qobject.h

/****************************************************************************
** $Id: //depot/qt/main/src/kernel/qobject.h#79 $
**
** Definition of QObject class
**
** Created : 930418
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef QOBJECT_H
#define QOBJECT_H

#ifndef QT_H
#include "qobjectdefs.h"
#include "qwindowdefs.h"
#include "qstring.h"
#include "qevent.h"
#include "qnamespace.h"
#include "qstringlist.h" // obsolete
#endif // QT_H

#define QT_TR_NOOP(x) (x)
#define QT_TRANSLATE_NOOP(scope,x) (x)

class QMetaObject;
class QVariant;

#ifndef QT_MOC_CPP

class Q_EXPORT QObject: public Qt
{
    Q_PROPERTY( QCString name READ name WRITE setName )

public:
    QObject( QObject *parent=0, const char *name=0 );
    virtual ~QObject();

    static QString tr( const char * );
    static QString tr( const char *, const char * );

    virtual bool event( QEvent * );
    virtual bool eventFilter( QObject *, QEvent * );

    virtual QMetaObject *metaObject() const { return staticMetaObject(); }
    virtual const char  *className()  const;

    bool         isA( const char * )     const;
    bool         inherits( const char * ) const;

    const char  *name() const;
    const char  *name( const char * defaultName ) const;

    virtual void setName( const char *name );
    bool         isWidgetType()   const { return isWidget; }
    bool         highPriority()   const { return FALSE; }

    bool         signalsBlocked()  const { return blockSig; }
    void         blockSignals( bool b );

    int          startTimer( int interval );
    void         killTimer( int id );
    void         killTimers();

    QObject           *child( const char *name, const char *type = 0 );
    const QObjectList *children() const { return childObjects; }

    static const QObjectList *objectTrees();

    //### make queryList const in 3.0
    QObjectList       *queryList( const char *inheritsClass = 0,
                                  const char *objName = 0,
                                  bool regexpMatch = TRUE,
                                  bool recursiveSearch = TRUE );

    virtual void insertChild( QObject * );
    virtual void removeChild( QObject * );

    void         installEventFilter( const QObject * );
    void         removeEventFilter( const QObject * );

    static bool  connect( const QObject *sender, const char *signal,
                          const QObject *receiver, const char *member );
    bool         connect( const QObject *sender, const char *signal,
                          const char *member ) const;
    static bool  disconnect( const QObject *sender, const char *signal,
                             const QObject *receiver, const char *member );
    bool         disconnect( const char *signal=0,
                             const QObject *receiver=0, const char *member=0 );
    bool         disconnect( const QObject *receiver, const char *member=0 );

    void         dumpObjectTree();
    void         dumpObjectInfo();

#ifndef QT_NO_PROPERTIES
    bool setProperty( const char *name, const QVariant& value ); // virtual in Qt 3.0
    QVariant property( const char *name ) const;    // virtual in Qt 3.0
#endif // QT_NO_PROPERTIES

signals:
    void         destroyed();

public:
    QObject     *parent() const { return parentObj; }

private slots:
    void         cleanupEventFilter();

protected:
    bool         activate_filters( QEvent * );
    QConnectionList *receivers( const char *signal ) const;
    void         activate_signal( const char *signal );
    void         activate_signal( const char *signal, short );
    void         activate_signal( const char *signal, int );
    void         activate_signal( const char *signal, long );
    void         activate_signal( const char *signal, const char * );
    void         activate_signal_bool( const char *signal, bool );
    void         activate_signal_string( const char *signal, QString );
    void         activate_signal_strref( const char *signal, const QString & );

    const QObject *sender();


    virtual void initMetaObject();
    static QMetaObject* staticMetaObject();

    virtual void timerEvent( QTimerEvent * );
    virtual void childEvent( QChildEvent * );

    virtual void connectNotify( const char *signal );
    virtual void disconnectNotify( const char *signal );
    virtual bool checkConnectArgs( const char *signal, const QObject *receiver,
                                   const char *member );
    static QCString normalizeSignalSlot( const char *signalSlot );

    static  void badSuperclassWarning( const char *className,
                                       const char *superclassName );

private:
    uint        isSignal   : 1;
    uint        isWidget   : 1;
    uint        pendTimer  : 1;
    uint        pendEvent  : 1;
    uint        blockSig   : 1;
    uint        wasDeleted : 1;
    uint        isTree : 1;

    QMetaObject *queryMetaObject() const;
    static QMetaObject *metaObj;
    const char  *objname;
    QObject     *parentObj;
    QObjectList *childObjects;
    QSignalDict *connections;
    QObjectList *senderObjects;
    QObjectList *eventFilters;
    // ### 3.0 todo: add d pointer

    QObject     *sigSender;

    friend class QApplication;
    friend class QBaseApplication;
    friend class QWidget;
    friend class QSignal;
    friend class QSenderObject;

private:        // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QObject( const QObject & );
    QObject &operator=( const QObject & );
#endif

public:
    // obsolete
#ifndef QT_NO_STRINGLIST
    QStringList  superClasses( bool includeThis = FALSE ) const; // obsolete, remove 3.0
#endif
};

#endif

inline bool QObject::connect( const QObject *sender, const char *signal,
                              const char *member ) const
{
    return connect( sender, signal, this, member );
}

inline bool QObject::disconnect( const char *signal,
                                 const QObject *receiver, const char *member )
{
    return disconnect( this, signal, receiver, member );
}

inline bool QObject::disconnect( const QObject *receiver, const char *member )
{
    return disconnect( this, 0, receiver, member );
}

inline const QObject *QObject::sender()
{
    return sigSender;
}


class Q_EXPORT QSenderObject : public QObject           // object for sending signals
{
public:
    void setSender( QObject *s ) { sigSender=s; }
};

#ifdef QT_NO_TRANSLATION
inline QString QObject::tr( const char *s ) {
    return QString::fromLatin1( s );
}
inline QString QObject::tr( const char *s, const char * ) {
    return QString::fromLatin1( s );
}
#endif


#endif // QOBJECT_H