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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "AccessibleNode.h"
#include "mozilla/dom/AccessibleNodeBinding.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/DOMStringList.h"
#include "mozilla/StaticPrefs_accessibility.h"
#include "nsContentUtils.h"
#include "nsIPersistentProperties2.h"
#include "nsISimpleEnumerator.h"
#include "Accessible-inl.h"
#include "nsAccessibilityService.h"
#include "DocAccessible.h"
#include "mozilla/dom/Document.h" // for inline nsINode::GetParentObject
#include "mozilla/dom/ToJSValue.h"
using namespace mozilla;
using namespace mozilla::a11y;
using namespace mozilla::dom;
bool AccessibleNode::IsAOMEnabled(JSContext* aCx, JSObject* /*unused*/) {
return nsContentUtils::IsSystemCaller(aCx) ||
StaticPrefs::accessibility_AOM_enabled();
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(AccessibleNode, mRelationProperties,
mIntl, mDOMNode, mStates)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AccessibleNode)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(AccessibleNode)
NS_IMPL_CYCLE_COLLECTING_RELEASE(AccessibleNode)
AccessibleNode::AccessibleNode(nsINode* aNode)
: mDoubleProperties(3),
mIntProperties(3),
mUIntProperties(6),
mBooleanProperties(0),
mRelationProperties(3),
mStringProperties(16),
mDOMNode(aNode) {
nsAccessibilityService* accService = GetOrCreateAccService();
if (!accService) {
return;
}
DocAccessible* doc = accService->GetDocAccessible(mDOMNode->OwnerDoc());
if (doc) {
mIntl = doc->GetAccessible(mDOMNode);
}
}
AccessibleNode::~AccessibleNode() {}
/* virtual */
JSObject* AccessibleNode::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return AccessibleNode_Binding::Wrap(aCx, this, aGivenProto);
}
/* virtual */
ParentObject AccessibleNode::GetParentObject() const {
return mDOMNode->GetParentObject();
}
void AccessibleNode::GetComputedRole(nsAString& aRole) {
if (mIntl) {
nsAccessibilityService* accService = GetOrCreateAccService();
if (accService) {
accService->GetStringRole(mIntl->Role(), aRole);
return;
}
}
aRole.AssignLiteral("unknown");
}
void AccessibleNode::GetStates(nsTArray<nsString>& aStates) {
nsAccessibilityService* accService = GetOrCreateAccService();
if (!mIntl || !accService) {
aStates.AppendElement(u"defunct"_ns);
return;
}
if (mStates) {
aStates = mStates->StringArray().Clone();
return;
}
mStates = accService->GetStringStates(mIntl->State());
aStates = mStates->StringArray().Clone();
}
void AccessibleNode::GetAttributes(nsTArray<nsString>& aAttributes) {
if (!mIntl) {
return;
}
nsCOMPtr<nsIPersistentProperties> attrs = mIntl->Attributes();
nsCOMPtr<nsISimpleEnumerator> props;
attrs->Enumerate(getter_AddRefs(props));
bool hasMore = false;
while (NS_SUCCEEDED(props->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> supp;
props->GetNext(getter_AddRefs(supp));
nsCOMPtr<nsIPropertyElement> prop(do_QueryInterface(supp));
nsAutoCString attr;
prop->GetKey(attr);
aAttributes.AppendElement(NS_ConvertUTF8toUTF16(attr));
}
}
bool AccessibleNode::Is(const Sequence<nsString>& aFlavors) {
nsAccessibilityService* accService = GetOrCreateAccService();
if (!mIntl || !accService) {
for (const auto& flavor : aFlavors) {
if (!flavor.EqualsLiteral("unknown") &&
!flavor.EqualsLiteral("defunct")) {
return false;
}
}
return true;
}
nsAutoString role;
accService->GetStringRole(mIntl->Role(), role);
if (!mStates) {
mStates = accService->GetStringStates(mIntl->State());
}
for (const auto& flavor : aFlavors) {
if (!flavor.Equals(role) && !mStates->Contains(flavor)) {
return false;
}
}
return true;
}
bool AccessibleNode::Has(const Sequence<nsString>& aAttributes) {
if (!mIntl) {
return false;
}
nsCOMPtr<nsIPersistentProperties> attrs = mIntl->Attributes();
for (const auto& attr : aAttributes) {
bool has = false;
attrs->Has(NS_ConvertUTF16toUTF8(attr).get(), &has);
if (!has) {
return false;
}
}
return true;
}
void AccessibleNode::Get(JSContext* aCX, const nsAString& aAttribute,
JS::MutableHandle<JS::Value> aValue,
ErrorResult& aRv) {
if (!mIntl) {
aRv.ThrowInvalidStateError("No attributes available");
return;
}
nsCOMPtr<nsIPersistentProperties> attrs = mIntl->Attributes();
nsAutoString value;
attrs->GetStringProperty(NS_ConvertUTF16toUTF8(aAttribute), value);
if (!ToJSValue(aCX, value, aValue)) {
aRv.NoteJSContextException(aCX);
return;
}
}
nsINode* AccessibleNode::GetDOMNode() { return mDOMNode; }
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