bug:2700 implementation of jBreadCrumb

comments appreciated on the bugtracker

git-svn-id: http://piwigo.org/svn/trunk@26971 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 206 insertions, 0 deletions

diff --git a/themes/elegant/js/jquery.jBreadCrumb.js b/themes/elegant/js/jquery.jBreadCrumb.js
new file mode 100644
index 000000000..bb722868e
--- /dev/null
+++ b/themes/elegant/js/jquery.jBreadCrumb.js
@@ -0,0 +1,206 @@
+/**
+ * @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'
+                // });
+
+                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;
+    };
+    
+    // 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: 40
+    };
+    
+})(jQuery);