From 1bf5409ef45872e84f62d2199b918ab233461aed Mon Sep 17 00:00:00 2001
From: Trevor Elliott <trevor@galois.com>
Date: Mon, 24 Jun 2013 13:40:42 -0700
Subject: Start work on implmenting the W3C accessibilty guidelines

  See http://www.w3.org/TR/WCAG10/#Guidelines
---
 guidelines/accessibility/conformance-A.json |  7 +++++++
 guidelines/accessibility/guideline-1.js     | 30 +++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 guidelines/accessibility/conformance-A.json
 create mode 100644 guidelines/accessibility/guideline-1.js

diff --git a/guidelines/accessibility/conformance-A.json b/guidelines/accessibility/conformance-A.json
new file mode 100644
index 0000000..5aa5bf3
--- /dev/null
+++ b/guidelines/accessibility/conformance-A.json
@@ -0,0 +1,7 @@
+{ "name":        "W3C Accessibility Guidelines (Conformance A)"
+, "description": "See: www.w3.org/TR/WCAG10/"
+, "license":     "BSD3"
+, "rules":
+  [ "guideline-1.js"
+  ]
+}
diff --git a/guidelines/accessibility/guideline-1.js b/guidelines/accessibility/guideline-1.js
new file mode 100644
index 0000000..35b3d89
--- /dev/null
+++ b/guidelines/accessibility/guideline-1.js
@@ -0,0 +1,30 @@
+/**
+ * Provide equivalent alternatives to auditory and visual content
+ */
+
+exports.name        = "Equivalent Alternatives";
+exports.description = "";
+
+exports.rule        = function(report) {
+
+  var hasAlt = function(type) {
+    return function(ix) {
+      if(_.isEmpty($(this).attr('alt'))) {
+        report.error('No alt text specified for ' + type + ' element', this);
+      }
+    };
+  };
+
+  // We treat anchors with images as a child as things that should contain
+  // alternatives.
+  $5('a').find('img').each(hasAlt('img'));
+
+  // All input tags must have an alt attribute.
+  $5('input').each(hasAlt('input'));
+
+  // All applet tags must have an alt attribute.
+  $5('applet').each(hasAlt('applet'));
+
+  // All object tags must have an alt attribute.
+  $5('object').each(hasAlt('applet'));
+};
-- 
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