/*
 * 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: 5000,
			  textholderHeight: .2,
			  displayProgressBar: 1,
			  displayThumbnails: 1,
			  displayThumbnailNumbers: 1,
			  displayThumbnailBackground: 1,
			  thumbnailWidth: '20px',
			  thumbnailHeight: '20px',
			  thumbnailFontSize: '.7em',
			  iconPath: 'images/'          // added by akio
			};
      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 = $('img', obj).length; // Number of images
        var imgHeight = $('img:first', obj).height();
        var imgWidth = $('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="' + o.iconPath + '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="' + o.iconPath + 'lt.png" /></a></div>';
        $(obj).append(html);

        // Pause/play button(img)	
        html = '<a href="javascript:void(0);"><img id="pause_btn' + randID + '" src="' + o.iconPath + '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="' + o.iconPath + '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 10px;overflow:hidden;text-align:center;border:2px solid #aaa;margin-right:6px;font-size:' + o.thumbnailFontSize + ';font-family:Arial;color:#ccc;text-shadow:0 0 3px #ccc">' + (i + 1) + '</div>');
            if (i == 0) $('#thumb' + randID + '_1').css({ 'border-color': '#990000' });
          }
          // 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="' + o.iconPath + 'down.png" title="Minimize" alt="minimize" id="min" /><img style="position:absolute;top:2px;right:18px;display:none;cursor:pointer" src="' + o.iconPath + 'up.png" title="Maximize" alt="maximize" id="max" />';
            html += '<img style="position:absolute;top:2px;right:6px;display:none;cursor:pointer" src="' + o.iconPath + '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);