diff options
Diffstat (limited to 'accessible/windows/uia/uiaRawElmProvider.cpp')
| -rw-r--r-- | accessible/windows/uia/uiaRawElmProvider.cpp | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/accessible/windows/uia/uiaRawElmProvider.cpp b/accessible/windows/uia/uiaRawElmProvider.cpp new file mode 100644 index 0000000000..c78dbca7fe --- /dev/null +++ b/accessible/windows/uia/uiaRawElmProvider.cpp @@ -0,0 +1,206 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "uiaRawElmProvider.h" + +#include "AccAttributes.h" +#include "AccessibleWrap.h" +#include "ARIAMap.h" +#include "LocalAccessible-inl.h" + +using namespace mozilla; +using namespace mozilla::a11y; + +//////////////////////////////////////////////////////////////////////////////// +// uiaRawElmProvider +//////////////////////////////////////////////////////////////////////////////// + +IMPL_IUNKNOWN2(uiaRawElmProvider, IAccessibleEx, IRawElementProviderSimple) + +//////////////////////////////////////////////////////////////////////////////// +// IAccessibleEx + +STDMETHODIMP +uiaRawElmProvider::GetObjectForChild( + long aIdChild, __RPC__deref_out_opt IAccessibleEx** aAccEx) { + if (!aAccEx) return E_INVALIDARG; + + *aAccEx = nullptr; + + return mAcc->IsDefunct() ? CO_E_OBJNOTCONNECTED : S_OK; +} + +STDMETHODIMP +uiaRawElmProvider::GetIAccessiblePair(__RPC__deref_out_opt IAccessible** aAcc, + __RPC__out long* aIdChild) { + if (!aAcc || !aIdChild) return E_INVALIDARG; + + *aAcc = nullptr; + *aIdChild = 0; + + if (mAcc->IsDefunct()) return CO_E_OBJNOTCONNECTED; + + *aIdChild = CHILDID_SELF; + RefPtr<IAccessible> copy; + mAcc->GetNativeInterface(getter_AddRefs(copy)); + copy.forget(aAcc); + + return S_OK; +} + +STDMETHODIMP +uiaRawElmProvider::GetRuntimeId(__RPC__deref_out_opt SAFEARRAY** aRuntimeIds) { + if (!aRuntimeIds) return E_INVALIDARG; + + int ids[] = {UiaAppendRuntimeId, + static_cast<int>(reinterpret_cast<intptr_t>(mAcc->UniqueID()))}; + *aRuntimeIds = SafeArrayCreateVector(VT_I4, 0, 2); + if (!*aRuntimeIds) return E_OUTOFMEMORY; + + for (LONG i = 0; i < (LONG)ArrayLength(ids); i++) + SafeArrayPutElement(*aRuntimeIds, &i, (void*)&(ids[i])); + + return S_OK; +} + +STDMETHODIMP +uiaRawElmProvider::ConvertReturnedElement( + __RPC__in_opt IRawElementProviderSimple* aRawElmProvider, + __RPC__deref_out_opt IAccessibleEx** aAccEx) { + if (!aRawElmProvider || !aAccEx) return E_INVALIDARG; + + *aAccEx = nullptr; + + void* instancePtr = nullptr; + HRESULT hr = aRawElmProvider->QueryInterface(IID_IAccessibleEx, &instancePtr); + if (SUCCEEDED(hr)) *aAccEx = static_cast<IAccessibleEx*>(instancePtr); + + return hr; +} + +//////////////////////////////////////////////////////////////////////////////// +// IRawElementProviderSimple + +STDMETHODIMP +uiaRawElmProvider::get_ProviderOptions( + __RPC__out enum ProviderOptions* aOptions) { + if (!aOptions) return E_INVALIDARG; + + // This method is not used with IAccessibleEx implementations. + *aOptions = ProviderOptions_ServerSideProvider; + return S_OK; +} + +STDMETHODIMP +uiaRawElmProvider::GetPatternProvider( + PATTERNID aPatternId, __RPC__deref_out_opt IUnknown** aPatternProvider) { + if (!aPatternProvider) return E_INVALIDARG; + + *aPatternProvider = nullptr; + return S_OK; +} + +STDMETHODIMP +uiaRawElmProvider::GetPropertyValue(PROPERTYID aPropertyId, + __RPC__out VARIANT* aPropertyValue) { + if (!aPropertyValue) return E_INVALIDARG; + + if (mAcc->IsDefunct()) return CO_E_OBJNOTCONNECTED; + + aPropertyValue->vt = VT_EMPTY; + + switch (aPropertyId) { + // Accelerator Key / shortcut. + case UIA_AcceleratorKeyPropertyId: { + nsAutoString keyString; + + mAcc->KeyboardShortcut().ToString(keyString); + + if (!keyString.IsEmpty()) { + aPropertyValue->vt = VT_BSTR; + aPropertyValue->bstrVal = ::SysAllocString(keyString.get()); + return S_OK; + } + + break; + } + + // Access Key / mneumonic. + case UIA_AccessKeyPropertyId: { + nsAutoString keyString; + + mAcc->AccessKey().ToString(keyString); + + if (!keyString.IsEmpty()) { + aPropertyValue->vt = VT_BSTR; + aPropertyValue->bstrVal = ::SysAllocString(keyString.get()); + return S_OK; + } + + break; + } + + // ARIA Role / shortcut + case UIA_AriaRolePropertyId: { + nsAutoString xmlRoles; + + RefPtr<AccAttributes> attributes = mAcc->Attributes(); + attributes->GetAttribute(nsGkAtoms::xmlroles, xmlRoles); + + if (!xmlRoles.IsEmpty()) { + aPropertyValue->vt = VT_BSTR; + aPropertyValue->bstrVal = ::SysAllocString(xmlRoles.get()); + return S_OK; + } + + break; + } + + // ARIA Properties + case UIA_AriaPropertiesPropertyId: { + nsAutoString ariaProperties; + + aria::AttrIterator attribIter(mAcc->GetContent()); + while (attribIter.Next()) { + nsAutoString attribName, attribValue; + nsAutoString value; + attribIter.AttrName()->ToString(attribName); + attribIter.AttrValue(attribValue); + if (StringBeginsWith(attribName, u"aria-"_ns)) { + // Found 'aria-' + attribName.ReplaceLiteral(0, 5, u""); + } + + ariaProperties.Append(attribName); + ariaProperties.Append('='); + ariaProperties.Append(attribValue); + ariaProperties.Append(';'); + } + + if (!ariaProperties.IsEmpty()) { + // remove last delimiter: + ariaProperties.Truncate(ariaProperties.Length() - 1); + aPropertyValue->vt = VT_BSTR; + aPropertyValue->bstrVal = ::SysAllocString(ariaProperties.get()); + return S_OK; + } + + break; + } + } + + return S_OK; +} + +STDMETHODIMP +uiaRawElmProvider::get_HostRawElementProvider( + __RPC__deref_out_opt IRawElementProviderSimple** aRawElmProvider) { + if (!aRawElmProvider) return E_INVALIDARG; + + // This method is not used with IAccessibleEx implementations. + *aRawElmProvider = nullptr; + return S_OK; +} |