//Featured Content Glider: By http://www.dynamicdrive.com

//Created: Dec 22nd, 07'

//Updated (Jan 29th, 08): Added four possible slide directions: "updown", "downup", "leftright", or "rightleft"

//Updated (Feb 1st, 08): Changed glide behavior to reverse direction when previous button is clicked

//Updated (Feb 12th, 08): Added ability to retrieve gliding contents from an external file using Ajax ("remotecontent" variable added to configuration)

//Updated (July 21st, 09): Updated to work in jQuery 1.3.x

//Updated (Dec 13th, 09): Added keyboard navigation, so left/ right arrow keys now move glider. Fixed bug with auto rotation when "next" link isn't defined.



jQuery.noConflict()



var featuredcontentglider={

    leftrightkeys: [37, 39], //keycodes to move glider back and forth 1 slide, respectively. Enter [] to disable feature.

    csszindex: 100,

    ajaxloadingmsg: '<b>Lütfen Bekleyiniz...</b>',



    glide:function(config, showpage, isprev){

        var selected=parseInt(showpage)

        if (selected>=config.$contentdivs.length){ //if no content exists at this index position

            alert("No content exists at page "+(selected+1)+"! Loading 1st page instead.")

            selected=0

        }

        var $target=config.$contentdivs.eq(selected)

        //Test for toggler not being initialized yet, or user clicks on the currently selected page):

        if (config.$togglerdiv.attr('lastselected')==null || parseInt(config.$togglerdiv.attr('lastselected'))!=selected){

            var $selectedlink=config.$toc.eq(selected)

            config.nextslideindex=(selected<config.$contentdivs.length-1)? selected+1 : 0

            config.prevslideindex=(selected==0)? config.$contentdivs.length-1 : selected-1

            config.$next.attr('loadpage', config.nextslideindex+"pg") //store slide index to go to when "next" link is clicked on

            config.$prev.attr('loadpage', config.prevslideindex+'pg')

            var startpoint=(isprev=="previous")? -config.startpoint : config.startpoint

            $target.css(config.leftortop, startpoint).css("zIndex", this.csszindex++) //hide content so it's just out of view before animating it

            var endpoint=(config.leftortop=="left")? {left:0} : {top:0} //animate it into view

            $target.animate(endpoint, config.speed)

            config.$toc.removeClass('selected')

            $selectedlink.addClass('selected')

            config.$togglerdiv.attr('lastselected', selected+'pg')

        }

    },



    getremotecontent:function($, config){

        config.$glider.html(this.ajaxloadingmsg)

        $.ajax({

            url: config.remotecontent,

            error:function(ajaxrequest){

                config.$glider.html('Error fetching content.<br />Server Response: '+ajaxrequest.responseText)

            },

            success:function(content){

                config.$glider.html(content)

                featuredcontentglider.setuptoggler($, config)

            }

        })

    },



    aligncontents:function($, config){

        config.$contentdivs=$("#"+config.gliderid+" ."+config.contentclass)

        config.$contentdivs.css(config.leftortop, config.startpoint).css({height: config.$glider.height(), visibility: 'visible'}) //position content divs so they're out of view:

    },



    setuptoggler:function($, config){

        this.aligncontents($, config)

        config.$togglerdiv.hide()

        config.$toc.each(function(index){

                $(this).attr('pagenumber', index+'pg')

                if (index > (config.$contentdivs.length-1))

                    $(this).css({display: 'none'}) //hide redundant "toc" links

        })

        var $nextandprev=$("#"+config.togglerid+" .next, #"+config.togglerid+" .prev")

        $nextandprev.click(function(event){ //Assign click behavior to 'next' and 'prev' links

            featuredcontentglider.glide(config, this.getAttribute('loadpage'), this.getAttribute('buttontype'))

            event.preventDefault() //cancel default link action

        })

        config.$toc.click(function(event){ //Assign click behavior to 'toc' links

            featuredcontentglider.glide(config, this.getAttribute('pagenumber'))

            event.preventDefault()

        })

        config.$togglerdiv.fadeIn(1000, function(){

            featuredcontentglider.glide(config, config.selected)

            if (config.autorotate==true){ //auto rotate contents?

                config.stepcount=0 //set steps taken

                config.totalsteps=config.$contentdivs.length*config.autorotateconfig[1] //Total steps limit: num of contents x num of user specified cycles)

                featuredcontentglider.autorotate(config)

            }

        })

        config.$togglerdiv.click(function(){

            featuredcontentglider.cancelautorotate(config.togglerid)

        })

        if (this.leftrightkeys.length==2){

            $(document).bind('keydown', function(e){

                featuredcontentglider.keyboardnav(config, e.keyCode)

            })

        }

    },



    autorotate:function(config){

        var rotatespeed=config.speed+config.autorotateconfig[0]

        window[config.togglerid+"timer"]=setInterval(function(){

            if (config.totalsteps>0 && config.stepcount>=config.totalsteps){

                clearInterval(window[config.togglerid+"timer"])

            }

            else{

                featuredcontentglider.glide(config, config.nextslideindex, "ileri")

                config.stepcount++

            }

        }, rotatespeed)

    },



    cancelautorotate:function(togglerid){

        if (window[togglerid+"timer"])

            clearInterval(window[togglerid+"timer"])

    },



    keyboardnav:function(config, keycode){

        if (keycode==this.leftrightkeys[0])

            featuredcontentglider.glide(config, config.prevslideindex, "geri")

        else if (keycode==this.leftrightkeys[1])

            featuredcontentglider.glide(config, config.nextslideindex, "ileri")

        if (keycode==this.leftrightkeys[0] || keycode==this.leftrightkeys[1])

            featuredcontentglider.cancelautorotate(config.togglerid)

    },



    getCookie:function(Name){ 

        var re=new RegExp(Name+"=[^;]+", "i") //construct RE to search for target name/value pair

        if (document.cookie.match(re)) //if cookie found

            return document.cookie.match(re)[0].split("=")[1] //return its value

        return null

    },



    setCookie:function(name, value){

        document.cookie = name+"="+value

    },



    init:function(config){

        jQuery(document).ready(function($){

            config.$glider=$("#"+config.gliderid)

            config.$togglerdiv=$("#"+config.togglerid)

            config.$toc=config.$togglerdiv.find('.toc')

            config.$next=config.$togglerdiv.find('.next')

            config.$prev=config.$togglerdiv.find('.prev')

            config.$prev.attr('buttontype', 'geri')

            var selected=(config.persiststate)? featuredcontentglider.getCookie(config.gliderid) : config.selected

            config.selected=(isNaN(parseInt(selected))) ? config.selected : selected //test for cookie value containing null (1st page load) or "undefined" string  

            config.leftortop=(/up/i.test(config.direction))? "top" : "left" //set which CSS property to manipulate based on "direction"

            config.heightorwidth=(/up/i.test(config.direction))? config.$glider.height() : config.$glider.width() //Get glider height or width based on "direction"

            config.startpoint=(/^(left|up)/i.test(config.direction))? -config.heightorwidth : config.heightorwidth //set initial position of contents based on "direction"

            if (typeof config.remotecontent!="undefined" && config.remotecontent.length>0)

                featuredcontentglider.getremotecontent($, config)

            else

                featuredcontentglider.setuptoggler($, config)

            $(window).bind('unload', function(){ //clean up and persist

                config.$togglerdiv.unbind('click')

                config.$toc.unbind('click')

                config.$next.unbind('click')

                config.$prev.unbind('click')

                if (config.persiststate)

                    featuredcontentglider.setCookie(config.gliderid, config.$togglerdiv.attr('lastselected'))

                config=null

                

            })

        })

    }

}