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Filename : bootstrap-tabdrop.js
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/* =========================================================

 * bootstrap-tabdrop.js 

 * http://www.eyecon.ro/bootstrap-tabdrop

 * =========================================================

 * Copyright 2012 Stefan Petre

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 * ========================================================= */

 

!function( $ ) {



	var WinReszier = (function(){

		var registered = [];

		var inited = false;

		var timer;

		var resize = function(ev) {

			clearTimeout(timer);

			timer = setTimeout(notify, 100);

		};

		var notify = function() {

			for(var i=0, cnt=registered.length; i<cnt; i++) {

				registered[i].apply();

			}

		};

		return {

			register: function(fn) {

				registered.push(fn);

				if (inited === false) {

					$(window).bind('resize', resize);

					inited = true;

				}

			},

			unregister: function(fn) {

				for(var i=0, cnt=registered.length; i<cnt; i++) {

					if (registered[i] == fn) {

						delete registered[i];

						break;

					}

				}

			}

		}

	}());



	var TabDrop = function(element, options) {

		this.element = $(element);

		this.dropdown = $('<li class="dropdown hide pull-right tabdrop"><a class="dropdown-toggle" data-toggle="dropdown" href="#">'+options.text+' <b class="caret"></b></a><ul class="dropdown-menu"></ul></li>')

							.prependTo(this.element);

		if (this.element.parent().is('.tabs-below')) {

			this.dropdown.addClass('dropup');

		}

		WinReszier.register($.proxy(this.layout, this));

		this.layout();

	};



	TabDrop.prototype = {

		constructor: TabDrop,



		layout: function() {

			var collection = [];

			this.dropdown.removeClass('hide');

			this.element

				.append(this.dropdown.find('li'))

				.find('>li')

				.not('.tabdrop')

				.each(function(){

					if(this.offsetTop > 0) {

						collection.push(this);

					}

				});

			if (collection.length > 0) {

				collection = $(collection);

				this.dropdown

					.find('ul')

					.empty()

					.append(collection);

				if (this.dropdown.find('.active').length == 1) {

					this.dropdown.addClass('active');

				} else {

					this.dropdown.removeClass('active');

				}

			} else {

				this.dropdown.addClass('hide');

			}

		}

	}



	$.fn.tabdrop = function ( option ) {

		return this.each(function () {

			var $this = $(this),

				data = $this.data('tabdrop'),

				options = typeof option === 'object' && option;

			if (!data)  {

				$this.data('tabdrop', (data = new TabDrop(this, $.extend({}, $.fn.tabdrop.defaults,options))));

			}

			if (typeof option == 'string') {

				data[option]();

			}

		})

	};



	$.fn.tabdrop.defaults = {

		text: '<i class="icon-align-justify"></i>'

	};



	$.fn.tabdrop.Constructor = TabDrop;



}( window.jQuery );