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ax_platform_node_win.h
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ax_platform_node_win.h
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//
// 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 <objbase.h>
#include <oleacc.h>
#include <oleauto.h>
#include <uiautomation.h>
#include <wrl/client.h>
#include <array>
#include <map>
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "base/metrics/histogram_macros.h"
#include "base/observer_list.h"
#include "base/win/atl.h"
#include "third_party/iaccessible2/ia2_api_all.h"
#include "ui/accessibility/ax_enums.mojom-forward.h"
#include "ui/accessibility/ax_export.h"
#include "ui/accessibility/ax_text_utils.h"
#include "ui/accessibility/platform/ax_platform_node_base.h"
#include "ui/accessibility/platform/ax_platform_text_boundary.h"
#include "ui/accessibility/platform/ichromeaccessible.h"
#include "ui/gfx/range/range.h"
// IMPORTANT!
// These values are written to logs. Do not renumber or delete
// existing items; add new entries to the end of the list.
enum {
UMA_API_ACC_DO_DEFAULT_ACTION = 0,
UMA_API_ACC_HIT_TEST = 1,
UMA_API_ACC_LOCATION = 2,
UMA_API_ACC_NAVIGATE = 3,
UMA_API_ACC_SELECT = 4,
UMA_API_ADD_SELECTION = 5,
UMA_API_CONVERT_RETURNED_ELEMENT = 6,
UMA_API_DO_ACTION = 7,
UMA_API_GET_ACCESSIBLE_AT = 8,
UMA_API_GET_ACC_CHILD = 9,
UMA_API_GET_ACC_CHILD_COUNT = 10,
UMA_API_GET_ACC_DEFAULT_ACTION = 11,
UMA_API_GET_ACC_DESCRIPTION = 12,
UMA_API_GET_ACC_FOCUS = 13,
UMA_API_GET_ACC_HELP = 14,
UMA_API_GET_ACC_HELP_TOPIC = 15,
UMA_API_GET_ACC_KEYBOARD_SHORTCUT = 16,
UMA_API_GET_ACC_NAME = 17,
UMA_API_GET_ACC_PARENT = 18,
UMA_API_GET_ACC_ROLE = 19,
UMA_API_GET_ACC_SELECTION = 20,
UMA_API_GET_ACC_STATE = 21,
UMA_API_GET_ACC_VALUE = 22,
UMA_API_GET_ANCHOR = 23,
UMA_API_GET_ANCHOR_TARGET = 24,
UMA_API_GET_APP_NAME = 25,
UMA_API_GET_APP_VERSION = 26,
UMA_API_GET_ATTRIBUTES_FOR_NAMES = 27,
UMA_API_GET_CAPTION = 28,
UMA_API_GET_CARET_OFFSET = 29,
UMA_API_GET_CELL_AT = 30,
UMA_API_GET_CHARACTER_EXTENTS = 31,
UMA_API_GET_CHILD_AT = 32,
UMA_API_GET_CHILD_INDEX = 33,
UMA_API_GET_CLIPPED_SUBSTRING_BOUNDS = 34,
UMA_API_GET_COLUMN_DESCRIPTION = 35,
UMA_API_GET_COLUMN_EXTENT = 36,
UMA_API_GET_COLUMN_EXTENT_AT = 37,
UMA_API_GET_COLUMN_HEADER = 38,
UMA_API_GET_COLUMN_HEADER_CELLS = 39,
UMA_API_GET_COLUMN_INDEX = 40,
UMA_API_GET_COMPUTED_STYLE = 41,
UMA_API_GET_COMPUTED_STYLE_FOR_PROPERTIES = 42,
UMA_API_GET_CURRENT_VALUE = 43,
UMA_API_GET_DESCRIPTION = 44,
UMA_API_GET_DOC_TYPE = 45,
UMA_API_GET_DOM_TEXT = 46,
UMA_API_GET_END_INDEX = 47,
UMA_API_GET_EXTENDED_ROLE = 48,
UMA_API_GET_EXTENDED_STATES = 49,
UMA_API_GET_FIRST_CHILD = 50,
UMA_API_GET_FONT_FAMILY = 51,
UMA_API_GET_GROUP_POSITION = 52,
UMA_API_GET_HOST_RAW_ELEMENT_PROVIDER = 53,
UMA_API_GET_HYPERLINK = 54,
UMA_API_GET_HYPERLINK_INDEX = 55,
UMA_API_GET_IACCESSIBLE_PAIR = 56,
UMA_API_GET_IMAGE_POSITION = 57,
UMA_API_GET_IMAGE_SIZE = 58,
UMA_API_GET_INDEX_IN_PARENT = 59,
UMA_API_GET_INNER_HTML = 60,
UMA_API_GET_IS_COLUMN_SELECTED = 61,
UMA_API_GET_IS_ROW_SELECTED = 62,
UMA_API_GET_IS_SELECTED = 63,
UMA_API_GET_KEY_BINDING = 64,
UMA_API_GET_LANGUAGE = 65,
UMA_API_GET_LAST_CHILD = 66,
UMA_API_GET_LOCALE = 67,
UMA_API_GET_LOCALIZED_EXTENDED_ROLE = 68,
UMA_API_GET_LOCALIZED_EXTENDED_STATES = 69,
UMA_API_GET_LOCALIZED_NAME = 70,
UMA_API_GET_LOCAL_INTERFACE = 71,
UMA_API_GET_MAXIMUM_VALUE = 72,
UMA_API_GET_MIME_TYPE = 73,
UMA_API_GET_MINIMUM_VALUE = 74,
UMA_API_GET_NAME = 75,
UMA_API_GET_NAMESPACE_URI_FOR_ID = 76,
UMA_API_GET_NEW_TEXT = 77,
UMA_API_GET_NEXT_SIBLING = 78,
UMA_API_GET_NODE_INFO = 79,
UMA_API_GET_N_CHARACTERS = 80,
UMA_API_GET_N_COLUMNS = 81,
UMA_API_GET_N_EXTENDED_STATES = 82,
UMA_API_GET_N_HYPERLINKS = 83,
UMA_API_GET_N_RELATIONS = 84,
UMA_API_GET_N_ROWS = 85,
UMA_API_GET_N_SELECTED_CELLS = 86,
UMA_API_GET_N_SELECTED_CHILDREN = 87,
UMA_API_GET_N_SELECTED_COLUMNS = 88,
UMA_API_GET_N_SELECTED_ROWS = 89,
UMA_API_GET_N_SELECTIONS = 90,
UMA_API_GET_OBJECT_FOR_CHILD = 91,
UMA_API_GET_OFFSET_AT_POINT = 92,
UMA_API_GET_OLD_TEXT = 93,
UMA_API_GET_PARENT_NODE = 94,
UMA_API_GET_PATTERN_PROVIDER = 95,
UMA_API_GET_PREVIOUS_SIBLING = 96,
UMA_API_GET_PROPERTY_VALUE = 97,
UMA_API_GET_PROVIDER_OPTIONS = 98,
UMA_API_GET_RELATION = 99,
UMA_API_GET_RELATIONS = 100,
UMA_API_GET_ROW_COLUMN_EXTENTS = 101,
UMA_API_GET_ROW_COLUMN_EXTENTS_AT_INDEX = 102,
UMA_API_GET_ROW_DESCRIPTION = 103,
UMA_API_GET_ROW_EXTENT = 104,
UMA_API_GET_ROW_EXTENT_AT = 105,
UMA_API_GET_ROW_HEADER = 106,
UMA_API_GET_ROW_HEADER_CELLS = 107,
UMA_API_GET_ROW_INDEX = 108,
UMA_API_GET_RUNTIME_ID = 109,
UMA_API_GET_SELECTED_CELLS = 110,
UMA_API_GET_SELECTED_CHILDREN = 111,
UMA_API_GET_SELECTED_COLUMNS = 112,
UMA_API_GET_SELECTED_ROWS = 113,
UMA_API_GET_SELECTION = 114,
UMA_API_GET_START_INDEX = 115,
UMA_API_GET_STATES = 116,
UMA_API_GET_SUMMARY = 117,
UMA_API_GET_TABLE = 118,
UMA_API_GET_TEXT = 119,
UMA_API_GET_TEXT_AFTER_OFFSET = 120,
UMA_API_GET_TEXT_AT_OFFSET = 121,
UMA_API_GET_TEXT_BEFORE_OFFSET = 122,
UMA_API_GET_TITLE = 123,
UMA_API_GET_TOOLKIT_NAME = 124,
UMA_API_GET_TOOLKIT_VERSION = 125,
UMA_API_GET_UNCLIPPED_SUBSTRING_BOUNDS = 126,
UMA_API_GET_UNIQUE_ID = 127,
UMA_API_GET_URL = 128,
UMA_API_GET_VALID = 129,
UMA_API_GET_WINDOW_HANDLE = 130,
UMA_API_IA2_GET_ATTRIBUTES = 131,
UMA_API_IA2_SCROLL_TO = 132,
UMA_API_IAACTION_GET_DESCRIPTION = 133,
UMA_API_IATEXT_GET_ATTRIBUTES = 134,
UMA_API_ISIMPLEDOMNODE_GET_ATTRIBUTES = 135,
UMA_API_ISIMPLEDOMNODE_SCROLL_TO = 136,
UMA_API_N_ACTIONS = 137,
UMA_API_PUT_ALTERNATE_VIEW_MEDIA_TYPES = 138,
UMA_API_QUERY_SERVICE = 139,
UMA_API_REMOVE_SELECTION = 140,
UMA_API_ROLE = 141,
UMA_API_SCROLL_SUBSTRING_TO = 142,
UMA_API_SCROLL_SUBSTRING_TO_POINT = 143,
UMA_API_SCROLL_TO_POINT = 144,
UMA_API_SCROLL_TO_SUBSTRING = 145,
UMA_API_SELECT_COLUMN = 146,
UMA_API_SELECT_ROW = 147,
UMA_API_SET_CARET_OFFSET = 148,
UMA_API_SET_CURRENT_VALUE = 149,
UMA_API_SET_SELECTION = 150,
UMA_API_TABLE2_GET_SELECTED_COLUMNS = 151,
UMA_API_TABLE2_GET_SELECTED_ROWS = 152,
UMA_API_TABLECELL_GET_COLUMN_INDEX = 153,
UMA_API_TABLECELL_GET_IS_SELECTED = 154,
UMA_API_TABLECELL_GET_ROW_INDEX = 155,
UMA_API_UNSELECT_COLUMN = 156,
UMA_API_UNSELECT_ROW = 157,
UMA_API_GET_BOUNDINGRECTANGLE = 158,
UMA_API_GET_FRAGMENTROOT = 159,
UMA_API_GETEMBEDDEDFRAGMENTROOTS = 160,
UMA_API_NAVIGATE = 161,
UMA_API_SETFOCUS = 162,
UMA_API_SHOWCONTEXTMENU = 163,
UMA_API_EXPANDCOLLAPSE_COLLAPSE = 164,
UMA_API_EXPANDCOLLAPSE_EXPAND = 165,
UMA_API_EXPANDCOLLAPSE_GET_EXPANDCOLLAPSESTATE = 166,
UMA_API_GRIDITEM_GET_COLUMN = 167,
UMA_API_GRIDITEM_GET_COLUMNSPAN = 168,
UMA_API_GRIDITEM_GET_CONTAININGGRID = 169,
UMA_API_GRIDITEM_GET_ROW = 170,
UMA_API_GRIDITEM_GET_ROWSPAN = 171,
UMA_API_GRID_GETITEM = 172,
UMA_API_GRID_GET_ROWCOUNT = 173,
UMA_API_GRID_GET_COLUMNCOUNT = 174,
UMA_API_INVOKE_INVOKE = 175,
UMA_API_RANGEVALUE_SETVALUE = 176,
UMA_API_RANGEVALUE_GET_LARGECHANGE = 177,
UMA_API_RANGEVALUE_GET_MAXIMUM = 178,
UMA_API_RANGEVALUE_GET_MINIMUM = 179,
UMA_API_RANGEVALUE_GET_SMALLCHANGE = 180,
UMA_API_RANGEVALUE_GET_VALUE = 181,
UMA_API_SCROLLITEM_SCROLLINTOVIEW = 182,
UMA_API_SCROLL_SCROLL = 183,
UMA_API_SCROLL_SETSCROLLPERCENT = 184,
UMA_API_SCROLL_GET_HORIZONTALLYSCROLLABLE = 185,
UMA_API_SCROLL_GET_HORIZONTALSCROLLPERCENT = 186,
UMA_API_SCROLL_GET_HORIZONTALVIEWSIZE = 187,
UMA_API_SCROLL_GET_VERTICALLYSCROLLABLE = 188,
UMA_API_SCROLL_GET_VERTICALSCROLLPERCENT = 189,
UMA_API_SCROLL_GET_VERTICALVIEWSIZE = 190,
UMA_API_SELECTIONITEM_ADDTOSELECTION = 191,
UMA_API_SELECTIONITEM_REMOVEFROMSELECTION = 192,
UMA_API_SELECTIONITEM_SELECT = 193,
UMA_API_SELECTIONITEM_GET_ISSELECTED = 194,
UMA_API_SELECTIONITEM_GET_SELECTIONCONTAINER = 195,
UMA_API_SELECTION_GETSELECTION = 196,
UMA_API_SELECTION_GET_CANSELECTMULTIPLE = 197,
UMA_API_SELECTION_GET_ISSELECTIONREQUIRED = 198,
UMA_API_TABLEITEM_GETCOLUMNHEADERITEMS = 199,
UMA_API_TABLEITEM_GETROWHEADERITEMS = 200,
UMA_API_TABLE_GETCOLUMNHEADERS = 201,
UMA_API_TABLE_GETROWHEADERS = 202,
UMA_API_TABLE_GET_ROWORCOLUMNMAJOR = 203,
UMA_API_TEXT_GETSELECTION = 204,
UMA_API_TEXT_GETVISIBLERANGES = 205,
UMA_API_TEXT_RANGEFROMCHILD = 206,
UMA_API_TEXT_RANGEFROMPOINT = 207,
UMA_API_TEXT_GET_DOCUMENTRANGE = 208,
UMA_API_TEXT_GET_SUPPORTEDTEXTSELECTION = 209,
UMA_API_TEXTCHILD_GET_TEXTCONTAINER = 210,
UMA_API_TEXTCHILD_GET_TEXTRANGE = 211,
UMA_API_TEXTEDIT_GETACTIVECOMPOSITION = 212,
UMA_API_TEXTEDIT_GETCONVERSIONTARGET = 213,
UMA_API_TEXTRANGE_CLONE = 214,
UMA_API_TEXTRANGE_COMPARE = 215,
UMA_API_TEXTRANGE_COMPAREENDPOINTS = 216,
UMA_API_TEXTRANGE_EXPANDTOENCLOSINGUNIT = 217,
UMA_API_TEXTRANGE_FINDATTRIBUTE = 218,
UMA_API_TEXTRANGE_FINDTEXT = 219,
UMA_API_TEXTRANGE_GETATTRIBUTEVALUE = 220,
UMA_API_TEXTRANGE_GETBOUNDINGRECTANGLES = 221,
UMA_API_TEXTRANGE_GETENCLOSINGELEMENT = 222,
UMA_API_TEXTRANGE_GETTEXT = 223,
UMA_API_TEXTRANGE_MOVE = 224,
UMA_API_TEXTRANGE_MOVEENDPOINTBYUNIT = 225,
UMA_API_TEXTRANGE_MOVEENPOINTBYRANGE = 226,
UMA_API_TEXTRANGE_SELECT = 227,
UMA_API_TEXTRANGE_ADDTOSELECTION = 228,
UMA_API_TEXTRANGE_REMOVEFROMSELECTION = 229,
UMA_API_TEXTRANGE_SCROLLINTOVIEW = 230,
UMA_API_TEXTRANGE_GETCHILDREN = 231,
UMA_API_TOGGLE_TOGGLE = 232,
UMA_API_TOGGLE_GET_TOGGLESTATE = 233,
UMA_API_VALUE_SETVALUE = 234,
UMA_API_VALUE_GET_ISREADONLY = 235,
UMA_API_VALUE_GET_VALUE = 236,
UMA_API_WINDOW_SETVISUALSTATE = 237,
UMA_API_WINDOW_CLOSE = 238,
UMA_API_WINDOW_WAITFORINPUTIDLE = 239,
UMA_API_WINDOW_GET_CANMAXIMIZE = 240,
UMA_API_WINDOW_GET_CANMINIMIZE = 241,
UMA_API_WINDOW_GET_ISMODAL = 242,
UMA_API_WINDOW_GET_WINDOWVISUALSTATE = 243,
UMA_API_WINDOW_GET_WINDOWINTERACTIONSTATE = 244,
UMA_API_WINDOW_GET_ISTOPMOST = 245,
UMA_API_ELEMENT_PROVIDER_FROM_POINT = 246,
UMA_API_GET_FOCUS = 247,
UMA_API_ADVISE_EVENT_ADDED = 248,
UMA_API_ADVISE_EVENT_REMOVED = 249,
UMA_API_ITEMCONTAINER_FINDITEMBYPROPERTY = 250,
// This must always be the last enum. It's okay for its value to
// increase, but none of the other enum values may change.
UMA_API_MAX
};
#define WIN_ACCESSIBILITY_API_HISTOGRAM(enum_value) \
UMA_HISTOGRAM_ENUMERATION("Accessibility.WinAPIs", enum_value, UMA_API_MAX)
#define WIN_ACCESSIBILITY_API_PERF_HISTOGRAM(enum_value) \
SCOPED_UMA_HISTOGRAM_SHORT_TIMER( \
"Accessibility.Performance.WinAPIs." #enum_value)
//
// Macros to use at the top of any AXPlatformNodeWin (or derived class) method
// that implements a UIA COM interface. The error code UIA_E_ELEMENTNOTAVAILABLE
// signals to the OS that the object is no longer valid and no further methods
// should be called on it.
//
#define UIA_VALIDATE_CALL() \
if (!AXPlatformNodeBase::GetDelegate()) \
return UIA_E_ELEMENTNOTAVAILABLE;
#define UIA_VALIDATE_CALL_1_ARG(arg) \
if (!AXPlatformNodeBase::GetDelegate()) \
return UIA_E_ELEMENTNOTAVAILABLE; \
if (!arg) \
return E_INVALIDARG; \
*arg = {};
namespace base {
namespace win {
class VariantVector;
} // namespace win
} // namespace base
namespace ui {
class AXPlatformNodeWin;
class AXPlatformRelationWin;
// A simple interface for a class that wants to be notified when Windows
// accessibility APIs are used by a client, a strong indication that full
// accessibility support should be enabled.
class AX_EXPORT WinAccessibilityAPIUsageObserver {
public:
WinAccessibilityAPIUsageObserver();
virtual ~WinAccessibilityAPIUsageObserver();
virtual void OnIAccessible2Used() = 0;
virtual void OnScreenReaderHoneyPotQueried() = 0;
virtual void OnAccNameCalled() = 0;
virtual void OnUIAutomationUsed() = 0;
};
// Get an observer list that allows modules across the codebase to
// listen to when usage of Windows accessibility APIs is detected.
extern AX_EXPORT
base::ObserverList<WinAccessibilityAPIUsageObserver>::Unchecked&
GetWinAccessibilityAPIUsageObserverList();
// TODO(nektar): Remove multithread superclass since we don't support it.
class AX_EXPORT __declspec(uuid("26f5641a-246d-457b-a96d-07f3fae6acf2"))
AXPlatformNodeWin : public CComObjectRootEx<CComMultiThreadModel>,
public IDispatchImpl<IAccessible2_4,
&IID_IAccessible2_4,
&LIBID_IAccessible2Lib>,
public IAccessibleEx,
public IAccessibleHypertext,
public IAccessibleTable,
public IAccessibleTable2,
public IAccessibleTableCell,
public IAccessibleValue,
public IExpandCollapseProvider,
public IGridItemProvider,
public IGridProvider,
public IInvokeProvider,
public IRangeValueProvider,
public IRawElementProviderFragment,
public IRawElementProviderSimple2,
public IScrollItemProvider,
public IScrollProvider,
public ISelectionItemProvider,
public ISelectionProvider,
public IServiceProvider,
public ITableItemProvider,
public ITableProvider,
public IToggleProvider,
public IValueProvider,
public IWindowProvider,
public IChromeAccessible,
public AXPlatformNodeBase {
using IDispatchImpl::Invoke;
public:
BEGIN_COM_MAP(AXPlatformNodeWin)
// TODO(nektar): Change the following to COM_INTERFACE_ENTRY(IDispatch).
COM_INTERFACE_ENTRY2(IDispatch, IAccessible2_2)
COM_INTERFACE_ENTRY2(IUnknown, IDispatchImpl)
// TODO(nektar): Find a way to remove the following entry because it's not
// an interface.
COM_INTERFACE_ENTRY(AXPlatformNodeWin)
COM_INTERFACE_ENTRY(IAccessible)
COM_INTERFACE_ENTRY(IAccessible2)
COM_INTERFACE_ENTRY(IAccessible2_2)
COM_INTERFACE_ENTRY(IAccessible2_3)
COM_INTERFACE_ENTRY(IAccessible2_4)
COM_INTERFACE_ENTRY(IAccessibleEx)
COM_INTERFACE_ENTRY(IAccessibleText)
COM_INTERFACE_ENTRY(IAccessibleHypertext)
COM_INTERFACE_ENTRY(IAccessibleTable)
COM_INTERFACE_ENTRY(IAccessibleTable2)
COM_INTERFACE_ENTRY(IAccessibleTableCell)
COM_INTERFACE_ENTRY(IAccessibleValue)
COM_INTERFACE_ENTRY(IChromeAccessible)
COM_INTERFACE_ENTRY(IExpandCollapseProvider)
COM_INTERFACE_ENTRY(IGridItemProvider)
COM_INTERFACE_ENTRY(IGridProvider)
COM_INTERFACE_ENTRY(IInvokeProvider)
COM_INTERFACE_ENTRY(IRangeValueProvider)
COM_INTERFACE_ENTRY(IRawElementProviderFragment)
COM_INTERFACE_ENTRY(IRawElementProviderSimple)
COM_INTERFACE_ENTRY(IRawElementProviderSimple2)
COM_INTERFACE_ENTRY(IScrollItemProvider)
COM_INTERFACE_ENTRY(IScrollProvider)
COM_INTERFACE_ENTRY(ISelectionItemProvider)
COM_INTERFACE_ENTRY(ISelectionProvider)
COM_INTERFACE_ENTRY(ITableItemProvider)
COM_INTERFACE_ENTRY(ITableProvider)
COM_INTERFACE_ENTRY(IToggleProvider)
COM_INTERFACE_ENTRY(IValueProvider)
COM_INTERFACE_ENTRY(IWindowProvider)
COM_INTERFACE_ENTRY(IServiceProvider)
END_COM_MAP()
~AXPlatformNodeWin() override;
void Init(AXPlatformNodeDelegate* delegate) override;
// Clear any AXPlatformRelationWin nodes owned by this node.
void ClearOwnRelations();
// AXPlatformNode overrides.
gfx::NativeViewAccessible GetNativeViewAccessible() override;
void NotifyAccessibilityEvent(ax::mojom::Event event_type) override;
// AXPlatformNodeBase overrides.
void Destroy() override;
bool IsPlatformCheckable() const override;
//
// IAccessible methods.
//
// Retrieves the child element or child object at a given point on the screen.
IFACEMETHODIMP accHitTest(LONG screen_physical_pixel_x,
LONG screen_physical_pixel_y,
VARIANT* child) override;
// Performs the object's default action.
IFACEMETHODIMP accDoDefaultAction(VARIANT var_id) override;
// Retrieves the specified object's current screen location.
IFACEMETHODIMP accLocation(LONG* physical_pixel_left,
LONG* physical_pixel_top,
LONG* width,
LONG* height,
VARIANT var_id) override;
// Traverses to another UI element and retrieves the object.
IFACEMETHODIMP accNavigate(LONG nav_dir,
VARIANT start,
VARIANT* end) override;
// Retrieves an IDispatch interface pointer for the specified child.
IFACEMETHODIMP get_accChild(VARIANT var_child,
IDispatch** disp_child) override;
// Retrieves the number of accessible children.
IFACEMETHODIMP get_accChildCount(LONG* child_count) override;
// Retrieves a string that describes the object's default action.
IFACEMETHODIMP get_accDefaultAction(VARIANT var_id,
BSTR* default_action) override;
// Retrieves the tooltip description.
IFACEMETHODIMP get_accDescription(VARIANT var_id, BSTR* desc) override;
// Retrieves the object that has the keyboard focus.
IFACEMETHODIMP get_accFocus(VARIANT* focus_child) override;
// Retrieves the specified object's shortcut.
IFACEMETHODIMP get_accKeyboardShortcut(VARIANT var_id,
BSTR* access_key) override;
// Retrieves the name of the specified object.
IFACEMETHODIMP get_accName(VARIANT var_id, BSTR* name) override;
// Retrieves the IDispatch interface of the object's parent.
IFACEMETHODIMP get_accParent(IDispatch** disp_parent) override;
// Retrieves information describing the role of the specified object.
IFACEMETHODIMP get_accRole(VARIANT var_id, VARIANT* role) override;
// Retrieves the current state of the specified object.
IFACEMETHODIMP get_accState(VARIANT var_id, VARIANT* state) override;
// Gets the help string for the specified object.
IFACEMETHODIMP get_accHelp(VARIANT var_id, BSTR* help) override;
// 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.
IFACEMETHODIMP get_accValue(VARIANT var_id, BSTR* value) override;
IFACEMETHODIMP put_accValue(VARIANT var_id, BSTR new_value) override;
// IAccessible methods not implemented.
IFACEMETHODIMP get_accSelection(VARIANT* selected) override;
IFACEMETHODIMP accSelect(LONG flags_sel, VARIANT var_id) override;
IFACEMETHODIMP get_accHelpTopic(BSTR* help_file,
VARIANT var_id,
LONG* topic_id) override;
IFACEMETHODIMP put_accName(VARIANT var_id, BSTR put_name) override;
//
// IAccessible2 methods.
//
IFACEMETHODIMP role(LONG* role) override;
IFACEMETHODIMP get_states(AccessibleStates* states) override;
IFACEMETHODIMP get_uniqueID(LONG* unique_id) override;
IFACEMETHODIMP get_windowHandle(HWND* window_handle) override;
IFACEMETHODIMP get_relationTargetsOfType(BSTR type,
LONG max_targets,
IUnknown*** targets,
LONG* n_targets) override;
IFACEMETHODIMP get_attributes(BSTR* attributes) override;
IFACEMETHODIMP get_indexInParent(LONG* index_in_parent) override;
IFACEMETHODIMP get_nRelations(LONG* n_relations) override;
IFACEMETHODIMP get_relation(LONG relation_index,
IAccessibleRelation** relation) override;
IFACEMETHODIMP get_relations(LONG max_relations,
IAccessibleRelation** relations,
LONG* n_relations) override;
IFACEMETHODIMP get_attribute(BSTR name, VARIANT* attribute) override;
IFACEMETHODIMP get_extendedRole(BSTR* extended_role) override;
IFACEMETHODIMP scrollTo(enum IA2ScrollType scroll_type) override;
IFACEMETHODIMP scrollToPoint(enum IA2CoordinateType coordinate_type,
LONG x,
LONG y) override;
IFACEMETHODIMP get_groupPosition(LONG* group_level,
LONG* similar_items_in_group,
LONG* position_in_group) override;
IFACEMETHODIMP get_localizedExtendedRole(
BSTR* localized_extended_role) override;
IFACEMETHODIMP get_nExtendedStates(LONG* n_extended_states) override;
IFACEMETHODIMP get_extendedStates(LONG max_extended_states,
BSTR** extended_states,
LONG* n_extended_states) override;
IFACEMETHODIMP get_localizedExtendedStates(
LONG max_localized_extended_states,
BSTR** localized_extended_states,
LONG* n_localized_extended_states) override;
IFACEMETHODIMP get_locale(IA2Locale* locale) override;
IFACEMETHODIMP get_accessibleWithCaret(IUnknown** accessible,
LONG* caret_offset) override;
//
// IAccessible2_3 methods.
//
IFACEMETHODIMP get_selectionRanges(IA2Range** ranges, LONG* nRanges) override;
//
// IAccessible2_4 methods.
//
IFACEMETHODIMP setSelectionRanges(LONG nRanges, IA2Range* ranges) override;
//
// IAccessibleEx methods.
//
IFACEMETHODIMP GetObjectForChild(LONG child_id,
IAccessibleEx** result) override;
IFACEMETHODIMP GetIAccessiblePair(IAccessible** accessible,
LONG* child_id) override;
//
// IExpandCollapseProvider methods.
//
IFACEMETHODIMP Collapse() override;
IFACEMETHODIMP Expand() override;
IFACEMETHODIMP get_ExpandCollapseState(ExpandCollapseState* result) override;
//
// IGridItemProvider methods.
//
IFACEMETHODIMP get_Column(int* result) override;
IFACEMETHODIMP get_ColumnSpan(int* result) override;
IFACEMETHODIMP get_ContainingGrid(
IRawElementProviderSimple** result) override;
IFACEMETHODIMP get_Row(int* result) override;
IFACEMETHODIMP get_RowSpan(int* result) override;
//
// IGridProvider methods.
//
IFACEMETHODIMP GetItem(int row,
int column,
IRawElementProviderSimple** result) override;
IFACEMETHODIMP get_RowCount(int* result) override;
IFACEMETHODIMP get_ColumnCount(int* result) override;
//
// IInvokeProvider methods.
//
IFACEMETHODIMP Invoke() override;
//
// IScrollItemProvider methods.
//
IFACEMETHODIMP ScrollIntoView() override;
//
// IScrollProvider methods.
//
IFACEMETHODIMP Scroll(ScrollAmount horizontal_amount,
ScrollAmount vertical_amount) override;
IFACEMETHODIMP SetScrollPercent(double horizontal_percent,
double vertical_percent) override;
IFACEMETHODIMP get_HorizontallyScrollable(BOOL* result) override;
IFACEMETHODIMP get_HorizontalScrollPercent(double* result) override;
// Horizontal size of the viewable region as a percentage of the total content
// area.
IFACEMETHODIMP get_HorizontalViewSize(double* result) override;
IFACEMETHODIMP get_VerticallyScrollable(BOOL* result) override;
IFACEMETHODIMP get_VerticalScrollPercent(double* result) override;
// Vertical size of the viewable region as a percentage of the total content
// area.
IFACEMETHODIMP get_VerticalViewSize(double* result) override;
//
// ISelectionItemProvider methods.
//
IFACEMETHODIMP AddToSelection() override;
IFACEMETHODIMP RemoveFromSelection() override;
IFACEMETHODIMP Select() override;
IFACEMETHODIMP get_IsSelected(BOOL* result) override;
IFACEMETHODIMP get_SelectionContainer(
IRawElementProviderSimple** result) override;
//
// ISelectionProvider methods.
//
IFACEMETHODIMP GetSelection(SAFEARRAY** result) override;
IFACEMETHODIMP get_CanSelectMultiple(BOOL* result) override;
IFACEMETHODIMP get_IsSelectionRequired(BOOL* result) override;
//
// ITableItemProvider methods.
//
IFACEMETHODIMP GetColumnHeaderItems(SAFEARRAY** result) override;
IFACEMETHODIMP GetRowHeaderItems(SAFEARRAY** result) override;
//
// ITableProvider methods.
//
IFACEMETHODIMP GetColumnHeaders(SAFEARRAY** result) override;
IFACEMETHODIMP GetRowHeaders(SAFEARRAY** result) override;
IFACEMETHODIMP get_RowOrColumnMajor(RowOrColumnMajor* result) override;
//
// IToggleProvider methods.
//
IFACEMETHODIMP Toggle() override;
IFACEMETHODIMP get_ToggleState(ToggleState* result) override;
//
// IValueProvider methods.
//
IFACEMETHODIMP SetValue(LPCWSTR val) override;
IFACEMETHODIMP get_IsReadOnly(BOOL* result) override;
IFACEMETHODIMP get_Value(BSTR* result) override;
//
// IWindowProvider methods.
//
IFACEMETHODIMP SetVisualState(WindowVisualState window_visual_state) override;
IFACEMETHODIMP Close() override;
IFACEMETHODIMP WaitForInputIdle(int milliseconds, BOOL* result) override;
IFACEMETHODIMP get_CanMaximize(BOOL* result) override;
IFACEMETHODIMP get_CanMinimize(BOOL* result) override;
IFACEMETHODIMP get_IsModal(BOOL* result) override;
IFACEMETHODIMP get_WindowVisualState(WindowVisualState* result) override;
IFACEMETHODIMP get_WindowInteractionState(
WindowInteractionState* result) override;
IFACEMETHODIMP get_IsTopmost(BOOL* result) override;
//
// IRangeValueProvider methods.
//
IFACEMETHODIMP SetValue(double val) override;
IFACEMETHODIMP get_LargeChange(double* result) override;
IFACEMETHODIMP get_Maximum(double* result) override;
IFACEMETHODIMP get_Minimum(double* result) override;
IFACEMETHODIMP get_SmallChange(double* result) override;
IFACEMETHODIMP get_Value(double* result) override;
// IAccessibleEx methods not implemented.
IFACEMETHODIMP
ConvertReturnedElement(IRawElementProviderSimple* element,
IAccessibleEx** acc) override;
//
// IAccessibleText methods.
//
IFACEMETHODIMP get_nCharacters(LONG* n_characters) override;
IFACEMETHODIMP get_caretOffset(LONG* offset) override;
IFACEMETHODIMP get_nSelections(LONG* n_selections) override;
IFACEMETHODIMP get_selection(LONG selection_index,
LONG* start_offset,
LONG* end_offset) override;
IFACEMETHODIMP get_text(LONG start_offset,
LONG end_offset,
BSTR* text) override;
IFACEMETHODIMP get_textAtOffset(LONG offset,
enum IA2TextBoundaryType boundary_type,
LONG* start_offset,
LONG* end_offset,
BSTR* text) override;
IFACEMETHODIMP get_textBeforeOffset(LONG offset,
enum IA2TextBoundaryType boundary_type,
LONG* start_offset,
LONG* end_offset,
BSTR* text) override;
IFACEMETHODIMP get_textAfterOffset(LONG offset,
enum IA2TextBoundaryType boundary_type,
LONG* start_offset,
LONG* end_offset,
BSTR* text) override;
IFACEMETHODIMP get_offsetAtPoint(LONG x,
LONG y,
enum IA2CoordinateType coord_type,
LONG* offset) override;
//
// IAccessibleTable methods.
//
// get_description - also used by IAccessibleImage
IFACEMETHODIMP get_accessibleAt(LONG row,
LONG column,
IUnknown** accessible) override;
IFACEMETHODIMP get_caption(IUnknown** accessible) override;
IFACEMETHODIMP get_childIndex(LONG row_index,
LONG column_index,
LONG* cell_index) override;
IFACEMETHODIMP get_columnDescription(LONG column, BSTR* description) override;
IFACEMETHODIMP
get_columnExtentAt(LONG row, LONG column, LONG* n_columns_spanned) override;
IFACEMETHODIMP
get_columnHeader(IAccessibleTable** accessible_table,
LONG* starting_row_index) override;
IFACEMETHODIMP get_columnIndex(LONG cell_index, LONG* column_index) override;
IFACEMETHODIMP get_nColumns(LONG* column_count) override;
IFACEMETHODIMP get_nRows(LONG* row_count) override;
IFACEMETHODIMP get_nSelectedChildren(LONG* cell_count) override;
IFACEMETHODIMP get_nSelectedColumns(LONG* column_count) override;
IFACEMETHODIMP get_nSelectedRows(LONG* row_count) override;
IFACEMETHODIMP get_rowDescription(LONG row, BSTR* description) override;
IFACEMETHODIMP get_rowExtentAt(LONG row,
LONG column,
LONG* n_rows_spanned) override;
IFACEMETHODIMP
get_rowHeader(IAccessibleTable** accessible_table,
LONG* starting_column_index) override;
IFACEMETHODIMP get_rowIndex(LONG cell_index, LONG* row_index) override;
IFACEMETHODIMP get_selectedChildren(LONG max_children,
LONG** children,
LONG* n_children) override;
IFACEMETHODIMP get_selectedColumns(LONG max_columns,
LONG** columns,
LONG* n_columns) override;
IFACEMETHODIMP get_selectedRows(LONG max_rows,
LONG** rows,
LONG* n_rows) override;
IFACEMETHODIMP get_summary(IUnknown** accessible) override;
IFACEMETHODIMP
get_isColumnSelected(LONG column, boolean* is_selected) override;
IFACEMETHODIMP get_isRowSelected(LONG row, boolean* is_selected) override;
IFACEMETHODIMP get_isSelected(LONG row,
LONG column,
boolean* is_selected) override;
IFACEMETHODIMP
get_rowColumnExtentsAtIndex(LONG index,
LONG* row,
LONG* column,
LONG* row_extents,
LONG* column_extents,
boolean* is_selected) override;
IFACEMETHODIMP selectRow(LONG row) override;
IFACEMETHODIMP selectColumn(LONG column) override;
IFACEMETHODIMP unselectRow(LONG row) override;
IFACEMETHODIMP unselectColumn(LONG column) override;
IFACEMETHODIMP
get_modelChange(IA2TableModelChange* model_change) override;
//
// IAccessibleTable2 methods.
//
// (Most of these are duplicates of IAccessibleTable methods, only the
// unique ones are included here.)
//
IFACEMETHODIMP get_cellAt(LONG row, LONG column, IUnknown** cell) override;
IFACEMETHODIMP get_nSelectedCells(LONG* cell_count) override;
IFACEMETHODIMP
get_selectedCells(IUnknown*** cells, LONG* n_selected_cells) override;
IFACEMETHODIMP get_selectedColumns(LONG** columns, LONG* n_columns) override;
IFACEMETHODIMP get_selectedRows(LONG** rows, LONG* n_rows) override;
//
// IAccessibleTableCell methods.
//
IFACEMETHODIMP
get_columnExtent(LONG* n_columns_spanned) override;
IFACEMETHODIMP
get_columnHeaderCells(IUnknown*** cell_accessibles,
LONG* n_column_header_cells) override;
IFACEMETHODIMP get_columnIndex(LONG* column_index) override;
IFACEMETHODIMP get_rowExtent(LONG* n_rows_spanned) override;
IFACEMETHODIMP
get_rowHeaderCells(IUnknown*** cell_accessibles,
LONG* n_row_header_cells) override;
IFACEMETHODIMP get_rowIndex(LONG* row_index) override;
IFACEMETHODIMP get_isSelected(boolean* is_selected) override;
IFACEMETHODIMP
get_rowColumnExtents(LONG* row,
LONG* column,
LONG* row_extents,
LONG* column_extents,
boolean* is_selected) override;
IFACEMETHODIMP get_table(IUnknown** table) override;
//
// IAccessibleHypertext methods not implemented.
//
IFACEMETHODIMP get_nHyperlinks(LONG* hyperlink_count) override;
IFACEMETHODIMP
get_hyperlink(LONG index, IAccessibleHyperlink** hyperlink) override;
IFACEMETHODIMP
get_hyperlinkIndex(LONG char_index, LONG* hyperlink_index) override;
//
// IAccessibleText methods not implemented.
//
IFACEMETHODIMP get_newText(IA2TextSegment* new_text) override;
IFACEMETHODIMP get_oldText(IA2TextSegment* old_text) override;
IFACEMETHODIMP addSelection(LONG start_offset, LONG end_offset) override;
IFACEMETHODIMP get_attributes(LONG offset,
LONG* start_offset,
LONG* end_offset,
BSTR* text_attributes) override;
IFACEMETHODIMP get_characterExtents(LONG offset,
enum IA2CoordinateType coord_type,
LONG* x,
LONG* y,
LONG* width,
LONG* height) override;
IFACEMETHODIMP removeSelection(LONG selection_index) override;
IFACEMETHODIMP setCaretOffset(LONG offset) override;
IFACEMETHODIMP setSelection(LONG selection_index,
LONG start_offset,
LONG end_offset) override;
IFACEMETHODIMP scrollSubstringTo(LONG start_index,
LONG end_index,
enum IA2ScrollType scroll_type) override;
IFACEMETHODIMP scrollSubstringToPoint(LONG start_index,
LONG end_index,
enum IA2CoordinateType coordinate_type,
LONG x,
LONG y) override;
//
// IAccessibleValue methods.
//
IFACEMETHODIMP get_currentValue(VARIANT* value) override;
IFACEMETHODIMP get_minimumValue(VARIANT* value) override;
IFACEMETHODIMP get_maximumValue(VARIANT* value) override;