/**
 * jquery jpages v0.7
 * client side pagination with jquery
 * http://luis-almeida.github.com/jpages
 *
 * licensed under the mit license.
 * copyright 2012 luís almeida
 * https://github.com/luis-almeida
 */

 ;(function($,window,document,undefined){var name="jpages",instance=null,defaults={containerid:"",first:false,previous:"上一页  ",next:"  下一页",last:false,links:"numeric",startpage:1,perpage:10,midrange:5,startrange:1,endrange:1,keybrowse:false,scrollbrowse:false,pause:0,clickstop:false,delay:50,direction:"forward",animation:"",fallback:400,minheight:true,callback:undefined};function plugin(element,options){this.options=$.extend({},defaults,options);this._container=$("#"+this.options.containerid);if(!this._container.length)return;this.jqwindow=$(window);this.jqdocument=$(document);this._holder=$(element);this._nav={};this._first=$(this.options.first);this._previous=$(this.options.previous);this._next=$(this.options.next);this._last=$(this.options.last);this._items=this._container.children(":visible");this._itemsshowing=$([]);this._itemshiding=$([]);this._numpages=math.ceil(this._items.length/this.options.perpage);this._currentpagenum=this.options.startpage;this._clicked=false;this._cssanimsupport=this.getcssanimationsupport();this.init();}plugin.prototype={constructor:plugin,getcssanimationsupport:function(){var animation=false,animationstring='animation',keyframeprefix='',domprefixes='webkit moz o ms khtml'.split(' '),pfx='',elm=this._container.get(0);if(elm.style.animationname)animation=true;if(animation===false){for(var i=0;i<domprefixes.length;i++){if(elm.style[domprefixes[i]+'animationname']!==undefined){pfx=domprefixes[i];animationstring=pfx+'animation';keyframeprefix='-'+pfx.tolowercase()+'-';animation=true;break;}}}return animation;},init:function(){this.setstyles();this.setnav();this.paginate(this._currentpagenum);this.setminheight();},setstyles:function(){var requiredstyles="<style>"+".jp-invisible { visibility: hidden !important; } "+".jp-hidden { display: none !important; }"+"</style>";$(requiredstyles).appendto("head");if(this._cssanimsupport&&this.options.animation.length)this._items.addclass("animated jp-hidden");else this._items.hide();},setnav:function(){var navhtml=this.writenav();this._holder.each(this.bind(function(index,element){var holder=$(element);holder.html(navhtml);this.cachenavelements(holder,index);this.bindnavhandlers(index);this.disablenavselection(element);},this));if(this.options.keybrowse)this.bindnavkeybrowse();if(this.options.scrollbrowse)this.bindnavscrollbrowse();},writenav:function(){var i=1,navhtml;navhtml=this.writebtn("first")+this.writebtn("previous");for(;i<=this._numpages;i++){if(i===1&&this.options.startrange===0)navhtml+="<span>...</span>";if(i>this.options.startrange&&i<=this._numpages-this.options.endrange)navhtml+="<a href='#' class='jp-hidden'>";else
navhtml+="<a>";switch(this.options.links){case"numeric":navhtml+=i;break;case"blank":break;case"title":var title=this._items.eq(i-1).attr("data-title");navhtml+=title!==undefined?title:"";break;}navhtml+="</a>";if(i===this.options.startrange||i===this._numpages-this.options.endrange)navhtml+="<span>...</span>";}navhtml+=this.writebtn("next")+this.writebtn("last")+"</div>";return navhtml;},writebtn:function(which){return this.options[which]!==false&&!$(this["_"+which]).length?"<a class='jp-"+which+"'>"+this.options[which]+"</a>":"";},cachenavelements:function(holder,index){this._nav[index]={};this._nav[index].holder=holder;this._nav[index].first=this._first.length?this._first:this._nav[index].holder.find("a.jp-first");this._nav[index].previous=this._previous.length?this._previous:this._nav[index].holder.find("a.jp-previous");this._nav[index].next=this._next.length?this._next:this._nav[index].holder.find("a.jp-next");this._nav[index].last=this._last.length?this._last:this._nav[index].holder.find("a.jp-last");this._nav[index].fstbreak=this._nav[index].holder.find("span:first");this._nav[index].lstbreak=this._nav[index].holder.find("span:last");this._nav[index].pages=this._nav[index].holder.find("a").not(".jp-first, .jp-previous, .jp-next, .jp-last");this._nav[index].permpages=this._nav[index].pages.slice(0,this.options.startrange).add(this._nav[index].pages.slice(this._numpages-this.options.endrange,this._numpages));this._nav[index].pagesshowing=$([]);this._nav[index].currentpage=$([]);},bindnavhandlers:function(index){var nav=this._nav[index];nav.holder.bind("click.jpages",this.bind(function(evt){var newpage=this.getnewpage(nav,$(evt.target));if(this.validnewpage(newpage)){this._clicked=true;this.paginate(newpage);}evt.preventdefault();},this));if(this._first.length){this._first.bind("click.jpages",this.bind(function(){if(this.validnewpage(1)){this._clicked=true;this.paginate(1);}},this));}if(this._previous.length){this._previous.bind("click.jpages",this.bind(function(){var newpage=this._currentpagenum-1;if(this.validnewpage(newpage)){this._clicked=true;this.paginate(newpage);}},this));}if(this._next.length){this._next.bind("click.jpages",this.bind(function(){var newpage=this._currentpagenum+1;if(this.validnewpage(newpage)){this._clicked=true;this.paginate(newpage);}},this));}if(this._last.length){this._last.bind("click.jpages",this.bind(function(){if(this.validnewpage(this._numpages)){this._clicked=true;this.paginate(this._numpages);}},this));}},disablenavselection:function(element){if(typeof element.onselectstart!="undefined")element.onselectstart=function(){return false;};else if(typeof element.style.mozuserselect!="undefined")element.style.mozuserselect="none";else
element.onmousedown=function(){return false;};},bindnavkeybrowse:function(){this.jqdocument.bind("keydown.jpages",this.bind(function(evt){var target=evt.target.nodename.tolowercase();if(this.elemscrolledintoview()&&target!=="input"&&target!="textarea"){var newpage=this._currentpagenum;if(evt.which==37)newpage=this._currentpagenum-1;if(evt.which==39)newpage=this._currentpagenum+1;if(this.validnewpage(newpage)){this._clicked=true;this.paginate(newpage);}}},this));},elemscrolledintoview:function(){var docviewtop,docviewbottom,elemtop,elembottom;docviewtop=this.jqwindow.scrolltop();docviewbottom=docviewtop+this.jqwindow.height();elemtop=this._container.offset().top;elembottom=elemtop+this._container.height();return((elembottom>=docviewtop)&&(elemtop<=docviewbottom));},bindnavscrollbrowse:function(){this._container.bind("mousewheel.jpages dommousescroll.jpages",this.bind(function(evt){var newpage=(evt.originalevent.wheeldelta||-evt.originalevent.detail)>0?(this._currentpagenum-1):(this._currentpagenum+1);if(this.validnewpage(newpage)){this._clicked=true;this.paginate(newpage);}evt.preventdefault();return false;},this));},getnewpage:function(nav,target){if(target.is(nav.currentpage))return this._currentpagenum;if(target.is(nav.pages))return nav.pages.index(target)+1;if(target.is(nav.first))return 1;if(target.is(nav.last))return this._numpages;if(target.is(nav.previous))return nav.pages.index(nav.currentpage);if(target.is(nav.next))return nav.pages.index(nav.currentpage)+2;},validnewpage:function(newpage){return newpage!==this._currentpagenum&&newpage>0&&newpage<=this._numpages;},paginate:function(page){var itemrange,pageinterval;itemrange=this.updateitems(page);pageinterval=this.updatepages(page);this._currentpagenum=page;if($.isfunction(this.options.callback))this.callback(page,itemrange,pageinterval);this.updatepause();},updateitems:function(page){var range=this.getitemrange(page);this._itemshiding=this._itemsshowing;this._itemsshowing=this._items.slice(range.start,range.end);if(this._cssanimsupport&&this.options.animation.length)this.cssanimations(page);else this.jqanimations(page);return range;},getitemrange:function(page){var range={};range.start=(page-1)*this.options.perpage;range.end=range.start+this.options.perpage;if(range.end>this._items.length)range.end=this._items.length;return range;},cssanimations:function(page){clearinterval(this._delay);this._itemshiding.removeclass(this.options.animation+" jp-invisible").addclass("jp-hidden");this._itemsshowing.removeclass("jp-hidden").addclass("jp-invisible");this._itemsoriented=this.getdirecteditems(page);this._index=0;this._delay=setinterval(this.bind(function(){if(this._index===this._itemsoriented.length)clearinterval(this._delay);else{this._itemsoriented.eq(this._index).removeclass("jp-invisible").addclass(this.options.animation);}this._index=this._index+1;},this),this.options.delay);},jqanimations:function(page){clearinterval(this._delay);this._itemshiding.addclass("jp-hidden");this._itemsshowing.fadeto(0,0).removeclass("jp-hidden");this._itemsoriented=this.getdirecteditems(page);this._index=0;this._delay=setinterval(this.bind(function(){if(this._index===this._itemsoriented.length)clearinterval(this._delay);else{this._itemsoriented.eq(this._index).fadeto(this.options.fallback,1);}this._index=this._index+1;},this),this.options.delay);},getdirecteditems:function(page){var itemstoshow;switch(this.options.direction){case"backwards":itemstoshow=$(this._itemsshowing.get().reverse());break;case"random":itemstoshow=$(this._itemsshowing.get().sort(function(){return(math.round(math.random())-0.5);}));break;case"auto":itemstoshow=page>=this._currentpagenum?this._itemsshowing:$(this._itemsshowing.get().reverse());break;default:itemstoshow=this._itemsshowing;}return itemstoshow;},updatepages:function(page){var interval,index,nav;interval=this.getinterval(page);for(index in this._nav){if(this._nav.hasownproperty(index)){nav=this._nav[index];this.updatebtns(nav,page);this.updatecurrentpage(nav,page);this.updatepagesshowing(nav,interval);this.updatebreaks(nav,interval);}}return interval;},getinterval:function(page){var nehalf,upperlimit,start,end;nehalf=math.ceil(this.options.midrange/2);upperlimit=this._numpages-this.options.midrange;start=page>nehalf?math.max(math.min(page-nehalf,upperlimit),0):0;end=page>nehalf?math.min(page+nehalf-(this.options.midrange%2>0?1:0),this._numpages):math.min(this.options.midrange,this._numpages);return{start:start,end:end};},updatebtns:function(nav,page){if(page===1){nav.first.addclass("jp-disabled");nav.previous.addclass("jp-disabled");}if(page===this._numpages){nav.next.addclass("jp-disabled");nav.last.addclass("jp-disabled");}if(this._currentpagenum===1&&page>1){nav.first.removeclass("jp-disabled");nav.previous.removeclass("jp-disabled");}if(this._currentpagenum===this._numpages&&page<this._numpages){nav.next.removeclass("jp-disabled");nav.last.removeclass("jp-disabled");}},updatecurrentpage:function(nav,page){nav.currentpage.removeclass("jp-current");nav.currentpage=nav.pages.eq(page-1).addclass("jp-current");},updatepagesshowing:function(nav,interval){var newrange=nav.pages.slice(interval.start,interval.end).not(nav.permpages);nav.pagesshowing.not(newrange).addclass("jp-hidden");newrange.not(nav.pagesshowing).removeclass("jp-hidden");nav.pagesshowing=newrange;},updatebreaks:function(nav,interval){if(interval.start>this.options.startrange||(this.options.startrange===0&&interval.start>0))nav.fstbreak.removeclass("jp-hidden");else nav.fstbreak.addclass("jp-hidden");if(interval.end<this._numpages-this.options.endrange)nav.lstbreak.removeclass("jp-hidden");else nav.lstbreak.addclass("jp-hidden");},callback:function(page,itemrange,pageinterval){var pages={current:page,interval:pageinterval,count:this._numpages},items={showing:this._itemsshowing,oncoming:this._items.slice(itemrange.start+this.options.perpage,itemrange.end+this.options.perpage),range:itemrange,count:this._items.length};pages.interval.start=pages.interval.start+1;items.range.start=items.range.start+1;this.options.callback(pages,items);},updatepause:function(){if(this.options.pause&&this._numpages>1){cleartimeout(this._pause);if(this.options.clickstop&&this._clicked)return;else{this._pause=settimeout(this.bind(function(){this.paginate(this._currentpagenum!==this._numpages?this._currentpagenum+1:1);},this),this.options.pause);}}},setminheight:function(){if(this.options.minheight&&!this._container.is("table, tbody")){settimeout(this.bind(function(){this._container.css({"min-height":this._container.css("height")});},this),1000);}},bind:function(fn,me){return function(){return fn.apply(me,arguments);};},destroy:function(){this.jqdocument.unbind("keydown.jpages");this._container.unbind("mousewheel.jpages dommousescroll.jpages");if(this.options.minheight)this._container.css("min-height","");if(this._cssanimsupport&&this.options.animation.length)this._items.removeclass("animated jp-hidden jp-invisible "+this.options.animation);else this._items.removeclass("jp-hidden").fadeto(0,1);this._holder.unbind("click.jpages").empty();}};$.fn[name]=function(arg){var type=$.type(arg);if(type==="object"){if(this.length&&!$.data(this,name)){instance=new plugin(this,arg);this.each(function(){$.data(this,name,instance);});}return this;}if(type==="string"&&arg==="destroy"){instance.destroy();this.each(function(){$.removedata(this,name);});return this;}if(type==='number'&&arg%1===0){if(instance.validnewpage(arg))instance.paginate(arg);return this;}return this;};})(jquery,window,document);