[DevTools] Bring ARIA config up to date with ARIA 1.1

third_party/WebKit/Source/devtools/front_end/accessibility/ARIAConfig.js

Index: third_party/WebKit/Source/devtools/front_end/accessibility/ARIAConfig.js
diff --git a/third_party/WebKit/Source/devtools/front_end/accessibility/ARIAConfig.js b/third_party/WebKit/Source/devtools/front_end/accessibility/ARIAConfig.js
index 217f6e74df3b6fe9a87dbb442ee281500e6caf35..ae1fce31fb299aabd31bddda45489a12e20e5cb8 100644
--- a/third_party/WebKit/Source/devtools/front_end/accessibility/ARIAConfig.js
+++ b/third_party/WebKit/Source/devtools/front_end/accessibility/ARIAConfig.js
@@ -5,31 +5,46 @@ Accessibility.ARIAMetadata._config = {
     'aria-autocomplete': {'default': 'none', 'enum': ['inline', 'list', 'both', 'none'], 'type': 'token'},
     'aria-busy': {'default': 'false', 'type': 'boolean'},
     'aria-checked': {'default': 'undefined', 'enum': ['true', 'false', 'mixed', 'undefined'], 'type': 'token'},
+    'aria-colcount': {'type': 'integer'},
+    'aria-colindex': {'type': 'integer'},
+    'aria-colspan': {'type': 'integer'},
     'aria-controls': {'type': 'IDREF_list'},
+    'aria-current':
+        {'default': 'false', 'enum': ['page', 'step', 'location', 'date', 'time', 'true', 'false'], 'type': 'token'},
     'aria-describedby': {'type': 'IDREF_list'},
+    'aria-details': {'type': 'IDREF'},
     'aria-disabled': {'default': 'false', 'type': 'boolean'},
     'aria-dropeffect':
         {'default': 'none', 'enum': ['copy', 'move', 'link', 'execute', 'popup', 'none'], 'type': 'token_list'},
+    'aria-errormessage': {'type': 'IDREF'},
     'aria-expanded': {'default': 'undefined', 'enum': ['true', 'false', 'undefined'], 'type': 'token'},
     'aria-flowto': {'type': 'IDREF_list'},
     'aria-grabbed': {'default': 'undefined', 'enum': ['true', 'false', 'undefined'], 'type': 'token'},
-    'aria-haspopup': {'default': 'false', 'type': 'boolean'},
-    'aria-hidden': {'default': 'false', 'type': 'boolean'},
+    'aria-haspopup':
+        {'default': 'false', 'enum': ['false', 'true', 'menu', 'listbox', 'tree', 'grid', 'dialog'], 'type': 'token'},
+    'aria-hidden': {'default': 'undefined', 'enum': ['true', 'false', 'undefined'], 'type': 'token'},

[aleventhal, 2017/06/29 20:18:13]

Is there special logic somewhere so that 'undefined' is not treated as a
possible literal value, but rather means the attribute is not present?

I'm actually not sure whether the 'undefined' literal string should be treated
as undefined or not, and sent an email to public-aria for clarification.

[aboxhall, 2017/06/29 23:58:27]

Hm, the spec says:

The "undefined" value, when allowed on a state or property, is an explicit
indication that the state or property is not set. The value is used on states
and properties that support tokens, and the "undefined" value is a string that
is one of the allowed tokens. It is also used on some states and properties that
accept true/false values, when "undefined" has a different meaning than "false".

https://www.w3.org/TR/wai-aria-1.1/#propcharacteristic_value

but also

States and properties specifically required for the role and subclass roles.
Content authors must provide a non-empty value for required states and
properties. Content authors must not use the value "undefined" for required
states and properties.

https://www.w3.org/TR/wai-aria-1.1/#requiredState

So I conclude that you can explicitly set "undefined" *unless* it the property
is required for the role.

     'aria-invalid': {'default': 'false', 'enum': ['grammar', 'false', 'spelling', 'true'], 'type': 'token'},
+    'aria-keyshortcuts': {'type': 'string'},
     'aria-label': {'type': 'string'},
     'aria-labelledby': {'type': 'IDREF_list'},
     'aria-level': {'type': 'integer'},
     'aria-live': {'default': 'off', 'enum': ['off', 'polite', 'assertive'], 'type': 'token'},
+    'aria-modal': {'default': 'false', 'type': 'boolean'},
     'aria-multiline': {'default': 'false', 'type': 'boolean'},
     'aria-multiselectable': {'default': 'false', 'type': 'boolean'},
-    'aria-orientation': {'default': 'vertical', 'enum': ['horizontal', 'vertical'], 'type': 'token'},
+    'aria-orientation': {'default': 'undefined', 'enum': ['horizontal', 'undefined', 'vertical'], 'type': 'token'},
     'aria-owns': {'type': 'IDREF_list'},
+    'aria-placeholder': {'type': 'string'},
     'aria-posinset': {'type': 'integer'},
     'aria-pressed': {'default': 'undefined', 'enum': ['true', 'false', 'mixed', 'undefined'], 'type': 'token'},
     'aria-readonly': {'default': 'false', 'type': 'boolean'},
     'aria-relevant':
         {'default': 'additions text', 'enum': ['additions', 'removals', 'text', 'all'], 'type': 'token_list'},
     'aria-required': {'default': 'false', 'type': 'boolean'},
+    'aria-roledescription': {'type': 'string'},
+    'aria-rowcount': {'type': 'integer'},
+    'aria-rowindex': {'type': 'integer'},
+    'aria-rowspan': {'type': 'integer'},
     'aria-selected': {'default': 'undefined', 'enum': ['true', 'false', 'undefined'], 'type': 'token'},
     'aria-setsize': {'type': 'integer'},
     'aria-sort': {'default': 'none', 'enum': ['ascending', 'descending', 'none', 'other'], 'type': 'token'},
@@ -40,29 +55,56 @@ Accessibility.ARIAMetadata._config = {
     'tabindex': {'type': 'integer'}
   },
   'roles': {
-    'alert': {'nameFrom': ['author'], 'superclasses': ['region']},
-    'alertdialog': {'nameFrom': ['author'], 'superclasses': ['alert', 'dialog']},
-    'application': {'nameFrom': ['author'], 'superclasses': ['landmark']},
-    'article': {'nameFrom': ['author'], 'superclasses': ['document', 'region']},
+    'alert': {
+      'nameFrom': ['author'],
+      'superclasses': ['section'],
+      'implicitValues': {'aria-live': 'assertive ', 'aria-atomic': 'true'}

[aleventhal, 2017/06/29 20:18:13]

There is a space in 'assertive '

[aboxhall, 2017/06/29 23:58:27]

Done.

+    },
+    'alertdialog': {'nameFrom': ['author'], 'superclasses': ['alert', 'dialog'], 'nameRequired': true},
+    'application': {'nameFrom': ['author'], 'superclasses': ['structure'], 'nameRequired': true},
+    'article': {
+      'nameFrom': ['author'],
+      'superclasses': ['document'],
+      'supportedAttributes': ['aria-posinset', 'aria-setsize']
+    },
     'banner': {'nameFrom': ['author'], 'superclasses': ['landmark']},
     'button': {
       'nameFrom': ['contents', 'author'],
       'superclasses': ['command'],
-      'supportedAttributes': ['aria-expanded', 'aria-pressed']
+      'supportedAttributes': ['aria-expanded', 'aria-pressed'],
+      'nameRequired': true,
+      'childrenPresentational': true
+    },
+    'cell': {
+      'namefrom': ['contents', 'author'],
+      'scope': 'row',
+      'superclasses': ['section'],
+      'supportedAttributes': ['aria-colindex', 'aria-colspan', 'aria-rowindex', 'aria-rowspan']
+    },
+    'checkbox': {
+      'nameFrom': ['contents', 'author'],
+      'requiredAttributes': ['aria-checked'],
+      'superclasses': ['input'],
+      'supportedAttributes': ['aria-readonly'],
+      'nameRequired': true,
+      'childrenPresentational': true,
+      'implicitValues': {'aria-checked': false}
     },
-    'checkbox': {'nameFrom': ['contents', 'author'], 'requiredAttributes': ['aria-checked'], 'superclasses': ['input']},
     'columnheader': {
       'nameFrom': ['contents', 'author'],
       'scope': ['row'],
       'superclasses': ['gridcell', 'sectionhead', 'widget'],
-      'supportedAttributes': ['aria-sort']
+      'supportedAttributes': ['aria-sort'],
+      'nameRequired': true
     },
     'combobox': {

[aleventhal, 2017/06/29 20:18:13]

Note: according to @nektarios, we have implemented this so that the textfield
itself can be role="combobox", rather than a combobox containing a textbox. In
addition, Google implementations in google.com assume this. I'm going to be
looking at this.

[aboxhall, 2017/06/29 23:58:27]

Added TODO to follow up.

-      'mustContain': ['listbox', 'textbox'],
+      'mustContain': ['textbox'],
       'nameFrom': ['author'],
-      'requiredAttributes': ['aria-expanded'],
+      'requiredAttributes': ['aria-controls', 'aria-expanded'],
       'superclasses': ['select'],
-      'supportedAttributes': ['aria-autocomplete', 'aria-required']
+      'supportedAttributes': ['aria-autocomplete', 'aria-readonly', 'aria-required'],
+      'nameRequired': true,
+      'implicitValues': {'aria-expanded': 'false', 'aria-haspopup': 'listbox'}
     },
     'command': {'abstract': true, 'nameFrom': ['author'], 'superclasses': ['widget']},
     'complementary': {'nameFrom': ['author'], 'superclasses': ['landmark']},
@@ -74,74 +116,144 @@ Accessibility.ARIAMetadata._config = {
     },
     'contentinfo': {'nameFrom': ['author'], 'superclasses': ['landmark']},
     'definition': {'nameFrom': ['author'], 'superclasses': ['section']},
-    'dialog': {'nameFrom': ['author'], 'superclasses': ['window']},
-    'directory': {'nameFrom': ['contents', 'author'], 'superclasses': ['list']},
-    'document': {'nameFrom': ['author'], 'superclasses': ['structure'], 'supportedAttributes': ['aria-expanded']},
+    'dialog': {'nameFrom': ['author'], 'superclasses': ['window'], 'nameRequired': true},
+    'directory': {'nameFrom': ['author'], 'superclasses': ['list']},
+    'document': {
+      'nameFrom': ['author'],
+      'superclasses': ['structure'],
+      'supportedAttributes': ['aria-expanded'],
+      'nameRequired': true
+    },
+    'feed': {'nameFrom': ['author'], 'superclasses': ['list'], 'mustContain': ['article'], 'nameRequired': false},
+    'figure': {'namefrom': ['author'], 'superclasses': ['section'], 'nameRequired': false},
     'form': {'nameFrom': ['author'], 'superclasses': ['landmark']},
     'grid': {
-      'mustContain': ['row', 'rowgroup', 'row'],
       'nameFrom': ['author'],
-      'superclasses': ['composite', 'region'],
-      'supportedAttributes': ['aria-level', 'aria-multiselectable', 'aria-readonly']
+      'superclasses': ['composite', 'table'],
+      'mustContain': ['row'],
+      'supportedAttributes': ['aria-level', 'aria-multiselectable', 'aria-readonly'],
+      'nameRequired': true
     },
     'gridcell': {
       'nameFrom': ['contents', 'author'],
       'scope': ['row'],
-      'superclasses': ['section', 'widget'],
-      'supportedAttributes': ['aria-readonly', 'aria-required', 'aria-selected']
+      'superclasses': ['cell', 'widget'],
+      'supportedAttributes': ['aria-readonly', 'aria-required', 'aria-selected'],
+      'nameRequired': true
     },
     'group': {'nameFrom': ['author'], 'superclasses': ['section'], 'supportedAttributes': ['aria-activedescendant']},
-    'heading': {'superclasses': ['sectionhead'], 'supportedAttributes': ['aria-level']},
-    'img': {'nameFrom': ['author'], 'superclasses': ['section']},
+    'heading': {
+      'namefrom': ['contents', 'author'],
+      'superclasses': ['sectionhead'],
+      'supportedAttributes': ['aria-level'],
+      'nameRequired': true,
+      'implicitValues': {'aria-level': '2'}
+    },
+    'img': {'nameFrom': ['author'], 'superclasses': ['section'], 'nameRequired': true, 'childrenPresentational': true},
     'input': {'abstract': true, 'nameFrom': ['author'], 'superclasses': ['widget']},
-    'landmark': {'abstract': true, 'nameFrom': ['contents', 'author'], 'superclasses': ['region']},
-    'link': {'nameFrom': ['contents', 'author'], 'superclasses': ['command'], 'supportedAttributes': ['aria-expanded']},
-    'list': {'mustContain': ['group', 'listitem', 'listitem'], 'nameFrom': ['author'], 'superclasses': ['region']},
+    'landmark':
+        {'abstract': true, 'nameFrom': ['contents', 'author'], 'superclasses': ['section'], 'nameRequired': false},
+    'link': {
+      'nameFrom': ['contents', 'author'],
+      'superclasses': ['command'],
+      'supportedAttributes': ['aria-expanded'],
+      'nameRequired': true
+    },
+    'list': {
+      'mustContain': ['listitem'],
+      'nameFrom': ['author'],
+      'superclasses': ['section'],
+      'nameRequired': true,
+      'implicitValues': {'aria-orientation': 'vertical'}
+    },
     'listbox': {
-      'mustContain': ['option'],
       'nameFrom': ['author'],
-      'superclasses': ['list', 'select'],
-      'supportedAttributes': ['aria-multiselectable', 'aria-required']
+      'superclasses': ['select'],
+      'mustContain': ['option'],
+      'supportedAttributes': ['aria-multiselectable', 'aria-readonly', 'aria-required'],
+      'nameRequired': true,
+      'implicitValues': {'aria-orientation': 'vertical'},
     },
     'listitem': {
-      'nameFrom': ['contents', 'author'],
-      'scope': ['list'],
+      'nameFrom': ['author'],
       'superclasses': ['section'],
+      'scope': ['group', 'list'],
       'supportedAttributes': ['aria-level', 'aria-posinset', 'aria-setsize']
     },
-    'log': {'nameFrom': ['author'], 'superclasses': ['region']},
+    'log': {
+      'nameFrom': ['author'],
+      'superclasses': ['region'],
+      'nameRequired': true,
+      'implicitValues': {'aria-live': 'polite'}
+    },
     'main': {'nameFrom': ['author'], 'superclasses': ['landmark']},
-    'marquee': {'superclasses': ['section']},
-    'math': {'nameFrom': ['author'], 'superclasses': ['section']},
+    'marquee': {'nameFrom': ['author'], 'superclasses': ['section'], 'nameRequired': true},
+    'math': {'nameFrom': ['author'], 'superclasses': ['section'], 'nameRequired': true},
     'menu': {
       'mustContain': ['group', 'menuitemradio', 'menuitem', 'menuitemcheckbox', 'menuitemradio'],
       'nameFrom': ['author'],
-      'superclasses': ['list', 'select']
+      'superclasses': ['select'],
+      'implicitValues': {'aria-orientation': 'vertical'}
     },
-    'menubar': {'nameFrom': ['author'], 'superclasses': ['menu']},
-    'menuitem': {'nameFrom': ['contents', 'author'], 'scope': ['menu', 'menubar'], 'superclasses': ['command']},
-    'menuitemcheckbox':
-        {'nameFrom': ['contents', 'author'], 'scope': ['menu', 'menubar'], 'superclasses': ['checkbox', 'menuitem']},
-    'menuitemradio': {
+    'menubar': {
+      'nameFrom': ['author'],
+      'superclasses': ['menu'],
+      'mustContain': ['group', 'menuitem', 'menuitemradio', 'menuitemcheckbox'],
+      'implicitValues': {'aria-orientation': 'horizontal'}
+    },
+    'menuitem': {
+      'nameFrom': ['contents', 'author'],
+      'scope': ['group', 'menu', 'menubar'],
+      'superclasses': ['command'],
+      'nameRequired': true
+    },
+    'menuitemcheckbox': {
       'nameFrom': ['contents', 'author'],
       'scope': ['menu', 'menubar'],
-      'superclasses': ['menuitemcheckbox', 'radio']
+      'superclasses': ['checkbox', 'menuitem'],
+      'nameRequired': true,
+      'childrenPresentational': true,
+      'implicitValues': {'aria-checked': false}
+    },
+    'menuitemradio': {
+      'nameFrom': ['contents', 'author'],
+      'scope': ['menu', 'menubar', 'group'],
+      'superclasses': ['menuitemcheckbox', 'radio'],
+      'nameRequired': true,
+      'childrenPresentational': true,
+      'implicitValues': {'aria-checked': false}
     },
     'navigation': {'nameFrom': ['author'], 'superclasses': ['landmark']},
+    'none': {'superclasses': ['structure']},
     'note': {'nameFrom': ['author'], 'superclasses': ['section']},
     'option': {
       'nameFrom': ['contents', 'author'],
+      'scope': ['listbox'],
       'superclasses': ['input'],
-      'supportedAttributes': ['aria-checked', 'aria-posinset', 'aria-selected', 'aria-setsize']
+      'requiredAttributes': ['aria-selected'],
+      'supportedAttributes': ['aria-checked', 'aria-posinset', 'aria-setsize'],
+      'nameRequired': true,
+      'childrenPresentational': true,
+      'implicitValues': {'aria-selected': 'false'}
     },
     'presentation': {'superclasses': ['structure']},
-    'progressbar': {'nameFrom': ['author'], 'superclasses': ['range']},
-    'radio': {'nameFrom': ['contents', 'author'], 'superclasses': ['checkbox', 'option']},
+    'progressbar':
+        {'nameFrom': ['author'], 'superclasses': ['range'], 'nameRequired': true, 'childrenPresentational': true},
+    'radio': {
+      'nameFrom': ['contents', 'author'],
+      'superclasses': ['input'],
+      'requiredAttributes': ['aria-checked'],
+      'supportedAttributes': ['aria-posinset', 'aria-setsize'],
+      'nameRequired': true,
+      'childrenPresentational': true,
+      'implicitValues': {'aria-checked': 'false'}
+    },
     'radiogroup': {
-      'mustContain': ['radio'],
       'nameFrom': ['author'],
       'superclasses': ['select'],
-      'supportedAttributes': ['aria-required']
+      'mustContain': ['radio'],
+      'supportedAttributes': ['aria-readonly', 'aria-required'],
+      'nameRequired': true
     },
     'range': {
       'abstract': true,
@@ -149,105 +261,151 @@ Accessibility.ARIAMetadata._config = {
       'superclasses': ['widget'],
       'supportedAttributes': ['aria-valuemax', 'aria-valuemin', 'aria-valuenow', 'aria-valuetext']
     },
-    'region': {'nameFrom': ['author'], 'superclasses': ['section']},
+    'region': {'nameFrom': ['author'], 'superclasses': ['landmark'], 'nameRequired': true},
     'roletype': {
       'abstract': true,
       'supportedAttributes': [
-        'aria-atomic', 'aria-busy', 'aria-controls', 'aria-describedby', 'aria-disabled', 'aria-dropeffect',
-        'aria-flowto', 'aria-grabbed', 'aria-haspopup', 'aria-hidden', 'aria-invalid', 'aria-label', 'aria-labelledby',
-        'aria-live', 'aria-owns', 'aria-relevant'
+        'aria-atomic',   'aria-busy',       'aria-controls',       'aria-current', 'aria-describedby', 'aria-details',
+        'aria-disabled', 'aria-dropeffect', 'aria-errormessage',   'aria-flowto',  'aria-grabbed',     'aria-haspopup',
+        'aria-hidden',   'aria-invalid',    'aria-keyshortcuts',   'aria-label',   'aria-labelledby',  'aria-live',
+        'aria-owns',     'aria-relevant',   'aria-roledescription'
       ]
     },
     'row': {
-      'mustContain': ['columnheader', 'gridcell', 'rowheader'],
       'nameFrom': ['contents', 'author'],
-      'scope': ['grid', 'rowgroup', 'treegrid'],
       'superclasses': ['group', 'widget'],
-      'supportedAttributes': ['aria-level', 'aria-selected']
+      'mustContain': ['cell', 'columnheader', 'gridcell', 'rowheader'],
+      'scope': ['grid', 'rowgroup', 'table', 'treegrid'],
+      'supportedAttributes': ['aria-colindex', 'aria-level', 'aria-rowindex', 'aria-selected']
+    },
+    'rowgroup': {
+      'nameFrom': ['contents', 'author'],
+      'superclasses': ['structure'],
+      'mustContain': ['row'],
+      'scope': ['grid', 'table', 'treegrid'],
     },
-    'rowgroup':
-        {'mustContain': ['row'], 'nameFrom': ['contents', 'author'], 'scope': ['grid'], 'superclasses': ['group']},
     'rowheader': {
       'nameFrom': ['contents', 'author'],
       'scope': ['row'],
-      'superclasses': ['gridcell', 'sectionhead', 'widget'],
-      'supportedAttributes': ['aria-sort']
+      'superclasses': ['cell', 'gridcell', 'sectionhead'],
+      'supportedAttributes': ['aria-sort'],
+      'nameRequired': true
     },
     'scrollbar': {
       'nameFrom': ['author'],
       'requiredAttributes': ['aria-controls', 'aria-orientation', 'aria-valuemax', 'aria-valuemin', 'aria-valuenow'],
-      'superclasses': ['input', 'range']
+      'superclasses': ['range'],
+      'nameRequired': false,
+      'childrenPresentational': true,
+      'implicitValues': {'aria-orientation': 'vertical', 'aria-valuemin': '0', 'aria-valuemax': '100'}
     },
     'search': {'nameFrom': ['author'], 'superclasses': ['landmark']},
-    'section': {
-      'abstract': true,
-      'nameFrom': ['contents', 'author'],
-      'superclasses': ['structure'],
-      'supportedAttributes': ['aria-expanded']
-    },
+    'searchbox': {'nameFrom': ['author'], 'superclasses': ['textbox'], 'nameRequired': true},
+    'section': {'abstract': true, 'superclasses': ['structure'], 'supportedAttributes': ['aria-expanded']},
     'sectionhead': {
       'abstract': true,
       'nameFrom': ['contents', 'author'],
       'superclasses': ['structure'],
       'supportedAttributes': ['aria-expanded']
     },
-    'select': {'abstract': true, 'nameFrom': ['author'], 'superclasses': ['composite', 'group', 'input']},
-    'separator': {
-      'nameFrom': ['author'],
-      'superclasses': ['structure'],
-      'supportedAttributes': ['aria-expanded', 'aria-orientation']
-    },
+    'select': {'abstract': true, 'nameFrom': ['author'], 'superclasses': ['composite', 'group']},
+    // TODO(aboxhall): separator properties depend on focusability
+    'separator': {'nameFrom': ['author'], 'superclasses': ['structure'], 'supportedAttributes': ['aria-orientation']},
     'slider': {
       'nameFrom': ['author'],
       'requiredAttributes': ['aria-valuemax', 'aria-valuemin', 'aria-valuenow'],
       'superclasses': ['input', 'range'],
-      'supportedAttributes': ['aria-orientation']
+      'supportedAttributes': ['aria-orientation'],
+      'nameRequired': true,
+      'childrenPresentational': true,
+      // TODO(aboxhall): aria-valuenow default is halfway between aria-valuemin and aria-valuemax
+      'implicitValues': {'aria-orientation': 'horizontal', 'aria-valuemin': '0', 'aria-valuemax': '100'}
     },
     'spinbutton': {
       'nameFrom': ['author'],
       'requiredAttributes': ['aria-valuemax', 'aria-valuemin', 'aria-valuenow'],
-      'superclasses': ['input', 'range'],
-      'supportedAttributes': ['aria-required']
+      'superclasses': ['composite', 'input', 'range'],
+      'supportedAttributes': ['aria-required'],
+      'nameRequired': true,
+      'implicitValues': {'aria-valuenow': '0'}
+    },
+    'status': {
+      'nameFrom': ['author'],
+      'superclasses': ['section'],
+      'implicitValues': {'aria-live': 'polite', 'aria-atomic': 'true'}
     },
-    'status': {'superclasses': ['region']},
     'structure': {'abstract': true, 'superclasses': ['roletype']},
+    'switch': {
+      'nameFrom': ['contents', 'author'],
+      'superclasses': ['checkbox'],
+      'requiredAttributes': ['aria-checked'],
+      'nameRequired': true,
+      'childrenPresentational': true,
+      'implicitValues': {'aria-checked': 'false'}
+    },
     'tab': {
       'nameFrom': ['contents', 'author'],
       'scope': ['tablist'],
       'superclasses': ['sectionhead', 'widget'],
-      'supportedAttributes': ['aria-selected']
+      'supportedAttributes': ['aria-selected'],
+      'childrenPresentational': true,
+      'implicitValues': {'aria-selected': 'false'}
+    },
+    'table': {
+      'nameFrom': ['author'],
+      'superclasses': ['section'],
+      'mustContain': ['row'],
+      'supportedAttributes': ['aria-colcount', 'aria-rowcount'],
+      'nameRequired': true
     },
     'tablist': {
-      'mustContain': ['tab'],
       'nameFrom': ['author'],
-      'superclasses': ['composite', 'directory'],
-      'supportedAttributes': ['aria-level']
+      'superclasses': ['composite'],
+      'mustContain': ['tab'],
+      'supportedAttributes': ['aria-level', 'aria-multiselectable', 'aria-orientation'],
+      'implicitValues': {'aria-orientation': 'horizontal'}
     },
-    'tabpanel': {'nameFrom': ['author'], 'superclasses': ['region']},
+    'tabpanel': {'nameFrom': ['author'], 'superclasses': ['section'], 'nameRequired': true},
+    'term': {'nameFrom': ['author'], 'superclasses': ['section']},
     'textbox': {
       'nameFrom': ['author'],
       'superclasses': ['input'],
-      'supportedAttributes':
-          ['aria-activedescendant', 'aria-autocomplete', 'aria-multiline', 'aria-readonly', 'aria-required']
+      'supportedAttributes': [
+        'aria-activedescendant', 'aria-autocomplete', 'aria-multiline', 'aria-placeholder', 'aria-readonly',
+        'aria-required'
+      ],
+      'nameRequired': true
     },
     'timer': {'nameFrom': ['author'], 'superclasses': ['status']},
-    'toolbar': {'nameFrom': ['author'], 'superclasses': ['group']},
-    'tooltip': {'superclasses': ['section']},
+    'toolbar': {
+      'nameFrom': ['author'],
+      'superclasses': ['group'],
+      'supportedAttributes': ['aria-orientation'],
+      'implicitValues': {'aria-orientation': 'horizontal'}
+    },
+    'tooltip': {'nameFrom': ['contents', 'author'], 'superclasses': ['section'], 'nameRequired': true},
     'tree': {
-      'mustContain': ['group', 'treeitem', 'treeitem'],
       'nameFrom': ['author'],
+      'mustContain': ['group', 'treeitem'],
       'superclasses': ['select'],
-      'supportedAttributes': ['aria-multiselectable', 'aria-required']
+      'supportedAttributes': ['aria-multiselectable', 'aria-required'],
+      'nameRequired': true,
+      'implicitValues': {'aria-orientation': 'vertical'}
+    },
+    'treegrid':
+        {'mustContain': ['row'], 'nameFrom': ['author'], 'superclasses': ['grid', 'tree'], 'nameRequired': true},
+    'treeitem': {
+      'nameFrom': ['contents', 'author'],
+      'scope': ['group', 'tree'],
+      'superclasses': ['listitem', 'option'],
+      'nameRequired': true
     },
-    'treegrid': {'mustContain': ['row'], 'nameFrom': ['author'], 'superclasses': ['grid', 'tree']},
-    'treeitem':
-        {'nameFrom': ['contents', 'author'], 'scope': ['group', 'tree'], 'superclasses': ['listitem', 'option']},
     'widget': {'abstract': true, 'superclasses': ['roletype']},
     'window': {
       'abstract': true,
       'nameFrom': ['author'],
       'superclasses': ['roletype'],
-      'supportedAttributes': ['aria-expanded']
+      'supportedAttributes': ['aria-expanded', 'aria-modal']
     }
   }
 };