/*
	jQuery Adjustable Height Tabs
	Based off of jQuery Coda-Slider v1.1 - http://www.ndoherty.com/coda-slider
	and slideViewer - http://www.gcmingati.net/wordpress/wp-content/lab/jquery/imagestrip/imageslide-plugin.html

	Requirements:
	-  jQuery 1.3.2 - http://docs.jquery.com/Downloading_jQuery
	-  jQuery easing 1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
	- CSS included in index.html
*/

var j = 0;

jQuery.fn.codaSlider = function(settings) {
	settings = jQuery.extend({
		easeFunc	: "easeInOutExpo",
		easeTime	: 750,
		toolTip		: false
	}, settings);

	return this.each(function() {
		var container = $(this);
		// Remove the preloader gif...
		container.find(".loading").remove();
		// Switch classes of panel container (allows javascript to degradable gracefully)
		container.removeClass("csw").addClass("stripViewer");
		// Get the width of a panel, set from CSS...
		var panelWidth = container.find("div.panel").width();
		// Create array of panel heights, set from CSS...
		var panelHeights = [];
		container.find("div.panel").each(function() {panelHeights.push($(this).height())});

		// panelCount gives us a count of the panels in the container...
		var panelCount = container.find("div.panel").size();
		// Calculate the width of all the panels when lined up end-to-end...
		var stripViewerWidth = panelWidth*panelCount;
		// Use the above width to specify the CSS width for the panelContainer element...
		container.find("div.panelContainer").css("width" , stripViewerWidth);

		// Set the navWidth as a multiple of panelCount to account for margin-right on each li
		var navWidth = panelCount*2;

		// Specify the current panel.
		// 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 (location.hash && parseInt(location.hash.slice(1)) <= panelCount) {
			var cPanel = parseInt(location.hash.slice(1));
			var cnt = - (panelWidth*(cPanel - 1));
			jQuery(this).find("div.panelContainer").css({left: cnt});
			// Otherwise, we'll just set the current panel to 1...
		} else {
			var cPanel = 1;
		}

		// Set initial height
		container.css("height" , panelHeights[cPanel - 1]);

		// Create appropriate nav
		container.each(function(i) {
			// Create the Left and Right arrows
			// jQuery(this).before("<div style='display: none' class='stripNavL' id='stripNavL" + j + "'><a id='navLeft' href='#'>Left</a><\/div>");
			// jQuery(this).after("<div style='display: none' class='stripNavR' id='stripNavR" + j + "'><a id='navRight' href='#'>Right</a><\/div>");
			jQuery(".panelContainer").before("<div style='display: none' class='stripNavL' id='stripNavL" + j + "'><a id='navLeft' href='#'>Left</a><\/div>");
			jQuery(".panelContainer").after("<div style='display: none' class='stripNavR' id='stripNavR" + j + "'><a id='navRight' href='#'>Right</a><\/div>");

			// Tab nav
			jQuery("div#stripNav" + j + " a").each(function(z) {
				// Figure out the navWidth by adding up the width of each li
				navWidth += jQuery(this).parent().width();
				// What happens when a nav link is clicked
				jQuery(this).bind("click", function() {
					jQuery(this).addClass("current").parent().parent().find("a").not(jQuery(this)).removeClass("current"); // wow!
					var cnt = - (panelWidth*z);

					cPanel = z + 1;
					curHeight = panelHeights[cPanel-1];
					jQuery(this).parent().parent().parent().next().find("div.panelContainer").animate({left: cnt}, settings.easeTime, settings.easeFunc);
					jQuery(this).parent().parent().parent().parent().find("div.stripViewer").animate({height: curHeight}, settings.easeTime, settings.easeFunc);
				});
			});
			
			// Left nav
			jQuery("div#stripNavL" + j + " a").click(function(){
				if (cPanel == 1) {
					var cnt = - (panelWidth*(panelCount - 1));
					cPanel = panelCount;
					jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().parent().find("li:last a").addClass("current");
				} else {
					cPanel -= 1;
					var cnt = - (panelWidth*(cPanel - 1));
					jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().prev().find("a").addClass("current");
				};
				curHeight = panelHeights[cPanel-1];
				jQuery(this).parent().parent().find("div.panelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc);
				jQuery(this).parent().parent().parent().parent().find("div.stripViewer").animate({ height: curHeight}, settings.easeTime, settings.easeFunc);
				// Change the URL hash (cross-linking)...
				location.hash = cPanel;
				return false;
			});
			
			// Right nav
			jQuery("div#stripNavR" + j + " a").click(function(){
				if (cPanel == panelCount) {
					var cnt = 0;
					cPanel = 1;
					jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().parent().find("a:eq(0)").addClass("current");
				} else {
					var cnt = - (panelWidth*cPanel);
					cPanel += 1;
					jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().next().find("a").addClass("current");
				};
				curHeight = panelHeights[cPanel-1];
				jQuery(this).parent().parent().find("div.panelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc);
				jQuery(this).parent().parent().parent().parent().find("div.stripViewer").animate({ height: curHeight}, settings.easeTime, settings.easeFunc);
				// Change the URL hash (cross-linking)...
				location.hash = cPanel;
				return false;
			});

			// Same-page cross-linking
			jQuery("a.cross-link").click(function() {
				jQuery(this).parents().find(".stripNav ul li a:eq(" + (parseInt(jQuery(this).attr("href").slice(1)) - 1) + ")").trigger('click');
			});

			// Set the width of the nav using the navWidth figure we calculated earlier. This is so the nav can be centred above the slider
			jQuery("div#stripNav" + j).css("width" , navWidth);

			// Specify which tab is initially set to "current". Depends on if the loaded URL had a hash or not (cross-linking).
			if (location.hash && parseInt(location.hash.slice(1)) <= panelCount) {
				jQuery("div#stripNav" + j + " a:eq(" + (location.hash.slice(1) - 1) + ")").addClass("current");
			} else {
				jQuery("div#stripNav" + j + " a:eq(0)").addClass("current");
			}

		});
		j++;

	});
};