/*
	jQuery Coda-Slider v1.1 - 
	
	Copyright (c) 2007 Niall Doherty
	
	Inspired by the clever folks at http://www.panic.com/coda
	Many thanks to Gian Carlo Mingati. Coda-Slider is a heavily modified version of his slideViewer, which can be found at  http://www.gcmingati.net/wordpress/wp-content/lab/jquery/imagestrip/imageslide-plugin.html
	
	2007.12.14
	This javascript was heavily modified by Ryan Ragle with auto size tabs that work independantly of font size set.
	
*/

jQuery(function(){
	jQuery("div.csw").prepend("<p class='loading'>Loading...<br /><img src='images/ajax-loader.gif' alt='loading...'/ ></p>");
});

function calcTabStyle(myPanelCount, panelNumber, perceivedSize)
{	
	var myAverageTab = Math.round((perceivedSize - ((myPanelCount * 3) - 1))/ myPanelCount)
	
	if (myPanelCount == 1) {	
		return "style='width:51em;margin-left:0px;margin-right:0px;'";
		}
	if ((myPanelCount - 1) == panelNumber) { //this one needs to make up for lost space over time
		//find missing pixels
		myAverageTab = myAverageTab + 3 //adding 3 pixels to final last tab calc because to 2padding + 1margin
		var myUsedSpace = myAverageTab * (myPanelCount - 1);	
		var myLastTab = perceivedSize - myUsedSpace - 2; //only 2 different because no margin px
		return "style='width:" + myLastTab + "px;padding-right:2px; margin-left:0px;float:left;'";
	} else { 
		return "style='width:" + myAverageTab + "px;padding-right:2px; padding-left:0px; margin-right:1px; margin-left:0px;float:left'";
	}
}

var j = 0;
var emFont = .07501;
var emConv = 12;
jQuery.fn.codaSlider = function(settings) {
	 settings = jQuery.extend({
     easeFunc: "expoinout",
     easeTime: 750,
     toolTip: false
  }, settings);
	return this.each(function(){
		var container = jQuery(this);
		// Remove the preloader gif...
		container.find("p.loading").remove();
		// Self-explanatory...
		container.removeClass("csw").addClass("stripViewer");
		// Get the width of a panel, set from CSS...
		var panelWidth = container.find("div.panel").width();
		
	
		// 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 + 30;
		var stripViewerWidthEM = (stripViewerWidth * emFont) / emConv;
		
		
		// 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*1;
		
		// 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;
		};
		
		// Create appropriate nav
		container.each(function(i) {
		
			// Create the Tabs
			jQuery(this).before("<div class='stripNav' id='stripNav" + j + "'><ul><\/ul><\/div>");
			jQuery(this).find("div.panel").each(function(n) {
						jQuery("div#stripNav" + j + " ul").append("<li class='tab" + (n+1) + "'" + calcTabStyle(panelCount, n, panelWidth) + "><a href='#" + (n+1) + "'>" + jQuery(this).attr("title") + "<\/a><\/li>");												
			});
			
			// 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;
					jQuery(this).parent().parent().parent().next().find("div.panelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc);
				});
			});
		
			// 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');
			});	
			
			// 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++;
  });

};