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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore 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 QOBJECT_P_H
#define QOBJECT_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp. This header
// file may change from version to version without notice, or even be removed.
//
// We mean it.
//
#include "QtCore/qobject.h"
#include "QtCore/qpointer.h"
#include "QtCore/qsharedpointer.h"
#include "QtCore/qcoreevent.h"
#include "QtCore/qlist.h"
#include "QtCore/qvector.h"
#include "QtCore/qreadwritelock.h"
#include "QtCore/qvariant.h"
QT_BEGIN_NAMESPACE
class QVariant;
class QThreadData;
class QObjectConnectionListVector;
namespace QtSharedPointer { struct ExternalRefCountData; }
/* mirrored in QtTestLib, DON'T CHANGE without prior warning */
struct QSignalSpyCallbackSet
{
typedef void (*BeginCallback)(QObject *caller, int method_index, void **argv);
typedef void (*EndCallback)(QObject *caller, int method_index);
BeginCallback signal_begin_callback,
slot_begin_callback;
EndCallback signal_end_callback,
slot_end_callback;
};
void Q_CORE_EXPORT qt_register_signal_spy_callbacks(const QSignalSpyCallbackSet &callback_set);
extern QSignalSpyCallbackSet Q_CORE_EXPORT qt_signal_spy_callback_set;
enum { QObjectPrivateVersion = QT_VERSION };
class Q_CORE_EXPORT QAbstractDeclarativeData
{
public:
static void (*destroyed)(QAbstractDeclarativeData *, QObject *);
static void (*parentChanged)(QAbstractDeclarativeData *, QObject *, QObject *);
static void (*objectNameChanged)(QAbstractDeclarativeData *, QObject *);
};
class Q_CORE_EXPORT QObjectPrivate : public QObjectData
{
Q_DECLARE_PUBLIC(QObject)
public:
struct ExtraData
{
ExtraData() {}
#ifndef QT_NO_USERDATA
QVector<QObjectUserData *> userData;
#endif
QList<QByteArray> propertyNames;
QList<QVariant> propertyValues;
};
typedef void (*StaticMetaCallFunction)(QObject *, QMetaObject::Call, int, void **);
struct Connection
{
QObject *sender;
QObject *receiver;
StaticMetaCallFunction callFunction;
// The next pointer for the singly-linked ConnectionList
Connection *nextConnectionList;
//senders linked list
Connection *next;
Connection **prev;
QBasicAtomicPointer<int> argumentTypes;
ushort method_offset;
ushort method_relative;
ushort connectionType : 3; // 0 == auto, 1 == direct, 2 == queued, 4 == blocking
~Connection();
int method() const { return method_offset + method_relative; }
};
// ConnectionList is a singly-linked list
struct ConnectionList {
ConnectionList() : first(0), last(0) {}
Connection *first;
Connection *last;
};
struct Sender
{
QObject *sender;
int signal;
int ref;
};
QObjectPrivate(int version = QObjectPrivateVersion);
virtual ~QObjectPrivate();
void deleteChildren();
void setParent_helper(QObject *);
void moveToThread_helper();
void setThreadData_helper(QThreadData *currentData, QThreadData *targetData);
void _q_reregisterTimers(void *pointer);
bool isSender(const QObject *receiver, const char *signal) const;
QObjectList receiverList(const char *signal) const;
QObjectList senderList() const;
void addConnection(int signal, Connection *c);
void cleanConnectionLists();
#ifdef QT3_SUPPORT
void sendPendingChildInsertedEvents();
#endif
static inline Sender *setCurrentSender(QObject *receiver,
Sender *sender);
static inline void resetCurrentSender(QObject *receiver,
Sender *currentSender,
Sender *previousSender);
#ifdef QT_JAMBI_BUILD
static int *setDeleteWatch(QObjectPrivate *d, int *newWatch);
static void resetDeleteWatch(QObjectPrivate *d, int *oldWatch, int deleteWatch);
#endif
static void clearGuards(QObject *);
static QObjectPrivate *get(QObject *o) {
return o->d_func();
}
int signalIndex(const char *signalName) const;
inline bool isSignalConnected(uint signalIdx) const;
public:
QString objectName;
ExtraData *extraData; // extra data set by the user
QThreadData *threadData; // id of the thread that owns the object
QObjectConnectionListVector *connectionLists;
Connection *senders; // linked list of connections connected to this object
Sender *currentSender; // object currently activating the object
mutable quint32 connectedSignals[2];
#ifdef QT3_SUPPORT
QVector< QWeakPointer<QObject> > pendingChildInsertedEvents;
#else
// preserve binary compatibility with code compiled without Qt 3 support
// keeping the binary layout stable helps the Qt Creator debugger
void *unused;
#endif
QList<QPointer<QObject> > eventFilters;
union {
QObject *currentChildBeingDeleted;
QAbstractDeclarativeData *declarativeData; //extra data used by the declarative module
};
// these objects are all used to indicate that a QObject was deleted
// plus QPointer, which keeps a separate list
QAtomicPointer<QtSharedPointer::ExternalRefCountData> sharedRefcount;
#ifdef QT_JAMBI_BUILD
int *deleteWatch;
#endif
};
/*! \internal
Returns true if the signal with index \a signal_index from object \a sender is connected.
Signals with indices above a certain range are always considered connected (see connectedSignals
in QObjectPrivate). If a signal spy is installed, all signals are considered connected.
\a signal_index must be the index returned by QObjectPrivate::signalIndex;
*/
inline bool QObjectPrivate::isSignalConnected(uint signal_index) const
{
return signal_index >= sizeof(connectedSignals) * 8
|| (connectedSignals[signal_index >> 5] & (1 << (signal_index & 0x1f))
|| qt_signal_spy_callback_set.signal_begin_callback
|| qt_signal_spy_callback_set.signal_end_callback);
}
inline QObjectPrivate::Sender *QObjectPrivate::setCurrentSender(QObject *receiver,
Sender *sender)
{
Sender *previousSender = receiver->d_func()->currentSender;
receiver->d_func()->currentSender = sender;
return previousSender;
}
inline void QObjectPrivate::resetCurrentSender(QObject *receiver,
Sender *currentSender,
Sender *previousSender)
{
// ref is set to zero when this object is deleted during the metacall
if (currentSender->ref == 1)
receiver->d_func()->currentSender = previousSender;
// if we've recursed, we need to tell the caller about the objects deletion
if (previousSender)
previousSender->ref = currentSender->ref;
}
Q_DECLARE_TYPEINFO(QObjectPrivate::Connection, Q_MOVABLE_TYPE);
Q_DECLARE_TYPEINFO(QObjectPrivate::Sender, Q_MOVABLE_TYPE);
class QSemaphore;
class Q_CORE_EXPORT QMetaCallEvent : public QEvent
{
public:
QMetaCallEvent(ushort method_offset, ushort method_relative, QObjectPrivate::StaticMetaCallFunction callFunction , const QObject *sender, int signalId,
int nargs = 0, int *types = 0, void **args = 0, QSemaphore *semaphore = 0);
~QMetaCallEvent();
inline int id() const { return method_offset_ + method_relative_; }
inline const QObject *sender() const { return sender_; }
inline int signalId() const { return signalId_; }
inline void **args() const { return args_; }
virtual void placeMetaCall(QObject *object);
private:
const QObject *sender_;
int signalId_;
int nargs_;
int *types_;
void **args_;
QSemaphore *semaphore_;
QObjectPrivate::StaticMetaCallFunction callFunction_;
ushort method_offset_;
ushort method_relative_;
};
class QBoolBlocker
{
public:
inline QBoolBlocker(bool &b, bool value=true):block(b), reset(b){block = value;}
inline ~QBoolBlocker(){block = reset; }
private:
bool █
bool reset;
};
void Q_CORE_EXPORT qDeleteInEventHandler(QObject *o);
struct Q_CORE_EXPORT QAbstractDynamicMetaObject : public QMetaObject
{
virtual ~QAbstractDynamicMetaObject() {}
virtual int metaCall(QMetaObject::Call, int _id, void **) { return _id; }
virtual int createProperty(const char *, const char *) { return -1; }
};
QT_END_NAMESPACE
#endif // QOBJECT_P_H
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