// JavaScript Document
/*! Copyright (c) 2009 Brandon Aaron (http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 * Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
 * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
 *
 * Version: 3.0.2
 * 
 * Requires: 1.2.2+
 */

(function($) {

var types = ['DOMMouseScroll', 'mousewheel'];

$.event.special.mousewheel = {
    setup: function() {
        if ( this.addEventListener )
            for ( var i=types.length; i; )
                this.addEventListener( types[--i], handler, false );
        else
            this.onmousewheel = handler;
    },
    
    teardown: function() {
        if ( this.removeEventListener )
            for ( var i=types.length; i; )
                this.removeEventListener( types[--i], handler, false );
        else
            this.onmousewheel = null;
    }
};

$.fn.extend({
    mousewheel: function(fn) {
        return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
    },
    
    unmousewheel: function(fn) {
        return this.unbind("mousewheel", fn);
    }
});


function handler(event) {
    var args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true;
    
    event = $.event.fix(event || window.event);
    event.type = "mousewheel";
    
    if ( event.wheelDelta ) delta = event.wheelDelta/120;
    if ( event.detail     ) delta = -event.detail/3;
    
    // Add events and delta to the front of the arguments
    args.unshift(event, delta);

    return $.event.handle.apply(this, args);
}

})(jQuery);

/**
 * @version     $Id:  $Revision
 * @package     jquery
 * @subpackage  lofslidernews
 * @copyright   Copyright (C) JAN 2010 LandOfCoder.com <@emai:landofcoder@gmail.com>. All rights reserved.
 * @website     http://landofcoder.com
 * @license     This plugin is dual-licensed under the GNU General Public License and the MIT License 
 */
// JavaScript Document
(function($) {
     $.fn.lofJSidernews = function( settings ) {
        return this.each(function() {
            // get instance of the lofSiderNew.
            new  $.lofSidernews( this, settings ); 
        });
     }
     $.lofSidernews = function( obj, settings ){
        this.settings = {
            direction           : '',
            mainItemSelector    : 'li',
            navInnerSelector    : 'ul',
            navSelector         : 'li' ,
            navigatorEvent      : 'click',
            wapperSelector:     '.lof-main-wapper',
            interval            : 4000,
            auto                : true, // whether to automatic play the slideshow
            maxItemDisplay      : 3,
            startItem           : 0,
            navPosition         : 'vertical', 
            navigatorHeight     : 100,
            navigatorWidth      : 310,
            duration            : 600,
            navItemsSelector    : '.lof-navigator li',
            navOuterSelector    : '.lof-navigator-outer' ,
            isPreloaded         : true,
            easing              : 'easeInOutQuad'
        }   
        $.extend( this.settings, settings ||{} );   
        this.nextNo         = null;
        this.previousNo     = null;
        this.maxWidth  = this.settings.mainWidth || 600;
        this.wrapper = $( obj ).find( this.settings.wapperSelector );   
        this.slides = this.wrapper.find( this.settings.mainItemSelector );
        if( !this.wrapper.length || !this.slides.length ) return ;
        // set width of wapper
        if( this.settings.maxItemDisplay > this.slides.length ){
            this.settings.maxItemDisplay = this.slides.length;  
        }
        this.currentNo      = isNaN(this.settings.startItem)||this.settings.startItem > this.slides.length?0:this.settings.startItem;
        this.navigatorOuter = $( obj ).find( this.settings.navOuterSelector );  
        this.navigatorItems = $( obj ).find( this.settings.navItemsSelector ) ;
        this.navigatorInner = this.navigatorOuter.find( this.settings.navInnerSelector );
        
        if( this.settings.navPosition == 'horizontal' ){ 
            this.navigatorInner.width( this.slides.length * this.settings.navigatorWidth );
            this.navigatorOuter.width( this.settings.maxItemDisplay * this.settings.navigatorWidth );
            this.navigatorOuter.height( this.settings.navigatorHeight );
            
        } else {
            this.navigatorInner.height( this.slides.length * this.settings.navigatorHeight );   
            
            this.navigatorOuter.height( this.settings.maxItemDisplay * this.settings.navigatorHeight );
            this.navigatorOuter.width(  this.settings.navigatorWidth );
        }       
        this.navigratorStep = this.__getPositionMode( this.settings.navPosition );      
        this.directionMode = this.__getDirectionMode();  
        
        
        if( this.settings.direction == 'opacity') {
            this.wrapper.addClass( 'lof-opacity' );
            $(this.slides).css('opacity',0).eq(this.currentNo).css('opacity',1);
            this.caption = $( obj ).find( '.lof-main-item-desc' );
            $( obj ).find( '.lof-main-item-desc' ).hide().eq(0).show();
        } else { 
            this.wrapper.css({'left':'-'+this.currentNo*this.maxSize+'px', 'width':( this.maxWidth ) * this.slides.length } );
        }

        
        if( this.settings.isPreloaded ) {
            this.preLoadImage( this.onComplete );
        } else {
            this.onComplete();
        }
        
     }
     $.lofSidernews.fn =  $.lofSidernews.prototype;
     $.lofSidernews.fn.extend =  $.lofSidernews.extend = $.extend;
     
     $.lofSidernews.fn.extend({
                              
        startUp:function( obj, wrapper ) {
            seft = this;

            this.navigatorItems.each( function(index, item ){
                $(item).click( function(){
                    seft.jumping( index, true );
                    seft.setNavActive( index, item );                   
                } );
                $(item).css( {'height': seft.settings.navigatorHeight, 'width':  seft.settings.navigatorWidth} );
            })
            this.registerWheelHandler( this.navigatorOuter, this );
            this.setNavActive(this.currentNo );
            
            if( this.settings.buttons && typeof (this.settings.buttons) == "object" ){
                this.registerButtonsControl( 'click', this.settings.buttons, this );

            }
            if( this.settings.auto ) 
            this.play( this.settings.interval,'next', true );
            
            return this;
        },
        onComplete:function(){
            setTimeout( function(){ $('.preload').fadeOut( 900 ); }, 400 ); this.startUp( );
        },
        preLoadImage:function(  callback ){
            var self = this;
            var images = this.wrapper.find( 'img' );
    
            var count = 0;
            images.each( function(index,image){ 
                if( !image.complete ){                
                    image.onload =function(){
                        count++;
                        if( count >= images.length ){
                            self.onComplete();
                        }
                    }
                    image.onerror =function(){ 
                        count++;
                        if( count >= images.length ){
                            self.onComplete();
                        }   
                    }
                }else {
                    count++;
                    if( count >= images.length ){
                        self.onComplete();
                    }   
                }
            } );
        },
        navivationAnimate:function( currentIndex ) { 
            if (currentIndex <= this.settings.startItem 
                || currentIndex - this.settings.startItem >= this.settings.maxItemDisplay-1) {
                    this.settings.startItem = currentIndex - this.settings.maxItemDisplay+2;
                    if (this.settings.startItem < 0) this.settings.startItem = 0;
                    if (this.settings.startItem >this.slides.length-this.settings.maxItemDisplay) {
                        this.settings.startItem = this.slides.length-this.settings.maxItemDisplay;
                    }
            }       
            this.navigatorInner.stop().animate( eval('({'+this.navigratorStep[0]+':-'+this.settings.startItem*this.navigratorStep[1]+'})'), 
                                                {duration:500, easing:'easeInOutQuad'} );   
        },
        setNavActive:function( index, item ){
            if( (this.navigatorItems) ){ 
                this.navigatorItems.removeClass( 'active' );
                $(this.navigatorItems.get(index)).addClass( 'active' ); 
                this.navivationAnimate( this.currentNo );   
            }
        },
        __getPositionMode:function( position ){
            if( position  == 'horizontal' ){
                return ['left', this.settings.navigatorWidth];
            }
            return ['top', this.settings.navigatorHeight];
        },
        __getDirectionMode:function(){
            switch( this.settings.direction ){
                case 'opacity': this.maxSize=0; return ['opacity','opacity'];
                default: this.maxSize=this.maxWidth; return ['left','width'];
            }
        },
        registerWheelHandler:function( element, obj ){ 
             element.bind('mousewheel', function(event, delta ) {
                var dir = delta > 0 ? 'Up' : 'Down',
                    vel = Math.abs(delta);
                if( delta > 0 ){
                    obj.previous( true );
                } else {
                    obj.next( true );
                }
                return false;
            });
        },
        registerButtonsControl:function( eventHandler, objects, self ){ 
            for( var action in objects ){ 
                switch (action.toString() ){
                    case 'next':
                        objects[action].click( function() { self.next( true) } );
                        break;
                    case 'previous':
                        objects[action].click( function() { self.previous( true) } );
                        break;
                }
            }
            return this;    
        },
        onProcessing:function( manual, start, end ){            
            this.previousNo = this.currentNo + (this.currentNo>0 ? -1 : this.slides.length-1);
            this.nextNo     = this.currentNo + (this.currentNo < this.slides.length-1 ? 1 : 1- this.slides.length);             
            return this;
        },
        finishFx:function( manual ){
            if( manual ) this.stop();
            if( manual && this.settings.auto ){ 
                this.play( this.settings.interval,'next', true );
            }       
            this.setNavActive( this.currentNo );    
        },
        getObjectDirection:function( start, end ){
            return eval("({'"+this.directionMode[0]+"':-"+(this.currentNo*start)+"})"); 
        },
        fxStart:function( index, obj, currentObj ){
                if( this.settings.direction == 'opacity' ) { 
                    $(this.slides).stop().animate({opacity:0}, {duration: this.settings.duration, easing:this.settings.easing} );
                    $(this.slides).eq(index).stop().animate( {opacity:1},this.settings.duration, this.settings.easing, function(){
                                                                            $(currentObj.caption.slideUp().eq(index)).slideDown();                                                              
                                                                    } );
                    
                }else {
                    this.wrapper.stop().animate( obj, {duration: this.settings.duration, easing:this.settings.easing} );
                }
            return this;
        },
        jumping:function( no, manual ){
            this.stop(); 
            if( this.currentNo == no ) return;      
             var obj = eval("({'"+this.directionMode[0]+"':-"+(this.maxSize*no)+"})");
            this.onProcessing( null, manual, 0, this.maxSize )
                .fxStart( no, obj, this )
                .finishFx( manual );    
                this.currentNo  = no;
        },
        next:function( manual , item){

            this.currentNo += (this.currentNo < this.slides.length-1) ? 1 : (1 - this.slides.length);   
            this.onProcessing( item, manual, 0, this.maxSize )
                .fxStart( this.currentNo, this.getObjectDirection(this.maxSize ), this )
                .finishFx( manual );
        },
        previous:function( manual, item ){
            this.currentNo += this.currentNo > 0 ? -1 : this.slides.length - 1;
            this.onProcessing( item, manual )
                .fxStart( this.currentNo, this.getObjectDirection(this.maxSize ), this )
                .finishFx( manual   );          
        },
        play:function( delay, direction, wait ){    
            this.stop(); 
            if(!wait){ this[direction](false); }
            var self  = this;
            this.isRun = setTimeout(function() { self[direction](true); }, delay);
        },
        stop:function(){ 
            if (this.isRun == null) return;
            clearTimeout(this.isRun);
            this.isRun = null; 
        }
    })
})(jQuery)