/*
anythingSlider v1.1
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('> li');
base.$single=base.$items.filter(':first');
	// Build the navigation if needed
	if(base.options.buildNavigation)base.buildNavigation();
	// Get the details
base.singleWidth=base.$single.outerWidth();
base.pages=base.$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
	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;
	
	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;
	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.$wrapper.scrollLeft(base.singleWidth * page);
	// Update local variable
	base.currentPage=page;
	};
	
	base.goForward=function(autoplay){
	if(autoplay !==true)autoplay=false;
	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=$("<div id='thumbNav'></div>").appendTo(base.$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 $forward=$('<div id="arrow_right"><a class="arrow back">Proximo</a></div>'),
	$back=$('<div id="arrow_left"><a class="arrow forward">Anterior</a></div>');
	
// 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='#' id='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
	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)
};
	
$.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);