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351 lines
11 KiB
Plaintext
351 lines
11 KiB
Plaintext
/*************************************************************************
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*
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* File Name (Accessible2.idl)
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*
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* IAccessible2 IDL Specification
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*
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* Copyright (c) IBM Corp. 2007
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* Copyright (c) Sun Microsystems, Inc. 2000, 2006
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02110-1301 USA
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*
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************************************************************************/
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/** @mainpage
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@section _interfaces Interfaces
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IAccessible2\n
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IAccessibleAction\n
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IAccessibleApplication\n
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IAccessibleComponent\n
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IAccessibleHypertext\n
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IAccessibleHyperlink\n
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IAccessibleImage\n
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IAccessibleRelation\n
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IAccessibleTable\n
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IAccessibleText\n
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IAccessibleEditableText\n
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IAccessibleValue
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@section _structs Structs
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IA2Locale\n
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IA2TableModelChange\n
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IA2TextSegment
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@section _enums Enums
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::IA2CoordinateType values define the requested coordinate type (screen or parent window).\n
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::IA2EventID values identify events.\n
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::IA2Role values define roles.\n
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::IA2ScrollType values define where to place an object or substring on the screen.\n
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::IA2TableModelChangeType values describe the kinds of changes made to a table (insert, delete, update).\n
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::IA2TextBoundaryType values define the requested text unit (character, word, sentence, line, paragraph).
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@section _constants Constants
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@ref grpRelations\n
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@ref grpStates\n
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@section _license License
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@ref _licensePage "LGPL"
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@page _licensePage License
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IAccessible2 IDL Specification
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Copyright (c) IBM Corp. 2006\n
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Copyright (c) Sun Microsystems, Inc. 2000, 2006
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License version 2.1, as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02110-1301 USA
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You may also refer to http://www.gnu.org/licenses/lgpl.html
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**/
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import "objidl.idl";
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import "oaidl.idl";
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import "oleacc.idl";
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import "AccessibleRelation.idl";
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import "AccessibleStates.idl";
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import "IA2CommonTypes.idl";
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/// A structure defining the locale of an accessible object.
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typedef struct {
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BSTR language; ///< ISO 639-1 Alpha-2 two character language code
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BSTR country; ///< ISO 3166-1 Alpha-2 two character country code
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BSTR variant; ///< Application specific variant of the locale
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} IA2Locale;
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/** This interface must always be provided for objects that support some
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portion of the collection of the IAccessible2 interfaces.
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IAccessible2 is a subclass of MSAA's IAccessible. This is a matter of
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convenience, i.e. an IAccessible2 is an IAccessible so MSAA methods can be
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easily accessed. None of MSAA's IAccessible methods are overridden or extended.
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*/
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[object, uuid(E89F726E-C4F4-4c19-BB19-B647D7FA8478)]
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interface IAccessible2 : IAccessible
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{
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/** @brief Returns the number of accessible relations for this object.
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@param [out] nRelations
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*/
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[propget] HRESULT nRelations
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(
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[out, retval] long *nRelations
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);
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/** @brief Returns one accessible relation for this object.
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@param [in] relationIndex
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0-based
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@param [out] relation
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*/
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[propget] HRESULT relation
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(
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[in] long relationIndex,
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[out, retval] IAccessibleRelation **relation
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);
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/** @brief Returns multiple accessible relations for this object.
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@param [in] maxRelations
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maximum number of relations to get
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@param [out] relation
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array of accessible relation objects
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@param [out] nRelations
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length of array (not more than maxRelations)
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*/
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[propget] HRESULT relations
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(
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[in] long maxRelations,
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[out, size_is(maxRelations), length_is(*nRelations)]
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IAccessibleRelation **relation,
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[out, retval] long *nRelations
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);
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/** @brief Returns the role of an IAccessible2 object.
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Note: For convenience MSAA roles are also passed through this method so the
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AT doesn't have to also fetch roles through MSAA's get_accRole.
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@param [out] role
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The role of an IAccessible2 object.
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*/
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HRESULT role
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(
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[out, retval] long *role
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);
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/** @brief Makes an object visible on the screen.
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@param [in] scrollType
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Defines where the object should be placed on the screen.
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*/
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HRESULT scrollTo
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(
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[in] enum IA2ScrollType scrollType
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);
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/** @brief Moves the top left of an object to a specified location.
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Note: S_FALSE is returned if the object is already at the specified location.
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@param [in] coordinateType
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Specifies whether the coordinates are relative to the screen or the parent object.
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@param [in] x
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Defines the x coordinate.
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@param [in] y
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Defines the y coordinate.
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*/
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HRESULT scrollToPoint
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(
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[in] enum IA2CoordinateType coordinateType,
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[in] long x,
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[in] long y
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);
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/** @brief Returns grouping information.
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Used for tree items, list items, tab panel labels, radio buttons, etc.
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Also used for collectons of non-text objects.
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@param [out] groupLevel
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0-based
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@param [out] similarItemsInGroup
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1-based
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@param [out] positionInGroup
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0-based
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*/
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[propget] HRESULT groupPosition
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(
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[out] long *groupLevel,
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[out] long *similarItemsInGroup,
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[out, retval] long *positionInGroup
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);
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/** @brief Returns the bit strip containing any IAccessible2 states.
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@param [out] states
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*/
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[propget] HRESULT states
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(
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[out, retval] AccessibleStates *states
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);
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/** @brief Returns the extended role.
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An extended role is a role which is dynamically generated by the application.
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It is not predefined by the IAccessible2 specification.
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@param [out] extendedRole
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*/
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[propget] HRESULT extendedRole
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(
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[out, retval] BSTR *extendedRole
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);
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/** @brief Returns the localized extended role.
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@param [out] localizedExtendedRole
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*/
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[propget] HRESULT localizedExtendedRole
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(
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[out, retval] BSTR *localizedExtendedRole
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);
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/** @brief Returns the number of extended states.
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@param [out] nExtendedStates
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*/
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[propget] HRESULT nExtendedStates
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(
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[out, retval] long *nExtendedStates
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);
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/** @brief Returns the extended states (array of strings).
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An extended state is a state which is dynamically generated by the application.
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It is not predefined by the IAccessible2 specification.
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@param [in] maxExtendedStates
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@param [out] extendedStates
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@param [out] nExtendedStates
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*/
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[propget] HRESULT extendedStates
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(
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[in] long maxExtendedStates,
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[out, size_is(,maxExtendedStates), length_is(,*nExtendedStates)] BSTR **extendedStates,
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[out, retval] long *nExtendedStates
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);
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/** @brief Returns the localized extended states (array of strings).
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@param [in] maxLocalizedExtendedStates
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@param [out] localizedExtendedStates
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@param [out] nLocalizedExtendedStates
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*/
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[propget] HRESULT localizedExtendedStates
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(
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[in] long maxLocalizedExtendedStates,
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[out, size_is(,maxLocalizedExtendedStates), length_is(,*nLocalizedExtendedStates)] BSTR **localizedExtendedStates,
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[out, retval] long *nLocalizedExtendedStates
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);
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/** @brief Returns the unique ID.
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The uniqueID is an identifier for this object, is unique within the
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current window, and remains the same for the lifetime of the accessible
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object. This is the same value that is passed in the idChild parameter of
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the WinEventProc callback function for any events that occur on the object,
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and is typically a negative number. Using negative numbers prevents the ID
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from conflicting with the use of positive numbers that might possibly be
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used to indicate a direct child N of the window's root accessible object,
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and thus the implementation of get_accChild() can differentiate between
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requests for direct child N vs. a descendant lower in the hierarchy with a
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given uniqueID. This is important because get_accChild() is used by
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AccessibleObjectFromEvent() to retrieve the accessible object which fired
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the event by starting from the window's root accessible object.
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This value is provided so the AT can have access to it even when not
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handling an event for the object.
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An example of when this value is useful if the AT wants to build a cache.
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The AT could cache the uniqueIDs in addition to other data being cached.
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When an event is fired the AT could map that to its internal model. Thus,
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if there's a REORDER/SHOW/HIDE event the AT knows which part of the internal
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structure has been invalidated and can refetch just that part.
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This value can also be used by and AT to determine when the current control
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has changed. If the role is the same for two controls that are adjacent in
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the tab order, this can be used to detect the new control.
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Another use of this value by an AT is to identify when a grouping object has
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changed, e.g. when moving from a radio button in one group to a radio button in a
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different group.
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@param [out] uniqueID
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*/
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[propget] HRESULT uniqueID
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(
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[out, retval] long *uniqueID
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);
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/** @brief Returns the window handle for the parent window which contains this object.
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This is the same window handle which will be passed for any events that occur on the
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object, but is cached in the accessible object for use when it would be helpful to
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access the window handle in cases where an event isn't fired on this object.
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A use case is when a screen reader is grabbing an entire web page on a page load.
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Without the availability of windowHandle, the AT would have to get the window handle
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by using WindowFromAccessibleObject on each IAccessible, which is slow because it's
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implemented by oleacc.dll as a loop which crawls up the ancestor chain and looks for
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a ROLE_WINDOW object, mapping that back to a window handle.
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@param [out] windowHandle
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*/
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[propget] HRESULT windowHandle
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(
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[out, retval] HWND *windowHandle
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);
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/** @brief Returns the index of this object in its parent object.
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@param [out] indexInParent
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*/
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[propget] HRESULT indexInParent
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(
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[out, retval] long *indexInParent
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);
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/** @brief Returns the IA2Locale of the accessible object.
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@param [out] locale
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*/
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[propget] HRESULT locale
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(
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[out, retval] IA2Locale *locale
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);
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/** @brief Returns the attributes specific to this IAccessible2 object, such as a cell's formula.
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@param [out] attributes
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*/
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[propget] HRESULT attributes
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(
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[out, retval] BSTR *attributes
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);
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}
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