/* http://keith-wood.name/svg.html
   SVG/jQuery DOM compatibility for jQuery v1.4.3.
   Written by Keith Wood (kbwood{at}iinet.com.au) April 2009.
   Change by Juergen Mangler June 2011.
   Dual licensed under the GPL (http://dev.jquery.com/browser/trunk/jquery/GPL-LICENSE.txt) and 
   MIT (http://dev.jquery.com/browser/trunk/jquery/MIT-LICENSE.txt) licenses. 
   Please attribute the author if you use it. */

(function($) { // Hide scope, no $ conflict

/* Support adding class names to SVG nodes. */
$.fn.addClass = function(origAddClass) {
  return function(classNames) {
    classNames = classNames || '';
    return this.each(function() {
      if (isSVGElem(this)) {
        var node = this;
        $.each(classNames.split(/\s+/), function(i, className) {
          var classes = (node.className ? node.className.baseVal : node.getAttribute('class'));
          if ($.inArray(className, classes.split(/\s+/)) == -1) {
            classes += (classes ? ' ' : '') + className;
            (node.className ? node.className.baseVal = classes :
              node.setAttribute('class',  classes));
          }
        });
      }
      else {
        origAddClass.apply($(this), [classNames]);
      }
    });
  };
}($.fn.addClass);

/* Support removing class names from SVG nodes. */
$.fn.removeClass = function(origRemoveClass) {
  return function(classNames) {
    classNames = classNames || '';
    return this.each(function() {
      if (isSVGElem(this)) {
        var node = this;
        $.each(classNames.split(/\s+/), function(i, className) {
          var classes = (node.className ? node.className.baseVal : node.getAttribute('class'));
          classes = $.grep(classes.split(/\s+/), function(n, i) { return n != className; }).
            join(' ');
          (node.className ? node.className.baseVal = classes :
            node.setAttribute('class', classes));
        });
      }
      else {
        origRemoveClass.apply($(this), [classNames]);
      }
    });
  };
}($.fn.removeClass);

/* Support toggling class names on SVG nodes. */
$.fn.toggleClass = function(origToggleClass) {
  return function(className, state) {
    return this.each(function() {
      if (isSVGElem(this)) {
        if (typeof state !== 'boolean') {
          state = !$(this).hasClass(className);
        }
        $(this)[(state ? 'add' : 'remove') + 'Class'](className);
      }
      else {
        origToggleClass.apply($(this), [className, state]);
      }
    });
  };
}($.fn.toggleClass);

/* Support checking class names on SVG nodes. */
$.fn.hasClass = function(origHasClass) {
  return function(className) {
    className = className || '';
    var found = false;
    this.each(function() {
      if (isSVGElem(this)) {
        var classes = (this.className ? this.className.baseVal :
          this.getAttribute('class')).split(/\s+/);
        found = ($.inArray(className, classes) > -1);
      }
      else {
        found = (origHasClass.apply($(this), [className]));
      }
      return !found;
    });
    return found;
  };
}($.fn.hasClass);

/* Support checking class names on SVG nodes. */
$X = function(xmlstr) {
  var test = $.parseXML(xmlstr).documentElement;
  return $(test);
};

/* Support attributes on SVG nodes. */
$.fn.attr = function(origAttr) {
  return function(name, value, type) {
    if (typeof name === 'string' && value === undefined) {
      var val = origAttr.apply(this, [name, value, type]);
      if (val && val.baseVal && val.baseVal.numberOfItems != null) { // Transform
        value = '';
        val = val.baseVal;
        for (var i = 0; i < val.numberOfItems; i++) {
          var item = val.getItem(i);
          switch (item.type) {
            case 1: value += ' matrix(' + item.matrix.a + ',' + item.matrix.b + ',' +
                  item.matrix.c + ',' + item.matrix.d + ',' +
                  item.matrix.e + ',' + item.matrix.f + ')';
                break;
            case 2: value += ' translate(' + item.matrix.e + ',' + item.matrix.f + ')'; break;
            case 3: value += ' scale(' + item.matrix.a + ',' + item.matrix.d + ')'; break;
            case 4: value += ' rotate(' + item.angle + ')'; break; // Doesn't handle new origin
            case 5: value += ' skewX(' + item.angle + ')'; break;
            case 6: value += ' skewY(' + item.angle + ')'; break;
          }
        }
        val = value.substring(1);
      }
      return (val && val.baseVal ? val.baseVal.valueAsString : val);
    }
    var options = name;
    if (typeof name === 'string') {
      options = {};
      options[name] = value;
    }
    return this.each(function() {
      if (isSVGElem(this)) {
        for (var n in options) {
          var val = ($.isFunction(options[n]) ? options[n]() : options[n]);
          (type ? this.style[n] = val : this.setAttribute(n, val));
        }
      }
      else {
        origAttr.apply($(this), [name, value, type]);
      }
    });
  };
}($.fn.attr);

/* Support removing attributes on SVG nodes. */
$.fn.removeAttr = function(origRemoveAttr) {
  return function(name) {
    return this.each(function() {
      if (isSVGElem(this)) {
        (this[name] && this[name].baseVal ? this[name].baseVal.value = '' :
          this.setAttribute(name, ''));
      }
      else {
        origRemoveAttr.apply($(this), [name]);
      }
    });
  };
}($.fn.removeAttr);

/* Determine if any nodes are SVG nodes. */
function anySVG(checkSet) {
  for (var i = 0; i < checkSet.length; i++) {
    if (checkSet[i].nodeType == 1 && checkSet[i].namespaceURI == 'http://www.w3.org/2000/svg') {
      return true;
    }
  }
  return false;
}

/* Update Sizzle selectors. */

$.expr.relative['+'] = function(origRelativeNext) {
  return function(checkSet, part, isXML) {
    origRelativeNext(checkSet, part, isXML || anySVG(checkSet));
  };
}($.expr.relative['+']);

$.expr.relative['>'] = function(origRelativeChild) {
  return function(checkSet, part, isXML) {
    origRelativeChild(checkSet, part, isXML || anySVG(checkSet));
  };
}($.expr.relative['>']);

$.expr.relative[''] = function(origRelativeDescendant) {
  return function(checkSet, part, isXML) {
    origRelativeDescendant(checkSet, part, isXML || anySVG(checkSet));
  };
}($.expr.relative['']);

$.expr.relative['~'] = function(origRelativeSiblings) {
  return function(checkSet, part, isXML) {
    origRelativeSiblings(checkSet, part, isXML || anySVG(checkSet));
  };
}($.expr.relative['~']);

$.expr.find.ID = function(origFindId) {
  return function(match, context, isXML) {
    return (isSVGElem(context) ?
      [context.ownerDocument.getElementById(match[1])] :
      origFindId(match, context, isXML));
  };
}($.expr.find.ID);

var div = document.createElement('div');
div.appendChild(document.createComment(''));
if (div.getElementsByTagName('*').length > 0) { // Make sure no comments are found
  $.expr.find.TAG = function(match, context) {
    var results = context.getElementsByTagName(match[1]);
    if (match[1] === '*') { // Filter out possible comments
      var tmp = [];
      for (var i = 0; results[i] || results.item(i); i++) {
        if ((results[i] || results.item(i)).nodeType === 1) {
          tmp.push(results[i] || results.item(i));
        }
      }
      results = tmp;
    }
    return results;
  };
}

$.expr.preFilter.CLASS = function(match, curLoop, inplace, result, not, isXML) {
  match = ' ' + match[1].replace(/\\/g, '') + ' ';
  if (isXML) {
    return match;
  }
  for (var i = 0, elem = {}; elem != null; i++) {
    elem = curLoop[i];
    if (!elem) {
      try {
        elem = curLoop.item(i);
      }
      catch (e) {
        // Ignore
      }
    }
    if (elem) {
      var className = (!isSVGElem(elem) ? elem.className :
        (elem.className ? elem.className.baseVal : '') || elem.getAttribute('class'));
      if (not ^ (className && (' ' + className + ' ').indexOf(match) > -1)) {
        if (!inplace)
          result.push(elem);
      }
      else if (inplace) {
        curLoop[i] = false;
      }
    }
  }
  return false;
};

$.expr.filter.CLASS = function(elem, match) {
  var className = (!isSVGElem(elem) ? elem.className :
    (elem.className ? elem.className.baseVal : elem.getAttribute('class')));
  return (' ' + className + ' ').indexOf(match) > -1;
};

$.expr.filter.ATTR = function(origFilterAttr) {
  return function(elem, match) {
    var handler = null;
    if (isSVGElem(elem)) {
      handler = match[1];
      $.expr.attrHandle[handler] = function(elem){
        var attr = elem.getAttribute(handler);
        return attr && attr.baseVal || attr;
      };
    }
    var filter = origFilterAttr(elem, match);
    if (handler) {
      $.expr.attrHandle[handler] = null;
    }
    return filter;
  };
}($.expr.filter.ATTR);

/* Does this node belong to SVG? */
/* Change: use namespace directly, to avoid dependency on jquery.svg.js */
function isSVGElem(node) {
  return (node.nodeType == 1 && node.namespaceURI == 'http://www.w3.org/2000/svg');
}

})(jQuery);