/* Copyright (c) 2010 WordImpressed.com jFlow Plus derived from Kean Loong Tan's 
 * orgininal jFlow http://www.wordimpressed.com
 * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * jFlow 1.2 (Plus)
 * Version: jFlow Plus
 * Requires: jQuery 1.2+
 */
( function($) {
    $.fn.jFlow = function(options) {
        var opts = $.extend( {}, $.fn.jFlow.defaults, options);
        var randNum = Math.floor(Math.random() * 11);
        var jFC = opts.controller;
        var jFS = opts.slideWrapper;
        var jSel = opts.selectedWrapper;
        var cur = 0;
        var timer;
        var maxi = $(jFC).length;

        // sliding function
        var slide = function(dur, i) {
            $(opts.slides).children().css({
                overflow : "hidden"
            });

            $(opts.slides + " iframe").hide().addClass("temp_hide");
            $(opts.slides).animate(
                {marginLeft : "-" + (i * $(opts.slides).find(":first-child").width() + "px")}, 
                opts.duration * (dur), 
                opts.easing, 
                function() {
                    $(opts.slides).children().css({
                        overflow : "hidden"
                    });
                    $(".temp_hide").show();
                }
            );
        }

        $(this).find(jFC).each( function(i) {
            $(this).click( function() {
                dotimer();
                if ($(opts.slides).is(":not(:animated)")) {
                    $(jFC).removeClass(jSel);
                    $(this).addClass(jSel);
                    var dur = Math.abs(cur - i);
                    slide(dur, i);
                    cur = i;
                }
            });
        });

        $(opts.slides).before('<div id="' + jFS.substring(1, jFS.length) + '"></div>').appendTo(jFS);
        $(opts.slides).find("div").each( function() {
            $(this).before('<div class="jFlowSlideContainer"></div>').appendTo($(this).prev());
        });

        // initialize the controller
        $(jFC).eq(cur).addClass(jSel);

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

            // opts.slides or #mySlides container
            $(opts.slides).css( {
                position : "relative",
                width : $(jFS).width() * $(jFC).length + "px",
                height : $(jFS).height() + "px",
                overflow : "hidden"
            });

            // jFlowSlideContainer

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

            $(opts.slides).css({ 
                marginLeft : "-" + (cur * $(opts.slides).find(":eq(0)").width() + "px") 
            });
        }

        // sets initial size
        resize();

        // resets size
        $(window).resize( function() {
            resize();
        });

        $(opts.prev).click( function() {
            dotimer();
            doprev();

        });

        $(opts.next).click( function() {
            dotimer();
            donext();
        });

        var doprev = function(x) {
            if ($(opts.slides).is(":not(:animated)")) {
                var dur = 1;
                if (cur > 0)
                    cur--;
                else {
                    cur = maxi - 1;
                    dur = cur;
                }
                $(jFC).removeClass(jSel);
                slide(dur, cur);
                $(jFC).eq(cur).addClass(jSel);
            }
        }

        var donext = function(x) {
            if ($(opts.slides).is(":not(:animated)")) {
                var dur = 1;
                if (cur < maxi - 1)
                    cur++;
                else {
                    cur = 0;
                    dur = maxi - 1;
                }
                $(jFC).removeClass(jSel);
                // $(jFS).fadeOut("fast");
                slide(dur, cur);
                // $(jFS).fadeIn("fast");
                $(jFC).eq(cur).addClass(jSel);
            }
        }

        var dotimer = function(x) {
            if ((opts.auto) == true) {
                if (timer != null)
                    clearInterval(timer);
                timer = setInterval( function() {
                    $(opts.next).click();
                }, 8000);
            }
        }

        //Pause/Resume function fires at hover
        dotimer();

        $(opts.slides).hover(
            function() {
                clearInterval(timer);
            },
            function() {
                dotimer();
            }
        );
    };

    $.fn.jFlow.defaults = {
        controller : "#myController", // must be class, use . sign
        slideWrapper : "#mySlides", // must be id, use # sign
        selectedWrapper : ".jFlowSelected", // just pure text, no sign
        auto : true,
        easing : "swing",
        duration : 50,
        width : "100%",
        prev : ".jFlowPrev", // must be class, use . sign
        next : ".jFlowNext" // must be class, use . sign
    };

})(jQuery);