+/**
+ * @author Jason Roy for CompareNetworks Inc.
+ * Thanks to mikejbond for suggested udaptes
+ *
+ * Version 1.1
+ * Copyright (c) 2009 CompareNetworks Inc.
+ *
+ * Licensed under the MIT license:
+ * http://www.opensource.org/licenses/mit-license.php
+ *
+ */
+(function($)
+{
+
+ // Private variables
+
+ var _options = {};
+ var _container = {};
+ var _breadCrumbElements = {};
+ var _autoIntervalArray = [];
+ var _easingEquation;
+
+ // Public functions
+
+ jQuery.fn.jBreadCrumb = function(options)
+ {
+ _options = $.extend({}, $.fn.jBreadCrumb.defaults, options);
+
+ return this.each(function()
+ {
+ _container = $(this);
+ setupBreadCrumb();
+ });
+
+ };
+
+ // Private functions
+
+ function setupBreadCrumb()
+ {
+ //Check if easing plugin exists. If it doesn't, use "swing"
+ if(typeof(jQuery.easing) == 'object')
+ {
+ _easingEquation = 'easeOutQuad'
+ }
+ else
+ {
+ _easingEquation = 'swing'
+ }
+
+ //The reference object containing all of the breadcrumb elements
+ _breadCrumbElements = jQuery(_container).find('li');
+
+ //Keep it from overflowing in ie6 & 7
+ jQuery(_container).find('ul').wrap('<div style="overflow:hidden; position:relative; width: ' + jQuery(_container).css("width") + ';"><div>');
+ //Set an arbitrary width width to avoid float drop on the animation
+ jQuery(_container).find('ul').width(5000);
+
+ //If the breadcrumb contains nothing, don't do anything
+ if (_breadCrumbElements.length > 0)
+ {
+ jQuery(_breadCrumbElements[_breadCrumbElements.length - 1]).addClass('last');
+ jQuery(_breadCrumbElements[0]).addClass('first');
+
+ //If the breadcrumb object length is long enough, compress.
+
+ if (_breadCrumbElements.length > _options.minimumCompressionElements)
+ {
+ compressBreadCrumb();
+ };
+ };
+ };
+
+ function compressBreadCrumb()
+ {
+
+ // Factor to determine if we should compress the element at all
+ var finalElement = jQuery(_breadCrumbElements[_breadCrumbElements.length - 1]);
+
+
+ // If the final element is really long, compress more elements
+ if (jQuery(finalElement).width() > _options.maxFinalElementLength)
+ {
+ if (_options.beginingElementsToLeaveOpen > 0)
+ {
+ _options.beginingElementsToLeaveOpen--;
+
+ }
+ if (_options.endElementsToLeaveOpen > 0)
+ {
+ _options.endElementsToLeaveOpen--;
+ }
+ }
+ // If the final element is within the short and long range, compress to the default end elements and 1 less beginning elements
+ if (jQuery(finalElement).width() < _options.maxFinalElementLength && jQuery(finalElement).width() > _options.minFinalElementLength)
+ {
+ if (_options.beginingElementsToLeaveOpen > 0)
+ {
+ _options.beginingElementsToLeaveOpen--;
+
+ }
+ }
+
+ var itemsToRemove = _breadCrumbElements.length - 1 - _options.endElementsToLeaveOpen;
+
+ // We compress only elements determined by the formula setting below
+
+ //TODO : Make this smarter, it's only checking the final elements length. It could also check the amount of elements.
+ jQuery(_breadCrumbElements[_breadCrumbElements.length - 1]).css(
+ {
+ background: 'none'
+ });
+
+ $(_breadCrumbElements).each(function(i, listElement)
+ {
+ if (i > _options.beginingElementsToLeaveOpen && i < itemsToRemove)
+ {
+
+ jQuery(listElement).find('a').wrap('<span></span>').width(jQuery(listElement).find('a').width() + 10);
+
+ // Add the overlay png.
+ jQuery(listElement).append(jQuery('<div class="' + _options.overlayClass + '"></div>').css(
+ {
+ display: 'block'
+ })).css(
+ {
+ background: 'none'
+ });
+ if (isIE6OrLess())
+ {
+ fixPNG(jQuery(listElement).find('.' + _options.overlayClass).css(
+ {
+ width: '20px',
+ right: "-1px"
+ }));
+ }
+ var options =
+ {
+ id: i,
+ width: jQuery(listElement).width(),
+ listElement: jQuery(listElement).find('span'),
+ isAnimating: false,
+ element: jQuery(listElement).find('span')
+
+ };
+ jQuery(listElement).bind('mouseover', options, expandBreadCrumb).bind('mouseout', options, shrinkBreadCrumb);
+ jQuery(listElement).find('a').unbind('mouseover', expandBreadCrumb).unbind('mouseout', shrinkBreadCrumb);
+ listElement.autoInterval = setInterval(function()
+ {
+ clearInterval(listElement.autoInterval);
+ jQuery(listElement).find('span').animate(
+ {
+ width: _options.previewWidth
+ }, _options.timeInitialCollapse, _options.easing);
+ }, (150 * (i - 2)));
+
+ }
+ });
+
+ };
+
+ function expandBreadCrumb(e)
+ {
+ var elementID = e.data.id;
+ var originalWidth = e.data.width;
+ jQuery(e.data.element).stop();
+ jQuery(e.data.element).animate(
+ {
+ width: originalWidth
+ },
+ {
+ duration: _options.timeExpansionAnimation,
+ easing: _options.easing,
+ queue: false
+ });
+ return false;
+
+ };
+
+ function shrinkBreadCrumb(e)
+ {
+ var elementID = e.data.id;
+ jQuery(e.data.element).stop();
+ jQuery(e.data.element).animate(
+ {
+ width: _options.previewWidth
+ },
+ {
+ duration: _options.timeCompressionAnimation,
+ easing: _options.easing,
+ queue: false
+ });
+ return false;
+ };
+
+ function isIE6OrLess()
+ {
+ var isIE6 = $.browser.msie && /MSIE\s(5\.5|6\.)/.test(navigator.userAgent);
+ return isIE6;
+ };
+ // Fix The Overlay for IE6
+ function fixPNG(element)
+ {
+ var image;
+ if (jQuery(element).is('img'))
+ {
+ image = jQuery(element).attr('src');
+ }
+ else
+ {
+ image = $(element).css('backgroundImage');
+ image.match(/^url\(["']?(.*\.png)["']?\)$/i);
+ image = RegExp.$1;
+ ;
+ }
+ $(element).css(
+ {
+ 'backgroundImage': 'none',
+ 'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale, src='" + image + "')"
+ });
+ };
+
+ // Public global variables
+
+ jQuery.fn.jBreadCrumb.defaults =
+ {
+ maxFinalElementLength: 400,
+ minFinalElementLength: 200,
+ minimumCompressionElements: 4,
+ endElementsToLeaveOpen: 1,
+ beginingElementsToLeaveOpen: 1,
+ timeExpansionAnimation: 800,
+ timeCompressionAnimation: 500,
+ timeInitialCollapse: 600,
+ easing: _easingEquation,
+ overlayClass: 'chevronOverlay',
+ previewWidth: 5
+ };
+
+})(jQuery);
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