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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQMLDATA_P_H
#define QQMLDATA_P_H
//
// 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 <private/qtqmlglobal_p.h>
#include <private/qobject_p.h>
#include <private/qv8_p.h>
QT_BEGIN_NAMESPACE
template <class Key, class T> class QHash;
class QQmlGuardImpl;
class QQmlCompiledData;
class QQmlAbstractBinding;
class QQmlContext;
class QQmlPropertyCache;
class QQmlContextData;
class QQmlNotifier;
class QQmlDataExtended;
class QQmlNotifierEndpoint;
// This class is structured in such a way, that simply zero'ing it is the
// default state for elemental object allocations. This is crucial in the
// workings of the QQmlInstruction::CreateSimpleObject instruction.
// Don't change anything here without first considering that case!
class Q_QML_EXPORT QQmlData : public QAbstractDeclarativeData
{
public:
QQmlData()
: ownMemory(true), ownContext(false), indestructible(true), explicitIndestructibleSet(false),
hasTaintedV8Object(false), notifyList(0), context(0), outerContext(0), bindings(0),
nextContextObject(0), prevContextObject(0), bindingBitsSize(0), bindingBits(0),
lineNumber(0), columnNumber(0), deferredComponent(0), deferredIdx(0), v8objectid(0),
propertyCache(0), guards(0), extendedData(0) {
init();
}
static inline void init() {
QAbstractDeclarativeData::destroyed = destroyed;
QAbstractDeclarativeData::parentChanged = parentChanged;
QAbstractDeclarativeData::objectNameChanged = objectNameChanged;
QAbstractDeclarativeData::signalEmitted = signalEmitted;
}
static void destroyed(QAbstractDeclarativeData *, QObject *);
static void parentChanged(QAbstractDeclarativeData *, QObject *, QObject *);
static void objectNameChanged(QAbstractDeclarativeData *, QObject *);
static void signalEmitted(QAbstractDeclarativeData *, QObject *, int, void **);
void destroyed(QObject *);
void parentChanged(QObject *, QObject *);
void objectNameChanged(QObject *);
void setImplicitDestructible() {
if (!explicitIndestructibleSet) indestructible = false;
}
quint32 ownMemory:1;
quint32 ownContext:1;
quint32 indestructible:1;
quint32 explicitIndestructibleSet:1;
quint32 hasTaintedV8Object:1;
quint32 dummy:27;
struct NotifyList {
quint64 connectionMask;
quint16 maximumTodoIndex;
quint16 notifiesSize;
QQmlNotifierEndpoint *todo;
QQmlNotifierEndpoint**notifies;
void layout();
private:
void layout(QQmlNotifierEndpoint*);
};
NotifyList *notifyList;
inline QQmlNotifierEndpoint *notify(int index);
void addNotify(int index, QQmlNotifierEndpoint *);
// The context that created the C++ object
QQmlContextData *context;
// The outermost context in which this object lives
QQmlContextData *outerContext;
QQmlAbstractBinding *bindings;
// Linked list for QQmlContext::contextObjects
QQmlData *nextContextObject;
QQmlData**prevContextObject;
int bindingBitsSize;
quint32 *bindingBits;
bool hasBindingBit(int) const;
void clearBindingBit(int);
void setBindingBit(QObject *obj, int);
ushort lineNumber;
ushort columnNumber;
QQmlCompiledData *deferredComponent; // Can't this be found from the context?
unsigned int deferredIdx;
quint32 v8objectid;
v8::Persistent<v8::Object> v8object;
QQmlPropertyCache *propertyCache;
QQmlGuardImpl *guards;
static QQmlData *get(const QObject *object, bool create = false) {
QObjectPrivate *priv = QObjectPrivate::get(const_cast<QObject *>(object));
if (priv->wasDeleted) {
Q_ASSERT(!create);
return 0;
} else if (priv->declarativeData) {
return static_cast<QQmlData *>(priv->declarativeData);
} else if (create) {
priv->declarativeData = new QQmlData;
return static_cast<QQmlData *>(priv->declarativeData);
} else {
return 0;
}
}
bool hasExtendedData() const { return extendedData != 0; }
QQmlNotifier *objectNameNotifier() const;
QHash<int, QObject *> *attachedProperties() const;
private:
// For objectNameNotifier and attachedProperties
mutable QQmlDataExtended *extendedData;
};
QQmlNotifierEndpoint *QQmlData::notify(int index)
{
Q_ASSERT(index <= 0xFFFF);
if (!notifyList || !(notifyList->connectionMask & (1ULL << quint64(index % 64)))) {
return 0;
} else if (index < notifyList->notifiesSize) {
return notifyList->notifies[index];
} else if (index <= notifyList->maximumTodoIndex) {
notifyList->layout();
}
if (index < notifyList->notifiesSize) {
return notifyList->notifies[index];
} else {
return 0;
}
}
QT_END_NAMESPACE
#endif // QQMLDATA_P_H
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