/*
	jQuery Coda-Slider v2.0 - http://www.ndoherty.biz/coda-slider
	Copyright (c) 2009 Niall Doherty
	This plugin available for use in all personal or commercial projects under both MIT and GPL licenses.
*/

$(function(){
	// Remove the coda-slider-no-js class from the body
	$("body").removeClass("coda-slider-no-js");
	// Preloader
	$(".coda-slider").children('.panel').hide().end().prepend('<p class="loading">Loading...<br /><img src="images/ajax-loader.gif" alt="loading..." /></p>');
});

var sliderCount = 1;

$.fn.codaSlider = function(settings) {

	settings = $.extend({
		autoHeight: false,
		autoHeightEaseDuration: 1000,
		autoHeightEaseFunction: "easeInOutExpo",
		autoSlide: false,
		autoSlideInterval: 6000,
		autoSlideStopWhenClicked: true,
		crossLinking: true,
		dynamicArrows: true,
		dynamicArrowLeftText: "&#171; left",
		dynamicArrowRightText: "right &#187;",
		dynamicTabs: true,
		dynamicTabsAlign: "center",
		dynamicTabsPosition: "top",
		externalTriggerSelector: "a.xtrig",
		firstPanelToLoad: 1,
		panelTitleSelector: "h2.title",
		slideEaseDuration: 1000,
		slideEaseFunction: "easeInOutSine"
	}, settings);
	
	return this.each(function(){
		
		// Uncomment the line below to test your preloader
		// alert("Testing preloader");
		
		var slider = $(this);
		
		// If we need arrows
		if (settings.dynamicArrows) {
			slider.parent().addClass("arrows");
			slider.before('<div class="coda-nav-left" id="coda-nav-left-' + sliderCount + '"><a href="#">' + settings.dynamicArrowLeftText + '</a></div>');
			slider.after('<div class="coda-nav-right" id="coda-nav-right-' + sliderCount + '"><a href="#">' + settings.dynamicArrowRightText + '</a></div>');
		};
		
		var panelWidth = slider.find(".panel").width();
		var panelCount = slider.find(".panel").size();
		var panelContainerWidth = panelWidth*panelCount;
		var navClicks = 0; // Used if autoSlideStopWhenClicked = true
		
		// Surround the collection of panel divs with a container div (wide enough for all panels to be lined up end-to-end)
		$('.panel', slider).wrapAll('<div class="panel-container"></div>');
		// Specify the width of the container div (wide enough for all panels to be lined up end-to-end)
		$(".panel-container", slider).css({ width: panelContainerWidth });
		
		// Specify the current panel.
		// Current panel index
		var currentPanel = parseInt(location.hash.slice(1))-1;
		
		// Check to see if there is something with the ID of the hash in the slider, it conveniently already has the # on it
		var panel = $(location.hash+'-panel', slider);
		// If the loaded URL has a hash (cross-linking), we're going to use that hash to give the slider a specific starting position...
		if (settings.crossLinking && location.hash && (currentPanel < panelCount || panel.length == 1)) {
		   // Check if there was a numeric hash, or if it was named...
		   if (isNaN(currentPanel)) {
			  var currentPanel = $('.panel-container').find('.panel ').index(panel);
		   }
		   var offset = - (panelWidth*(currentPanel));
		   $('.panel-container', slider).css({ marginLeft: offset });
		} else if (settings.firstPanelToLoad != 1 && settings.firstPanelToLoad <= panelCount) { 
			var currentPanel = settings.firstPanelToLoad - 1;
			var offset = - (panelWidth*(currentPanel));
			$('.panel-container', slider).css({ marginLeft: offset });
		// Otherwise, we'll just set the current panel to 1...
		} else { 
			var currentPanel = 0;
		};
		// Left arrow click
		$("#coda-nav-left-" + sliderCount + " a").click(function(){										
			// hide project information
			if($('.project-image').css('display') == 'none') {
				$('.project-image').slideToggle('fast');
			}
		
			navClicks++;
			if (currentPanel <= 0) {
				offset = - (panelWidth*(panelCount - 1));
				alterPanelHeight(panelCount - 1);
				currentPanel = panelCount-1;
				$("#coda-nav-" + sliderCount).find('a.current').removeClass('current').parents('ul').find('li:last a').addClass('current');
			} else {
				currentPanel -= 1;
				alterPanelHeight(currentPanel - 1);
				offset = - (panelWidth*(currentPanel));
				$("#coda-nav-" + sliderCount).find('a.current').removeClass('current').parent().prev().find('a').addClass('current');
			};
			$('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
			if (settings.crossLinking) { 
				hashtag = $('.panel-container').find('.panel ').get(currentPanel).id;
				hashtag = hashtag.substring(0,hashtag.length-6);
				location.hash = hashtag
			}; // Change the URL hash (cross-linking)
		
			return false;
		});
			
		// Right arrow click
		$('#coda-nav-right-' + sliderCount + ' a').click(function(){
			// hide project information
			if($('.project-image').css('display') == 'none') {
				$('.project-image').slideToggle('fast');
			}												  
																  
			navClicks++;
			if (currentPanel == panelCount-1) {
				offset = 0;
				currentPanel = 0;
				alterPanelHeight(0);
				$("#coda-nav-" + sliderCount).find('a.current').removeClass('current').parents('ul').find('a:eq(0)').addClass('current');
			} else {
				currentPanel += 1;
				offset = - (panelWidth*currentPanel);
				alterPanelHeight(currentPanel);
				$("#coda-nav-" + sliderCount).find('a.current').removeClass('current').parent().next().find('a').addClass('current');
			};
			$('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
			if (settings.crossLinking) { 
				hashtag = $('.panel-container').find('.panel ').get(currentPanel).id;
				hashtag = hashtag.substring(0,hashtag.length-6);
				location.hash = hashtag
			}; // Change the URL hash (cross-linking)
			return false;
		});
		
		// If we need a dynamic menu
		if (settings.dynamicTabs) {
			var dynamicTabs = '<div class="coda-nav" id="coda-nav-' + sliderCount + '"><ul></ul></div>';
			switch (settings.dynamicTabsPosition) {
				case "bottom":
					slider.parent().append(dynamicTabs);
					break;
				default:
					slider.parent().prepend(dynamicTabs);
					break;
			};
			ul = $('#coda-nav-' + sliderCount + ' ul');
			// Create the nav items
			$('.panel', slider).each(function(n) {
				ul.append('<li class="tab' + (n+1) + '"><a href="#' + (n+1) + '">' + $(this).find(settings.panelTitleSelector).text() + '</a></li>');												
			});
			navContainerWidth = slider.width() + slider.siblings('.coda-nav-left').width() + slider.siblings('.coda-nav-right').width();
			ul.parent().css({ width: navContainerWidth });
			switch (settings.dynamicTabsAlign) {
				case "center":
					ul.css({ width: ($("li", ul).width() + 2) * panelCount });
					break;
				case "right":
					ul.css({ float: 'right' });
					break;
			};
		};
			
		// If we need a tabbed nav
		$('#coda-nav-' + sliderCount + ' a').each(function(z) {									   
														   
			// What happens when a nav link is clicked
			$(this).bind("click", function() {
				// hide project information
				if($('.project-image').css('display') == 'none') {
					$('.project-image').slideToggle('fast');
				}		
				
				navClicks++;
				$(this).addClass('current').parents('ul').find('a').not($(this)).removeClass('current');
				offset = - (panelWidth*z);
				alterPanelHeight(z);
				currentPanel = z ;
				$('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
				if (!settings.crossLinking) { return false }; // Don't change the URL hash unless cross-linking is specified
			});
		});
		
		// External triggers (anywhere on the page)
		$(settings.externalTriggerSelector).each(function() {
		   // Make sure this only affects the targeted slider
		   if (sliderCount == parseInt($(this).attr("rel").slice(12))) {
			  $(this).bind("click", function() {
				 navClicks++;
				 // Subtract 1 to make it zero based
				 targetPanel = parseInt($(this).attr("href").slice(1))-1;
				 
				 // If the hash isn't numeric, see if we can get an index from the ID
				 if (isNaN(targetPanel)) {
					var panel = $($(this).attr('href')+'-panel', slider);
					targetPanel = $('.panel-container').find('.panel ').index(panel);
				 }
				 
				 // Don't have to subtract 1 anymore, any where targetPanel is used
				 offset = - (panelWidth*(targetPanel));
				 alterPanelHeight(targetPanel);
				 currentPanel = targetPanel;
				 // Switch the current tab:
				 slider.siblings('.coda-nav').find('a').removeClass('current').parents('ul').find('li:eq(' + (targetPanel) + ') a').addClass('current');
				 // Slide
				 $('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
				 if (!settings.crossLinking) { return false }; // Don't change the URL hash unless cross-linking is specified
			  });
		   };
		});


		// Specify which tab is initially set to "current". Depends on if the loaded URL had a hash or not (cross-linking).
		 if (settings.crossLinking && location.hash && (parseInt(location.hash.slice(1)) <= panelCount || panel.length == 1)) {
		  // Check if there was a numeric hash, or if it was named...
		   if (isNaN(parseInt(location.hash.slice(1)))) {
			  currentPanel = $('.panel-container').find('.panel ').index(panel);
		   }
		   $("#coda-nav-" + sliderCount + " a:eq(" + (currentPanel) + ")").addClass("current");
		} else if (settings.firstPanelToLoad != 1 && settings.firstPanelToLoad <= panelCount) {
			$("#coda-nav-" + sliderCount + " a:eq(" + (settings.firstPanelToLoad - 1) + ")").addClass("current");
		// Otherwise we must be loading Panel 1, so make the first tab the current one.
		} else {
			$("#coda-nav-" + sliderCount + " a:eq(0)").addClass("current");
		};
		
		// Set the height of the first panel
		if (settings.autoHeight) {
			panelHeight = $('.panel:eq(' + (currentPanel - 1) + ')', slider).height();
			slider.css({ height: panelHeight });
		};
		
		// Trigger autoSlide
		if (settings.autoSlide) {
			slider.ready(function() {
				setTimeout(autoSlide,settings.autoSlideInterval);
			});
		};
		
		function alterPanelHeight(x) {
			if (settings.autoHeight) {
				panelHeight = $('.panel:eq(' + x + ')', slider).height()
				slider.animate({ height: panelHeight }, settings.autoHeightEaseDuration, settings.autoHeightEaseFunction);
			};
		};
		
		function autoSlide() {
			if (navClicks == 0 || !settings.autoSlideStopWhenClicked) {
				
				if (currentPanel == panelCount-1) {
					var offset = 0;
					currentPanel = 0;
					// Switch the current tab:
					$("#coda-nav-" + sliderCount).find('a.current').removeClass('current').parents('ul').find('a:eq(0)').addClass('current');
				} else {
					currentPanel += 1;
					offset = - (panelWidth*currentPanel);
					// Switch the current tab:
					$("#coda-nav-" + sliderCount).find('a.current').removeClass('current').parent().next().find('a').addClass('current');
				};
			
				// Slide:
				$('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
				setTimeout(autoSlide,settings.autoSlideInterval);
			};
		};
		
		// Kill the preloader
		$('.panel', slider).show().end().find("p.loading").remove();
		slider.removeClass("preload");
		
		//sliderCount++;
		
	});
};