--- /dev/null
+// Copyright 2013 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+goog.require('axs.AuditRule');
+goog.require('axs.AuditRules');
+goog.require('axs.properties');
+goog.require('axs.utils');
+
+/**
+ * @type {axs.AuditRule.Spec}
+ */
+axs.AuditRule.specs.mainRoleOnInappropriateElement = {
+ name: 'mainRoleOnInappropriateElement',
+ heading: 'role=main should only appear on significant elements',
+ url: '',
+ severity: axs.constants.Severity.WARNING,
+ relevantElementMatcher: function(element) {
+ return axs.browserUtils.matchSelector(element, '[role~=main]');
+ },
+ test: function(element) {
+ if (axs.utils.isInlineElement(element))
+ return true;
+ var computedTextContent = axs.properties.getTextFromDescendantContent(element);
+ if (!computedTextContent || computedTextContent.length < 50)
+ return true;
+
+ return false;
+ },
+ code: 'AX_ARIA_04'
+};