/*
	jQuery Coda-Fader v2.0 - http://www.ndoherty.biz/coda-fader
	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-fader-no-js class from the body
	$("body").removeClass("coda-fader-no-js");
	// Preloader
	$(".coda-fader").children('.panel').hide().end().prepend('<p class="loading">Loading...<br /><img src="images/sitewide/ajax-loader.gif" alt="loading..." /></p>');
    $('.coda-fader .panel-content-wrapper').hide();
    
});

var faderCount = 1;
var fadePanel = null;

$.fn.codaFader = function(settings) {

	settings = $.extend({
		autoHeight: true,
		autoHeightEaseDuration: 1000,
		autoHeightEaseFunction: "easeInOutExpo",
		autoFade: false,
		autoFadeInterval: 7000,
        fadeEaseDuration: 500,
		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",
        codaNavSelector: ".coda-nav",
        withPanel: false
	}, settings);
	
	return this.each(function(){
		
		// Uncomment the line below to test your preloader
		// alert("Testing preloader");
		
		var fader = $(this);
        
        if(settings.withPanel) {
            fadePanel = setTimeout(function(){$('.panel-content-wrapper', fader).eq(0).slideDown(700);}, 3000);
        }
		
		// If we need arrows
		if (settings.dynamicArrows) {
			fader.parent().addClass("arrows");
			fader.before('<div class="coda-nav-left" id="coda-nav-left-' + faderCount + '"><a href="#">' + settings.dynamicArrowLeftText + '</a></div>');
			fader.after('<div class="coda-nav-right" id="coda-nav-right-' + faderCount + '"><a href="#">' + settings.dynamicArrowRightText + '</a></div>');
		};
		
		var panelWidth = fader.find(".panel").width();
        var panelHeight = fader.find(".panel").height();
		var panelCount = fader.find(".panel").size();
		var panelContainerWidth = panelWidth;
		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', fader).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", fader).css({ width: panelContainerWidth, height: panelHeight });
		
		// Specify the current panel.
		// If the loaded URL has a hash (cross-linking), we're going to use that hash to give the fader a specific starting position...
		if (settings.crossLinking && location.hash && parseInt(location.hash.slice(1)) <= panelCount) {
			var currentPanel = parseInt(location.hash.slice(1));
			var offset = - (panelWidth*(currentPanel - 1));
			// $('.panel-container', fader).css({ marginLeft: offset });
		// If that's not the case, check to see if we're supposed to load a panel other than Panel 1 initially...
		} else if (settings.firstPanelToLoad != 1 && settings.firstPanelToLoad <= panelCount) { 
			var currentPanel = settings.firstPanelToLoad;
			var offset = - (panelWidth*(currentPanel - 1));
			// $('.panel-container', fader).css({ marginLeft: offset });
		// Otherwise, we'll just set the current panel to 1...
		} else { 
			var currentPanel = 1;
		};
			
		// Left arrow click
		$("#coda-nav-left-" + faderCount + " a").click(function(){
			navClicks++;
			if (currentPanel == 1) {
				offset = - (panelWidth*(panelCount - 1));
				alterPanelHeight(panelCount - 1);
				currentPanel = panelCount;
				$(settings.codaNavSelector).find('a.current').removeClass('current').parents('ul').find('li:last a').addClass('current');
			} else {
				currentPanel -= 1;
				alterPanelHeight(currentPanel - 1);
				offset = - (panelWidth*(currentPanel - 1));
				$(settings.codaNavSelector).find('a.current').removeClass('current').parent().prev().find('a').addClass('current');
			};
            
            if(settings.withPanel) {
                $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration, function(){
                        $('.panel-content-wrapper', fader).hide();
                });
                $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration, function(){
                    clearTimeout(fadePanel);
                    fadePanel = setTimeout(function(){$('.panel-content-wrapper', fader).eq(currentPanel - 1).slideDown(700);}, 1500);
                });

            } else {
                $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration);
                $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration);
            }
            
			if (settings.crossLinking) { location.hash = currentPanel }; // Change the URL hash (cross-linking)
			return false;
		});
			
		// Right arrow click
		$('#coda-nav-right-' + faderCount + ' a').click(function(){
			navClicks++;
			if (currentPanel == panelCount) {
				offset = 0;
				currentPanel = 1;
				alterPanelHeight(0);
				$(settings.codaNavSelector).find('a.current').removeClass('current').parents('ul').find('a:eq(0)').addClass('current');
			} else {
				offset = - (panelWidth*currentPanel);
				alterPanelHeight(currentPanel);
				currentPanel += 1;
				$(settings.codaNavSelector).find('a.current').removeClass('current').parent().next().find('a').addClass('current');
			};
            
            if(settings.withPanel) {
                $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration, function(){
                        $('.panel-content-wrapper', fader).hide();
                });
                $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration, function(){
                    clearTimeout(fadePanel);
                    fadePanel = setTimeout(function(){$('.panel-content-wrapper', fader).eq(currentPanel - 1).slideDown(700);}, 1500);
                });

            } else {
                $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration);
                $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration);
            }
            
			if (settings.crossLinking) { location.hash = currentPanel }; // 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-' + faderCount + '"><ul></ul></div>';
			switch (settings.dynamicTabsPosition) {
				case "bottom":
					fader.parent().append(dynamicTabs);
					break;
				default:
					fader.parent().prepend(dynamicTabs);
					break;
			};
			ul = $('#coda-nav-' + faderCount + ' ul');
			// Create the nav items
			$('.panel', fader).each(function(n) {
				ul.append('<li class="tab' + (n+1) + '"><a href="#' + (n+1) + '">' + $(this).find(settings.panelTitleSelector).text() + '</a></li>');												
			});
			navContainerWidth = fader.width() + fader.siblings('.coda-nav-left').width() + fader.siblings('.coda-nav-right').width();
			ul.parent().css({ width: navContainerWidth });
			switch (settings.dynamicTabsAlign) {
				case "center":
					ul.css({ width: ($("li", ul).width() + 2) * panelCount });
					break;
				case "right":
					ul.css({ float: 'right' });
					break;
			};
		};
			
		// If we need a tabbed nav
		$('#coda-nav-' + faderCount + ' a').each(function(z) {
			// What happens when a nav link is clicked
			$(this).bind("click", function() {
				navClicks++;
				$(this).addClass('current').parents('ul').find('a').not($(this)).removeClass('current');
				offset = - (panelWidth*z);
				alterPanelHeight(z);
				currentPanel = z + 1;
                
                if(settings.withPanel) {
                    $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration, function(){
                        $('.panel-content-wrapper', fader).hide();
                    });
                    $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration, function(){
                        clearTimeout(fadePanel);
                        fadePanel = setTimeout(function(){$('.panel-content-wrapper', fader).eq(currentPanel - 1).slideDown(700);}, 1500);
                    });

                } else {
                    $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration);
                    $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration);
                }
				
                if (!settings.crossLinking) { return false }; // Don't change the URL hash unless cross-linking is specified
			});
		});
		
		// External triggers (anywhere on the page)
		$(settings.externalTriggerSelector).each(function() {
			// Make sure this only affects the targeted fader
			if (faderCount == parseInt($(this).attr("rel").slice(12))) {
				$(this).bind("click", function() {
					navClicks++;
					targetPanel = parseInt($(this).attr("href").slice(1));
					offset = - (panelWidth*(targetPanel - 1));
					alterPanelHeight(targetPanel - 1);
					currentPanel = targetPanel;
					// Switch the current tab:
					$(settings.codaNavSelector).find('a').removeClass('current').parents('ul').find('li:eq(' + (targetPanel - 1) + ') a').addClass('current');
					// Slide
                    
                    if(settings.withPanel) {
                        $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration, function(){
                            $('.panel-content-wrapper', fader).hide();
                        });
                        $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration, function(){
                            clearTimeout(fadePanel);
                            fadePanel = setTimeout(function(){$('.panel-content-wrapper', fader).eq(currentPanel - 1).slideDown(700);}, 1500);
                        });

                    } else {
                        $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration);
                        $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration);
                    }
					
                    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) {
			$("#coda-nav-" + faderCount + " a:eq(" + (location.hash.slice(1) - 1) + ")").addClass("current");
		// If there's no cross-linking, check to see if we're supposed to load a panel other than Panel 1 initially...
		} else if (settings.firstPanelToLoad != 1 && settings.firstPanelToLoad <= panelCount) {
			$("#coda-nav-" + faderCount + " 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-" + faderCount + " a:eq(0)").addClass("current");
		};
		
		// Set the height of the first panel
		if (settings.autoHeight) {
			panelHeight = $('.panel:eq(' + (currentPanel - 1) + ')', fader).height();
			fader.css({ height: panelHeight });
		};
		
		// Trigger autoFade
		if (settings.autoFade) {
			fader.ready(function() {
                setTimeout(autoFade,settings.autoFadeInterval);
			});
		};
		
		function alterPanelHeight(x) {
			if (settings.autoHeight) {
				panelHeight = $('.panel:eq(' + x + ')', fader).height()
				fader.animate({ height: panelHeight }, settings.autoHeightEaseDuration, settings.autoHeightEaseFunction);
			};
		};
		
		function autoFade() {
			if (navClicks == 0 || !settings.autoSlideStopWhenClicked) {
				if (currentPanel == panelCount) {
					var offset = 0;
					currentPanel = 1;
				} else {
					var offset = - (panelWidth*currentPanel);
					currentPanel += 1;
				};
				alterPanelHeight(currentPanel - 1);
				// Switch the current tab:
				$(settings.codaNavSelector).find('a').removeClass('current').parents('ul').find('li:eq(' + (currentPanel - 1) + ') a').addClass('current');
				// Slide:
                
                if(settings.withPanel) {
                    $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration, function(){
                        $('.panel-content-wrapper', fader).hide();
                    });
                    $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration, function(){
                        clearTimeout(fadePanel);
                        fadePanel = setTimeout(function(){$('.panel-content-wrapper', fader).eq(currentPanel - 1).slideDown(700);}, 1500);
                    });

                } else {
                    $('.panel-container .panel', fader).fadeOut(settings.fadeEaseDuration);
                    $('.panel-container .panel', fader).eq(currentPanel - 1).fadeIn(settings.fadeEaseDuration);
                }
				
                setTimeout(autoFade,settings.autoFadeInterval);
			};
		};
		
		// Kill the preloader
		$('.panel', fader).hide().end().find("p.loading").remove();
        $('.panel', fader).eq(currentPanel - 1).show();
		fader.removeClass("preload");
		
		faderCount++;
		
	});
};