Initial skeleton of Accessibility Object Model Phase 1

third_party/WebKit/Source/modules/accessibility/AccessibleNode.h

+// Copyright 2017 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.
+
+#ifndef AccessibleNode_h
+#define AccessibleNode_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "modules/ModulesExport.h"
+#include "wtf/HashMap.h"
+#include "wtf/text/AtomicString.h"
+#include "wtf/text/AtomicStringHash.h"
+
+namespace blink {
+
+class AXObject;
+
+enum class AomStringProperty {

[aboxhall, 2017/03/16 05:49:34]

I think the standard style is to capitalise all of AOM; cf. HTMLElement, DOMRect
etc.

[dmazzoni, 2017/03/16 20:43:16]

Changed throughout

+  None,
+  Role,
+  Label,
+};
+
+struct AomStringPropertyHashTraits : WTF::GenericHashTraits<AomStringProperty> {
+  static const bool emptyValueIsZero = false;
+  static AomStringProperty emptyValue() { return AomStringProperty::None; };
+  static void constructDeletedValue(AomStringProperty& slot, bool) {
+    slot = AomStringProperty::None;
+  }
+  static bool isDeletedValue(AomStringProperty value) {
+    return value == AomStringProperty::None;
+  }
+};
+
+// Accessibility Object Model node
+// Explainer: https://github.com/WICG/aom/blob/master/explainer.md
+// Spec: https://wicg.github.io/aom/spec/
+class MODULES_EXPORT AccessibleNode
+    : public GarbageCollectedFinalized<AccessibleNode>,
+      public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  AccessibleNode(AXObject*);
+  virtual ~AccessibleNode();
+
+  const AtomicString& getProperty(AomStringProperty) const;
+
+  AXObject* getAXObject() { return m_axObject.get(); }
+
+  String role() const;
+  void setRole(const String&);
+
+  String label() const;
+  void setLabel(const String&);
+
+  DECLARE_VIRTUAL_TRACE();
+
+ private:
+  HashMap<AomStringProperty,
+          AtomicString,
+          WTF::IntHash<AomStringProperty>,
+          AomStringPropertyHashTraits>
+      m_stringProperties;
+
+  Member<AXObject> m_axObject;
+};
+
+}  // namespace blink
+
+#endif  // AccessibleNode_h