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+/*************************************************************************
+ *
+ * File Name (AccessibleHyperlink.idl)
+ *
+ * IAccessible2 IDL Specification
+ *
+ * Copyright (c) 2007, 2010 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";
+import "AccessibleAction.idl";
+
+/** @brief This interface represents hyperlinks.
+
+ This interface represents a hyperlink associated with a single substring
+ of text or single non-text object. Non-text objects can have either a
+ single link or a collection of links such as when the non-text object is
+ an image map.
+
+ Linked objects and anchors are implementation dependent. This interface is derived
+ from IAccessibleAction. IAccessibleAction::nActions is one greater than the
+ maximum value for the indices used with the methods of this interface.
+
+ Furthermore, the object that implements this interface has to be connected
+ implicitly or explicitly with an object that implements IAccessibleText.
+ IAccessibleHyperlink::startIndex and IAccessibleHyperlink::endIndex are
+ indices with respect to the text exposed by IAccessibleText.
+
+ This interface provides access to a single object which can have multiple actions.
+ An example is an image map which is an image with multiple links each of which is
+ associated with a separate non-overlapping area of the image. This interface could
+ also be applied to other kinds of objects with multiple actions such as "smart tags"
+ which are objects, typically strings, which have multiple actions such as
+ "Activate URI", "Bookmark URI", etc.
+
+ An interesting use case is an image map where each area is associated with multiple
+ actions, e.g. an image map of smart tags. In this case you would have to implement
+ two levels of accessible hyperlinks. The first level hyperlinks would only implement
+ anchor and anchorTarget. The anchors would all reference the image object. The
+ anchorTargets would reference the second level accessible hyperlink objects. None
+ of the IAccessibleAction methods would be implemented on the first level hyperlink
+ objects. The second level hyperlink objects would implement the IAccessibleAction
+ methods. Their anchors would also reference the image object and their anchorTargets
+ would reference URLs or the objects that would be activated.
+
+ This use case demonstrates that in some cases there is no need for IAccessibleHyperlink
+ to derive from IAccessibleAction. As a result it may be removed in a later version of
+ the IDL and it is suggested that implementations should not rely on the inheritance.
+
+*/
+[object, uuid(01C20F2B-3DD2-400f-949F-AD00BDAB1D41)]
+interface IAccessibleHyperlink : IAccessibleAction
+{
+
+ /** @brief Returns an object that represents the link anchor, as appropriate
+ for the link at the specified index.
+ @param [in] index
+ A 0 based index identifies the anchor when, as in the case of an image map,
+ there is more than one link represented by this object. The valid maximal
+ index is indicated by IAccessibleAction::nActions.
+ @param [out] anchor
+ This is an implementation dependent value. For example, for a text link this
+ method could return the substring of the containing string where the substring
+ is overridden with link behavior, and for an image link this method could return
+ an IUnknown VARIANT for IAccessibleImage. See the section about
+ @ref _variants "VARIANTs" for additional information.
+ @retval S_OK
+ @retval E_INVALIDARG if bad [in] passed
+ */
+ [propget] HRESULT anchor
+ (
+ [in] long index,
+ [out, retval] VARIANT *anchor
+ );
+
+ /** @brief Returns an object representing the target of the link, as appropriate
+ for the link at the specified index.
+ @param [in] index
+ A 0 based index identifies the anchor when, as in the case of an image map,
+ there is more than one link represented by this object. The valid maximal
+ index is indicated by IAccessibleAction::nActions.
+ @param [out] anchorTarget
+ This is an implementation dependent value. For example this method could
+ return a BSTR VARIANT of the URI. Alternatively this method could return an
+ IUnknown VARIANT of a COM interface representing a target object to be
+ activated when the link is activated. See the section about
+ @ref _variants "VARIANTs" for additional information.
+ @retval S_OK
+ @retval E_INVALIDARG if bad [in] passed
+ */
+ [propget] HRESULT anchorTarget
+ (
+ [in] long index,
+ [out, retval] VARIANT *anchorTarget
+ );
+
+ /** @brief Returns the 0 based character offset at which the textual representation of the hyperlink starts.
+
+ The returned value is related to the IAccessibleText interface of the object that
+ owns this hyperlink.
+ @param [out] index
+ @retval S_OK
+ */
+ [propget] HRESULT startIndex
+ (
+ [out, retval] long *index
+ );
+
+ /** @brief Returns the 0 based character offset at which the textual representation of the hyperlink ends.
+
+ The returned value is related to the IAccessibleText interface of the object that
+ owns this hyperlink. The character at the index is not part of the hypertext.
+ @param [out] index
+ @retval S_OK
+ */
+ [propget] HRESULT endIndex
+ (
+ [out, retval] long *index
+ );
+
+ /** @brief Returns whether the target object referenced by this link is still valid.
+
+ This is a volatile state that may change without sending an appropriate event.
+ Returns TRUE if the referenced target is still valid and FALSE otherwise.
+
+ This has also been used to indicate whether or not the URI of the anchorTarget
+ is malformed.
+
+ @param [out] valid
+ If false, one or more of the object's links are invalid.
+ If true, all of the object's links are valid.
+ @retval S_OK
+ @retval S_FALSE if there is nothing to return, [out] value is FALSE
+ @note This method is not being used, is deprecated, and should not be implemented or
+ used. It is likely that this method will be removed in a later version of the IDL.
+ */
+ [propget] HRESULT valid
+ (
+ [out, retval] boolean *valid
+ );
+}