/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#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/qcoreevent.h"
#include "QtCore/qlist.h"
#include "QtCore/qvector.h"
#include "QtCore/qreadwritelock.h"
#include "QtCore/qvariant.h"
#include "private/qguard_p.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 QDeclarativeData
{
public:
virtual ~QDeclarativeData();
virtual void destroyed(QObject *) = 0;
};
class Q_CORE_EXPORT QObjectPrivate : public QObjectData
{
Q_DECLARE_PUBLIC(QObject)
public:
struct ExtraData
{
#ifndef QT_NO_USERDATA
QVector<QObjectUserData *> userData;
#endif
QList<QByteArray> propertyNames;
QList<QVariant> propertyValues;
};
struct Connection
{
QObject *sender;
QObject *receiver;
int method;
uint connectionType : 3; // 0 == auto, 1 == direct, 2 == queued, 4 == blocking
QBasicAtomicPointer<int> argumentTypes;
// The next pointer for the singly-linked ConnectionList
Connection *nextConnectionList;
//senders linked list
Connection *next;
Connection **prev;
~Connection();
};
// 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();
void removePendingChildInsertedEvents(QObject *child);
#endif
static Sender *setCurrentSender(QObject *receiver,
Sender *sender);
static void resetCurrentSender(QObject *receiver,
Sender *currentSender,
Sender *previousSender);
static int *setDeleteWatch(QObjectPrivate *d, int *newWatch);
static void resetDeleteWatch(QObjectPrivate *d, int *oldWatch, int deleteWatch);
static void clearGuards(QObject *);
static QObjectPrivate *get(QObject *o) {
return o->d_func();
}
int signalIndex(const char *signalName) const;
bool isSignalConnected(int 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]; // 64-bit, so doesn't cause padding on 64-bit platforms
#ifdef QT3_SUPPORT
QList<QObject *> pendingChildInsertedEvents;
#else
// preserve binary compatibility with code compiled without Qt 3 support
// ### why?
QList<QObject *> unused;
#endif
QList<QPointer<QObject> > eventFilters;
QObject *currentChildBeingDeleted;
// these objects are all used to indicate that a QObject was deleted
// plus QPointer, which keeps a separate list
QDeclarativeData *declarativeData;
QGuard<QObject> *objectGuards;
QAtomicPointer<QtSharedPointer::ExternalRefCountData> sharedRefcount;
int *deleteWatch;
};
inline void q_guard_addGuard(QGuard<QObject> *g)
{
QObjectPrivate *p = QObjectPrivate::get(g->o);
if (p->wasDeleted) {
qWarning("QGuard: cannot add guard to deleted object");
g->o = 0;
return;
}
g->next = p->objectGuards;
p->objectGuards = g;
g->prev = &p->objectGuards;
if (g->next)
g->next->prev = &g->next;
}
inline void q_guard_removeGuard(QGuard<QObject> *g)
{
if (g->next) g->next->prev = g->prev;
*g->prev = g->next;
g->next = 0;
g->prev = 0;
}
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(int id, const QObject *sender, int signalId,
int nargs = 0, int *types = 0, void **args = 0, QSemaphore *semaphore = 0);
~QMetaCallEvent();
inline int id() const { return id_; }
inline const QObject *sender() const { return sender_; }
inline int signalId() const { return signalId_; }
inline void **args() const { return args_; }
virtual int placeMetaCall(QObject *object);
private:
int id_;
const QObject *sender_;
int signalId_;
int nargs_;
int *types_;
void **args_;
QSemaphore *semaphore_;
};
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