/*
anythingSlider v1.2

By Chris Coyier: http://css-tricks.com
with major improvements by Doug Neiner: http://pixelgraphics.us/
based on work by Remy Sharp: http://jqueryfordesigners.com/


To use the navigationFormatter function, you must have a function that
accepts two paramaters, and returns a string of HTML text.

index = integer index (1 based);
panel = jQuery wrapped LI item this tab references
@return = Must return a string of HTML/Text

navigationFormatter: function(index, panel){
	return index + " Panel"; // This would have each tab with the text 'X Panel' where X = index
}
*/




(function($){

$.anythingSlider = function(el, options){
    
	
	
	
	// To avoid scope issues, use 'base' instead of 'this'
    // to reference this class from internal events and functions.
    var base = this;
	
	
    
    // Access to jQuery and DOM versions of element
    base.$el = $(el);
    base.el = el; 

	// Set up a few defaults
    base.currentPage = 1;
	base.timer = null;
	base.playing = false;

    // Add a reverse reference to the DOM object
    base.$el.data("AnythingSlider", base);
    

	
    base.init = function(){
        base.options = $.extend({},$.anythingSlider.defaults, options);
		
		// Cache existing DOM elements for later 
		base.$wrapper = base.$el.find('> div').css('overflow', 'hidden');
        base.$slider  = base.$wrapper.find('> ul');
        base.$items   = base.$slider.find('> .noFlash');
        base.$single  = base.$items.filter(':first');
		
		base.$allSlider = $('.bhsSlider');
		
		//base.$wrapper = $('.bhsSlider');
		//$('.bhsSlider').css('backgroundColor','#000');
		
		if(base.$items.length < base.options.elementsForSliding){
		
			base.options.buildNavigation = false;
			base.options.autoPlay = false; 
			base.options.backButtons = false;
			return;
		}
		
		// Build the navigation if needed
		if(base.options.buildNavigation) base.buildNavigation();
    
    	// Get the details
        base.singleWidth = base.$single.outerWidth();
        base.singleHight  = base.$single.outerHeight();
       
        base.pages = base.$items.length;
		

        // Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
		// This supports the "infinite" scrolling
		base.$items.filter(':first').before(base.$items.filter(':last').clone().addClass('cloned'));
       base.$items.filter(':last' ).after(base.$items.filter(':first').clone().addClass('cloned'));

		// We just added two items, time to re-cache the list
        base.$items = base.$slider.find('> li'); // reselect
        
		// Setup our forward/backward navigation
        if(base.options.backButtons){
        	
        	base.buildNextBackButtons();
        }
	
		// If autoPlay functionality is included, then initialize the settings
		if(base.options.autoPlay) {
			base.playing = !base.options.startStopped; // Sets the playing variable to false if startStopped is true
			base.buildAutoPlay();
		};
		
		// If pauseOnHover then add hover effects
		if(base.options.pauseOnHover) {
			base.$el.hover(function(){
				base.clearTimer();
			}, function(){
				base.startStop(base.playing);
			});
		}
		
		// If a hash can not be used to trigger the plugin, then go to page 1
		if((base.options.hashTags == true && !base.gotoHash()) || base.options.hashTags == false){
			base.setCurrentPage(1);
		};
    };

	base.gotoPage = function(page, autoplay){
		// When autoplay isn't passed, we stop the timer
		if(autoplay !== true) autoplay = false; // shug => false to true
		if(!autoplay) base.startStop(false);
		
		if(typeof(page) == "undefined" || page == null) {
			page = 1;
			base.setCurrentPage(1);
		};
		
		// Just check for bounds
		if(page > base.pages + 1) page = base.pages;
		if(page < 0 ) page = 1;

	
		
		
		if(base.options.vertical == true){
			var dir = page < base.currentPage ? -1 : 1,
	                n = Math.abs(base.currentPage - page),
	                top = base.singleHight * dir * n;
			
			base.$wrapper.filter(':not(:animated)').animate({
					scrollTop: '+=' + top
				}, base.options.animationTime, base.options.easing, function() {
		    // $(this).css('top','80px');
		     
		     if (page == 0) {
                    base.$wrapper.scrollTop(base.singleHight * base.pages);
					page = base.pages;
                } else if (page > base.pages) {
                    base.$wrapper.scrollTop(base.singleHight);
                    // reset back to start position
                    page = 1;
                };
				base.setCurrentPage(page);
		     
		     
		   });

		} else {
			var dir = page < base.currentPage ? -1 : 1,
	                n = Math.abs(base.currentPage - page),
	                left = base.singleWidth * dir * n;
			
			
		base.$wrapper.filter(':not(:animated)').animate({
            scrollLeft : '+=' + left
        }, base.options.animationTime, base.options.easing, function () {
            if (page == 0) {
                base.$wrapper.scrollLeft(base.singleWidth * base.pages);
				page = base.pages;
            } else if (page > base.pages) {
                base.$wrapper.scrollLeft(base.singleWidth);
                // reset back to start position
                page = 1;
            };
			base.setCurrentPage(page);
			
        });
		}
       
	};
	
	base.setCurrentPage = function(page, move){
		// Set visual
		if(base.options.buildNavigation){
			base.$nav.find('.cur').removeClass('cur');
			$(base.$navLinks[page - 1]).addClass('cur');	
		};
		
		// Only change left if move does not equal false
		
		if(move !== false && base.options.vertical == false){ 
			base.$wrapper.scrollLeft(base.singleWidth * page);
		}
		else if(move !== false){ 
			base.$wrapper.scrollTop(base.singleHight * page);
		}
		// Update local variable
		base.currentPage = page;
	};
	
	base.goForward = function(autoplay){
		if(autoplay !== true) autoplay = false;
		
		//base.$allSlider.gotoPage(base.currentPage + 1, autoplay);
		
		base.gotoPage(base.currentPage + 1, autoplay);
	};
	
	base.goBack = function(){
		base.gotoPage(base.currentPage - 1);
	};
	
	// This method tries to find a hash that matches panel-X
	// If found, it tries to find a matching item
	// If that is found as well, then that item starts visible
	base.gotoHash = function(){
		if(/^#?panel-\d+$/.test(window.location.hash)){
			var index = parseInt(window.location.hash.substr(7));
			var $item = base.$items.filter(':eq(' + index + ')');
			if($item.length != 0){
				base.setCurrentPage(index);
				return true;
			};
		};
		return false; // A item wasn't found;
	};
   
	// Creates the numbered navigation links
	base.buildNavigation = function(){
		base.$nav = $("<div class='thumbNav'></div>").appendTo(base.$el);
		
		
		
		
		base.$items.each(function(i,el){
			var index = i + 1;
			var $a = $("<a href='#'></a>");
			
			// If a formatter function is present, use it
			if( typeof(base.options.navigationFormatter) == "function"){
				$a.html(base.options.navigationFormatter(index, $(this)));
			} else {
				$a.text(index);
			}
			$a.click(function(e){
                base.gotoPage(index);
                
                if (base.options.hashTags)
					base.setHash('panel-' + index);
					
                e.preventDefault();
			});
			base.$nav.append($a);
		});
		base.$navLinks = base.$nav.find('> a');
		
		
	};
	
	
	// Creates the Forward/Backward buttons
	base.buildNextBackButtons = function(){
		var $forward = $('<a class="arrow forward"></a>'),
			$back    = $('<a class="arrow back"></a>');
			
        // Bind to the forward and back buttons
        $back.click(function(e){
            base.goBack();
			e.preventDefault();
        });

        $forward.click(function(e){
            base.goForward();
			e.preventDefault();
        });

		// Append elements to page
		base.$wrapper.after($back).after($forward);
	};
	
	// Creates the Start/Stop button
	base.buildAutoPlay = function(){

		base.$startStop = $("<a href='#' clase='start-stop'></a>").html(base.playing ? base.options.stopText :  base.options.startText);
		base.$el.append(base.$startStop);            
        base.$startStop.click(function(e){
			base.startStop(!base.playing);
			e.preventDefault();
        });

		// Use the same setting, but trigger the start;
		base.startStop(base.playing);
	};
	
	// Handles stopping and playing the slideshow
	// Pass startStop(false) to stop and startStop(true) to play
	base.startStop = function(playing){
		if(playing !== true) playing = false; // Default if not supplied is false
		
		// Update variable
		base.playing = playing;
		
		// Toggle playing and text
		if(base.options.autoPlay) base.$startStop.toggleClass("playing", playing).html( playing ? base.options.stopText : base.options.startText );
		
		if(playing){
			base.clearTimer(); // Just in case this was triggered twice in a row
			base.timer = window.setInterval(function(){
				base.goForward(true);
			}, base.options.delay);
		} else {
			base.clearTimer();
		};
	};
	
	base.clearTimer = function(){
		// Clear the timer only if it is set
		if(base.timer) window.clearInterval(base.timer);
	};
	
	// Taken from AJAXY jquery.history Plugin
	base.setHash = function ( hash ) {
		// Write hash
		if ( typeof window.location.hash !== 'undefined' ) {
			if ( window.location.hash !== hash ) {
				window.location.hash = hash;
			};
		} else if ( location.hash !== hash ) {
			location.hash = hash;
		};
		
		// Done
		return hash;
	};
	// <-- End AJAXY code


	// Trigger the initialization
    base.init();
};


$.anythingSlider.defaults = {
    easing: "swing",                // Anything other than "linear" or "swing" requires the easing plugin
    autoPlay: true,                 // This turns off the entire FUNCTIONALY, not just if it starts running or not
    startStopped: false,            // If autoPlay is on, this can force it to start stopped
    delay: 3000,                    // How long between slide transitions in AutoPlay mode
    animationTime: 600,             // How long the slide transition takes
    hashTags: true,                 // Should links change the hashtag in the URL?
    buildNavigation: true,          // If true, builds and list of anchor links to link to each slide
    pauseOnHover: true,             // If true, and autoPlay is enabled, the show will pause on hover
	startText: "Start",             // Start text
	stopText: "Stop",               // Stop text
	navigationFormatter: null,      // Details at the top of the file on this use (advanced use)
	elementsForSliding: 2,			// Elements are needed for sliding
	backButtons: true,				// Are enough elements, show backbuttons
	vertical: false
};


$.fn.anythingSlider = function(options){
	if(typeof(options) == "object"){
	    return this.each(function(i){			
			(new $.anythingSlider(this, options));

            // This plugin supports multiple instances, but only one can support hash-tag support
			// This disables hash-tags on all items but the first one
			options.hashTags = false;
        });	
	} else if (typeof(options) == "number") {

		return this.each(function(i){
			var anySlide = $(this).data('AnythingSlider');
			if(anySlide){
				anySlide.gotoPage(options);
			}
		});
	}
};


})(jQuery);