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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=40: */
/* 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/. */
#ifndef A11Y_AOM_ACCESSIBLENODE_H
#define A11Y_AOM_ACCESSIBLENODE_H
#include "nsDataHashtable.h"
#include "nsRefPtrHashtable.h"
#include "nsWrapperCache.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/DOMString.h"
#include "mozilla/dom/Nullable.h"
class nsINode;
namespace mozilla {
class ErrorResult;
namespace a11y {
class Accessible;
}
namespace dom {
class DOMStringList;
struct ParentObject;
#define ANODE_ENUM(name) e##name,
#define ANODE_FUNC(typeName, type, name) \
dom::Nullable<type> Get##name() { \
return GetProperty(AOM##typeName##Property::e##name); \
} \
\
void Set##name(const dom::Nullable<type>& a##name) { \
SetProperty(AOM##typeName##Property::e##name, a##name); \
}
#define ANODE_STRING_FUNC(name) \
void Get##name(nsAString& a##name) { \
return GetProperty(AOMStringProperty::e##name, a##name); \
} \
\
void Set##name(const nsAString& a##name) { \
SetProperty(AOMStringProperty::e##name, a##name); \
}
#define ANODE_RELATION_FUNC(name) \
already_AddRefed<AccessibleNode> Get##name() { \
return GetProperty(AOMRelationProperty::e##name); \
} \
\
void Set##name(AccessibleNode* a##name) { \
SetProperty(AOMRelationProperty::e##name, a##name); \
}
#define ANODE_PROPS(typeName, type, ...) \
enum class AOM##typeName##Property{ \
MOZ_FOR_EACH(ANODE_ENUM, (), (__VA_ARGS__))}; \
MOZ_FOR_EACH(ANODE_FUNC, (typeName, type, ), (__VA_ARGS__))
#define ANODE_STRING_PROPS(...) \
enum class AOMStringProperty { \
MOZ_FOR_EACH(ANODE_ENUM, (), (__VA_ARGS__)) \
}; \
MOZ_FOR_EACH(ANODE_STRING_FUNC, (), (__VA_ARGS__))
#define ANODE_RELATION_PROPS(...) \
enum class AOMRelationProperty { \
MOZ_FOR_EACH(ANODE_ENUM, (), (__VA_ARGS__)) \
}; \
MOZ_FOR_EACH(ANODE_RELATION_FUNC, (), (__VA_ARGS__))
#define ANODE_ACCESSOR_MUTATOR(typeName, type, defVal) \
nsDataHashtable<nsUint32HashKey, type> m##typeName##Properties; \
\
dom::Nullable<type> GetProperty(AOM##typeName##Property aProperty) { \
type value = defVal; \
if (m##typeName##Properties.Get(static_cast<int>(aProperty), &value)) { \
return dom::Nullable<type>(value); \
} \
return dom::Nullable<type>(); \
} \
\
void SetProperty(AOM##typeName##Property aProperty, \
const dom::Nullable<type>& aValue) { \
if (aValue.IsNull()) { \
m##typeName##Properties.Remove(static_cast<int>(aProperty)); \
} else { \
m##typeName##Properties.Put(static_cast<int>(aProperty), \
aValue.Value()); \
} \
}
class AccessibleNode : public nsISupports, public nsWrapperCache {
public:
explicit AccessibleNode(nsINode* aNode);
NS_DECL_CYCLE_COLLECTING_ISUPPORTS;
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(AccessibleNode);
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
dom::ParentObject GetParentObject() const;
void GetComputedRole(nsAString& aRole);
void GetStates(nsTArray<nsString>& aStates);
void GetAttributes(nsTArray<nsString>& aAttributes);
nsINode* GetDOMNode();
bool Is(const Sequence<nsString>& aFlavors);
bool Has(const Sequence<nsString>& aAttributes);
void Get(JSContext* cx, const nsAString& aAttribute,
JS::MutableHandle<JS::Value> aValue, ErrorResult& aRv);
static bool IsAOMEnabled(JSContext*, JSObject*);
ANODE_STRING_PROPS(Autocomplete, Checked, Current, HasPopUp, Invalid,
KeyShortcuts, Label, Live, Orientation, Placeholder,
Pressed, Relevant, Role, RoleDescription, Sort, ValueText)
ANODE_PROPS(Boolean, bool, Atomic, Busy, Disabled, Expanded, Hidden, Modal,
Multiline, Multiselectable, ReadOnly, Required, Selected)
ANODE_PROPS(UInt, uint32_t, ColIndex, ColSpan, Level, PosInSet, RowIndex,
RowSpan)
ANODE_PROPS(Int, int32_t, ColCount, RowCount, SetSize)
ANODE_PROPS(Double, double, ValueMax, ValueMin, ValueNow)
ANODE_RELATION_PROPS(ActiveDescendant, Details, ErrorMessage)
protected:
AccessibleNode(const AccessibleNode& aCopy) = delete;
AccessibleNode& operator=(const AccessibleNode& aCopy) = delete;
virtual ~AccessibleNode();
void GetProperty(AOMStringProperty aProperty, nsAString& aRetval) {
nsString data;
if (!mStringProperties.Get(static_cast<int>(aProperty), &data)) {
SetDOMStringToNull(data);
}
aRetval = data;
}
void SetProperty(AOMStringProperty aProperty, const nsAString& aValue) {
if (DOMStringIsNull(aValue)) {
mStringProperties.Remove(static_cast<int>(aProperty));
} else {
nsString value(aValue);
mStringProperties.Put(static_cast<int>(aProperty), value);
}
}
dom::Nullable<bool> GetProperty(AOMBooleanProperty aProperty) {
int num = static_cast<int>(aProperty);
if (mBooleanProperties & (1U << (2 * num))) {
bool data = static_cast<bool>(mBooleanProperties & (1U << (2 * num + 1)));
return dom::Nullable<bool>(data);
}
return dom::Nullable<bool>();
}
void SetProperty(AOMBooleanProperty aProperty,
const dom::Nullable<bool>& aValue) {
int num = static_cast<int>(aProperty);
if (aValue.IsNull()) {
mBooleanProperties &= ~(1U << (2 * num));
} else {
mBooleanProperties |= (1U << (2 * num));
mBooleanProperties =
(aValue.Value() ? mBooleanProperties | (1U << (2 * num + 1))
: mBooleanProperties & ~(1U << (2 * num + 1)));
}
}
ANODE_ACCESSOR_MUTATOR(Double, double, 0.0)
ANODE_ACCESSOR_MUTATOR(Int, int32_t, 0)
ANODE_ACCESSOR_MUTATOR(UInt, uint32_t, 0)
already_AddRefed<AccessibleNode> GetProperty(AOMRelationProperty aProperty) {
return mRelationProperties.Get(static_cast<int>(aProperty));
}
void SetProperty(AOMRelationProperty aProperty, AccessibleNode* aValue) {
if (!aValue) {
mRelationProperties.Remove(static_cast<int>(aProperty));
} else {
mRelationProperties.Put(static_cast<int>(aProperty), RefPtr{aValue});
}
}
// The 2k'th bit indicates whether the k'th boolean property is used(1) or
// not(0) and 2k+1'th bit contains the property's value(1:true, 0:false)
uint32_t mBooleanProperties;
nsRefPtrHashtable<nsUint32HashKey, AccessibleNode> mRelationProperties;
nsDataHashtable<nsUint32HashKey, nsString> mStringProperties;
RefPtr<a11y::Accessible> mIntl;
RefPtr<nsINode> mDOMNode;
RefPtr<dom::DOMStringList> mStates;
};
} // namespace dom
} // namespace mozilla
#endif // A11Y_JSAPI_ACCESSIBLENODE
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