/**************************************************************************** | |
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
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** Contact: Nokia Corporation (qt-info@nokia.com) | |
** | |
** This file is part of the QtDeclarative module of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
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** rights. These rights are described in the Nokia Qt LGPL Exception | |
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** | |
** 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 | |
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****************************************************************************/ | |
#ifndef QDECLARATIVEDATA_P_H | |
#define QDECLARATIVEDATA_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 <QtScript/qscriptvalue.h> | |
#include <private/qobject_p.h> | |
#include "private/qdeclarativeguard_p.h" | |
QT_BEGIN_NAMESPACE | |
class QDeclarativeCompiledData; | |
class QDeclarativeAbstractBinding; | |
class QDeclarativeContext; | |
class QDeclarativePropertyCache; | |
class QDeclarativeContextData; | |
class QDeclarativeNotifier; | |
class QDeclarativeDataExtended; | |
// 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 QDeclarativeInstruction::CreateSimpleObject instruction. | |
// Don't change anything here without first considering that case! | |
class Q_AUTOTEST_EXPORT QDeclarativeData : public QAbstractDeclarativeData | |
{ | |
public: | |
QDeclarativeData() | |
: ownMemory(true), ownContext(false), indestructible(true), explicitIndestructibleSet(false), | |
context(0), outerContext(0), bindings(0), nextContextObject(0), prevContextObject(0), bindingBitsSize(0), | |
bindingBits(0), lineNumber(0), columnNumber(0), deferredComponent(0), deferredIdx(0), | |
scriptValue(0), objectDataRefCount(0), propertyCache(0), guards(0), extendedData(0) { | |
init(); | |
} | |
static inline void init() { | |
QAbstractDeclarativeData::destroyed = destroyed; | |
QAbstractDeclarativeData::parentChanged = parentChanged; | |
QAbstractDeclarativeData::objectNameChanged = objectNameChanged; | |
} | |
static void destroyed(QAbstractDeclarativeData *, QObject *); | |
static void parentChanged(QAbstractDeclarativeData *, QObject *, QObject *); | |
static void objectNameChanged(QAbstractDeclarativeData *, QObject *); | |
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 dummy:28; | |
// The context that created the C++ object | |
QDeclarativeContextData *context; | |
// The outermost context in which this object lives | |
QDeclarativeContextData *outerContext; | |
QDeclarativeAbstractBinding *bindings; | |
// Linked list for QDeclarativeContext::contextObjects | |
QDeclarativeData *nextContextObject; | |
QDeclarativeData**prevContextObject; | |
int bindingBitsSize; | |
quint32 *bindingBits; | |
bool hasBindingBit(int) const; | |
void clearBindingBit(int); | |
void setBindingBit(QObject *obj, int); | |
ushort lineNumber; | |
ushort columnNumber; | |
QDeclarativeCompiledData *deferredComponent; // Can't this be found from the context? | |
unsigned int deferredIdx; | |
// ### Can we make this QScriptValuePrivate so we incur no additional allocation | |
// cost? | |
QScriptValue *scriptValue; | |
quint32 objectDataRefCount; | |
QDeclarativePropertyCache *propertyCache; | |
QDeclarativeGuard<QObject> *guards; | |
static QDeclarativeData *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<QDeclarativeData *>(priv->declarativeData); | |
} else if (create) { | |
priv->declarativeData = new QDeclarativeData; | |
return static_cast<QDeclarativeData *>(priv->declarativeData); | |
} else { | |
return 0; | |
} | |
} | |
bool hasExtendedData() const { return extendedData != 0; } | |
QDeclarativeNotifier *objectNameNotifier() const; | |
QHash<int, QObject *> *attachedProperties() const; | |
private: | |
// For objectNameNotifier and attachedProperties | |
mutable QDeclarativeDataExtended *extendedData; | |
}; | |
template<class T> | |
void QDeclarativeGuard<T>::addGuard() | |
{ | |
Q_ASSERT(!prev); | |
if (QObjectPrivate::get(o)->wasDeleted) | |
return; | |
QDeclarativeData *data = QDeclarativeData::get(o, true); | |
next = data->guards; | |
if (next) reinterpret_cast<QDeclarativeGuard<T> *>(next)->prev = &next; | |
data->guards = reinterpret_cast<QDeclarativeGuard<QObject> *>(this); | |
prev = &data->guards; | |
} | |
template<class T> | |
void QDeclarativeGuard<T>::remGuard() | |
{ | |
Q_ASSERT(prev); | |
if (next) reinterpret_cast<QDeclarativeGuard<T> *>(next)->prev = prev; | |
*prev = next; | |
next = 0; | |
prev = 0; | |
} | |
QT_END_NAMESPACE | |
#endif // QDECLARATIVEDATA_P_H |