The Tor Browser / file comparison
comparison: accessible/src/windows/msaa/ServiceProvider.cpp
accessible/src/windows/msaa/ServiceProvider.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:ab0f89b90f00 |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=8 sts=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 "ServiceProvider.h" | |
| 8 | |
| 9 #include "ApplicationAccessibleWrap.h" | |
| 10 #include "Compatibility.h" | |
| 11 #include "DocAccessible.h" | |
| 12 #include "nsAccUtils.h" | |
| 13 #include "nsCoreUtils.h" | |
| 14 #include "Relation.h" | |
| 15 #include "uiaRawElmProvider.h" | |
| 16 | |
| 17 #include "mozilla/Preferences.h" | |
| 18 #include "nsIDocShell.h" | |
| 19 | |
| 20 #include "ISimpleDOMNode_i.c" | |
| 21 | |
| 22 namespace mozilla { | |
| 23 namespace a11y { | |
| 24 | |
| 25 IMPL_IUNKNOWN_QUERY_HEAD(ServiceProvider) | |
| 26 IMPL_IUNKNOWN_QUERY_IFACE(IServiceProvider) | |
| 27 IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(mAccessible) | |
| 28 | |
| 29 | |
| 30 //////////////////////////////////////////////////////////////////////////////// | |
| 31 // IServiceProvider | |
| 32 | |
| 33 STDMETHODIMP | |
| 34 ServiceProvider::QueryService(REFGUID aGuidService, REFIID aIID, | |
| 35 void** aInstancePtr) | |
| 36 { | |
| 37 if (!aInstancePtr) | |
| 38 return E_INVALIDARG; | |
| 39 | |
| 40 *aInstancePtr = nullptr; | |
| 41 | |
| 42 // UIA IAccessibleEx | |
| 43 if (aGuidService == IID_IAccessibleEx && | |
| 44 Preferences::GetBool("accessibility.uia.enable")) { | |
| 45 uiaRawElmProvider* accEx = new uiaRawElmProvider(mAccessible); | |
| 46 HRESULT hr = accEx->QueryInterface(aIID, aInstancePtr); | |
| 47 if (FAILED(hr)) | |
| 48 delete accEx; | |
| 49 | |
| 50 return hr; | |
| 51 } | |
| 52 | |
| 53 // Provide a special service ID for getting the accessible for the browser tab | |
| 54 // document that contains this accessible object. If this accessible object | |
| 55 // is not inside a browser tab then the service fails with E_NOINTERFACE. | |
| 56 // A use case for this is for screen readers that need to switch context or | |
| 57 // 'virtual buffer' when focus moves from one browser tab area to another. | |
| 58 static const GUID SID_IAccessibleContentDocument = | |
| 59 { 0xa5d8e1f3,0x3571,0x4d8f,{0x95,0x21,0x07,0xed,0x28,0xfb,0x07,0x2e} }; | |
| 60 if (aGuidService == SID_IAccessibleContentDocument) { | |
| 61 if (aIID != IID_IAccessible) | |
| 62 return E_NOINTERFACE; | |
| 63 | |
| 64 Relation rel = mAccessible->RelationByType(RelationType::CONTAINING_TAB_PANE); | |
| 65 AccessibleWrap* tabDoc = static_cast<AccessibleWrap*>(rel.Next()); | |
| 66 if (!tabDoc) | |
| 67 return E_NOINTERFACE; | |
| 68 | |
| 69 *aInstancePtr = static_cast<IAccessible*>(tabDoc); | |
| 70 (reinterpret_cast<IUnknown*>(*aInstancePtr))->AddRef(); | |
| 71 return S_OK; | |
| 72 } | |
| 73 | |
| 74 // Can get to IAccessibleApplication from any node via QS | |
| 75 if (aGuidService == IID_IAccessibleApplication || | |
| 76 (Compatibility::IsJAWS() && aIID == IID_IAccessibleApplication)) { | |
| 77 ApplicationAccessibleWrap* applicationAcc = | |
| 78 static_cast<ApplicationAccessibleWrap*>(ApplicationAcc()); | |
| 79 if (!applicationAcc) | |
| 80 return E_NOINTERFACE; | |
| 81 | |
| 82 return applicationAcc->QueryInterface(aIID, aInstancePtr); | |
| 83 } | |
| 84 | |
| 85 static const GUID IID_SimpleDOMDeprecated = | |
| 86 { 0x0c539790,0x12e4,0x11cf,{0xb6,0x61,0x00,0xaa,0x00,0x4c,0xd6,0xd8} }; | |
| 87 if (aGuidService == IID_ISimpleDOMNode || | |
| 88 aGuidService == IID_SimpleDOMDeprecated || | |
| 89 aGuidService == IID_IAccessible || aGuidService == IID_IAccessible2) | |
| 90 return mAccessible->QueryInterface(aIID, aInstancePtr); | |
| 91 | |
| 92 return E_INVALIDARG; | |
| 93 } | |
| 94 | |
| 95 } // namespace a11y | |
| 96 } // namespace mozilla |
