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doc/template/resources/javascripts/jquery.collapse.js

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+/*!
+ * Collapse plugin for jQuery
+ * http://github.com/danielstocks/jQuery-Collapse/
+ *
+ * @author Daniel Stocks (http://webcloud.se)
+ * @version 0.9.1
+ * @updated 17-AUG-2010
+ * 
+ * Copyright 2010, Daniel Stocks
+ * Released under the MIT, BSD, and GPL Licenses.
+ */
+ 
+(function($) {
+    
+    // Use a cookie counter to allow multiple instances of the plugin
+    var cookieCounter = 0;
+    
+    $.fn.extend({
+        collapse: function(options) {
+            
+            var defaults = {
+                head : "h3",
+                group : "div, ul",
+                cookieName : "collapse",
+                // Default function for showing content
+                show: function() { 
+                    this.show();
+                },
+                // Default function for hiding content
+                hide: function() { 
+                    this.hide();
+                }
+            };
+            var op = $.extend(defaults, options);
+            
+            // Default CSS classes
+            var active = "active",
+                inactive = "inactive";
+            
+            return this.each(function() {
+                
+                // Increment coookie counter to ensure cookie name integrity
+                cookieCounter++;
+                var obj = $(this),
+                    // Find all headers and wrap them in <a> for accessibility.
+                    sections = obj.find(op.head).wrapInner('<a href="#"></a>'),
+                    l = sections.length,
+                    cookie = op.cookieName + "_" + cookieCounter;
+                    // Locate all panels directly following a header
+                    var panel = obj.find(op.head).map(function() {
+                        var head = $(this)
+                        if(!head.hasClass(active)) {
+                            return head.next(op.group).hide()[0];
+                        }
+                        return head.next(op.group)[0];
+                    });
+    
+                // Bind event for showing content
+                obj.bind("show", function(e, bypass) {
+                    var obj = $(e.target);
+                    // ARIA attribute
+                    obj.attr('aria-hidden', false)
+                        .prev()
+                        .removeClass(inactive)
+                        .addClass(active);
+                    // Bypass method for instant display
+                    if(bypass) {
+                        obj.show();
+                    } else {
+                        op.show.call(obj);
+                    }
+                });
+
+                // Bind event for hiding content
+                obj.bind("hide", function(e, bypass) {
+                    var obj = $(e.target);
+                    obj.attr('aria-hidden', true)
+                        .prev()
+                        .removeClass(active)
+                        .addClass(inactive);
+                    if(bypass) {
+                        obj.hide();
+                    } else {
+                        op.hide.call(obj);
+                    }
+                });
+                
+                // Look for existing cookies
+                if(cookieSupport) {
+                    for (var c=0;c<=l;c++) {
+                        var val = $.cookie(cookie + c);
+                        // Show content if associating cookie is found
+                        if ( val == c + "open" ) {
+                            panel.eq(c).trigger('show', [true]);
+                        // Hide content
+                        } else if ( val == c + "closed") {
+                            panel.eq(c).trigger('hide', [true]);
+                        }
+                    }
+                }
+                
+                // Delegate click event to show/hide content.
+                obj.bind("click", function(e) {
+                    var t = $(e.target);
+                    // Check if header was clicked
+                    if(!t.is(op.head)) {
+                        // What about link inside header.
+                        if ( t.parent().is(op.head) ) {
+                            t = t.parent();
+                        } else {
+                            return;
+                        }
+                        e.preventDefault();
+                    }
+                    // Figure out what position the clicked header has.
+                    var num = sections.index(t),
+                        cookieName = cookie + num,
+                        cookieVal = num,
+                        content = t.next(op.group);
+                    // If content is already active, hide it.
+                    if(t.hasClass(active)) {
+                        content.trigger('hide');
+                        cookieVal += 'closed';
+                        if(cookieSupport) {
+                            $.cookie(cookieName, cookieVal, { path: '/', expires: 10 });
+                        }
+                        return;
+                    }
+                    // Otherwise show it.
+                    content.trigger('show');
+                    cookieVal += 'open';
+                    if(cookieSupport) {
+                        $.cookie(cookieName, cookieVal, { path: '/', expires: 10 });
+                    }
+                });
+            });
+        }
+    });
+
+    // Make sure can we eat cookies without getting into trouble.
+    var cookieSupport = (function() {
+        try {
+            $.cookie('x', 'x', { path: '/', expires: 10 });
+            $.cookie('x', null);
+        }
+        catch(e) {
+            return false;
+        }
+        return true;
+    })();
+})(jQuery);