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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QACCESSIBLECACHE_P
#define QACCESSIBLECACHE_P
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/private/qtguiglobal_p.h>
#include <QtCore/qobject.h>
#include <QtCore/qhash.h>
#include "qaccessible.h"
#if QT_CONFIG(accessibility)
Q_FORWARD_DECLARE_OBJC_CLASS(QT_MANGLE_NAMESPACE(QMacAccessibilityElement));
QT_BEGIN_NAMESPACE
class Q_GUI_EXPORT QAccessibleObjectDestroyedEvent :public QAccessibleEvent
{
public:
/* A regular event, used when the object is still alive
*/
inline QAccessibleObjectDestroyedEvent(QObject *obj)
: QAccessibleEvent(obj, QAccessible::ObjectDestroyed)
{
}
/* A regular event, used when there is no object
*/
inline QAccessibleObjectDestroyedEvent(QAccessibleInterface *iface)
: QAccessibleEvent(static_cast<QObject *>(nullptr), QAccessible::ObjectDestroyed)
{
m_uniqueId = QAccessible::uniqueId(iface);
}
/* An event with object() == nullptr, and uniqueid set,
used during object destruction */
inline QAccessibleObjectDestroyedEvent(QAccessible::Id uniqueId)
: QAccessibleEvent(static_cast<QObject *>(nullptr), QAccessible::ObjectDestroyed)
{
m_uniqueId = uniqueId;
}
~QAccessibleObjectDestroyedEvent();
};
class Q_GUI_EXPORT QAccessibleCache :public QObject
{
Q_OBJECT
public:
~QAccessibleCache() override;
static QAccessibleCache *instance();
QAccessibleInterface *interfaceForId(QAccessible::Id id) const;
QAccessible::Id idForInterface(QAccessibleInterface *iface) const;
QAccessible::Id idForObject(QObject *obj) const;
bool containsObject(QObject *obj) const;
QAccessible::Id insert(QObject *object, QAccessibleInterface *iface) const;
void deleteInterface(QAccessible::Id id, QObject *obj = nullptr);
void sendObjectDestroyedEvent(QObject *obj);
#ifdef Q_OS_APPLE
QT_MANGLE_NAMESPACE(QMacAccessibilityElement) *elementForId(QAccessible::Id axid) const;
bool insertElement(QAccessible::Id axid, QT_MANGLE_NAMESPACE(QMacAccessibilityElement) *element) const;
#endif
private Q_SLOTS:
void objectDestroyed(QObject *obj);
private:
QAccessible::Id acquireId() const;
mutable QHash<QAccessible::Id, QAccessibleInterface *> idToInterface;
mutable QHash<QAccessibleInterface *, QAccessible::Id> interfaceToId;
mutable QMultiHash<QObject *, std::pair<QAccessible::Id, const QMetaObject*>> objectToId;
#ifdef Q_OS_APPLE
void removeAccessibleElement(QAccessible::Id axid);
mutable QHash<QAccessible::Id, QT_MANGLE_NAMESPACE(QMacAccessibilityElement) *> accessibleElements;
#endif
friend class QAccessible;
friend class QAccessibleInterface;
};
QT_END_NAMESPACE
#endif // QT_CONFIG(accessibility)
#endif