/**
 * Copyright (c) 2011 Cory Schires (coryschires.com)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Version: 0.1.0
 */

(function($) {
    $.fn.customFadeIn = function(speed, callback) {
        $(this).fadeIn(speed, function() {
            if (jQuery.browser.msie)
                $(this).get(0).style.removeAttribute('filter');
            if (callback != undefined)
                callback();
        });
    };
    $.fn.customFadeOut = function(speed, callback) {
        $(this).fadeOut(speed, function() {
            if (jQuery.browser.msie)
                $(this).get(0).style.removeAttribute('filter');
            if (callback != undefined)
                callback();
        });
    };
})(jQuery);

(function($) {

    $.quote_rotator = {
        defaults: {
            rotation_speed: 13000,
            pause_on_hover: true,
            randomize_first_quote: false
        }
    }

    $.fn.extend({
        quote_rotator: function(config) {

            var config = $.extend({}, $.quote_rotator.defaults, config);

            return this.each(function() {

                // cache for selector performance
                var quote_list = $(this);
                var list_items = quote_list.find('li');

                // prevent dummies from setting the rotation speed too fast
                var rotation_speed = config.rotation_speed < 2000 ? 2000 : config.rotation_speed;

                // hide all the quotes
                list_items.hide();

                // apply active to random quote if specified
                if (config.randomize_first_quote) {
                    var random = Math.floor(Math.random() * (list_items.length));
                    $(list_items[random]).addClass('active');

                    // otherwise apply active to first quote unless already applied in the html
                } else if (!(quote_list.find('li.active')).length) {
                    $('li:first', quote_list).addClass('active');
                };

                // show the active quote 
                quote_list.find('li.active').show();

                // activate quote rotation
                var rotation_active = true;

                // stop quote rotation on hover
                quote_list.hover(function() {
                    if (config.pause_on_hover) { rotation_active = false };
                }, function() {
                    rotation_active = true
                });

                // rotate quotes
                setInterval(function() {
                    if (rotation_active) {

                        var active_quote = quote_list.find('li.active');
                        var next_quote = active_quote.next().length ? active_quote.next() : quote_list.find('li:first');

                        // rotate quotes with fade effect
                        active_quote.animate({
                            opacity: 0 // fade out active quote
                        }, 1000, function() {
                            active_quote.css({ opacity: '1', zIndex: 90 }).hide(); // hide and reset opacity
                            //next_quote.fadeIn(1000); // fade in next quote
                            next_quote.css({ zIndex: 99 }).customFadeIn(1000); // fade in next quote
                        });

                        // swap the class to prepare for the next fade effect interal
                        active_quote.removeClass('active');
                        next_quote.addClass('active');
                    };

                }, rotation_speed);

            })
        }
    })

})(jQuery);