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comparison: accessible/src/windows/msaa/DocAccessibleWrap.cpp
accessible/src/windows/msaa/DocAccessibleWrap.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 "DocAccessibleWrap.h" | |
| 8 | |
| 9 #include "Compatibility.h" | |
| 10 #include "nsWinUtils.h" | |
| 11 #include "mozilla/dom/TabChild.h" | |
| 12 #include "Role.h" | |
| 13 #include "RootAccessible.h" | |
| 14 #include "sdnDocAccessible.h" | |
| 15 #include "Statistics.h" | |
| 16 | |
| 17 #include "nsIDocShell.h" | |
| 18 #include "nsIInterfaceRequestorUtils.h" | |
| 19 | |
| 20 using namespace mozilla; | |
| 21 using namespace mozilla::a11y; | |
| 22 | |
| 23 //////////////////////////////////////////////////////////////////////////////// | |
| 24 // DocAccessibleWrap | |
| 25 //////////////////////////////////////////////////////////////////////////////// | |
| 26 | |
| 27 DocAccessibleWrap:: | |
| 28 DocAccessibleWrap(nsIDocument* aDocument, nsIContent* aRootContent, | |
| 29 nsIPresShell* aPresShell) : | |
| 30 DocAccessible(aDocument, aRootContent, aPresShell), mHWND(nullptr) | |
| 31 { | |
| 32 } | |
| 33 | |
| 34 DocAccessibleWrap::~DocAccessibleWrap() | |
| 35 { | |
| 36 } | |
| 37 | |
| 38 IMPL_IUNKNOWN_QUERY_HEAD(DocAccessibleWrap) | |
| 39 if (aIID == IID_ISimpleDOMDocument) { | |
| 40 statistics::ISimpleDOMUsed(); | |
| 41 *aInstancePtr = static_cast<ISimpleDOMDocument*>(new sdnDocAccessible(this)); | |
| 42 static_cast<IUnknown*>(*aInstancePtr)->AddRef(); | |
| 43 return S_OK; | |
| 44 } | |
| 45 IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(HyperTextAccessibleWrap) | |
| 46 | |
| 47 STDMETHODIMP | |
| 48 DocAccessibleWrap::get_accValue(VARIANT aVarChild, BSTR __RPC_FAR* aValue) | |
| 49 { | |
| 50 A11Y_TRYBLOCK_BEGIN | |
| 51 | |
| 52 if (!aValue) | |
| 53 return E_INVALIDARG; | |
| 54 *aValue = nullptr; | |
| 55 | |
| 56 // For backwards-compat, we still support old MSAA hack to provide URL in accValue | |
| 57 // Check for real value first | |
| 58 HRESULT hr = AccessibleWrap::get_accValue(aVarChild, aValue); | |
| 59 if (FAILED(hr) || *aValue || aVarChild.lVal != CHILDID_SELF) | |
| 60 return hr; | |
| 61 | |
| 62 // If document is being used to create a widget, don't use the URL hack | |
| 63 roles::Role role = Role(); | |
| 64 if (role != roles::DOCUMENT && role != roles::APPLICATION && | |
| 65 role != roles::DIALOG && role != roles::ALERT) | |
| 66 return hr; | |
| 67 | |
| 68 nsAutoString URL; | |
| 69 nsresult rv = GetURL(URL); | |
| 70 if (URL.IsEmpty()) | |
| 71 return S_FALSE; | |
| 72 | |
| 73 *aValue = ::SysAllocStringLen(URL.get(), URL.Length()); | |
| 74 return *aValue ? S_OK : E_OUTOFMEMORY; | |
| 75 | |
| 76 A11Y_TRYBLOCK_END | |
| 77 } | |
| 78 | |
| 79 //////////////////////////////////////////////////////////////////////////////// | |
| 80 // Accessible | |
| 81 | |
| 82 void | |
| 83 DocAccessibleWrap::Shutdown() | |
| 84 { | |
| 85 // Do window emulation specific shutdown if emulation was started. | |
| 86 if (nsWinUtils::IsWindowEmulationStarted()) { | |
| 87 // Destroy window created for root document. | |
| 88 if (mDocFlags & eTabDocument) { | |
| 89 nsWinUtils::sHWNDCache->Remove(mHWND); | |
| 90 ::DestroyWindow(static_cast<HWND>(mHWND)); | |
| 91 } | |
| 92 | |
| 93 mHWND = nullptr; | |
| 94 } | |
| 95 | |
| 96 DocAccessible::Shutdown(); | |
| 97 } | |
| 98 | |
| 99 //////////////////////////////////////////////////////////////////////////////// | |
| 100 // DocAccessible public | |
| 101 | |
| 102 void* | |
| 103 DocAccessibleWrap::GetNativeWindow() const | |
| 104 { | |
| 105 return mHWND ? mHWND : DocAccessible::GetNativeWindow(); | |
| 106 } | |
| 107 | |
| 108 //////////////////////////////////////////////////////////////////////////////// | |
| 109 // DocAccessible protected | |
| 110 | |
| 111 void | |
| 112 DocAccessibleWrap::DoInitialUpdate() | |
| 113 { | |
| 114 DocAccessible::DoInitialUpdate(); | |
| 115 | |
| 116 if (nsWinUtils::IsWindowEmulationStarted()) { | |
| 117 // Create window for tab document. | |
| 118 if (mDocFlags & eTabDocument) { | |
| 119 mozilla::dom::TabChild* tabChild = | |
| 120 mozilla::dom::TabChild::GetFrom(mDocumentNode->GetShell()); | |
| 121 | |
| 122 a11y::RootAccessible* rootDocument = RootAccessible(); | |
| 123 | |
| 124 mozilla::WindowsHandle nativeData = 0; | |
| 125 if (tabChild) | |
| 126 tabChild->SendGetWidgetNativeData(&nativeData); | |
| 127 else | |
| 128 nativeData = reinterpret_cast<mozilla::WindowsHandle>( | |
| 129 rootDocument->GetNativeWindow()); | |
| 130 | |
| 131 bool isActive = true; | |
| 132 int32_t x = CW_USEDEFAULT, y = CW_USEDEFAULT, width = 0, height = 0; | |
| 133 if (Compatibility::IsDolphin()) { | |
| 134 GetBounds(&x, &y, &width, &height); | |
| 135 int32_t rootX = 0, rootY = 0, rootWidth = 0, rootHeight = 0; | |
| 136 rootDocument->GetBounds(&rootX, &rootY, &rootWidth, &rootHeight); | |
| 137 x = rootX - x; | |
| 138 y -= rootY; | |
| 139 | |
| 140 nsCOMPtr<nsISupports> container = mDocumentNode->GetContainer(); | |
| 141 nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(container); | |
| 142 docShell->GetIsActive(&isActive); | |
| 143 } | |
| 144 | |
| 145 HWND parentWnd = reinterpret_cast<HWND>(nativeData); | |
| 146 mHWND = nsWinUtils::CreateNativeWindow(kClassNameTabContent, parentWnd, | |
| 147 x, y, width, height, isActive); | |
| 148 | |
| 149 nsWinUtils::sHWNDCache->Put(mHWND, this); | |
| 150 | |
| 151 } else { | |
| 152 DocAccessible* parentDocument = ParentDocument(); | |
| 153 if (parentDocument) | |
| 154 mHWND = parentDocument->GetNativeWindow(); | |
| 155 } | |
| 156 } | |
| 157 } |
