Add support for UIA accessibility interfaces like IAccessibleEx and IRawElementProviderSimple.

ui/views/accessibility/native_view_accessibility_win.h

 // Copyright (c) 2011 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 VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_WIN_H_
 #define VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_WIN_H_
 #pragma once
 
 #include <atlbase.h>
 #include <atlcom.h>
 
 #include <oleacc.h>
+#include <UIAutomationCore.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "third_party/iaccessible2/ia2_api_all.h"
 #include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/views/controls/native/native_view_host.h"
 #include "ui/views/view.h"
 
 namespace ui {
 enum TextBoundaryDirection;
 enum TextBoundaryType;
@@ skipping 10 matching lines @@
 // providing accessibility to be used by screen readers and other assistive
 // technology (AT).
 //
 ////////////////////////////////////////////////////////////////////////////////
 class __declspec(uuid("26f5641a-246d-457b-a96d-07f3fae6acf2"))
 NativeViewAccessibilityWin
   : public CComObjectRootEx<CComMultiThreadModel>,
     public IDispatchImpl<IAccessible2, &IID_IAccessible2,
                            &LIBID_IAccessible2Lib>,
     public IAccessibleText,
-    public IServiceProvider {
+    public IServiceProvider,
+    public IAccessibleEx,
+    public IRawElementProviderSimple {
  public:
   BEGIN_COM_MAP(NativeViewAccessibilityWin)
     COM_INTERFACE_ENTRY2(IDispatch, IAccessible2)
     COM_INTERFACE_ENTRY2(IAccessible, IAccessible2)
     COM_INTERFACE_ENTRY(IAccessible2)
     COM_INTERFACE_ENTRY(IAccessibleText)
     COM_INTERFACE_ENTRY(IServiceProvider)
+    COM_INTERFACE_ENTRY(IAccessibleEx)
+    COM_INTERFACE_ENTRY(IRawElementProviderSimple)
   END_COM_MAP()
 
   // Create method for view accessibility.
   static scoped_refptr<NativeViewAccessibilityWin> Create(views::View* view);
 
   virtual ~NativeViewAccessibilityWin();
 
   void set_view(views::View* view) { view_ = view; }
 
   // Supported IAccessible methods.
@@ skipping 218 matching lines @@
       LONG x, LONG y) {
     return E_NOTIMPL;
   }
 
   //
   // IServiceProvider methods.
   //
 
   STDMETHODIMP QueryService(REFGUID guidService, REFIID riid, void** object);
 
+  // IAccessibleEx methods not implemented.

[dmazzoni, 2012/04/04 06:02:00]

Nit: same

[ananta, 2012/04/04 19:23:00]

Done.

+  STDMETHODIMP GetObjectForChild(long child_id, IAccessibleEx** ret) {
+    return E_NOTIMPL;
+  }
+  STDMETHODIMP GetIAccessiblePair(IAccessible** acc, long* child_id) {
+    return E_NOTIMPL;
+  }
+  STDMETHODIMP GetRuntimeId(SAFEARRAY** runtime_id) {
+    return E_NOTIMPL;
+  }
+  STDMETHODIMP ConvertReturnedElement(IRawElementProviderSimple* element,
+                                      IAccessibleEx** acc) {
+    return E_NOTIMPL;
+  }
+
+  // IRawElementProviderSimple methods.
+  // The GetPatternProvider/GetPropertyValue methods need to be implemented for
+  // the on screen keyboard to show up in Windows 8 metro.
+  STDMETHOD(GetPatternProvider)(PATTERNID id, IUnknown** provider);
+  STDMETHOD(GetPropertyValue)(PROPERTYID id, VARIANT* ret);
+
+  // IRawElementProviderSimple methods not implemented.
+  STDMETHOD(get_ProviderOptions)(enum ProviderOptions* ret) {
+    return E_NOTIMPL;
+  }
+  STDMETHOD(get_HostRawElementProvider)(IRawElementProviderSimple** provider) {
+    return E_NOTIMPL;
+  }
+
   // Returns a conversion from the event (as defined in accessibility_types.h)
   // to an MSAA event.
   static int32 MSAAEvent(ui::AccessibilityTypes::Event event);
 
   // Returns a conversion from the Role (as defined in accessibility_types.h)
   // to an MSAA role.
   static int32 MSAARole(ui::AccessibilityTypes::Role role);
 
   // Returns a conversion from the State (as defined in accessibility_types.h)
   // to MSAA states set.
@@ skipping 47 matching lines @@
   // A unique id for each object, needed for IAccessible2.
   long unique_id_;
 
   // Next unique id to assign.
   static long next_unique_id_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewAccessibilityWin);
 };
 
 #endif  // VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_WIN_H_