/*
 * jQuery infinitecarousel plugin
 * @author admin@catchmyfame.com - http://www.catchmyfame.com
 * @version 1.0.1
 * @date July 31, 2009
 * @category jQuery plugin
 * @copyright (c) 2009 admin@catchmyfame.com (www.catchmyfame.com)
 * @license CC Attribution-No Derivative Works 3.0 - http://creativecommons.org/licenses/by-nd/3.0/
 */

(function($){
  $.fn.extend({
    infiniteCarousel: function(options)
    {
      var defaults =
      {
        transitionSpeed : 1500,
        displayTime : 6000,
        textholderHeight : .2,
        displayProgressBar : 1
      };
    var options = $.extend(defaults, options);

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

        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');

        // 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="img/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="img/lt.png" /></a></div>';
        $(obj).append(html);

        // Pause/play button(img)
        html = '<a href="javascript:void(0);"><img id="pause_btn'+randID+'" src="img/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="img/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)});

        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="img/down.png" title="Minimize" alt="minimize" id="min" /><img style="position:absolute;top:2px;right:18px;display:none;cursor:pointer" src="/js/infiniteCarousel/images/up.png" title="Maximize" alt="maximize" id="max" />';
              html += '<img style="position:absolute;top:2px;right:6px;display:none;cursor:pointer" src="img/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 anim(direction)
        {
          // 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")
          {
            // 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)
              .width(imgWidth*(numImages+1))
              .animate({left:-imgWidth*2},o.transitionSpeed,function(){
                $('li:first', obj).remove();
                $('ul', obj).css('left',-imgWidth+'px').width(imgWidth*numImages);
                $('#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)
                  });
                }
              });
          }
          if(direction == "prev")
          {
            // 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)
              .width(imgWidth*(numImages+1))
              .css('left',-imgWidth*2+'px')
              .animate({left:-imgWidth},o.transitionSpeed,function(){
                $('li:last', obj).remove();
                $('ul', obj).width(imgWidth*numImages);
                $('#btn_rt'+randID).fadeIn(500);
                $('#btn_lt'+randID).fadeIn(500);
                if(autopilot) $('#pause_btn'+randID).fadeIn(250);
                showtext($('li:eq(1) p', obj).html());
              });
          }
        }
        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);