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Diffstat (limited to '')
| -rw-r--r-- | accessible/aom/AccessibleNode.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/accessible/aom/AccessibleNode.h b/accessible/aom/AccessibleNode.h new file mode 100644 index 0000000000..d94703b6db --- /dev/null +++ b/accessible/aom/AccessibleNode.h @@ -0,0 +1,211 @@ +/* -*- 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 |