/* Copyright (c) 2008 Kean Loong Tan http://www.gimiti.com/kltan
* Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
* jFlow
* Version: 1.0 (May 13, 2008)
* Requires: jQuery 1.2+
*/

(function($) {

    $.fn.jFlow = function(options) {
        var opts = $.extend({}, $.fn.jFlow.defaults, options);
        var cur = 0;
        var stopRotate = 0; // added to allow automatic rotation of slides
        var maxi = $(".jFlowControl").length;
        $(this).find(".jFlowControl").each(function(i) {
            $(this).click(function() {
                stopRotate = 1;
                $(".jFlowControl").removeClass("jFlowSelected");
                $(this).addClass("jFlowSelected");
                var dur = Math.abs(cur - i + 1);
                $(opts.slides).animate({
                    marginLeft: "-" + (i * $(opts.slides).find(":first-child").width() + "px")
                }, opts.duration * (dur));
                cur = i;
            });
        });

        $(opts.slides).before('<div id="jFlowSlide"></div>').appendTo("#jFlowSlide");

        $(opts.slides).find("div").each(function() {
            $(this).before('<div class="jFlowSlideContainer"></div>').appendTo($(this).prev());
        });

        //initialize the controller
        $(".jFlowControl").eq(cur).addClass("jFlowSelected");

        var resize = function(x) {
            $("#jFlowSlide").css({
                position: "relative",
                width: opts.width,
                height: opts.height,
                overflow: "hidden"
            });

            $(opts.slides).css({
                position: "relative",
                width: $("#jFlowSlide").width() * $(".jFlowControl").length + "px",
                height: $("#jFlowSlide").height() + "px",
                overflow: "hidden"
            });

            $(opts.slides).children().css({
                position: "relative",
                width: $("#jFlowSlide").width() + "px",
                height: $("#jFlowSlide").height() + "px",
                "float": "left"
            });

            $(opts.slides).css({
                marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
            });
        }

        resize();

        $(window).resize(function() {
            resize();
        });

        $(".jFlowPrev").click(function() {
            if (cur > 0)
                cur--;
            else
                cur = maxi - 1;

            $(".jFlowControl").removeClass("jFlowSelected");
            $(opts.slides).animate({
                marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
            }, opts.duration);
            $(".jFlowControl").eq(cur).addClass("jFlowSelected");
        });

        $(".jFlowNext").click(function() {
            if (cur < maxi - 1)
                cur++;
            else
                cur = 0;

            $(".jFlowControl").removeClass("jFlowSelected");
            $(opts.slides).animate({
                marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
            }, opts.duration);
            $(".jFlowControl").eq(cur).addClass("jFlowSelected");
        });
        // added to allow automatic rotation of slides
        if (opts.autoFlow == "true") {
            $(document).ready(function() {
                $.timer(8000, function(timer) {
                    if (stopRotate == 0) {
                        if (cur < maxi - 1)
                            cur++;
                        else
                            cur = 0;

                        $(".jFlowControl").removeClass("jFlowSelected");
                        $(opts.slides).animate({
                            marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
                        }, opts.duration);
                        $(".jFlowControl").eq(cur).addClass("jFlowSelected");
                    } else {
                        timer.stop();
                    }
                });
            });
        }
        // end auto rotate
    };

    $.fn.jFlow.defaults = {
        easing: "swing",
        duration: 400,
        width: "100%",
        autoFlow: "true" // added to allow automatic rotation of slides
    };

})(jQuery);