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+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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;
+// 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),
+ attachedProperties(0), scriptValue(0), propertyCache(0), guards(0) {
+ init();
+ }
+
+ static inline void init() {
+ QAbstractDeclarativeData::destroyed = destroyed;
+ QAbstractDeclarativeData::parentChanged = parentChanged;
+ }
+
+ static void destroyed(QAbstractDeclarativeData *, QObject *);
+ static void parentChanged(QAbstractDeclarativeData *, QObject *, QObject *);
+
+ void destroyed(QObject *);
+ void parentChanged(QObject *, QObject *);
+
+ void setImplicitDestructible() {
+ if (!explicitIndestructibleSet) indestructible = false;
+ }
+
+ quint32 ownMemory:1;
+ quint32 ownContext:1;
+ quint32 indestructible:1;
+ quint32 explicitIndestructibleSet:1;
+ quint32 dummy:28;
+
+ QDeclarativeContextData *context;
+ 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;
+
+ QHash<int, QObject *> *attachedProperties;
+
+ // ### Can we make this QScriptValuePrivate so we incur no additional allocation
+ // cost?
+ QScriptValue *scriptValue;
+ 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;
+ }
+ }
+};
+
+template<class T>
+void QDeclarativeGuard<T>::addGuard()
+{
+ if (QObjectPrivate::get(o)->wasDeleted) {
+ if (prev) remGuard();
+ 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()
+{
+ if (next) reinterpret_cast<QDeclarativeGuard<T> *>(next)->prev = prev;
+ *prev = next;
+ next = 0;
+ prev = 0;
+}
+
+QT_END_NAMESPACE
+
+#endif // QDECLARATIVEDATA_P_H