array.link(arguments,{'options':Object.type,'element':$defined});this.element=$(params.element);this.document=this.element.getDocument();this.setOptions(params.options||{});var htype=$type(this.options.handle);this.handles=(htype=='array'||htype=='collection')?$$(this.options.handle):$(this.options.handle)||this.element;this.mouse={'now':{},'pos':{}};this.value={'start':{},'now':{}};this.selection=(Browser.Engine.trident)?'selectstart':'mousedown';this.bound={start:this.start.bind(this),check:this.check.bind(this),drag:this.drag.bind(this),stop:this.stop.bind(this),cancel:this.cancel.bind(this),eventStop:$lambda(false)};this.attach();},attach:function(){this.handles.addEvent('mousedown',this.bound.start);return this;},detach:function(){this.handles.removeEvent('mousedown',this.bound.start);return this;},start:function(event){if(this.options.preventDefault)event.preventDefault();this.fireEvent('beforeStart',this.element);this.mouse.start=event.page;var limit=this.options.limit;this.limit={'x':[],'y':[]};for(var z in this.options.modifiers){if(!this.options.modifiers[z])continue;if(this.options.style)this.value.now[z]=this.element.getStyle(this.options.modifiers[z]).toInt();else this.value.now[z]=this.element[this.options.modifiers[z]];if(this.options.invert)this.value.now[z]*=-1;this.mouse.pos[z]=event.page[z]-this.value.now[z];if(limit&&limit[z]){for(var i=2;i--;i){if($chk(limit[z][i]))this.limit[z][i]=$lambda(limit[z][i])();}}}
if($type(this.options.grid)=='number')this.options.grid={'x':this.options.grid,'y':this.options.grid};this.document.addEvents({mousemove:this.bound.check,mouseup:this.bound.cancel});this.document.addEvent(this.selection,this.bound.eventStop);},check:function(event){if(this.options.preventDefault)event.preventDefault();var distance=Math.round(Math.sqrt(Math.pow(event.page.x-this.mouse.start.x,2)+Math.pow(event.page.y-this.mouse.start.y,2)));if(distance>this.options.snap){this.cancel();this.document.addEvents({mousemove:this.bound.drag,mouseup:this.bound.stop});this.fireEvent('start',this.element).fireEvent('snap',this.element);}},drag:function(event){if(this.options.preventDefault)event.preventDefault();this.mouse.now=event.page;for(var z in this.options.modifiers){if(!this.options.modifiers[z])continue;this.value.now[z]=this.mouse.now[z]-this.mouse.pos[z];if(this.options.invert)this.value.now[z]*=-1;if(this.options.limit&&this.limit[z]){if($chk(this.limit[z][1])&&(this.value.now[z]>this.limit[z][1])){this.value.now[z]=this.limit[z][1];}else if($chk(this.limit[z][0])&&(this.value.now[z]<this.limit[z][0])){this.value.now[z]=this.limit[z][0];}}
if(this.options.grid[z])this.value.now[z]-=(this.value.now[z]%this.options.grid[z]);if(this.options.style)this.element.setStyle(this.options.modifiers[z],this.value.now[z]+this.options.unit);else this.element[this.options.modifiers[z]]=this.value.now[z];}
this.fireEvent('drag',this.element);},cancel:function(event){this.document.removeEvent('mousemove',this.bound.check);this.document.removeEvent('mouseup',this.bound.cancel);if(event){this.document.removeEvent(this.selection,this.bound.eventStop);this.fireEvent('cancel',this.element);}},stop:function(event){this.document.removeEvent(this.selection,this.bound.eventStop);this.document.removeEvent('mousemove',this.bound.drag);this.document.removeEvent('mouseup',this.bound.stop);if(event)this.fireEvent('complete',this.element);}});Element.implement({makeResizable:function(options){return new Drag(this,$merge({modifiers:{'x':'width','y':'height'}},options));}});Drag.Move=new Class({Extends:Drag,options:{droppables:[],container:false},initialize:function(element,options){this.parent(element,options);this.droppables=$$(this.options.droppables);this.container=$(this.options.container);if(this.container&&$type(this.container)!='element')this.container=$(this.container.getDocument().body);element=this.element;var current=element.getStyle('position');var position=(current!='static')?current:'absolute';if(element.getStyle('left')=='auto'||element.getStyle('top')=='auto')element.position(element.getPosition(element.offsetParent));element.setStyle('position',position);this.addEvent('start',function(){this.checkDroppables();},true);},start:function(event){if(this.container){var el=this.element,cont=this.container,ccoo=cont.getCoordinates(el.offsetParent),cps={},ems={};['top','right','bottom','left'].each(function(pad){cps[pad]=cont.getStyle('padding-'+pad).toInt();ems[pad]=el.getStyle('margin-'+pad).toInt();},this);var width=el.offsetWidth+ems.left+ems.right,height=el.offsetHeight+ems.top+ems.bottom;var x=[ccoo.left+cps.left,ccoo.right-cps.right-width];var y=[ccoo.top+cps.top,ccoo.bottom-cps.bottom-height];this.options.limit={x:x,y:y};}
this.parent(event);},checkAgainst:function(el){el=el.getCoordinates();var now=this.mouse.now;return(now.x>el.left&&now.x<el.right&&now.y<el.bottom&&now.y>el.top);},checkDroppables:function(){var overed=this.droppables.filter(this.checkAgainst,this).getLast();if(this.overed!=overed){if(this.overed)this.fireEvent('leave',[this.element,this.overed]);if(overed){this.overed=overed;this.fireEvent('enter',[this.element,overed]);}else{this.overed=null;}}},drag:function(event){this.parent(event);if(this.droppables.length)this.checkDroppables();},stop:function(event){this.checkDroppables();this.fireEvent('drop',[this.element,this.overed]);this.overed=null;return this.parent(event);}});Element.implement({makeDraggable:function(options){return new Drag.Move(this,options);}});var Tips=new Class({Implements:[Events,Options],options:{onShow:function(tip){tip.setStyle('visibility','visible');},onHide:function(tip){tip.setStyle('visibility','hidden');},showDelay:100,hideDelay:100,className:null,offsets:{x:16,y:16},fixed:false},initialize:function(){var params=Array.link(arguments,{options:Object.type,elements:$defined});this.setOptions(params.options||null);this.tip=new Element('div').inject(document.body);if(this.options.className)this.tip.addClass(this.options.className);var top=new Element('div',{'class':'tip-top'}).inject(this.tip);this.container=new Element('div',{'class':'tip'}).inject(this.tip);var bottom=new Element('div',{'class':'tip-bottom'}).inject(this.tip);this.tip.setStyles({position:'absolute',top:0,left:0,visibility:'hidden'});if(params.elements)this.attach(params.elements);},attach:function(elements){$$(elements).each(function(element){var title=element.retrieve('tip:title',element.get('title'));var text=element.retrieve('tip:text',element.get('rel')||element.get('href'));var enter=element.retrieve('tip:enter',this.elementEnter.bindWithEvent(this,element));var leave=element.retrieve('tip:leave',this.elementLeave.bindWithEvent(this,element));element.addEvents({mouseenter:enter,mouseleave:leave});if(!this.options.fixed){var move=element.retrieve('tip:move',this.elementMove.bindWithEvent(this,element));element.addEvent('mousemove',move);}
element.store('tip:native',element.get('title'));element.erase('title');},this);return this;},detach:function(elements){$$(elements).each(function(element){element.removeEvent('mouseenter',element.retrieve('tip:enter')||$empty);element.removeEvent('mouseleave',element.retrieve('tip:leave')||$empty);element.removeEvent('mousemove',element.retrieve('tip:move')||$empty);element.eliminate('tip:enter').eliminate('tip:leave').eliminate('tip:move');var original=element.retrieve('tip:native');if(original)element.set('title',original);});return this;},elementEnter:function(event,element){$A(this.container.childNodes).each(Element.dispose);var title=element.retrieve('tip:title');if(title){this.titleElement=new Element('div',{'class':'tip-title'}).inject(this.container);this.fill(this.titleElement,title);}
var text=element.retrieve('tip:text');if(text){this.textElement=new Element('div',{'class':'tip-text'}).inject(this.container);this.fill(this.textElement,text);}
this.timer=$clear(this.timer);this.timer=this.show.delay(this.options.showDelay,this);this.position((!this.options.fixed)?event:{page:element.getPosition()});},elementLeave:function(event){$clear(this.timer);this.timer=this.hide.delay(this.options.hideDelay,this);},elementMove:function(event){this.position(event);},position:function(event){var size=window.getSize(),scroll=window.getScroll();var tip={x:this.tip.offsetWidth,y:this.tip.offsetHeight};var props={x:'left',y:'top'};for(var z in props){var pos=event.page[z]+this.options.offsets[z];if((pos+tip[z]-scroll[z])>size[z])pos=event.page[z]-this.options.offsets[z]-tip[z];this.tip.setStyle(props[z],pos);}},fill:function(element,contents){(typeof contents=='string')?element.set('html',contents):element.adopt(contents);},show:function(){this.fireEvent('show',this.tip);},hide:function(){this.fireEvent('hide',this.tip);}});