205 lines
6.5 KiB
C++
205 lines
6.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Sun Microsystems, Inc.
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* Portions created by Sun Microsystems are Copyright (C) 2002 Sun
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* Microsystems, Inc. All Rights Reserved.
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*
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* Original Author: Bolian Yin (bolian.yin@sun.com)
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsMaiInterfaceHypertext.h"
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#include "nsIAccessibleDocument.h"
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#include "nsPIAccessNode.h"
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G_BEGIN_DECLS
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static void interfaceInitCB(AtkHypertextIface *aIface);
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/* hypertext interface callbacks */
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static AtkHyperlink *getLinkCB(AtkHypertext *aText, gint aLinkIndex);
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static gint getLinkCountCB(AtkHypertext *aText);
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static gint getLinkIndexCB(AtkHypertext *aText, gint aCharIndex);
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G_END_DECLS
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MaiInterfaceHypertext::MaiInterfaceHypertext(nsAccessibleWrap *aAccWrap,
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nsIWeakReference* aShell):
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MaiInterface(aAccWrap),
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mWeakShell(aShell)
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{
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}
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MaiInterfaceHypertext::~MaiInterfaceHypertext()
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{
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mWeakShell = nsnull;
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}
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MaiInterfaceType
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MaiInterfaceHypertext::GetType()
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{
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return MAI_INTERFACE_HYPERTEXT;
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}
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nsresult
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MaiInterfaceHypertext::GetWeakShell(nsIWeakReference **aWeakShell)
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{
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nsresult rv = NS_ERROR_FAILURE;
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if (mWeakShell) {
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*aWeakShell = mWeakShell;
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NS_IF_ADDREF(*aWeakShell);
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rv = NS_OK;
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}
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else
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*aWeakShell = nsnull;
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return rv;
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}
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const GInterfaceInfo *
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MaiInterfaceHypertext::GetInterfaceInfo()
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{
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static const GInterfaceInfo atk_if_hypertext_info = {
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(GInterfaceInitFunc)interfaceInitCB,
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(GInterfaceFinalizeFunc) NULL,
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NULL
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};
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return &atk_if_hypertext_info;
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}
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/* statics */
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void
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interfaceInitCB(AtkHypertextIface *aIface)
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{
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g_return_if_fail(aIface != NULL);
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aIface->get_link = getLinkCB;
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aIface->get_n_links = getLinkCountCB;
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aIface->get_link_index = getLinkIndexCB;
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}
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AtkHyperlink *
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getLinkCB(AtkHypertext *aText, gint aLinkIndex)
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{
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nsresult rv;
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nsAccessibleWrap *accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
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NS_ENSURE_TRUE(accWrap, nsnull);
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MaiInterfaceHypertext *maiHypertext =
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NS_STATIC_CAST(MaiInterfaceHypertext *,
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accWrap->GetMaiInterface(MAI_INTERFACE_HYPERTEXT));
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NS_ENSURE_TRUE(accWrap, nsnull);
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nsCOMPtr<nsIWeakReference> weakShell;
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rv = maiHypertext->GetWeakShell(getter_AddRefs(weakShell));
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NS_ENSURE_SUCCESS(rv, nsnull);
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nsCOMPtr<nsIAccessibleHyperText> accHyperlink;
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accWrap->QueryInterface(NS_GET_IID(nsIAccessibleHyperText),
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getter_AddRefs(accHyperlink));
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NS_ENSURE_TRUE(accHyperlink, nsnull);
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nsCOMPtr<nsIAccessibleHyperLink> hyperLink;
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rv = accHyperlink->GetLink(aLinkIndex, getter_AddRefs(hyperLink));
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if (NS_FAILED(rv) || !hyperLink)
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return nsnull;
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// The MaiHyperlink and its nsIAccessibleHyperlink are in the same cache.
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// we take hyperlink->get() as Id for the MaiHyperlink.
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// release our ref to the previous one
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nsCOMPtr<nsIAccessibleDocument> accessibleDoc =
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nsAccessNode::GetDocAccessibleFor(weakShell);
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if (!accessibleDoc) {
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NS_WARNING("No accessible document for this presshell");
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return nsnull;
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}
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nsCOMPtr<nsIAccessNode> maiNode;
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accessibleDoc->GetCachedAccessNode(NS_STATIC_CAST(void*, hyperLink.get()),
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getter_AddRefs(maiNode));
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// if the maiHyperlink is not in cache, create it.
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if (!maiNode) {
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maiNode = new MaiHyperlink(hyperLink, nsnull, weakShell);
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if (!maiNode) {
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NS_WARNING("OUT OF MEMORY");
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return nsnull;
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}
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nsCOMPtr<nsPIAccessNode> pMaiNode = do_QueryInterface(maiNode);
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pMaiNode->Init(); // add to cache.
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}
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// we can get AtkHyperlink from the MaiHyperlink
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nsIAccessNode *tmpNode = maiNode;
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MaiHyperlink *maiHyperlink = NS_STATIC_CAST(MaiHyperlink *, tmpNode);
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/* we should not addref the atkhyperlink because we are "get" not "ref" */
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return maiHyperlink->GetAtkHyperlink();
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}
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gint
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getLinkCountCB(AtkHypertext *aText)
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{
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nsAccessibleWrap *accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
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NS_ENSURE_TRUE(accWrap, -1);
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nsCOMPtr<nsIAccessibleHyperText> accHyperlink;
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accWrap->QueryInterface(NS_GET_IID(nsIAccessibleHyperText),
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getter_AddRefs(accHyperlink));
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NS_ENSURE_TRUE(accHyperlink, -1);
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PRInt32 count = -1;
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nsresult rv = accHyperlink->GetLinks(&count);
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NS_ENSURE_SUCCESS(rv, -1);
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return count;
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}
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gint
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getLinkIndexCB(AtkHypertext *aText, gint aCharIndex)
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{
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nsAccessibleWrap *accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
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NS_ENSURE_TRUE(accWrap, -1);
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nsCOMPtr<nsIAccessibleHyperText> accHyperlink;
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accWrap->QueryInterface(NS_GET_IID(nsIAccessibleHyperText),
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getter_AddRefs(accHyperlink));
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NS_ENSURE_TRUE(accHyperlink, -1);
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PRInt32 index = -1;
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nsresult rv = accHyperlink->GetLinkIndex(aCharIndex, &index);
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NS_ENSURE_SUCCESS(rv, -1);
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return index;
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}
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