WCAG Rule 90: Required properties and states should be defined

None

.containsAriaAttr

None

   function (ruleContext) {
      var passed = true;
      var attrNameArr = new Array();
      var designPatterns = OpenAjax.a11y.aria.designPatterns;
      var role = ruleContext.getAttribute("role");
      // - a role value of null indicates no role attribute is present in (FF,Opera, Safari, Chrome).
      // - '' value indicates the role is set to an empty string for all browsers except
      //      IE which also returns '' if no role attribute is present
      // neither of these values allow for unsupported state to be tested
      
      // Make sure the role value is consistent with IE as you don't want to push a null on the stack
      if (role==null)
         role='';
        
      //If the role is valid and there are required properties make sure none are missing
      if (role != '' && designPatterns[role] && designPatterns[role].reqProps != null) {
         for(var i=0; i< designPatterns[role].reqProps.length; i++) {
            if (!OpenAjax.a11y.xbrowser.hasAttribute(ruleContext, designPatterns[role].reqProps[i])) {
               attrNameArr.push(designPatterns[role].reqProps[i]);
            }
         }
      }
      var retMsg = new Array();
      retMsg.push (role);
      retMsg.push (attrNameArr.toString());
      var passed = attrNameArr.length == 0;
      return new ValidationResult(passed, [ruleContext], attrNameArr, '', retMsg);
   }