/**
 * Light jQuery tab plugin
 *
 * the html structure is:
 *
 * <div id="generalid">
 *  <ul class="tabbar">
 *      <li><a href="#tab-1">Title 1</a></li>
 *  </ul>
 *  <div id="tab-1">
 *      Content 1
 *  </div>
 * </div>
 */
(function( $ ){

    var methods = {

        /**
         * Initialise the general tab area
         * @return this (to preserve chainability)
         */
        init: function() {
            var tabs = this;
            this.find('ul.tabbar li').bind('click.tabs', function(event){
                event.preventDefault();
                tabs.tabs('select',$(this).find('a').attr('href'));
            });
            this.data('tabs',{});
            return this;
        },

        /**
         * Select a tab
         * @param {String} id The tab id with #
         * @return this
         */
        select: function(id) {
            var selectedId = this.data('tabs').selected;

            if ( selectedId == id) {
                return this;
            }

            this.find('ul.tabbar li a[href="' + selectedId + '"]').parent().removeClass('selected');
            this.find('ul.tabbar li a[href="' + id + '"]').parent().addClass('selected');
            $(selectedId).hide();
            $(id).show();
            this.data('tabs').selected = id;
            return this;
        },

        /**
         * Add a tab
         * @param {String} name The tab Title
         * @param {String} id The tab id without #
         * @pram {Bool} remove Wether the tab should be closable
         * return this
         */
        add: function(name, id, remove) {
            var tabs = this;
            var li = $('<li><a href="#' + id + '">' + name +'</a></li>');

            if ( remove ) {
                li.append('<span class="tab-close"/>');
                li.find('.tab-close').bind('click', function() {
                    tabs.tabs('remove', '#'+id);
                });
            }

            li.bind('click.tabs',function(event){
                event.preventDefault();
                tabs.tabs('select',$(this).find('a').attr('href'));
            });
            $(this).find('ul.tabbar').append(li);
            $(this).append('<div class="tab" id="' + id + '"></div>');
            return this;
        },

        /**
         * Test if a tab exists
         * @param {String} id The tab id with #
         * @return {Bool}
         */
        exist: function(id) {
            return (this.find('ul.tabbar li a[href="' + id + '"]').length != 0);
        },

        /**
         * Remove a tab
         * @param {String} id The tab id with #
         * @return this
         */
        remove: function(id) {
            this.find('ul.tabbar li a[href="' + id + '"]').parent().remove();
            $(id).remove();

            if (this.data('tabs').selected == id) {
                var first = this.find('ul.tabbar li:first a').attr('href');
                this.tabs('select', first);
            }
        }
   };

    /*
     * Register the 'tabs' method to the jQuery objects
     * the first argument of this method is the submethod
     * you want to call
     */
    $.fn.tabs = function(method) {
        if ( methods[method] ) {
            return methods[method].apply(this, Array.prototype.slice
                                         .call(arguments, 1));
        } else if ( typeof method === 'object' || !method ) {
            return methods.init.apply(this, arguments);
        } else {
            $.error('Method ' + method + ' does not exist on jQuery.tabs');
        }
    };

})(jQuery);