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comparison: accessible/src/windows/uia/uiaRawElmProvider.cpp
accessible/src/windows/uia/uiaRawElmProvider.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 file, | |
| 5 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "uiaRawElmProvider.h" | |
| 8 | |
| 9 #include "AccessibleWrap.h" | |
| 10 #include "ARIAMap.h" | |
| 11 #include "nsIPersistentProperties2.h" | |
| 12 | |
| 13 using namespace mozilla; | |
| 14 using namespace mozilla::a11y; | |
| 15 | |
| 16 //////////////////////////////////////////////////////////////////////////////// | |
| 17 // uiaRawElmProvider | |
| 18 //////////////////////////////////////////////////////////////////////////////// | |
| 19 | |
| 20 IMPL_IUNKNOWN2(uiaRawElmProvider, | |
| 21 IAccessibleEx, | |
| 22 IRawElementProviderSimple) | |
| 23 | |
| 24 //////////////////////////////////////////////////////////////////////////////// | |
| 25 // IAccessibleEx | |
| 26 | |
| 27 STDMETHODIMP | |
| 28 uiaRawElmProvider::GetObjectForChild(long aIdChild, | |
| 29 __RPC__deref_out_opt IAccessibleEx** aAccEx) | |
| 30 { | |
| 31 A11Y_TRYBLOCK_BEGIN | |
| 32 | |
| 33 if (!aAccEx) | |
| 34 return E_INVALIDARG; | |
| 35 | |
| 36 *aAccEx = nullptr; | |
| 37 | |
| 38 return mAcc->IsDefunct() ? CO_E_OBJNOTCONNECTED : S_OK; | |
| 39 | |
| 40 A11Y_TRYBLOCK_END | |
| 41 } | |
| 42 | |
| 43 STDMETHODIMP | |
| 44 uiaRawElmProvider::GetIAccessiblePair(__RPC__deref_out_opt IAccessible** aAcc, | |
| 45 __RPC__out long* aIdChild) | |
| 46 { | |
| 47 A11Y_TRYBLOCK_BEGIN | |
| 48 | |
| 49 if (!aAcc || !aIdChild) | |
| 50 return E_INVALIDARG; | |
| 51 | |
| 52 *aAcc = nullptr; | |
| 53 *aIdChild = 0; | |
| 54 | |
| 55 if (mAcc->IsDefunct()) | |
| 56 return CO_E_OBJNOTCONNECTED; | |
| 57 | |
| 58 *aIdChild = CHILDID_SELF; | |
| 59 *aAcc = mAcc; | |
| 60 mAcc->AddRef(); | |
| 61 | |
| 62 return S_OK; | |
| 63 | |
| 64 A11Y_TRYBLOCK_END | |
| 65 } | |
| 66 | |
| 67 STDMETHODIMP | |
| 68 uiaRawElmProvider::GetRuntimeId(__RPC__deref_out_opt SAFEARRAY** aRuntimeIds) | |
| 69 { | |
| 70 A11Y_TRYBLOCK_BEGIN | |
| 71 | |
| 72 if (!aRuntimeIds) | |
| 73 return E_INVALIDARG; | |
| 74 | |
| 75 int ids[] = { UiaAppendRuntimeId, static_cast<int>(reinterpret_cast<intptr_t>(mAcc->UniqueID())) }; | |
| 76 *aRuntimeIds = SafeArrayCreateVector(VT_I4, 0, 2); | |
| 77 if (!*aRuntimeIds) | |
| 78 return E_OUTOFMEMORY; | |
| 79 | |
| 80 for (LONG i = 0; i < (LONG)ArrayLength(ids); i++) | |
| 81 SafeArrayPutElement(*aRuntimeIds, &i, (void*)&(ids[i])); | |
| 82 | |
| 83 return S_OK; | |
| 84 | |
| 85 A11Y_TRYBLOCK_END | |
| 86 } | |
| 87 | |
| 88 STDMETHODIMP | |
| 89 uiaRawElmProvider::ConvertReturnedElement(__RPC__in_opt IRawElementProviderSimple* aRawElmProvider, | |
| 90 __RPC__deref_out_opt IAccessibleEx** aAccEx) | |
| 91 { | |
| 92 A11Y_TRYBLOCK_BEGIN | |
| 93 | |
| 94 if (!aRawElmProvider || !aAccEx) | |
| 95 return E_INVALIDARG; | |
| 96 | |
| 97 *aAccEx = nullptr; | |
| 98 | |
| 99 void* instancePtr = nullptr; | |
| 100 HRESULT hr = aRawElmProvider->QueryInterface(IID_IAccessibleEx, &instancePtr); | |
| 101 if (SUCCEEDED(hr)) | |
| 102 *aAccEx = static_cast<IAccessibleEx*>(instancePtr); | |
| 103 | |
| 104 return hr; | |
| 105 | |
| 106 A11Y_TRYBLOCK_END | |
| 107 } | |
| 108 | |
| 109 //////////////////////////////////////////////////////////////////////////////// | |
| 110 // IRawElementProviderSimple | |
| 111 | |
| 112 STDMETHODIMP | |
| 113 uiaRawElmProvider::get_ProviderOptions(__RPC__out enum ProviderOptions* aOptions) | |
| 114 { | |
| 115 A11Y_TRYBLOCK_BEGIN | |
| 116 | |
| 117 if (!aOptions) | |
| 118 return E_INVALIDARG; | |
| 119 | |
| 120 // This method is not used with IAccessibleEx implementations. | |
| 121 *aOptions = ProviderOptions_ServerSideProvider; | |
| 122 return S_OK; | |
| 123 | |
| 124 A11Y_TRYBLOCK_END | |
| 125 } | |
| 126 | |
| 127 STDMETHODIMP | |
| 128 uiaRawElmProvider::GetPatternProvider(PATTERNID aPatternId, | |
| 129 __RPC__deref_out_opt IUnknown** aPatternProvider) | |
| 130 { | |
| 131 A11Y_TRYBLOCK_BEGIN | |
| 132 | |
| 133 if (!aPatternProvider) | |
| 134 return E_INVALIDARG; | |
| 135 | |
| 136 *aPatternProvider = nullptr; | |
| 137 return S_OK; | |
| 138 | |
| 139 A11Y_TRYBLOCK_END | |
| 140 } | |
| 141 | |
| 142 STDMETHODIMP | |
| 143 uiaRawElmProvider::GetPropertyValue(PROPERTYID aPropertyId, | |
| 144 __RPC__out VARIANT* aPropertyValue) | |
| 145 { | |
| 146 A11Y_TRYBLOCK_BEGIN | |
| 147 | |
| 148 if (!aPropertyValue) | |
| 149 return E_INVALIDARG; | |
| 150 | |
| 151 if (mAcc->IsDefunct()) | |
| 152 return CO_E_OBJNOTCONNECTED; | |
| 153 | |
| 154 aPropertyValue->vt = VT_EMPTY; | |
| 155 | |
| 156 switch (aPropertyId) { | |
| 157 // Accelerator Key / shortcut. | |
| 158 case UIA_AcceleratorKeyPropertyId: { | |
| 159 nsAutoString keyString; | |
| 160 | |
| 161 mAcc->KeyboardShortcut().ToString(keyString); | |
| 162 | |
| 163 if (!keyString.IsEmpty()) { | |
| 164 aPropertyValue->vt = VT_BSTR; | |
| 165 aPropertyValue->bstrVal = ::SysAllocString(keyString.get()); | |
| 166 return S_OK; | |
| 167 } | |
| 168 | |
| 169 break; | |
| 170 } | |
| 171 | |
| 172 // Access Key / mneumonic. | |
| 173 case UIA_AccessKeyPropertyId: { | |
| 174 nsAutoString keyString; | |
| 175 | |
| 176 mAcc->AccessKey().ToString(keyString); | |
| 177 | |
| 178 if (!keyString.IsEmpty()) { | |
| 179 aPropertyValue->vt = VT_BSTR; | |
| 180 aPropertyValue->bstrVal = ::SysAllocString(keyString.get()); | |
| 181 return S_OK; | |
| 182 } | |
| 183 | |
| 184 break; | |
| 185 } | |
| 186 | |
| 187 //ARIA Role / shortcut | |
| 188 case UIA_AriaRolePropertyId: { | |
| 189 nsAutoString xmlRoles; | |
| 190 | |
| 191 nsCOMPtr<nsIPersistentProperties> attributes = mAcc->Attributes(); | |
| 192 attributes->GetStringProperty(NS_LITERAL_CSTRING("xml-roles"), xmlRoles); | |
| 193 | |
| 194 if(!xmlRoles.IsEmpty()) { | |
| 195 aPropertyValue->vt = VT_BSTR; | |
| 196 aPropertyValue->bstrVal = ::SysAllocString(xmlRoles.get()); | |
| 197 return S_OK; | |
| 198 } | |
| 199 | |
| 200 break; | |
| 201 } | |
| 202 | |
| 203 //ARIA Properties | |
| 204 case UIA_AriaPropertiesPropertyId: { | |
| 205 nsAutoString ariaProperties; | |
| 206 | |
| 207 aria::AttrIterator attribIter(mAcc->GetContent()); | |
| 208 nsAutoString attribName, attribValue; | |
| 209 while (attribIter.Next(attribName, attribValue)) { | |
| 210 ariaProperties.Append(attribName); | |
| 211 ariaProperties.Append('='); | |
| 212 ariaProperties.Append(attribValue); | |
| 213 ariaProperties.Append(';'); | |
| 214 } | |
| 215 | |
| 216 if (!ariaProperties.IsEmpty()) { | |
| 217 //remove last delimiter: | |
| 218 ariaProperties.Truncate(ariaProperties.Length()-1); | |
| 219 aPropertyValue->vt = VT_BSTR; | |
| 220 aPropertyValue->bstrVal = ::SysAllocString(ariaProperties.get()); | |
| 221 return S_OK; | |
| 222 } | |
| 223 | |
| 224 break; | |
| 225 } | |
| 226 } | |
| 227 | |
| 228 return S_OK; | |
| 229 | |
| 230 A11Y_TRYBLOCK_END | |
| 231 } | |
| 232 | |
| 233 STDMETHODIMP | |
| 234 uiaRawElmProvider::get_HostRawElementProvider(__RPC__deref_out_opt IRawElementProviderSimple** aRawElmProvider) | |
| 235 { | |
| 236 A11Y_TRYBLOCK_BEGIN | |
| 237 | |
| 238 if (!aRawElmProvider) | |
| 239 return E_INVALIDARG; | |
| 240 | |
| 241 // This method is not used with IAccessibleEx implementations. | |
| 242 *aRawElmProvider = nullptr; | |
| 243 return S_OK; | |
| 244 | |
| 245 A11Y_TRYBLOCK_END | |
| 246 } |
