/src/mozilla-central/accessible/atk/nsMaiInterfaceHypertext.cpp
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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 | | |
17 | | using namespace mozilla::a11y; |
18 | | |
19 | | extern "C" { |
20 | | |
21 | | static AtkHyperlink* |
22 | | getLinkCB(AtkHypertext *aText, gint aLinkIndex) |
23 | 0 | { |
24 | 0 | AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText)); |
25 | 0 | AtkObject* atkHyperLink = nullptr; |
26 | 0 | if (accWrap) { |
27 | 0 | HyperTextAccessible* hyperText = accWrap->AsHyperText(); |
28 | 0 | NS_ENSURE_TRUE(hyperText, nullptr); |
29 | 0 |
|
30 | 0 | Accessible* hyperLink = hyperText->LinkAt(aLinkIndex); |
31 | 0 | if (!hyperLink || !hyperLink->IsLink()) { |
32 | 0 | return nullptr; |
33 | 0 | } |
34 | 0 | |
35 | 0 | atkHyperLink = AccessibleWrap::GetAtkObject(hyperLink); |
36 | 0 | } else if (ProxyAccessible* proxy = GetProxy(ATK_OBJECT(aText))) { |
37 | 0 | ProxyAccessible* proxyLink = proxy->LinkAt(aLinkIndex); |
38 | 0 | if (!proxyLink) |
39 | 0 | return nullptr; |
40 | 0 | |
41 | 0 | atkHyperLink = GetWrapperFor(proxyLink); |
42 | 0 | } |
43 | 0 |
|
44 | 0 | NS_ENSURE_TRUE(IS_MAI_OBJECT(atkHyperLink), nullptr); |
45 | 0 | return MAI_ATK_OBJECT(atkHyperLink)->GetAtkHyperlink(); |
46 | 0 | } |
47 | | |
48 | | static gint |
49 | | getLinkCountCB(AtkHypertext *aText) |
50 | 0 | { |
51 | 0 | AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText)); |
52 | 0 | if (accWrap) { |
53 | 0 | HyperTextAccessible* hyperText = accWrap->AsHyperText(); |
54 | 0 | NS_ENSURE_TRUE(hyperText, -1); |
55 | 0 | return hyperText->LinkCount(); |
56 | 0 | } |
57 | 0 | |
58 | 0 | if (ProxyAccessible* proxy = GetProxy(ATK_OBJECT(aText))) { |
59 | 0 | return proxy->LinkCount(); |
60 | 0 | } |
61 | 0 | |
62 | 0 | return -1; |
63 | 0 | } |
64 | | |
65 | | static gint |
66 | | getLinkIndexCB(AtkHypertext *aText, gint aCharIndex) |
67 | 0 | { |
68 | 0 | AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText)); |
69 | 0 | if (accWrap) { |
70 | 0 | HyperTextAccessible* hyperText = accWrap->AsHyperText(); |
71 | 0 | NS_ENSURE_TRUE(hyperText, -1); |
72 | 0 |
|
73 | 0 | return hyperText->LinkIndexAtOffset(aCharIndex); |
74 | 0 | } |
75 | 0 | |
76 | 0 | if (ProxyAccessible* proxy = GetProxy(ATK_OBJECT(aText))) { |
77 | 0 | return proxy->LinkIndexAtOffset(aCharIndex); |
78 | 0 | } |
79 | 0 | |
80 | 0 | return -1; |
81 | 0 | } |
82 | | } |
83 | | |
84 | | void |
85 | | hypertextInterfaceInitCB(AtkHypertextIface* aIface) |
86 | 0 | { |
87 | 0 | NS_ASSERTION(aIface, "no interface!"); |
88 | 0 | if (MOZ_UNLIKELY(!aIface)) |
89 | 0 | return; |
90 | 0 | |
91 | 0 | aIface->get_link = getLinkCB; |
92 | 0 | aIface->get_n_links = getLinkCountCB; |
93 | 0 | aIface->get_link_index = getLinkIndexCB; |
94 | 0 | } |