Y.mix(Y.DOM, {
+ /**
+ * Determines whether a DOM element has the given className.
+ * @method hasClass
+ * @param {HTMLElement} element The DOM element.
+ * @param {String} className the class name to search for
+ * @return {Boolean} Whether or not the element has the given class.
+ */
+ hasClass: function(node, className) {
+ var re = Y.DOM._getRegExp('(?:^|\\s+)' + className + '(?:\\s+|$)');
+ return re.test(node.className);
+ },
+
+ /**
+ * Adds a class name to a given DOM element.
+ * @method addClass
+ * @param {HTMLElement} element The DOM element.
+ * @param {String} className the class name to add to the class attribute
+ */
+ addClass: function(node, className) {
+ if (!Y.DOM.hasClass(node, className)) { // skip if already present
+ node.className = Y.Lang.trim([node.className, className].join(' '));
+ }
+ },
+
+ /**
+ * Removes a class name from a given element.
+ * @method removeClass
+ * @param {HTMLElement} element The DOM element.
+ * @param {String} className the class name to remove from the class attribute
+ */
+ removeClass: function(node, className) {
+ if (className && Y.DOM.hasClass(node, className)) {
+ node.className = Y.Lang.trim(node.className.replace(Y.DOM._getRegExp('(?:^|\\s+)' +
+ className + '(?:\\s+|$)'), ' '));
+
+ if ( Y.DOM.hasClass(node, className) ) { // in case of multiple adjacent
+ Y.DOM.removeClass(node, className);
+ }
+ }
+ },
+
+ /**
+ * Replace a class with another class for a given element.
+ * If no oldClassName is present, the newClassName is simply added.
+ * @method replaceClass
+ * @param {HTMLElement} element The DOM element.
+ * @param {String} oldClassName the class name to be replaced
+ * @param {String} newClassName the class name that will be replacing the old class name
+ */
+ replaceClass: function(node, oldC, newC) {
+ //Y.log('replaceClass replacing ' + oldC + ' with ' + newC, 'info', 'Node');
+ Y.DOM.addClass(node, newC);
+ Y.DOM.removeClass(node, oldC);
+ },
+
+ /**
+ * If the className exists on the node it is removed, if it doesn't exist it is added.
+ * @method toggleClass
+ * @param {HTMLElement} element The DOM element.
+ * @param {String} className the class name to be toggled
+ */
+ toggleClass: function(node, className) {
+ if (Y.DOM.hasClass(node, className)) {
+ Y.DOM.removeClass(node, className);
+ } else {
+ Y.DOM.addClass(node, className);
+ }
+ }
+});
+