Revert of Implement NativeViewAccessibilityWin using AXPlatformNodeWin.

ui/accessibility/platform/ax_platform_node_win.h

-// Copyright 2015 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 UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_
-#define UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_
-
-#include <atlbase.h>
-#include <atlcom.h>
-#include <oleacc.h>
-
-#include "third_party/iaccessible2/ia2_api_all.h"
-#include "ui/accessibility/platform/ax_platform_node_base.h"
-
-namespace ui {
-
-class __declspec(uuid("26f5641a-246d-457b-a96d-07f3fae6acf2"))
-AXPlatformNodeWin
-: public CComObjectRootEx<CComMultiThreadModel>,
-    public IDispatchImpl<IAccessible2_2, &IID_IAccessible2,
-                         &LIBID_IAccessible2Lib>,
-    public IAccessibleText,
-    public IServiceProvider,
-    public AXPlatformNodeBase {
- public:
-  BEGIN_COM_MAP(AXPlatformNodeWin)
-    COM_INTERFACE_ENTRY2(IDispatch, IAccessible2_2)
-    COM_INTERFACE_ENTRY(AXPlatformNodeWin)
-    COM_INTERFACE_ENTRY(IAccessible)
-    COM_INTERFACE_ENTRY(IAccessible2)
-    COM_INTERFACE_ENTRY(IAccessible2_2)
-    COM_INTERFACE_ENTRY(IAccessibleText)
-    COM_INTERFACE_ENTRY(IServiceProvider)
-  END_COM_MAP()
-
-  virtual ~AXPlatformNodeWin();
-
-  // AXPlatformNode overrides.
-  void Destroy() override;
-  gfx::NativeViewAccessible GetNativeViewAccessible() override;
-  void NotifyAccessibilityEvent(ui::AXEvent event_type) override;
-
-  // AXPlatformNodeBase overrides.
-  int GetIndexInParent() override;
-
-  //
-  // IAccessible methods.
-  //
-
-  // Retrieves the child element or child object at a given point on the screen.
-  virtual STDMETHODIMP accHitTest(LONG x_left, LONG y_top, VARIANT* child);
-
-  // Performs the object's default action.
-  STDMETHODIMP accDoDefaultAction(VARIANT var_id);
-
-  // Retrieves the specified object's current screen location.
-  STDMETHODIMP accLocation(LONG* x_left,
-                           LONG* y_top,
-                           LONG* width,
-                           LONG* height,
-                           VARIANT var_id);
-
-  // Traverses to another UI element and retrieves the object.
-  STDMETHODIMP accNavigate(LONG nav_dir, VARIANT start, VARIANT* end);
-
-  // Retrieves an IDispatch interface pointer for the specified child.
-  virtual STDMETHODIMP get_accChild(VARIANT var_child, IDispatch** disp_child);
-
-  // Retrieves the number of accessible children.
-  virtual STDMETHODIMP get_accChildCount(LONG* child_count);
-
-  // Retrieves a string that describes the object's default action.
-  STDMETHODIMP get_accDefaultAction(VARIANT var_id, BSTR* default_action);
-
-  // Retrieves the tooltip description.
-  STDMETHODIMP get_accDescription(VARIANT var_id, BSTR* desc);
-
-  // Retrieves the object that has the keyboard focus.
-  STDMETHODIMP get_accFocus(VARIANT* focus_child);
-
-  // Retrieves the specified object's shortcut.
-  STDMETHODIMP get_accKeyboardShortcut(VARIANT var_id, BSTR* access_key);
-
-  // Retrieves the name of the specified object.
-  STDMETHODIMP get_accName(VARIANT var_id, BSTR* name);
-
-  // Retrieves the IDispatch interface of the object's parent.
-  STDMETHODIMP get_accParent(IDispatch** disp_parent);
-
-  // Retrieves information describing the role of the specified object.
-  STDMETHODIMP get_accRole(VARIANT var_id, VARIANT* role);
-
-  // Retrieves the current state of the specified object.
-  STDMETHODIMP get_accState(VARIANT var_id, VARIANT* state);
-
-  // Gets the help string for the specified object.
-  STDMETHODIMP get_accHelp(VARIANT var_id, BSTR* help);
-
-  // Retrieve or set the string value associated with the specified object.
-  // Setting the value is not typically used by screen readers, but it's
-  // used frequently by automation software.
-  STDMETHODIMP get_accValue(VARIANT var_id, BSTR* value);
-  STDMETHODIMP put_accValue(VARIANT var_id, BSTR new_value);
-
-  // IAccessible methods not implemented.
-  STDMETHODIMP get_accSelection(VARIANT* selected);
-  STDMETHODIMP accSelect(LONG flags_sel, VARIANT var_id);
-  STDMETHODIMP get_accHelpTopic(BSTR* help_file,
-                                VARIANT var_id,
-                                LONG* topic_id);
-  STDMETHODIMP put_accName(VARIANT var_id, BSTR put_name);
-
-  //
-  // IAccessible2 methods.
-  //
-
-  STDMETHODIMP role(LONG* role) override;
-
-  STDMETHODIMP get_states(AccessibleStates* states) override;
-
-  STDMETHODIMP get_uniqueID(LONG* unique_id) override;
-
-  STDMETHODIMP get_windowHandle(HWND* window_handle) override;
-
-  STDMETHODIMP get_relationTargetsOfType(BSTR type,
-                                         long max_targets,
-                                         IUnknown*** targets,
-                                         long* n_targets) override;
-
-  STDMETHODIMP get_attributes(BSTR* attributes) override;
-
-  //
-  // IAccessible2 methods not implemented.
-  //
-
-  STDMETHODIMP get_attribute(BSTR name, VARIANT* attribute) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_indexInParent(LONG* index_in_parent) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_extendedRole(BSTR* extended_role) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_nRelations(LONG* n_relations) override { return E_NOTIMPL; }
-  STDMETHODIMP get_relation(LONG relation_index,
-                            IAccessibleRelation** relation) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_relations(LONG max_relations,
-                             IAccessibleRelation** relations,
-                             LONG* n_relations) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP scrollTo(enum IA2ScrollType scroll_type) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP scrollToPoint(enum IA2CoordinateType coordinate_type,
-                             LONG x,
-                             LONG y) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_groupPosition(LONG* group_level,
-                                 LONG* similar_items_in_group,
-                                 LONG* position_in_group) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_localizedExtendedRole(
-      BSTR* localized_extended_role) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_nExtendedStates(LONG* n_extended_states) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_extendedStates(LONG max_extended_states,
-                                  BSTR** extended_states,
-                                  LONG* n_extended_states) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_localizedExtendedStates(
-      LONG max_localized_extended_states,
-      BSTR** localized_extended_states,
-      LONG* n_localized_extended_states) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_locale(IA2Locale* locale) override { return E_NOTIMPL; }
-  STDMETHODIMP get_accessibleWithCaret(IUnknown** accessible,
-                                       long* caret_offset) override {
-    return E_NOTIMPL;
-  }
-
-  //
-  // IAccessibleText methods.
-  //
-
-  STDMETHODIMP get_nCharacters(LONG* n_characters) override;
-
-  STDMETHODIMP get_caretOffset(LONG* offset) override;
-
-  STDMETHODIMP get_nSelections(LONG* n_selections) override;
-
-  STDMETHODIMP get_selection(LONG selection_index,
-                             LONG* start_offset,
-                             LONG* end_offset) override;
-
-  STDMETHODIMP get_text(LONG start_offset,
-                        LONG end_offset,
-                        BSTR* text) override;
-
-  STDMETHODIMP get_textAtOffset(LONG offset,
-                                enum IA2TextBoundaryType boundary_type,
-                                LONG* start_offset,
-                                LONG* end_offset,
-                                BSTR* text) override;
-
-  STDMETHODIMP get_textBeforeOffset(LONG offset,
-                                    enum IA2TextBoundaryType boundary_type,
-                                    LONG* start_offset,
-                                    LONG* end_offset,
-                                    BSTR* text) override;
-
-  STDMETHODIMP get_textAfterOffset(LONG offset,
-                                   enum IA2TextBoundaryType boundary_type,
-                                   LONG* start_offset,
-                                   LONG* end_offset,
-                                   BSTR* text) override;
-
-  STDMETHODIMP get_offsetAtPoint(LONG x,
-                                 LONG y,
-                                 enum IA2CoordinateType coord_type,
-                                 LONG* offset) override;
-
-  //
-  // IAccessibleText methods not implemented.
-  //
-
-  STDMETHODIMP get_newText(IA2TextSegment* new_text) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_oldText(IA2TextSegment* old_text) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP addSelection(LONG start_offset, LONG end_offset) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_attributes(LONG offset,
-                              LONG* start_offset,
-                              LONG* end_offset,
-                              BSTR* text_attributes) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_characterExtents(LONG offset,
-                                    enum IA2CoordinateType coord_type,
-                                    LONG* x,
-                                    LONG* y,
-                                    LONG* width,
-                                    LONG* height) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP removeSelection(LONG selection_index) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP setCaretOffset(LONG offset) override { return E_NOTIMPL; }
-  STDMETHODIMP setSelection(LONG selection_index,
-                            LONG start_offset,
-                            LONG end_offset) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP scrollSubstringTo(LONG start_index,
-                                 LONG end_index,
-                                 enum IA2ScrollType scroll_type) override {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP scrollSubstringToPoint(LONG start_index,
-                                      LONG end_index,
-                                      enum IA2CoordinateType coordinate_type,
-                                      LONG x,
-                                      LONG y) override {
-    return E_NOTIMPL;
-  }
-
-  //
-  // IServiceProvider methods.
-  //
-
-  STDMETHODIMP QueryService(REFGUID guidService, REFIID riid, void** object);
-
- protected:
-  AXPlatformNodeWin();
-
- private:
-  bool IsValidId(const VARIANT& child) const;
-  int MSAARole();
-  int MSAAState();
-  int MSAAEvent(ui::AXEvent event);
-
-  HRESULT GetStringAttributeAsBstr(
-      ui::AXStringAttribute attribute,
-      BSTR* value_bstr) const;
-
-  void AddAlertTarget();
-  void RemoveAlertTarget();
-
-  // Return the text to use for IAccessibleText.
-  base::string16 TextForIAccessibleText();
-
-  // If offset is a member of IA2TextSpecialOffsets this function updates the
-  // value of offset and returns, otherwise offset remains unchanged.
-  void HandleSpecialTextOffset(const base::string16& text, LONG* offset);
-
-  // Convert from a IA2TextBoundaryType to a ui::TextBoundaryType.
-  ui::TextBoundaryType IA2TextBoundaryToTextBoundary(IA2TextBoundaryType type);
-
-  // Search forwards (direction == 1) or backwards (direction == -1)
-  // from the given offset until the given boundary is found, and
-  // return the offset of that boundary.
-  LONG FindBoundary(const base::string16& text,
-                    IA2TextBoundaryType ia2_boundary,
-                    LONG start_offset,
-                    ui::TextBoundaryDirection direction);
-
-  // A windows-specific unique ID for this object. It's returned in
-  // IAccessible2::get_uniqueID, but more importantly it's used for
-  // firing events. On Windows, we fire events on the nearest parent HWND
-  // and pass the unique ID as the child id parameter. When the client
-  // wants to retrieve the object the event was fired on, it calls
-  // get_accChild and passes the child ID. We use negative IDs for the unique
-  // ID so we can distinguish a request for an arbitrary child from a request
-  // for an immediate child of an object by its 0-based index.
-  LONG unique_id_win_;
-};
-
-}  // namespace ui
-
-#endif  // UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_