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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).

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** This file may be used under the terms of the GNU Lesser General Public

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**

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** rights. These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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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

** Public License version 3.0 requirements will be met:

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** Alternatively, this file may be used in accordance with the terms and

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****************************************************************************/

#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