/* * jQuery Tooltip plugin 1.3
  *
  * http://bassistance.de/jquery-plugins/jquery-plugin-tooltip/
  * http://docs.jquery.com/Plugins/Tooltip
  *
  * Copyright (c) 2006 - 2008 JГ¶rn Zaefferer
  *
  * $Id: jquery.tooltip.js 5741 2008-06-21 15:22:16Z joern.zaefferer $
  *  
  * Dual licensed under the MIT and GPL licenses:
  *   http://www.opensource.org/licenses/mit-license.php
  *   http://www.gnu.org/licenses/gpl.html
  */
   
;(function($) {
     
       // the tooltip element
    var helper = {},
       // the current tooltipped element
       current,
       // the title of the current element, used for restoring
       title,
       // timeout id for delayed tooltips
       tID,
       // IE 5.5 or 6
       IE = $.browser.msie && /MSIE\s(5\.5|6\.)/.test(navigator.userAgent),
       // flag for mouse tracking
       track = false;
     
    $.tooltip = {
       blocked: false,
       defaults: {
          delay: 200,
          fade: false,
          showURL: true,
          extraClass: "",
          top: 15,
          left: 15,
          id: "tooltip"
       },
       block: function() {
          $.tooltip.blocked = !$.tooltip.blocked;
       }
    };
     
    $.fn.extend({
       tooltip: function(settings) {
          settings = $.extend({}, $.tooltip.defaults, settings);
          createHelper(settings);
          return this.each(function() {
                $.data(this, "tooltip", settings);
                this.tOpacity = helper.parent.css("opacity");
                // copy tooltip into its own expando and remove the title
                this.tooltipText = this.title;
                $(this).removeAttr("title");
                // also remove alt attribute to prevent default tooltip in IE
                this.alt = "";
             })
             .mouseover(save)
             .mouseout(hide)
             .click(hide);
       },
       fixPNG: IE ? function() {
          return this.each(function () {
             var image = $(this).css('backgroundImage');
             if (image.match(/^url\(["']?(.*\.png)["']?\)$/i)) {
                image = RegExp.$1;
                $(this).css({
                   'backgroundImage': 'none',
                   'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop, src='" + image + "')"
                }).each(function () {
                   var position = $(this).css('position');
                   if (position != 'absolute' && position != 'relative')
                      $(this).css('position', 'relative');
                });
             }
          });
       } : function() { return this; },
       unfixPNG: IE ? function() {
          return this.each(function () {
             $(this).css({'filter': '', backgroundImage: ''});
          });
       } : function() { return this; },
       hideWhenEmpty: function() {
          return this.each(function() {
             $(this)[ $(this).html() ? "show" : "hide" ]();
          });
       },
       url: function() {
          return this.attr('href') || this.attr('src');
       }
    });
     
    function createHelper(settings) {
       // there can be only one tooltip helper
       if( helper.parent )
          return;
       // create the helper, h3 for title, div for url
       helper.parent = $('<div id="' + settings.id + '"><h3></h3><div class="body"></div><div class="url"></div></div>')
          // add to document
          .appendTo(document.body)
          // hide it at first
          .hide();
           
       // apply bgiframe if available
       if ( $.fn.bgiframe )
          helper.parent.bgiframe();
        
       // save references to title and url elements
       helper.title = $('h3', helper.parent);
       helper.body = $('div.body', helper.parent);
       helper.url = $('div.url', helper.parent);
    }
     
    function settings(element) {
       return $.data(element, "tooltip");
    }
     
    // main event handler to start showing tooltips
    function handle(event) {
       // show helper, either with timeout or on instant
       if( settings(this).delay )
          tID = setTimeout(show, settings(this).delay);
       else
          show();
        
       // if selected, update the helper position when the mouse moves
       track = !!settings(this).track;
       $(document.body).bind('mousemove', update);
           
       // update at least once
       update(event);
    }
     
    // save elements title before the tooltip is displayed
    function save() {
       // if this is the current source, or it has no title (occurs with click event), stop
       if ( $.tooltip.blocked || this == current || (!this.tooltipText && !settings(this).bodyHandler) )
          return;

       // save current
       current = this;
       title = this.tooltipText;
        
       if ( settings(this).bodyHandler ) {
          helper.title.hide();
          var bodyContent = settings(this).bodyHandler.call(this);
          if (bodyContent.nodeType || bodyContent.jquery) {
             helper.body.empty().append(bodyContent)
          } else {
             helper.body.html( bodyContent );
          }
          helper.body.show();
       } else if ( settings(this).showBody ) {
          var parts = title.split(settings(this).showBody);
          helper.title.html(parts.shift()).show();
          helper.body.empty();
          for(var i = 0, part; (part = parts[i]); i++) {
             if(i > 0)
                helper.body.append("<br/>");
             helper.body.append(part);
          }
          helper.body.hideWhenEmpty();
       } else {
          helper.title.html(title).show();
          helper.body.hide();
       }
        
       // if element has href or src, add and show it, otherwise hide it
       if( settings(this).showURL && $(this).url() )
          helper.url.html( $(this).url().replace('http://', '') ).show();
       else  
          helper.url.hide();
        
       // add an optional class for this tip
       helper.parent.addClass(settings(this).extraClass);

       // fix PNG background for IE
       if (settings(this).fixPNG )
          helper.parent.fixPNG();
           
       handle.apply(this, arguments);
    }
     
    // delete timeout and show helper
    function show() {
       tID = null;
       if ((!IE || !$.fn.bgiframe) && settings(current).fade) {
          if (helper.parent.is(":animated"))
             helper.parent.stop().show().fadeTo(100, current.tOpacity);
          else
             helper.parent.is(':visible') ? helper.parent.fadeTo(100, current.tOpacity) : helper.parent.fadeIn(100);
       } else {
          helper.parent.show();
       }
       update();
    }
     
    /**
     * callback for mousemove
     * updates the helper position
     * removes itself when no current element
     */
    function update(event)   {
       if($.tooltip.blocked)
          return;
        
       if (event && event.target.tagName == "OPTION") {
          return;
       }
        
       // stop updating when tracking is disabled and the tooltip is visible
       if ( !track && helper.parent.is(":visible")) {
          $(document.body).unbind('mousemove', update)
       }
        
       // if no current element is available, remove this listener
       if( current == null ) {
          $(document.body).unbind('mousemove', update);
          return;    
       }
        
       // remove position helper classes
       helper.parent.removeClass("viewport-right").removeClass("viewport-bottom");
        
       var left = helper.parent[0].offsetLeft;
       var top = helper.parent[0].offsetTop;
       if (event) {
          // position the helper 15 pixel to bottom right, starting from mouse position
          left = event.pageX + settings(current).left;
          top = event.pageY + settings(current).top;
          var right='auto';
          if (settings(current).positionLeft) {
             right = $(window).width() - left;
             left = 'auto';
          }
          helper.parent.css({
             left: left,
             right: right,
             top: top
          });
       }
        
       var v = viewport(),
          h = helper.parent[0];
       // check horizontal position
       if (v.x + v.cx < h.offsetLeft + h.offsetWidth) {
          left -= h.offsetWidth + 20 + settings(current).left;
          helper.parent.css({left: left + 'px'}).addClass("viewport-right");
       }
       // check vertical position
       if (v.y + v.cy < h.offsetTop + h.offsetHeight) {
          top -= h.offsetHeight + 20 + settings(current).top;
          helper.parent.css({top: top + 'px'}).addClass("viewport-bottom");
       }
    }
     
    function viewport() {
       return {
          x: $(window).scrollLeft(),
          y: $(window).scrollTop(),
          cx: $(window).width(),
          cy: $(window).height()
       };
    }
     
    // hide helper and restore added classes and the title
    function hide(event) {
       if($.tooltip.blocked)
          return;
       // clear timeout if possible
       if(tID)
          clearTimeout(tID);
       // no more current element
       current = null;
        
       var tsettings = settings(this);
       function complete() {
          helper.parent.removeClass( tsettings.extraClass ).hide().css("opacity", "");
       }
       if ((!IE || !$.fn.bgiframe) && tsettings.fade) {
          if (helper.parent.is(':animated'))
             helper.parent.stop().fadeTo(100, 0, complete);
          else
             helper.parent.stop().fadeOut(100, complete);
       } else
          complete();
        
       if( settings(this).fixPNG )
          helper.parent.unfixPNG();
    }
     
})(jQuery);