DevTools: Add autocomplete for ARIA

third_party/WebKit/Source/devtools/scripts/aria_attributes.py

+#!/usr/bin/env python
+#
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Scrapes ARIA attributes from online resources.
+To be run by hand if and when these change.
+"""
+
+import json
+import urllib2
+import xml.dom.minidom
+
+import sys
+
+
+def add_array_property(obj, name, info_node):
+    value = ''
+    if info_node.hasAttribute('rdf:resource'):
+        value = info_node.getAttribute('rdf:resource').split('#')[-1]
+    else:
+        text_node = info_node.firstChild
+        value = text_node.data.strip()
+    if value == '':
+        return
+    if name in obj:
+        obj[name].append(value)
+    else:
+        obj[name] = [value]
+
+
+def fetch_roles():
+    response = urllib2.urlopen("http://www.w3.org/WAI/ARIA/schemata/aria-1.rdf", timeout=5)
+    content = response.read()
+    tree = xml.dom.minidom.parseString(content)
+    roles = {}
+    for role_node in tree.getElementsByTagName('owl:Class'):
+        role = {}
+        for info_node in role_node.childNodes:
+            if info_node.nodeType != xml.dom.minidom.Node.ELEMENT_NODE:
+                continue
+            if info_node.tagName == 'rdfs:subClassOf':
+                add_array_property(role, 'superclasses', info_node)
+            elif info_node.tagName == 'role:supportedState':
+                add_array_property(role, 'supportedAttributes', info_node)
+            elif info_node.tagName == 'role:requiredState':
+                add_array_property(role, 'requiredAttributes', info_node)
+            elif info_node.tagName == 'role:scope':
+                add_array_property(role, 'scope', info_node)
+            elif info_node.tagName == 'role:mustContain':
+                add_array_property(role, 'mustContain', info_node)
+            elif info_node.tagName == 'role:nameFrom':
+                add_array_property(role, 'nameFrom', info_node)
+        roles[role_node.getAttribute('rdf:ID')] = role
+    return roles
+
+
+def fetch_attributes():
+    xs = 'http://www.w3.org/2001/XMLSchema'
+    response = urllib2.urlopen("https://www.w3.org/MarkUp/SCHEMA/aria-attributes-1.xsd", timeout=5)
+    content = response.read()
+    tree = xml.dom.minidom.parseString(content)
+    attributes = {}
+    for attribute_node in tree.getElementsByTagNameNS(xs, 'attribute'):
+        attribute = {}
+        if attribute_node.hasAttribute('type'):
+            attribute['type'] = attribute_node.getAttribute('type').split(':')[-1]
+        else:
+            type_node = attribute_node.getElementsByTagNameNS(xs, 'simpleType')[0]
+            restriction_node = type_node.getElementsByTagNameNS(xs, 'restriction')[0]
+            attribute['type'] = restriction_node.getAttribute('base').split(':')[-1]
+            attribute['enum'] = []
+            for enum in restriction_node.getElementsByTagNameNS(xs, 'enumeration'):
+                attribute['enum'].append(enum.getAttribute('value'))
+        if attribute_node.hasAttribute('default'):
+            attribute['default'] = attribute_node.getAttribute('default')
+        attributes[attribute_node.getAttribute('name')] = attribute
+    return attributes
+
+
+def main(_):
+    aria = {}
+    aria['roles'] = fetch_roles()
+    aria['attributes'] = fetch_attributes()
+
+    print json.dumps(aria, sort_keys=True, indent=4)
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))