/*
 *   Easy Paginate 1.0 - jQuery plugin
 *  written by Alen Grakalic  
 *  http://cssglobe.com/
 *
 *  Copyright (c) 2011 Alen Grakalic (http://cssglobe.com)
 *  Dual licensed under the MIT (MIT-LICENSE.txt)
 *  and GPL (GPL-LICENSE.txt) licenses.
 *
 *  Built for jQuery library
 *  http://jquery.com
 *
 */

(function($) {

    $.fn.easyPaginate = function(options) {

        var defaults = {
            step: 4,
            delay: 100,
            numeric: true,
            nextprev: true,
            auto: false,
            pause: 4000,
            clickstop: true,
            controls: 'pagination',
            current: 'current',
            page: 1
        };

        var options = $.extend(defaults, options);
        var step = options.step;
        var lower, upper;
        var children = $(this).children();
        var count = children.length;
        var obj, next, prev;
        var page = options.page;  
        var timeout;
        var clicked = false;


        function show() {
            clearTimeout(timeout);
            lower = ((page - 1) * step);
            upper = lower + step;
            $(children).each(function(i) {
                var child = $(this);
                child.hide();
                if (i >= lower && i < upper) { setTimeout(function() { child.fadeIn('fast') }, (i - (Math.floor(i / step) * step)) * options.delay); }
                if (options.nextprev) {
                    if (upper >= count) { next.fadeOut('fast'); } else { next.fadeIn('fast'); };
                    if (lower >= 1) { prev.fadeIn('fast'); } else { prev.fadeOut('fast'); };
                };
            });
            $('li', '#' + options.controls).removeClass(options.current);
            $('li[data-index="' + page + '"]', '#' + options.controls).addClass(options.current);
            

            if (options.auto) {
                if (options.clickstop && clicked) { } else { timeout = setTimeout(auto, options.pause); };
            };
        };

        function auto() {
            if (upper <= count) { page++; show(); }
        };

        this.each(function() {

            obj = this;

            if (count > step) {

                var pages = Math.floor(count / step);
                if ((count / step) > pages) pages++;

                var ol = $('<ol id="' + options.controls + '"></ol>').insertAfter(obj);

                if (options.nextprev) {
                    prev = $('<li class="prev"><img src="files/navigation/red_arrow_left.gif"/></li>')
            .hide()
            .appendTo(ol)
            .click(function() {
                clicked = true;
                page--;
                show();
            });
                };

                if (options.numeric) {
                    for (var i = 1; i <= pages; i++) {
                        $('<li data-index="' + i + '">' + i + '/' + pages + '</li>')
                    
            .appendTo(ol)
            .click(function() {
                clicked = true;
                page = $(this).attr('data-index');
                show();
            });
                   };
                };

                if (options.nextprev) {
                    next = $('<li class="next"><img src="files/navigation/red_arrow_right.gif"/></li>')
            .hide()
            .appendTo(ol)
            .click(function() {
                clicked = true;
                page++;
                show();
            });
                };

                show();
            };
        });

    };

})(jQuery);