/*
 * jQuery infinitecarousel plugin
 * @author admin@catchmyfame.com - http://www.catchmyfame.com
 * @version 1.2.2
 * @date August 31, 2009
 * @category jQuery plugin
 * @copyright (c) 2009 admin@catchmyfame.com (www.catchmyfame.com)
 * @license CC Attribution-Share Alike 3.0 - http://creativecommons.org/licenses/by-sa/3.0/
 */

(function($) {
    $.fn.extend({
        infiniteCarousel: function(options) {
            var defaults =
			{
			    transitionSpeed: 1500,
			    displayTime: 6000,
			    textholderHeight: .2,
			    displayProgressBar: 1,
			    displayThumbnails: 1,
			    displayThumbnailNumbers: 1,
			    displayThumbnailBackground: 1,
			    thumbnailWidth: '20px',
			    thumbnailHeight: '20px',
			    thumbnailFontSize: '.7em'
			};
            var options = $.extend(defaults, options);

            return this.each(function() {
                var randID = Math.round(Math.random() * 100000000);
                var o = options;
                var obj = $(this);
                var curr = 1;

                var numImages = 0; //$('img', obj).length; // Number of images
                var imgHeight = 213; //$('img:first', obj).height();
                var imgWidth = 300; //$('img:first', obj).width();
                var autopilot = 1;

                $('p', obj).hide(); // Hide any text paragraphs in the carousel
                $(obj).width(imgWidth).height(imgHeight);

                // Build progress bar
                if (o.displayProgressBar) {
                    $(obj).append('<div id="progress' + randID + '" style="position:absolute;bottom:0;background:#bbb;left:' + $(obj).css('paddingLeft') + '"></div>');
                    $('#progress' + randID).width(imgWidth).height(5).css('opacity', '.5');
                }

                // Move last image and stick it on the front
                $(obj).css({ 'overflow': 'hidden', 'position': 'relative' });
                $('li:last', obj).prependTo($('ul', obj));
                $('ul', obj).css('left', -imgWidth + 'px');
                $('ul', obj).width(9999);

                $('ul', obj).css({ 'list-style': 'none', 'margin': '0', 'padding': '0', 'position': 'relative' });
                $('li', obj).css({ 'display': 'inline', 'float': 'left' });

                // Build textholder div thats as wide as the carousel and 20%-25% of the height
                $(obj).append('<div id="textholder' + randID + '" class="textholder" style="position:absolute;bottom:0px;margin-bottom:' + -imgHeight * o.textholderHeight + 'px;left:' + $(obj).css('paddingLeft') + '"></div>');
                var correctTHWidth = parseInt($('#textholder' + randID).css('paddingTop'));
                var correctTHHeight = parseInt($('#textholder' + randID).css('paddingRight'));
                $('#textholder' + randID).width(imgWidth - (correctTHWidth * 2)).height((imgHeight * o.textholderHeight) - (correctTHHeight * 2)).css({ 'backgroundColor': '#FFF', 'opacity': '0.5' });
                showtext($('li:eq(1) p', obj).html());

                // Prev/next button(img) 
                html = '<div id="btn_rt' + randID + '" style="position:absolute;right:0;top:' + ((imgHeight / 2) - 15) + 'px"><a href="javascript:void(0);"><img style="border:none;margin-right:2px" src="../images/rt.png" /></a></div>';
                html += '<div id="btn_lt' + randID + '" style="position:absolute;left:0;top:' + ((imgHeight / 2) - 15) + 'px"><a href="javascript:void(0);"><img style="border:none;margin-left:2px" src="../images/lt.png" /></a></div>';
                $(obj).append(html);

                // Pause/play button(img)	
                html = '<a href="javascript:void(0);"><img id="pause_btn' + randID + '" src="../images/pause.png" style="position:absolute;top:3px;right:3px;border:none" alt="Pause" /></a>';
                html += '<a href="javascript:void(0);"><img id="play_btn' + randID + '" src="../images/play.png" style="position:absolute;top:3px;right:3px;border:none;display:none;" alt="Play" /></a>';
                $(obj).append(html);
                $('#pause_btn' + randID).css('opacity', '.5').hover(function() { $(this).animate({ opacity: '1' }, 250) }, function() { $(this).animate({ opacity: '.5' }, 250) });
                $('#pause_btn' + randID).click(function() {
                    autopilot = 0;
                    $('#progress' + randID).stop().fadeOut();
                    clearTimeout(clearInt);
                    $('#pause_btn' + randID).fadeOut(250);
                    $('#play_btn' + randID).fadeIn(250);
                    showminmax();
                });
                $('#play_btn' + randID).css('opacity', '.5').hover(function() { $(this).animate({ opacity: '1' }, 250) }, function() { $(this).animate({ opacity: '.5' }, 250) });
                $('#play_btn' + randID).click(function() {
                    autopilot = 1;
                    anim('next');
                    $('#play_btn' + randID).hide();
                    clearInt = setInterval(function() { anim('next'); }, o.displayTime + o.transitionSpeed);
                    setTimeout(function() { $('#pause_btn' + randID).show(); $('#progress' + randID).fadeIn().width(imgWidth).height(5); }, o.transitionSpeed);
                });

                // Left and right arrow image button actions
                $('#btn_rt' + randID).css('opacity', '.75').click(function() {
                    autopilot = 0;
                    $('#progress' + randID).stop().fadeOut();
                    anim('next');
                    setTimeout(function() { $('#play_btn' + randID).fadeIn(250); }, o.transitionSpeed);
                    clearTimeout(clearInt);
                }).hover(function() { $(this).animate({ opacity: '1' }, 250) }, function() { $(this).animate({ opacity: '.75' }, 250) });
                $('#btn_lt' + randID).css('opacity', '.75').click(function() {
                    autopilot = 0;
                    $('#progress' + randID).stop().fadeOut();
                    anim('prev');
                    setTimeout(function() { $('#play_btn' + randID).fadeIn(250); }, o.transitionSpeed);
                    clearTimeout(clearInt);
                }).hover(function() { $(this).animate({ opacity: '1' }, 250) }, function() { $(this).animate({ opacity: '.75' }, 250) });

                if (o.displayThumbnails) {
                    // Build thumbnail viewer and thumbnail divs
                    $(obj).after('<div id="thumbs' + randID + '" style="position:relative;overflow:auto;text-align:left;padding-top:5px;"></div>');
                    $('#thumbs' + randID).width(imgWidth);
                    for (i = 0; i <= numImages - 1; i++) {
                        thumb = $('img:eq(' + (i + 1) + ')', obj).attr('src');
                        $('#thumbs' + randID).append('<div class="thumb" id="thumb' + randID + '_' + (i + 1) + '" style="cursor:pointer;background-image:url(' + thumb + ');display:inline;float:left;width:' + o.thumbnailWidth + ';height:' + o.thumbnailHeight + ';line-height:' + o.thumbnailHeight + ';padding:0;overflow:hidden;text-align:center;border:2px solid #ccc;margin-right:4px;font-size:' + o.thumbnailFontSize + ';font-family:Arial;color:#000;text-shadow:0 0 3px #fff">' + (i + 1) + '</div>');
                        if (i == 0) $('#thumb' + randID + '_1').css({ 'border-color': '#ff0000' });
                    }
                    // Next two lines are a special case to handle the first list element which was originally the last
                    thumb = $('img:first', obj).attr('src');
                    $('#thumb' + randID + '_' + numImages).css({ 'background-image': 'url(' + thumb + ')' });
                    $('#thumbs' + randID + ' div.thumb:not(:first)').css({ 'opacity': '.65' }); // makes all thumbs 65% opaque except the first one
                    $('#thumbs' + randID + ' div.thumb').hover(function() { $(this).animate({ 'opacity': .99 }, 150) }, function() { if (curr != this.id.split('_')[1]) $(this).animate({ 'opacity': .65 }, 250) }); // add hover to thumbs

                    // Assign click handler for the thumbnails. Normally the format $('.thumb') would work but since it's outside of our object (obj) it would get called multiple times
                    $('#thumbs' + randID + ' div').bind('click', thumbclick); // We use bind instead of just plain click so that we can repeatedly remove and reattach the handler

                    if (!o.displayThumbnailNumbers) $('#thumbs' + randID + ' div').text('');
                    if (!o.displayThumbnailBackground) $('#thumbs' + randID + ' div').css({ 'background-image': 'none' });
                }
                function thumbclick(event) {
                    target_num = this.id.split('_'); // we want target_num[1]
                    if (curr != target_num[1]) {
                        $('#thumb' + randID + '_' + curr).css({ 'border-color': '#ccc' });
                        $('#progress' + randID).stop().fadeOut();
                        clearTimeout(clearInt);
                        //alert(event.data.src+' '+this.id+' '+target_num[1]+' '+curr);
                        $('#thumbs' + randID + ' div').css({ 'cursor': 'default' }).unbind('click'); // Unbind the thumbnail click event until the transition has ended
                        autopilot = 0;
                        setTimeout(function() { $('#play_btn' + randID).fadeIn(250); }, o.transitionSpeed);
                    }
                    if (target_num[1] > curr) {
                        diff = target_num[1] - curr;
                        anim('next', diff);
                    }
                    if (target_num[1] < curr) {
                        diff = curr - target_num[1];
                        anim('prev', diff);
                    }
                }

                function showtext(t) {
                    // the text will always be the text of the second list item (if it exists)
                    if (t != null) {
                        $('#textholder' + randID).html(t).animate({ marginBottom: '0px' }, 500); // Raise textholder
                        showminmax();
                    }
                }
                function showminmax() {
                    if (!autopilot) {
                        html = '<img style="position:absolute;top:2px;right:18px;display:none;cursor:pointer" src="../images/down.png" title="Minimize" alt="minimize" id="min" /><img style="position:absolute;top:2px;right:18px;display:none;cursor:pointer" src="../images/up.png" title="Maximize" alt="maximize" id="max" />';
                        html += '<img style="position:absolute;top:2px;right:6px;display:none;cursor:pointer" src="../images/close.png" title="Close" alt="close" id="close" />';
                        $('#textholder' + randID).append(html);
                        $('#min').fadeIn(250).click(function() { $('#textholder' + randID).animate({ marginBottom: (-imgHeight * o.textholderHeight) - (correctTHHeight * 2) + 24 + 'px' }, 500, function() { $("#min,#max").toggle(); }); });
                        $('#max').click(function() { $('#textholder' + randID).animate({ marginBottom: '0px' }, 500, function() { $("#min,#max").toggle(); }); });
                        $('#close').fadeIn(250).click(function() { $('#textholder' + randID).animate({ marginBottom: (-imgHeight * o.textholderHeight) - (correctTHHeight * 2) + 'px' }, 500); });
                    }
                }
                function borderpatrol(elem) {
                    $('#thumbs' + randID + ' div').css({ 'border-color': '#ccc' }).animate({ opacity: 0.65 }, 500);
                    setTimeout(function() { elem.css({ 'border-color': '#ff0000' }).animate({ 'opacity': .99 }, 500); }, o.transitionSpeed);
                }
                function anim(direction, dist) {
                    // Fade left/right arrows out when transitioning
                    $('#btn_rt' + randID).fadeOut(500);
                    $('#btn_lt' + randID).fadeOut(500);

                    // animate textholder out of frame
                    $('#textholder' + randID).animate({ marginBottom: (-imgHeight * o.textholderHeight) - (correctTHHeight * 2) + 'px' }, 500);

                    //?? Fade out play/pause?
                    $('#pause_btn' + randID).fadeOut(250);
                    $('#play_btn' + randID).fadeOut(250);

                    if (direction == "next") {
                        if (curr == numImages) curr = 0;
                        if (dist > 1) {
                            borderpatrol($('#thumb' + randID + '_' + (curr + dist)));
                            $('li:lt(2)', obj).clone().insertAfter($('li:last', obj));
                            $('ul', obj).animate({ left: -imgWidth * (dist + 1) }, o.transitionSpeed, function() {
                                $('li:lt(2)', obj).remove();
                                for (j = 1; j <= dist - 2; j++) {
                                    $('li:first', obj).clone().insertAfter($('li:last', obj));
                                    $('li:first', obj).remove();
                                }
                                $('#btn_rt' + randID).fadeIn(500);
                                $('#btn_lt' + randID).fadeIn(500);
                                $('#play_btn' + randID).fadeIn(250);
                                showtext($('li:eq(1) p', obj).html());
                                $(this).css({ 'left': -imgWidth });
                                curr = curr + dist;
                                $('#thumbs' + randID + ' div').bind('click', thumbclick).css({ 'cursor': 'pointer' });
                            });
                        }
                        else {
                            borderpatrol($('#thumb' + randID + '_' + (curr + 1)));
                            $('#thumbs' + randID + ' div').css({ 'cursor': 'default' }).unbind('click'); // Unbind the thumbnail click event until the transition has ended
                            // Copy leftmost (first) li and insert it after the last li
                            $('li:first', obj).clone().insertAfter($('li:last', obj));
                            // Update width and left position of ul and animate ul to the left
                            $('ul', obj)
								.animate({ left: -imgWidth * 2 }, o.transitionSpeed, function() {
								    $('li:first', obj).remove();
								    $('ul', obj).css('left', -imgWidth + 'px');
								    $('#btn_rt' + randID).fadeIn(500);
								    $('#btn_lt' + randID).fadeIn(500);
								    if (autopilot) $('#pause_btn' + randID).fadeIn(250);
								    showtext($('li:eq(1) p', obj).html());
								    if (autopilot) {
								        $('#progress' + randID).width(imgWidth).height(5);
								        $('#progress' + randID).animate({ 'width': 0 }, o.displayTime, function() {
								            $('#pause_btn' + randID).fadeOut(50);
								            setTimeout(function() { $('#pause_btn' + randID).fadeIn(250) }, o.transitionSpeed)
								        });
								    }
								    curr = curr + 1;
								    $('#thumbs' + randID + ' div').bind('click', thumbclick).css({ 'cursor': 'pointer' });
								});
                        }
                    }
                    if (direction == "prev") {
                        if (dist > 1) {
                            borderpatrol($('#thumb' + randID + '_' + (curr - dist)));
                            $('li:gt(' + (numImages - (dist + 1)) + ')', obj).clone().insertBefore($('li:first', obj));
                            $('ul', obj).css({ 'left': (-imgWidth * (dist + 1)) }).animate({ left: -imgWidth }, o.transitionSpeed, function() {
                                $('li:gt(' + (numImages - 1) + ')', obj).remove();
                                $('#btn_rt' + randID).fadeIn(500);
                                $('#btn_lt' + randID).fadeIn(500);
                                $('#play_btn' + randID).fadeIn(250);
                                showtext($('li:eq(1) p', obj).html());
                                curr = curr - dist;
                                $('#thumbs' + randID + ' div').bind('click', thumbclick).css({ 'cursor': 'pointer' });
                            });
                        }
                        else {
                            borderpatrol($('#thumb' + randID + '_' + (curr - 1)));
                            $('#thumbs' + randID + ' div').css({ 'cursor': 'default' }).unbind('click'); // Unbind the thumbnail click event until the transition has ended
                            // Copy rightmost (last) li and insert it after the first li
                            $('li:last', obj).clone().insertBefore($('li:first', obj));
                            // Update width and left position of ul and animate ul to the right
                            $('ul', obj)
								.css('left', -imgWidth * 2 + 'px')
								.animate({ left: -imgWidth }, o.transitionSpeed, function() {
								    $('li:last', obj).remove();
								    $('#btn_rt' + randID).fadeIn(500);
								    $('#btn_lt' + randID).fadeIn(500);
								    if (autopilot) $('#pause_btn' + randID).fadeIn(250);
								    showtext($('li:eq(1) p', obj).html());
								    curr = curr - 1;
								    if (curr == 0) curr = numImages;
								    $('#thumbs' + randID + ' div').bind('click', thumbclick).css({ 'cursor': 'pointer' });
								});
                        }
                    }
                }

                var clearInt = setInterval(function() { anim('next'); }, o.displayTime + o.transitionSpeed);
                $('#progress' + randID).animate({ 'width': 0 }, o.displayTime + o.transitionSpeed, function() {
                    $('#pause_btn' + randID).fadeOut(100);
                    setTimeout(function() { $('#pause_btn' + randID).fadeIn(250) }, o.transitionSpeed)
                });
            });
        }
    });
})(jQuery);