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Diffstat (limited to '')
| -rw-r--r-- | accessible/xpcom/xpcAccessible.cpp | 699 |
1 files changed, 699 insertions, 0 deletions
diff --git a/accessible/xpcom/xpcAccessible.cpp b/accessible/xpcom/xpcAccessible.cpp new file mode 100644 index 0000000000..56d738c367 --- /dev/null +++ b/accessible/xpcom/xpcAccessible.cpp @@ -0,0 +1,699 @@ +/* -*- 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 "LocalAccessible-inl.h" +#include "mozilla/a11y/DocAccessibleParent.h" +#include "nsAccessibilityService.h" +#include "AccAttributes.h" +#include "nsAccUtils.h" +#include "nsComponentManagerUtils.h" +#include "nsIAccessibleRelation.h" +#include "nsIAccessibleRole.h" +#include "nsAccessibleRelation.h" +#include "Relation.h" +#include "Role.h" +#include "RootAccessible.h" +#include "xpcAccessibleDocument.h" + +#include "nsIMutableArray.h" +#include "nsPersistentProperties.h" + +#ifdef MOZ_WIDGET_COCOA +# include "xpcAccessibleMacInterface.h" +#endif + +using namespace mozilla::a11y; + +NS_IMETHODIMP +xpcAccessible::GetParent(nsIAccessible** aParent) { + NS_ENSURE_ARG_POINTER(aParent); + *aParent = nullptr; + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + Accessible* parent = IntlGeneric()->Parent(); + NS_IF_ADDREF(*aParent = ToXPC(parent)); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetNextSibling(nsIAccessible** aNextSibling) { + NS_ENSURE_ARG_POINTER(aNextSibling); + *aNextSibling = nullptr; + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aNextSibling = ToXPC(IntlGeneric()->NextSibling())); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetPreviousSibling(nsIAccessible** aPreviousSibling) { + NS_ENSURE_ARG_POINTER(aPreviousSibling); + *aPreviousSibling = nullptr; + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aPreviousSibling = ToXPC(IntlGeneric()->PrevSibling())); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetFirstChild(nsIAccessible** aFirstChild) { + NS_ENSURE_ARG_POINTER(aFirstChild); + *aFirstChild = nullptr; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aFirstChild = ToXPC(IntlGeneric()->FirstChild())); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetLastChild(nsIAccessible** aLastChild) { + NS_ENSURE_ARG_POINTER(aLastChild); + *aLastChild = nullptr; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aLastChild = ToXPC(IntlGeneric()->LastChild())); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetChildCount(int32_t* aChildCount) { + NS_ENSURE_ARG_POINTER(aChildCount); + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + *aChildCount = IntlGeneric()->ChildCount(); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetChildAt(int32_t aChildIndex, nsIAccessible** aChild) { + NS_ENSURE_ARG_POINTER(aChild); + *aChild = nullptr; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + // If child index is negative, then return last child. + // XXX: do we really need this? + if (aChildIndex < 0) aChildIndex = IntlGeneric()->ChildCount() - 1; + + Accessible* child = IntlGeneric()->ChildAt(aChildIndex); + if (!child) return NS_ERROR_INVALID_ARG; + + NS_ADDREF(*aChild = ToXPC(child)); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetChildren(nsIArray** aChildren) { + NS_ENSURE_ARG_POINTER(aChildren); + *aChildren = nullptr; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + nsresult rv = NS_OK; + nsCOMPtr<nsIMutableArray> children = + do_CreateInstance(NS_ARRAY_CONTRACTID, &rv); + NS_ENSURE_SUCCESS(rv, rv); + + uint32_t childCount = IntlGeneric()->ChildCount(); + for (uint32_t childIdx = 0; childIdx < childCount; childIdx++) { + Accessible* child = IntlGeneric()->ChildAt(childIdx); + children->AppendElement(static_cast<nsIAccessible*>(ToXPC(child))); + } + + children.forget(aChildren); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetIndexInParent(int32_t* aIndexInParent) { + NS_ENSURE_ARG_POINTER(aIndexInParent); + *aIndexInParent = -1; + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + *aIndexInParent = IntlGeneric()->IndexInParent(); + + return *aIndexInParent != -1 ? NS_OK : NS_ERROR_FAILURE; +} + +NS_IMETHODIMP +xpcAccessible::GetUniqueID(int64_t* aUniqueID) { + NS_ENSURE_ARG_POINTER(aUniqueID); + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + if (IntlGeneric()->IsLocal()) { + *aUniqueID = reinterpret_cast<uintptr_t>(Intl()->UniqueID()); + } else if (IntlGeneric()->IsRemote()) { + *aUniqueID = IntlGeneric()->AsRemote()->ID(); + } + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetDOMNode(nsINode** aDOMNode) { + NS_ENSURE_ARG_POINTER(aDOMNode); + *aDOMNode = nullptr; + + if (!Intl()) return NS_ERROR_FAILURE; + + nsCOMPtr<nsINode> node = Intl()->GetNode(); + node.forget(aDOMNode); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetId(nsAString& aID) { + if (!IntlGeneric()) { + return NS_ERROR_FAILURE; + } + + RemoteAccessible* proxy = IntlGeneric()->AsRemote(); + if (!proxy) { + return NS_ERROR_FAILURE; + } + + nsString id; + proxy->DOMNodeID(id); + aID.Assign(id); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetDocument(nsIAccessibleDocument** aDocument) { + NS_ENSURE_ARG_POINTER(aDocument); + *aDocument = nullptr; + + if (!Intl()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aDocument = ToXPCDocument(Intl()->Document())); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetRootDocument(nsIAccessibleDocument** aRootDocument) { + NS_ENSURE_ARG_POINTER(aRootDocument); + *aRootDocument = nullptr; + + if (!Intl()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aRootDocument = ToXPCDocument(Intl()->RootAccessible())); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetRole(uint32_t* aRole) { + NS_ENSURE_ARG_POINTER(aRole); + *aRole = nsIAccessibleRole::ROLE_NOTHING; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + *aRole = IntlGeneric()->Role(); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetState(uint32_t* aState, uint32_t* aExtraState) { + NS_ENSURE_ARG_POINTER(aState); + + Accessible* acc = IntlGeneric(); + if (acc) { + nsAccUtils::To32States(acc->State(), aState, aExtraState); + } else { + nsAccUtils::To32States(states::DEFUNCT, aState, aExtraState); + } + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetName(nsAString& aName) { + aName.Truncate(); + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + nsAutoString name; + IntlGeneric()->Name(name); + + aName.Assign(name); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetDescription(nsAString& aDescription) { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + nsAutoString desc; + IntlGeneric()->Description(desc); + + aDescription.Assign(desc); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetLanguage(nsAString& aLanguage) { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + nsAutoString lang; + IntlGeneric()->Language(lang); + + aLanguage.Assign(lang); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetValue(nsAString& aValue) { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + nsAutoString value; + IntlGeneric()->Value(value); + + aValue.Assign(value); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetAccessKey(nsAString& aAccessKey) { + aAccessKey.Truncate(); + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + IntlGeneric()->AccessKey().ToString(aAccessKey); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetKeyboardShortcut(nsAString& aKeyBinding) { + aKeyBinding.Truncate(); + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + if (IntlGeneric()->IsRemote()) { + return NS_ERROR_NOT_IMPLEMENTED; + } + Intl()->KeyboardShortcut().ToString(aKeyBinding); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetAttributes(nsIPersistentProperties** aAttributes) { + NS_ENSURE_ARG_POINTER(aAttributes); + *aAttributes = nullptr; + + if (!IntlGeneric()) { + return NS_ERROR_FAILURE; + } + + RefPtr<nsPersistentProperties> props = new nsPersistentProperties(); + + RefPtr<AccAttributes> attributes = IntlGeneric()->Attributes(); + + nsAutoString unused; + for (auto iter : *attributes) { + nsAutoString name; + iter.NameAsString(name); + + nsAutoString value; + iter.ValueAsString(value); + + props->SetStringProperty(NS_ConvertUTF16toUTF8(name), value, unused); + } + + props.forget(aAttributes); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetCache(nsIPersistentProperties** aCachedFields) { + NS_ENSURE_ARG_POINTER(aCachedFields); + *aCachedFields = nullptr; + + if (!IntlGeneric()) { + return NS_ERROR_FAILURE; + } + + RefPtr<nsPersistentProperties> props = new nsPersistentProperties(); + if (RemoteAccessible* remoteAcc = IntlGeneric()->AsRemote()) { + if (RefPtr<AccAttributes> cachedFields = remoteAcc->mCachedFields) { + nsAutoString unused; + for (auto iter : *cachedFields) { + nsAutoString name; + iter.NameAsString(name); + + nsAutoString value; + iter.ValueAsString(value); + + props->SetStringProperty(NS_ConvertUTF16toUTF8(name), value, unused); + } + } + } + + props.forget(aCachedFields); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetNativeInterface(nsISupports** aNativeInterface) { +#ifdef MOZ_WIDGET_COCOA + NS_ENSURE_ARG_POINTER(aNativeInterface); + + // We don't cache or store this instance anywhere so each get returns a + // different instance. So `acc.nativeInterface != acc.nativeInterface`. This + // just seems simpler and more robust for now. + nsCOMPtr<nsISupports> macIface = static_cast<nsIAccessibleMacInterface*>( + new xpcAccessibleMacInterface(IntlGeneric())); + macIface.swap(*aNativeInterface); + + return NS_OK; +#else + return NS_ERROR_NOT_IMPLEMENTED; +#endif +} + +NS_IMETHODIMP +xpcAccessible::GetBounds(int32_t* aX, int32_t* aY, int32_t* aWidth, + int32_t* aHeight) { + NS_ENSURE_ARG_POINTER(aX); + *aX = 0; + NS_ENSURE_ARG_POINTER(aY); + *aY = 0; + NS_ENSURE_ARG_POINTER(aWidth); + *aWidth = 0; + NS_ENSURE_ARG_POINTER(aHeight); + *aHeight = 0; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + LayoutDeviceIntRect rect = IntlGeneric()->Bounds(); + rect.GetRect(aX, aY, aWidth, aHeight); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetBoundsInCSSPixels(int32_t* aX, int32_t* aY, int32_t* aWidth, + int32_t* aHeight) { + NS_ENSURE_ARG_POINTER(aX); + *aX = 0; + NS_ENSURE_ARG_POINTER(aY); + *aY = 0; + NS_ENSURE_ARG_POINTER(aWidth); + *aWidth = 0; + NS_ENSURE_ARG_POINTER(aHeight); + *aHeight = 0; + + if (!IntlGeneric()) { + return NS_ERROR_FAILURE; + } + + nsIntRect rect = IntlGeneric()->BoundsInCSSPixels(); + rect.GetRect(aX, aY, aWidth, aHeight); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GroupPosition(int32_t* aGroupLevel, + int32_t* aSimilarItemsInGroup, + int32_t* aPositionInGroup) { + NS_ENSURE_ARG_POINTER(aGroupLevel); + NS_ENSURE_ARG_POINTER(aSimilarItemsInGroup); + NS_ENSURE_ARG_POINTER(aPositionInGroup); + + GroupPos groupPos = IntlGeneric()->GroupPosition(); + + *aGroupLevel = groupPos.level; + *aSimilarItemsInGroup = groupPos.setSize; + *aPositionInGroup = groupPos.posInSet; + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetRelationByType(uint32_t aType, + nsIAccessibleRelation** aRelation) { + NS_ENSURE_ARG_POINTER(aRelation); + *aRelation = nullptr; + + NS_ENSURE_ARG(aType <= static_cast<uint32_t>(RelationType::LAST)); + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + Relation rel = + IntlGeneric()->RelationByType(static_cast<RelationType>(aType)); + NS_ADDREF(*aRelation = new nsAccessibleRelation(aType, &rel)); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetRelations(nsIArray** aRelations) { + NS_ENSURE_ARG_POINTER(aRelations); + *aRelations = nullptr; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + nsCOMPtr<nsIMutableArray> relations = do_CreateInstance(NS_ARRAY_CONTRACTID); + NS_ENSURE_TRUE(relations, NS_ERROR_OUT_OF_MEMORY); + + static const uint32_t relationTypes[] = { + nsIAccessibleRelation::RELATION_LABELLED_BY, + nsIAccessibleRelation::RELATION_LABEL_FOR, + nsIAccessibleRelation::RELATION_DESCRIBED_BY, + nsIAccessibleRelation::RELATION_DESCRIPTION_FOR, + nsIAccessibleRelation::RELATION_NODE_CHILD_OF, + nsIAccessibleRelation::RELATION_NODE_PARENT_OF, + nsIAccessibleRelation::RELATION_CONTROLLED_BY, + nsIAccessibleRelation::RELATION_CONTROLLER_FOR, + nsIAccessibleRelation::RELATION_FLOWS_TO, + nsIAccessibleRelation::RELATION_FLOWS_FROM, + nsIAccessibleRelation::RELATION_MEMBER_OF, + nsIAccessibleRelation::RELATION_SUBWINDOW_OF, + nsIAccessibleRelation::RELATION_EMBEDS, + nsIAccessibleRelation::RELATION_EMBEDDED_BY, + nsIAccessibleRelation::RELATION_POPUP_FOR, + nsIAccessibleRelation::RELATION_PARENT_WINDOW_OF, + nsIAccessibleRelation::RELATION_DEFAULT_BUTTON, + nsIAccessibleRelation::RELATION_CONTAINING_DOCUMENT, + nsIAccessibleRelation::RELATION_CONTAINING_TAB_PANE, + nsIAccessibleRelation::RELATION_CONTAINING_APPLICATION}; + + for (uint32_t idx = 0; idx < ArrayLength(relationTypes); idx++) { + nsCOMPtr<nsIAccessibleRelation> relation; + nsresult rv = + GetRelationByType(relationTypes[idx], getter_AddRefs(relation)); + + if (NS_SUCCEEDED(rv) && relation) { + uint32_t targets = 0; + relation->GetTargetsCount(&targets); + if (targets) relations->AppendElement(relation); + } + } + + NS_ADDREF(*aRelations = relations); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetFocusedChild(nsIAccessible** aChild) { + NS_ENSURE_ARG_POINTER(aChild); + *aChild = nullptr; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aChild = ToXPC(IntlGeneric()->FocusedChild())); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetChildAtPoint(int32_t aX, int32_t aY, + nsIAccessible** aAccessible) { + NS_ENSURE_ARG_POINTER(aAccessible); + *aAccessible = nullptr; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aAccessible = ToXPC(IntlGeneric()->ChildAtPoint( + aX, aY, Accessible::EWhichChildAtPoint::DirectChild))); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetDeepestChildAtPoint(int32_t aX, int32_t aY, + nsIAccessible** aAccessible) { + NS_ENSURE_ARG_POINTER(aAccessible); + *aAccessible = nullptr; + + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + NS_IF_ADDREF(*aAccessible = ToXPC(IntlGeneric()->ChildAtPoint( + aX, aY, Accessible::EWhichChildAtPoint::DeepestChild))); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetDeepestChildAtPointInProcess(int32_t aX, int32_t aY, + nsIAccessible** aAccessible) { + NS_ENSURE_ARG_POINTER(aAccessible); + *aAccessible = nullptr; + + Accessible* generic = IntlGeneric(); + if (!generic || generic->IsRemote()) { + return NS_ERROR_FAILURE; + } + + NS_IF_ADDREF(*aAccessible = ToXPC(Intl()->LocalChildAtPoint( + aX, aY, Accessible::EWhichChildAtPoint::DeepestChild))); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::SetSelected(bool aSelect) { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + IntlGeneric()->SetSelected(aSelect); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::TakeSelection() { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + IntlGeneric()->TakeSelection(); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::TakeFocus() { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + IntlGeneric()->TakeFocus(); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetActionCount(uint8_t* aActionCount) { + NS_ENSURE_ARG_POINTER(aActionCount); + *aActionCount = 0; + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + *aActionCount = IntlGeneric()->ActionCount(); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetActionName(uint8_t aIndex, nsAString& aName) { + aName.Truncate(); + + if (!IntlGeneric()) { + return NS_ERROR_FAILURE; + } + + if (aIndex >= IntlGeneric()->ActionCount()) { + return NS_ERROR_INVALID_ARG; + } + + nsAutoString name; + IntlGeneric()->ActionNameAt(aIndex, name); + + aName.Assign(name); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetActionDescription(uint8_t aIndex, nsAString& aDescription) { + aDescription.Truncate(); + + if (!IntlGeneric()) { + return NS_ERROR_FAILURE; + } + + if (aIndex >= IntlGeneric()->ActionCount()) { + return NS_ERROR_INVALID_ARG; + } + + nsAutoString description; + IntlGeneric()->ActionDescriptionAt(aIndex, description); + + aDescription.Assign(description); + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::DoAction(uint8_t aIndex) { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + return IntlGeneric()->DoAction(aIndex) ? NS_OK : NS_ERROR_INVALID_ARG; +} + +NS_IMETHODIMP +xpcAccessible::ScrollTo(uint32_t aHow) { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + IntlGeneric()->ScrollTo(aHow); + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::ScrollToPoint(uint32_t aCoordinateType, int32_t aX, int32_t aY) { + if (!IntlGeneric()) return NS_ERROR_FAILURE; + + if (RemoteAccessible* proxy = IntlGeneric()->AsRemote()) { +#if defined(XP_WIN) + return NS_ERROR_NOT_IMPLEMENTED; +#else + proxy->ScrollToPoint(aCoordinateType, aX, aY); +#endif + } else { + Intl()->ScrollToPoint(aCoordinateType, aX, aY); + } + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::Announce(const nsAString& aAnnouncement, uint16_t aPriority) { + if (RemoteAccessible* proxy = IntlGeneric()->AsRemote()) { +#if defined(XP_WIN) + return NS_ERROR_NOT_IMPLEMENTED; +#else + nsString announcement(aAnnouncement); + proxy->Announce(announcement, aPriority); +#endif + } else { + Intl()->Announce(aAnnouncement, aPriority); + } + + return NS_OK; +} + +NS_IMETHODIMP +xpcAccessible::GetComputedARIARole(nsAString& aRole) { + if (!IntlGeneric()) { + return NS_ERROR_FAILURE; + } + + nsStaticAtom* ariaRole = IntlGeneric()->ComputedARIARole(); + if (ariaRole) { + ariaRole->ToString(aRole); + } + + return NS_OK; +} |