/*
 * jQuery clueTip plugin
 * Version 0.9.8  (05/22/2008)
 * @requires jQuery v1.1.4+
 * @requires Dimensions plugin (for jQuery versions < 1.2.5)
 *
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */
;(function($) {
  var $cluetip, $cluetipInner, $cluetipOuter, $cluetipTitle, $cluetipArrows, imgCount;
  $.fn.cluetip = function(js, options) {
    if (typeof js == 'object') {
      options = js;
      js = null;
    }
    return this.each(function(index) {
      var $this = $(this);      
      
      // support metadata plugin (v1.0 and 2.0)
      var opts = $.extend(false, {}, $.fn.cluetip.defaults, options || {}, $.metadata ? $this.metadata() : $.meta ? $this.data() : {});

      // start out with no contents (for ajax activation)
      var cluetipContents = false;
      var cluezIndex = parseInt(opts.cluezIndex, 10)-1;
      var isActive = false, closeOnDelay = 0;

      // create the cluetip divs
      if (!$('#cluetip').length) {
      	$cluetipTitle = $('<h3 id="cluetip-title"></h3>');
        $cluetipInner = $('<div id="cluetip-inner"></div>')
        $cluetipTop = $('<div class="popinfo_top"></div>');
        $cluetipBottom = $('<div class="popinfo_bot"></div>');
        $cluetipOuter = $('<div id="cluetip-outer"></div>').append($cluetipTop).append($cluetipInner).append($cluetipBottom);
        //$cluetipOuter = $('<div id="cluetip-outer"></div>').append($cluetipInner).prepend($cluetipTitle);
        $popShadow = $('<div class="popshadow"><div><div class="popshadtop"><img src="images/shadow_top.gif" width="275" height="20" alt="" /></div><div class="popshadmid"></div><div class="popshadbot"><img src="images/shadow_bottom.gif" width="275" height="20" alt="" /></div></div></div>');
        $cluetip = $('<div id="cluetip"></div>').css({zIndex: opts.cluezIndex})
        .append($popShadow).append($cluetipOuter)[insertionType](insertionElement).hide();
        //$('<div id="cluetip-waitimage"></div>').css({position: 'absolute', zIndex: cluezIndex-1})
        //.insertBefore('#cluetip').hide();
        $cluetip.css({position: 'absolute', zIndex: cluezIndex});
        $cluetipOuter.css({position: 'relative', zIndex: cluezIndex+1});
        $cluetipArrows = $('<div id="cluetip-arrows" class="cluetip-arrows"></div>').css({zIndex: cluezIndex+1}).appendTo('#cluetip');
      }
      //var tipAttribute = $this.attr(opts.attribute), ctClass = opts.cluetipClass;
      // Yogaglo only
      var tipAttribute = $(this).children("a:first").attr(opts.attribute), ctClass = opts.cluetipClass;
      if (!tipAttribute && !opts.splitTitle && !js) return true;
      var tOffset = parseInt(opts.topOffset, 10), lOffset = parseInt(opts.leftOffset, 10);
      // vertical measurement variables
      var tipHeight, wHeight;
      var defHeight = isNaN(parseInt(opts.height, 10)) ? 'auto' : (/\D/g).test(opts.height) ? opts.height : opts.height + 'px';
      var sTop, linkTop, posY, tipY, mouseY, baseline;
      // horizontal measurement variables
      var tipInnerWidth = 275;
      var tipWidth = tipInnerWidth + (parseInt($cluetip.css('paddingLeft'))||0) + (parseInt($cluetip.css('paddingRight'))||0);
      var linkWidth = this.offsetWidth;
      var linkLeft, posX, tipX, mouseX, winWidth;
            
      // parse the title
      var tipParts;
      var tipTitle = (opts.attribute != 'title') ? $this.attr(opts.titleAttribute) : '';
      if (opts.splitTitle) {
        if(tipTitle == undefined) {tipTitle = '';}
        tipParts = tipTitle.split(opts.splitTitle);
        tipTitle = tipParts.shift();
      }
      var localContent;

/***************************************      
* ACTIVATION
****************************************/
    
//activate clueTip
    var activate = function(event) {
      if (!opts.onActivate($this)) {
        return false;
      }
      isActive = true;
      $cluetip.removeClass().css({width: tipInnerWidth});
      if (tipAttribute == $this.attr('href')) {
        $this.css('cursor', opts.cursor);
      }
      $this.attr('title','');
      if (opts.hoverClass) {
        $this.addClass(opts.hoverClass);
      }
      linkTop = posY = $this.offset().top;
      linkLeft = $this.offset().left;
      mouseX = event.pageX;
      mouseY = event.pageY;
      if ($this[0].tagName.toLowerCase() != 'area') {
        sTop = $(document).scrollTop();
        winWidth = $(window).width();
      }
// position clueTip horizontally
      if (opts.positionBy == 'fixed') {
        posX = linkWidth + linkLeft + lOffset;
        $cluetip.css({left: posX});
      } else {
        posX = (linkWidth > linkLeft && linkLeft > tipWidth)
          || linkLeft + linkWidth + tipWidth + lOffset > winWidth 
          ? linkLeft - tipWidth - lOffset 
          : linkWidth + linkLeft + lOffset;
        if ($this[0].tagName.toLowerCase() == 'area' || opts.positionBy == 'mouse' || linkWidth + tipWidth > winWidth) { // position by mouse
          if (mouseX + 20 + tipWidth > winWidth) {  
            $cluetip.addClass(' cluetip-' + ctClass);
            posX = (mouseX - tipWidth - lOffset) >= 0 ? mouseX - tipWidth - lOffset - parseInt($cluetip.css('marginLeft'),10) + parseInt($cluetipInner.css('marginRight'),10) :  mouseX - (tipWidth/2);
          } else {
            posX = mouseX + lOffset;
          }
        }
        var pY = posX < 0 ? event.pageY + tOffset : event.pageY;
        $cluetip.css({left: (posX > 0 && opts.positionBy != 'bottomTop') ? posX : (mouseX + (tipWidth/2) > winWidth) ? winWidth/2 - tipWidth/2 : Math.max(mouseX - (tipWidth/2),0)});
      }
        wHeight = $(window).height();

/***************************************
* load a string from cluetip method's first argument
***************************************/
      if (js) {
        $cluetipInner.html(js);
        cluetipShow(pY);
      }
/***************************************
* load the title attribute only (or user-selected attribute). 
* clueTip title is the string before the first delimiter
* subsequent delimiters place clueTip body text on separate lines
***************************************/

      else if (tipParts) {
        var tpl = tipParts.length;
        for (var i=0; i < tpl; i++){
          if (i == 0) {
            $cluetipInner.html(tipParts[i]);
          } else { 
            $cluetipInner.append('<div class="split-body">' + tipParts[i] + '</div>');
          }            
        };
        cluetipShow(pY);
      }
/***************************************
* load external file via ajax          
***************************************/

      else if (tipAttribute.indexOf('#') != 0) {
        if (cluetipContents && opts.ajaxCache) {
          $cluetipInner.html(cluetipContents);
          cluetipShow(pY);
        }
        else {
          var ajaxSettings = opts.ajaxSettings;
          ajaxSettings.url = tipAttribute;
          ajaxSettings.beforeSend = function() {
            $cluetipOuter.children().empty();
            //if (opts.waitImage) {
            //  $('#cluetip-waitimage')
            //  .css({top: mouseY+20, left: mouseX+20})
            //  .show();
            //}
          };
         ajaxSettings.error = function() {
            if (isActive) {
              $cluetipInner.html('<i>sorry, the contents could not be loaded</i>');
            }
          };
          ajaxSettings.success = function(data) {
            var chksplit = opts.ajaxProcess(data)
            if(chksplit.indexOf('|||||') == -1){
                  cluetipContents = chksplit+'<br /><br />';
            }else{
                  var classinfo = opts.ajaxProcess(data).split('|||||', 4);
                  cluetipContents =
                      '<b>Style: </b>'+classinfo[0]+'<br />'+
                      '<b>Level: </b>'+classinfo[1]+'<br />'+
                      '<b>Teacher: </b>'+classinfo[2]+'<br />'+
                      '<br /><div class="grayline"></div><br />'+classinfo[3];
            }
            if (isActive) {
              $cluetipInner.html(cluetipContents);
            }
          };
          ajaxSettings.complete = function() {
          	imgCount = $('#cluetip-inner img').length;
        		if (imgCount && !$.browser.opera) {
        		  $('#cluetip-inner img').load(function() {
          			imgCount--;
          			if (imgCount<1) {
          				//$('#cluetip-waitimage').hide();
          			  if (isActive) cluetipShow(pY);
          			}
        		  }); 
        		} else {
      				//$('#cluetip-waitimage').hide();
        		  if (isActive) cluetipShow(pY);    
        		} 
          };
          $.ajax(ajaxSettings);
        }
      }
    };

// get dimensions and options for cluetip and prepare it to be shown
    var cluetipShow = function(bpY) {
      $cluetip.addClass('cluetip-' + ctClass);
      
      if (opts.truncate) { 
        var $truncloaded = $cluetipInner.text().slice(0,opts.truncate) + '...';
        $cluetipInner.html($truncloaded);
      }
      function doNothing() {}; //empty function
      //tipTitle ? $cluetipTitle.show().html(tipTitle) : (opts.showTitle) ? $cluetipTitle.show().html('&nbsp;') : $cluetipTitle.hide();
      if (opts.sticky) {
        var $closeLink = $('<div id="cluetip-close"><a href="#">' + opts.closeText + '</a></div>');
        (opts.closePosition == 'bottom') ? $closeLink.appendTo($cluetipInner) : (opts.closePosition == 'title') ? $closeLink.prependTo($cluetipTitle) : $closeLink.prependTo($cluetipInner);
        $closeLink.click(function() {
          cluetipClose();
          return false;
        });
        if (opts.mouseOutClose) {
          if ($.fn.hoverIntent && opts.hoverIntent) { 
            $cluetip.hoverIntent({
              over: doNothing, 
              timeout: opts.hoverIntent.timeout,  
              out: function() { $closeLink.trigger('click'); }
            });
          } else {
            $cluetip.hover(doNothing, 
            function() {$closeLink.trigger('click'); });
          }
        } else {
          $cluetip.unbind('mouseout');
        }
      }
// now that content is loaded, finish the positioning 
      var direction = '';
      $cluetipOuter.css({overflow: defHeight == 'auto' ? 'visible' : 'auto', height: defHeight});
      tipHeight = defHeight == 'auto' ? Math.max($cluetip.outerHeight(),$cluetip.height()) : parseInt(defHeight,10);   
      tipY = posY;
      baseline = sTop + wHeight;
      if ( posY + tipHeight + tOffset > baseline ) {
        tipY = (tipHeight >= wHeight) ? sTop : baseline - tipHeight - tOffset;
      } else if ($this[0].className == 'vt_content') {
      	// index.php
      	if (posY < sTop) {
      	  tipY = mouseY - 10;
      	} else {
          tipY = posY + 10;
      	}
      } else {
        tipY = posY;
      }
      if (direction == '') {
        posX < linkLeft ? direction = 'left' : direction = 'right';
      }
      // arrows
      $cluetip.css({top: tipY + 'px'}).removeClass().addClass('popinfo_arrow_' + direction).addClass(' cluetip-' + ctClass);
      var arrowtop;
      var bgY = posY - tipY;
      //if (posY + tipHeight + tOffset > baseline) {
      if (posY + tipHeight + tOffset > baseline) {
      	arrowtop = tipHeight - 35 + 'px';
      } else if (bgY > 0) {
      	arrowtop = bgY + 'px';
      } else {
      	arrowtop = '24px';
      }
      //$cluetipArrows.css({top: (posX >=0 && bgY > 0) ? bgY + 'px' : '24px'}).show();
      $cluetipArrows.css({top: arrowtop}).show();

// (first hide, then) ***SHOW THE CLUETIP***
      //$cluetip.hide()[opts.fx.open](opts.fx.open != 'show' && opts.fx.openSpeed);
      $cluetip.hide().show();
      if ($.fn.bgiframe) { $cluetip.bgiframe(); }
      // trigger the optional onShow function
      if (opts.delayedClose > 0) {
        closeOnDelay = setTimeout(cluetipClose, opts.delayedClose);
      }
      //opts.onShow($cluetip, $cluetipInner);
      
    };

/***************************************
   =INACTIVATION
-------------------------------------- */
    var inactivate = function() {
      isActive = false;
      //$('#cluetip-waitimage').hide();
      if (!opts.sticky || (/click|toggle/).test(opts.activation) ) {
        cluetipClose();
clearTimeout(closeOnDelay);        
      };
      if (opts.hoverClass) {
        $this.removeClass(opts.hoverClass);
      }
      $('.cluetip-clicked').removeClass('cluetip-clicked');
    };
// close cluetip and reset some things
    var cluetipClose = function() {
      //$cluetipOuter
      //.parent().hide().removeClass().end()
      //.children().empty();
      $cluetip.hide();
      //if (tipTitle) {
      //  $this.attr(opts.titleAttribute, tipTitle);
      //}
      $this.css('cursor','');
      if (opts.arrows) $cluetipArrows.css({top: ''});
    };

/***************************************
   =BIND EVENTS
-------------------------------------- */
  // activate by click
      if ( (/click|toggle/).test(opts.activation) ) {
        $this.click(function(event) {
          if ($cluetip.is(':hidden') || !$this.is('.cluetip-clicked')) {
            activate(event);
            $('.cluetip-clicked').removeClass('cluetip-clicked');
            $this.addClass('cluetip-clicked');

          } else {
            inactivate(event);

          }
          this.blur();
          return false;
        });
  // activate by focus; inactivate by blur    
      } else if (opts.activation == 'focus') {
        $this.focus(function(event) {
          activate(event);
        });
        $this.blur(function(event) {
          inactivate(event);
        });
  // activate by hover
    // clicking is returned false if cluetip url is same as href url
      } else {
        $this.click(function() {
          if ($this.attr('href') && $this.attr('href') == tipAttribute && !opts.clickThrough) {
            return false;
          }
        });
        //set up mouse tracking
        var mouseTracks = function(evt) {
          if (opts.tracking == true) {
            var trackX = posX - evt.pageX;
            var trackY = tipY ? tipY - evt.pageY : posY - evt.pageY;
            $this.mousemove(function(evt) {
              $cluetip.css({left: evt.pageX + trackX, top: evt.pageY + trackY });
            });
          }
        };
        if ($.fn.hoverIntent && opts.hoverIntent) {
          //$this.mouseover(function() {$this.attr('title',''); })
          //from yogaglo.js//$("div[class=vt_content]").hover(function(){$("div[class=vt_arrow]",this).show(0);},function(){$("div[class=vt_arrow]",this).hide(0);});
          $this.mouseover(function() {$("div[class=vt_arrow]",this).show(0);})
          .hoverIntent({
            sensitivity: opts.hoverIntent.sensitivity,
            interval: opts.hoverIntent.interval,  
            over: function(event) {
              activate(event);
              mouseTracks(event);
            }, 
            timeout: opts.hoverIntent.timeout,  
            out: function(event) {inactivate(event); $this.unbind('mousemove');}
          });
          $this.mouseout(function() {$("div[class=vt_arrow]",this).hide(0);})
        } else {
          $this.hover(function(event) {
            activate(event);
            mouseTracks(event);
          }, function(event) {
            inactivate(event);
            $this.unbind('mousemove');
          });
        }
      }
    });
  };
  
/*
 * options for clueTip
 *
 * each one can be explicitly overridden by changing its value. 
 * for example: $.fn.cluetip.defaults.width = 200; 
 * would change the default width for all clueTips to 200. 
 *
 * each one can also be overridden by passing an options map to the cluetip method.
 * for example: $('a.example').cluetip({width: 200}); 
 * would change the default width to 200 for clueTips invoked by a link with class of "example"
 *
 */
  
  $.fn.cluetip.defaults = {  // set up default options
    width:            275,      // The width of the clueTip
    height:           'auto',   // The height of the clueTip
    cluezIndex:       97,       // Sets the z-index style property of the clueTip
    positionBy:       'auto',   // Sets the type of positioning: 'auto', 'mouse','bottomTop', 'fixed'
    topOffset:        15,       // Number of px to offset clueTip from top of invoking element
    leftOffset:       15,       // Number of px to offset clueTip from left of invoking element
    attribute:        'rel',    // the attribute to be used for fetching the clueTip's body content
    titleAttribute:   'title',  // the attribute to be used for fetching the clueTip's title
    splitTitle:       '',       // A character used to split the title attribute into the clueTip title and divs
                                // within the clueTip body. more info below [6]
    showTitle:        true,     // show title bar of the clueTip, even if title attribute not set
    cluetipClass:     'default',// class added to outermost clueTip div in the form of 'cluetip-' + clueTipClass.
    hoverClass:       '',       // class applied to the invoking element onmouseover and removed onmouseout
    waitImage:        false,     // whether to show a "loading" img, which is set in jquery.cluetip.css
    cursor:           'help',
    sticky:           false,    // keep visible until manually closed
    mouseOutClose:    false,    // close when clueTip is moused out
    activation:       'hover',  // set to 'click' to force user to click to show clueTip
                                // set to 'focus' to show on focus of a form element and hide on blur
    clickThrough:     false,    // if true, and activation is not 'click', then clicking on link will take user to the link's href,
                                // even if href and tipAttribute are equal
    tracking:         false,    // if true, clueTip will track mouse movement (experimental)
    delayedClose:     0,        // close clueTip on a timed delay (experimental)
    closePosition:    'top',    // location of close text for sticky cluetips; can be 'top' or 'bottom' or 'title'
    closeText:        'Close',  // text (or HTML) to to be clicked to close sticky clueTips
    truncate:         0,        // number of characters to truncate clueTip's contents. if 0, no truncation occurs

    // effect and speed for opening clueTips
    fx: {             
                      open:       'show', // can be 'show' or 'slideDown' or 'fadeIn'
                      openSpeed:  'slow'
    },     

    // settings for when hoverIntent plugin is used             
    hoverIntent: {    
                      sensitivity:  3,
                      interval:     200,
                      timeout:      0
    },

    // function to run just before clueTip is shown.           
    onActivate:       function(e) {return true;},

    // function to run just after clueTip is shown.
    //onShow:           function(ct, c){},
    
    // whether to cache results of ajax request to avoid unnecessary hits to server    
    ajaxCache:        true,  

    // process data retrieved via xhr before it's displayed
    ajaxProcess:      function(data) {
                        data = data.replace(/<s(cript|tyle)(.|\s)*?\/s(cript|tyle)>/g, '').replace(/<(link|title)(.|\s)*?\/(link|title)>/g,'');
                        return data;
    },                

    // can pass in standard $.ajax() parameters, not including error, complete, success, and url
    ajaxSettings: {   
                      dataType: 'html'
    },
    debug: false
  };


/*
 * Global defaults for clueTips. Apply to all calls to the clueTip plugin.
 *
 * @example $.cluetip.setup({
 *   insertionType: 'prependTo',
 *   insertionElement: '#container'
 * });
 * 
 * @property
 * @name $.cluetip.setup
 * @type Map
 * @cat Plugins/tooltip
 * @option String insertionType: Default is 'appendTo'. Determines the method to be used for inserting the clueTip into the DOM. Permitted values are 'appendTo', 'prependTo', 'insertBefore', and 'insertAfter'
 * @option String insertionElement: Default is 'body'. Determines which element in the DOM the plugin will reference when inserting the clueTip.
 *
 */
   
  var insertionType = 'appendTo', insertionElement = 'body';
  $.cluetip = {};
  $.cluetip.setup = function(options) {
    if (options && options.insertionType && (options.insertionType).match(/appendTo|prependTo|insertBefore|insertAfter/)) {
      insertionType = options.insertionType;
    }
    if (options && options.insertionElement) {
      insertionElement = options.insertionElement;
    }
  };
  
})(jQuery);