1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #include "InterfaceInitFuncs.h"
8
9 #include "Accessible-inl.h"
10 #include "HyperTextAccessible.h"
11 #include "nsMai.h"
12 #include "nsMaiHyperlink.h"
13 #include "ProxyAccessible.h"
14 #include "mozilla/Likely.h"
15
16 using namespace mozilla::a11y;
17
18 extern "C" {
19
getLinkCB(AtkHypertext * aText,gint aLinkIndex)20 static AtkHyperlink* getLinkCB(AtkHypertext* aText, gint aLinkIndex) {
21 AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
22 AtkObject* atkHyperLink = nullptr;
23 if (accWrap) {
24 HyperTextAccessible* hyperText = accWrap->AsHyperText();
25 NS_ENSURE_TRUE(hyperText, nullptr);
26
27 Accessible* hyperLink = hyperText->LinkAt(aLinkIndex);
28 if (!hyperLink || !hyperLink->IsLink()) {
29 return nullptr;
30 }
31
32 atkHyperLink = AccessibleWrap::GetAtkObject(hyperLink);
33 } else if (ProxyAccessible* proxy = GetProxy(ATK_OBJECT(aText))) {
34 ProxyAccessible* proxyLink = proxy->LinkAt(aLinkIndex);
35 if (!proxyLink) return nullptr;
36
37 atkHyperLink = GetWrapperFor(proxyLink);
38 }
39
40 NS_ENSURE_TRUE(IS_MAI_OBJECT(atkHyperLink), nullptr);
41 return MAI_ATK_OBJECT(atkHyperLink)->GetAtkHyperlink();
42 }
43
getLinkCountCB(AtkHypertext * aText)44 static gint getLinkCountCB(AtkHypertext* aText) {
45 AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
46 if (accWrap) {
47 HyperTextAccessible* hyperText = accWrap->AsHyperText();
48 NS_ENSURE_TRUE(hyperText, -1);
49 return hyperText->LinkCount();
50 }
51
52 if (ProxyAccessible* proxy = GetProxy(ATK_OBJECT(aText))) {
53 return proxy->LinkCount();
54 }
55
56 return -1;
57 }
58
getLinkIndexCB(AtkHypertext * aText,gint aCharIndex)59 static gint getLinkIndexCB(AtkHypertext* aText, gint aCharIndex) {
60 AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
61 if (accWrap) {
62 HyperTextAccessible* hyperText = accWrap->AsHyperText();
63 NS_ENSURE_TRUE(hyperText, -1);
64
65 return hyperText->LinkIndexAtOffset(aCharIndex);
66 }
67
68 if (ProxyAccessible* proxy = GetProxy(ATK_OBJECT(aText))) {
69 return proxy->LinkIndexAtOffset(aCharIndex);
70 }
71
72 return -1;
73 }
74 }
75
hypertextInterfaceInitCB(AtkHypertextIface * aIface)76 void hypertextInterfaceInitCB(AtkHypertextIface* aIface) {
77 NS_ASSERTION(aIface, "no interface!");
78 if (MOZ_UNLIKELY(!aIface)) return;
79
80 aIface->get_link = getLinkCB;
81 aIface->get_n_links = getLinkCountCB;
82 aIface->get_link_index = getLinkIndexCB;
83 }
84