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+/*************************************************************************
+ *
+ * File Name (AccessibleRelation.idl)
+ *
+ * IAccessible2 IDL Specification
+ *
+ * Copyright (c) 2007, 2013 Linux Foundation
+ * Copyright (c) 2006 IBM Corporation
+ * Copyright (c) 2000, 2006 Sun Microsystems, Inc.
+ * All rights reserved.
+ *
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the Linux Foundation nor the names of its
+ * contributors may be used to endorse or promote products
+ * derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This BSD License conforms to the Open Source Initiative "Simplified
+ * BSD License" as published at:
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * IAccessible2 is a trademark of the Linux Foundation. The IAccessible2
+ * mark may be used in accordance with the Linux Foundation Trademark
+ * Policy to indicate compliance with the IAccessible2 specification.
+ *
+ ************************************************************************/
+
+import "objidl.idl";
+import "oaidl.idl";
+import "oleacc.idl";
+
+/** @defgroup grpRelations Relations
+ Use the following constants to compare against the BSTRs returned by
+ IAccessibleRelation::relationType.
+*/
+///@{
+
+/** The target object is the containing application object. */
+const WCHAR *const IA2_RELATION_CONTAINING_APPLICATION = L"containingApplication";
+
+/** The target object is the containing document object. The target object implements
+ the IAccessibleDocument interface.
+*/
+const WCHAR *const IA2_RELATION_CONTAINING_DOCUMENT = L"containingDocument";
+
+/** The target object is the containing tab pane object. */
+const WCHAR *const IA2_RELATION_CONTAINING_TAB_PANE = L"containingTabPane";
+
+/** The target object is the containing window object. */
+const WCHAR *const IA2_RELATION_CONTAINING_WINDOW = L"containingWindow";
+
+/** Some attribute of this object is affected by a target object. */
+const WCHAR *const IA2_RELATION_CONTROLLED_BY = L"controlledBy";
+
+/** This object is interactive and controls some attribute of a target object. */
+const WCHAR *const IA2_RELATION_CONTROLLER_FOR = L"controllerFor";
+
+/** This object is described by the target object. */
+const WCHAR *const IA2_RELATION_DESCRIBED_BY = L"describedBy";
+
+/** This object is describes the target object. */
+const WCHAR *const IA2_RELATION_DESCRIPTION_FOR = L"descriptionFor";
+
+/** This object is embedded by a target object. */
+const WCHAR *const IA2_RELATION_EMBEDDED_BY = L"embeddedBy";
+
+/** This object embeds a target object. This relation can be used on the
+ OBJID_CLIENT accessible for a top level window to show where the content
+ areas are.
+*/
+const WCHAR *const IA2_RELATION_EMBEDS = L"embeds";
+
+/** Content flows to this object from a target object.
+ This relation and IA2_RELATION_FLOWS_TO are useful to tie text and non-text
+ objects together in order to allow assistive technology to follow the
+ intended reading order.
+*/
+const WCHAR *const IA2_RELATION_FLOWS_FROM = L"flowsFrom";
+
+/** Content flows from this object to a target object. */
+const WCHAR *const IA2_RELATION_FLOWS_TO = L"flowsTo";
+
+/** This object is label for a target object. */
+const WCHAR *const IA2_RELATION_LABEL_FOR = L"labelFor";
+
+/** This object is labelled by a target object. Note that the double L spelling
+ which follows is preferred. Please use it instead. This single L version may
+ be removed in a later version.
+*/
+const WCHAR *const IA2_RELATION_LABELED_BY = L"labelledBy";
+
+/** This object is labelled by a target object. */
+const WCHAR *const IA2_RELATION_LABELLED_BY = L"labelledBy";
+
+/** This object is a member of a group of one or more objects. When
+ there is more than one object in the group each member may have one and the
+ same target, e.g. a grouping object. It is also possible that each member has
+ multiple additional targets, e.g. one for every other member in the group.
+*/
+const WCHAR *const IA2_RELATION_MEMBER_OF = L"memberOf";
+
+/** The target object is the next object in the tab order. */
+const WCHAR *const IA2_RELATION_NEXT_TABBABLE = L"nextTabbable";
+
+/** This object is a logical child of a target object. This relation is the reciprocal
+ of the IA2_RELATION_NODE_PARENT_OF relation. In some cases an application's accessible
+ tree is such that objects can be in a logical parent-child relationship which is
+ different from the hierarchy of the accessible tree. */
+const WCHAR *const IA2_RELATION_NODE_CHILD_OF = L"nodeChildOf";
+
+/** This object is a logical parent of a target object. This relation is the reciprocal
+ of the IA2_RELATION_NODE_CHILD_OF relation. In some cases an application's accessible
+ tree is such that objects can be in a logical parent-child relationship which is
+ different from the hierarchy of the accessible tree. */
+const WCHAR *const IA2_RELATION_NODE_PARENT_OF = L"nodeParentOf";
+
+/** This object is a parent window of the target object. */
+const WCHAR *const IA2_RELATION_PARENT_WINDOW_OF = L"parentWindowOf";
+
+/** This object is a transient component related to the target object.
+ When this object is activated the target object doesn't lose focus.
+*/
+const WCHAR *const IA2_RELATION_POPUP_FOR = L"popupFor";
+
+/** The target object is the previous object in the tab order. */
+const WCHAR *const IA2_RELATION_PREVIOUS_TABBABLE = L"previousTabbable";
+
+/** This object is a sub window of a target object. */
+const WCHAR *const IA2_RELATION_SUBWINDOW_OF = L"subwindowOf";
+
+/** The target object provides the detailed, extended description for this
+ object. It provides more detailed information than would normally be provided
+ using the IA2_RELATION_DESCRIBED_BY relation. A common use for this relation is
+ in digital publishing where an extended description needs to be conveyed in
+ a book that requires structural markup or the embedding of other technology to
+ provide illustrative content. */
+const WCHAR *const IA2_RELATION_DETAILS = L"details";
+
+/** This object provides the detailed, extended description for the target
+ object. See IA2_RELATION_DETAILS. */
+const WCHAR *const IA2_RELATION_DETAILS_FOR = L"detailsFor";
+
+/** The target object is the error message for this object. */
+const WCHAR *const IA2_RELATION_ERROR = L"error";
+
+/** This object is the error message for the target object. */
+const WCHAR *const IA2_RELATION_ERROR_FOR = L"errorFor";
+
+///@}
+
+/** This interface gives access to an object's set of relations.
+*/
+[object, uuid(7CDF86EE-C3DA-496a-BDA4-281B336E1FDC)]
+interface IAccessibleRelation : IUnknown
+{
+ /** @brief Returns the type of the relation.
+ @param [out] relationType
+ The strings returned are defined @ref grpRelations "in this section of the documentation".
+ @retval S_OK
+ */
+ [propget] HRESULT relationType
+ (
+ [out, retval] BSTR *relationType
+ );
+
+ /** @brief Returns a localized version of the relation type.
+ @param [out] localizedRelationType
+ @retval S_OK
+ */
+ [propget] HRESULT localizedRelationType
+ (
+ [out, retval] BSTR *localizedRelationType
+ );
+
+ /** @brief Returns the number of targets for this relation.
+ @param [out] nTargets
+ @retval S_OK
+ */
+ [propget] HRESULT nTargets
+ (
+ [out, retval] long *nTargets
+ );
+
+ /** @brief Returns one accessible relation target.
+ @param [in] targetIndex
+ 0 based index
+ @param [out] target
+ @retval S_OK
+ @retval E_INVALIDARG if bad [in] passed
+ @note Use QueryInterface to get IAccessible2.
+ */
+ [propget] HRESULT target
+ (
+ [in] long targetIndex,
+ [out, retval] IUnknown **target
+ );
+
+ /** @brief Returns multiple accessible relation targets
+ @param [in] maxTargets
+ maximum size of the array allocated by the client
+ @param [out] targets
+ The array of target objects. Note that this array is to be allocated by the
+ client and freed when no longer needed. Refer to @ref _arrayConsideration
+ "Special Consideration when using Arrays" for more details. You will need to use
+ QueryInterface on the IUnknown to get the IAccessible2.
+ @param [out] nTargets
+ actual number of targets in the returned array (not more than maxTargets)
+ @retval S_OK
+ @retval E_INVALIDARG if bad [in] passed, e.g. a negative value
+ */
+ [propget] HRESULT targets
+ (
+ [in] long maxTargets,
+ [out, size_is(maxTargets), length_is(*nTargets)]
+ IUnknown **targets,
+ [out, retval] long *nTargets
+ );
+
+}