diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:13:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:13:27 +0000 |
commit | 40a355a42d4a9444dc753c04c6608dade2f06a23 (patch) | |
tree | 871fc667d2de662f171103ce5ec067014ef85e61 /accessible/windows/uia/uiaRawElmProvider.cpp | |
parent | Adding upstream version 124.0.1. (diff) | |
download | firefox-upstream/125.0.1.tar.xz firefox-upstream/125.0.1.zip |
Adding upstream version 125.0.1.upstream/125.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'accessible/windows/uia/uiaRawElmProvider.cpp')
-rw-r--r-- | accessible/windows/uia/uiaRawElmProvider.cpp | 132 |
1 files changed, 121 insertions, 11 deletions
diff --git a/accessible/windows/uia/uiaRawElmProvider.cpp b/accessible/windows/uia/uiaRawElmProvider.cpp index c78dbca7fe..881ed22277 100644 --- a/accessible/windows/uia/uiaRawElmProvider.cpp +++ b/accessible/windows/uia/uiaRawElmProvider.cpp @@ -10,6 +10,9 @@ #include "AccessibleWrap.h" #include "ARIAMap.h" #include "LocalAccessible-inl.h" +#include "mozilla/a11y/RemoteAccessible.h" +#include "MsaaAccessible.h" +#include "nsTextEquivUtils.h" using namespace mozilla; using namespace mozilla::a11y; @@ -18,6 +21,23 @@ using namespace mozilla::a11y; // uiaRawElmProvider //////////////////////////////////////////////////////////////////////////////// +Accessible* uiaRawElmProvider::Acc() { + return static_cast<MsaaAccessible*>(this)->Acc(); +} + +// IUnknown + +// Because uiaRawElmProvider inherits multiple COM interfaces (and thus multiple +// IUnknowns), we need to explicitly implement AddRef and Release to make +// our QueryInterface implementation (IMPL_IUNKNOWN2) happy. +ULONG STDMETHODCALLTYPE uiaRawElmProvider::AddRef() { + return static_cast<MsaaAccessible*>(this)->AddRef(); +} + +ULONG STDMETHODCALLTYPE uiaRawElmProvider::Release() { + return static_cast<MsaaAccessible*>(this)->Release(); +} + IMPL_IUNKNOWN2(uiaRawElmProvider, IAccessibleEx, IRawElementProviderSimple) //////////////////////////////////////////////////////////////////////////////// @@ -30,7 +50,7 @@ uiaRawElmProvider::GetObjectForChild( *aAccEx = nullptr; - return mAcc->IsDefunct() ? CO_E_OBJNOTCONNECTED : S_OK; + return Acc() ? S_OK : CO_E_OBJNOTCONNECTED; } STDMETHODIMP @@ -41,11 +61,12 @@ uiaRawElmProvider::GetIAccessiblePair(__RPC__deref_out_opt IAccessible** aAcc, *aAcc = nullptr; *aIdChild = 0; - if (mAcc->IsDefunct()) return CO_E_OBJNOTCONNECTED; + if (!Acc()) { + return CO_E_OBJNOTCONNECTED; + } *aIdChild = CHILDID_SELF; - RefPtr<IAccessible> copy; - mAcc->GetNativeInterface(getter_AddRefs(copy)); + RefPtr<IAccessible> copy = static_cast<MsaaAccessible*>(this); copy.forget(aAcc); return S_OK; @@ -54,9 +75,12 @@ uiaRawElmProvider::GetIAccessiblePair(__RPC__deref_out_opt IAccessible** aAcc, STDMETHODIMP uiaRawElmProvider::GetRuntimeId(__RPC__deref_out_opt SAFEARRAY** aRuntimeIds) { if (!aRuntimeIds) return E_INVALIDARG; + Accessible* acc = Acc(); + if (!acc) { + return CO_E_OBJNOTCONNECTED; + } - int ids[] = {UiaAppendRuntimeId, - static_cast<int>(reinterpret_cast<intptr_t>(mAcc->UniqueID()))}; + int ids[] = {UiaAppendRuntimeId, MsaaAccessible::GetChildIDFor(acc)}; *aRuntimeIds = SafeArrayCreateVector(VT_I4, 0, 2); if (!*aRuntimeIds) return E_OUTOFMEMORY; @@ -108,16 +132,24 @@ uiaRawElmProvider::GetPropertyValue(PROPERTYID aPropertyId, __RPC__out VARIANT* aPropertyValue) { if (!aPropertyValue) return E_INVALIDARG; - if (mAcc->IsDefunct()) return CO_E_OBJNOTCONNECTED; + Accessible* acc = Acc(); + if (!acc) { + return CO_E_OBJNOTCONNECTED; + } + LocalAccessible* localAcc = acc->AsLocal(); aPropertyValue->vt = VT_EMPTY; switch (aPropertyId) { // Accelerator Key / shortcut. case UIA_AcceleratorKeyPropertyId: { + if (!localAcc) { + // KeyboardShortcut is only currently relevant for LocalAccessible. + break; + } nsAutoString keyString; - mAcc->KeyboardShortcut().ToString(keyString); + localAcc->KeyboardShortcut().ToString(keyString); if (!keyString.IsEmpty()) { aPropertyValue->vt = VT_BSTR; @@ -132,7 +164,7 @@ uiaRawElmProvider::GetPropertyValue(PROPERTYID aPropertyId, case UIA_AccessKeyPropertyId: { nsAutoString keyString; - mAcc->AccessKey().ToString(keyString); + acc->AccessKey().ToString(keyString); if (!keyString.IsEmpty()) { aPropertyValue->vt = VT_BSTR; @@ -147,7 +179,7 @@ uiaRawElmProvider::GetPropertyValue(PROPERTYID aPropertyId, case UIA_AriaRolePropertyId: { nsAutoString xmlRoles; - RefPtr<AccAttributes> attributes = mAcc->Attributes(); + RefPtr<AccAttributes> attributes = acc->Attributes(); attributes->GetAttribute(nsGkAtoms::xmlroles, xmlRoles); if (!xmlRoles.IsEmpty()) { @@ -161,9 +193,16 @@ uiaRawElmProvider::GetPropertyValue(PROPERTYID aPropertyId, // ARIA Properties case UIA_AriaPropertiesPropertyId: { + if (!localAcc) { + // XXX Implement a unified version of this. We don't cache explicit + // values for many ARIA attributes in RemoteAccessible; e.g. we use the + // checked state rather than caching aria-checked:true. Thus, a unified + // implementation will need to work with State(), etc. + break; + } nsAutoString ariaProperties; - aria::AttrIterator attribIter(mAcc->GetContent()); + aria::AttrIterator attribIter(localAcc->GetContent()); while (attribIter.Next()) { nsAutoString attribName, attribValue; nsAutoString value; @@ -190,6 +229,12 @@ uiaRawElmProvider::GetPropertyValue(PROPERTYID aPropertyId, break; } + + case UIA_IsControlElementPropertyId: + case UIA_IsContentElementPropertyId: + aPropertyValue->vt = VT_BOOL; + aPropertyValue->boolVal = IsControl() ? VARIANT_TRUE : VARIANT_FALSE; + return S_OK; } return S_OK; @@ -204,3 +249,68 @@ uiaRawElmProvider::get_HostRawElementProvider( *aRawElmProvider = nullptr; return S_OK; } + +// Private methods + +bool uiaRawElmProvider::IsControl() { + // UIA provides multiple views of the tree: raw, control and content. The + // control and content views should only contain elements which a user cares + // about when navigating. + Accessible* acc = Acc(); + MOZ_ASSERT(acc); + if (acc->IsTextLeaf()) { + // If an ancestor control allows the name to be generated from content, do + // not expose this text leaf as a control. Otherwise, the user will see the + // text twice: once as the label of the control and once for the text leaf. + for (Accessible* ancestor = acc->Parent(); ancestor && !ancestor->IsDoc(); + ancestor = ancestor->Parent()) { + if (nsTextEquivUtils::HasNameRule(ancestor, eNameFromSubtreeRule)) { + return false; + } + } + return true; + } + + if (acc->HasNumericValue() || acc->ActionCount() > 0) { + return true; + } + uint64_t state = acc->State(); + if (state & states::FOCUSABLE) { + return true; + } + if (state & states::EDITABLE) { + Accessible* parent = acc->Parent(); + if (parent && !(parent->State() & states::EDITABLE)) { + // This is the root of a rich editable control. + return true; + } + } + + // Don't treat generic or text containers as controls unless they have a name + // or description. + switch (acc->Role()) { + case roles::EMPHASIS: + case roles::MARK: + case roles::PARAGRAPH: + case roles::SECTION: + case roles::STRONG: + case roles::SUBSCRIPT: + case roles::SUPERSCRIPT: + case roles::TEXT: + case roles::TEXT_CONTAINER: { + if (!acc->NameIsEmpty()) { + return true; + } + nsAutoString text; + acc->Description(text); + if (!text.IsEmpty()) { + return true; + } + return false; + } + default: + break; + } + + return true; +} |