Add Qt3 development HEAD version

1 files changed, 144 insertions, 0 deletions

diff --git a/src/kernel/qguardedptr.h b/src/kernel/qguardedptr.h
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+/****************************************************************************
+**
+** Definition of QGuardedPtr class
+**
+** Created : 990929
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the kernel module of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.QPL
+** included in the packaging of this file.  Licensees holding valid Qt
+** Commercial 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 WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#ifndef QGUARDEDPTR_H
+#define QGUARDEDPTR_H
+
+#ifndef QT_H
+#include "qobject.h"
+#endif // QT_H
+
+// ### 4.0: rename to something without Private in it. Not really internal.
+class Q_EXPORT QGuardedPtrPrivate : public QObject, public QShared
+{
+    Q_OBJECT
+public:
+    QGuardedPtrPrivate( QObject* );
+    ~QGuardedPtrPrivate();
+
+    QObject* object() const;
+    void reconnect( QObject* );
+
+private slots:
+    void objectDestroyed();
+
+private:
+    QObject* obj;
+#if defined(Q_DISABLE_COPY) // Disabled copy constructor and operator=
+    QGuardedPtrPrivate( const QGuardedPtrPrivate & );
+    QGuardedPtrPrivate &operator=( const QGuardedPtrPrivate & );
+#endif
+};
+
+template <class T>
+class QGuardedPtr
+{
+public:
+    QGuardedPtr() : priv( new QGuardedPtrPrivate( 0 ) ) {}
+
+    QGuardedPtr( T* o) {
+	priv = new QGuardedPtrPrivate( (QObject*)o );
+    }
+
+    QGuardedPtr(const QGuardedPtr<T> &p) {
+	priv = p.priv;
+	ref();
+    }
+
+    ~QGuardedPtr() { deref(); }
+
+    QGuardedPtr<T> &operator=(const QGuardedPtr<T> &p) {
+	if ( priv != p.priv ) {
+	    deref();
+	    priv = p.priv;
+	    ref();
+	}
+	return *this;
+    }
+
+    QGuardedPtr<T> &operator=(T* o) {
+	if ( priv && priv->count == 1 ) {
+	    priv->reconnect( (QObject*)o );
+	} else {
+	    deref();
+	    priv = new QGuardedPtrPrivate( (QObject*)o );
+	}
+	return *this;
+    }
+
+    bool operator==( const QGuardedPtr<T> &p ) const {
+	return (T*)(*this) == (T*) p;
+    }
+
+    bool operator!= ( const QGuardedPtr<T>& p ) const {
+	return !( *this == p );
+    }
+
+    bool isNull() const { return !priv || !priv->object(); }
+
+    T* operator->() const { return (T*)(priv?priv->object():0); }
+
+    T& operator*() const { return *((T*)(priv?priv->object():0)); }
+
+    operator T*() const { return (T*)(priv?priv->object():0); }
+
+private:
+
+    void ref() { if (priv) priv->ref(); }
+
+    void deref() {
+	if ( priv && priv->deref() )
+	    delete priv;
+    }
+
+    QGuardedPtrPrivate* priv;
+};
+
+
+
+
+inline QObject* QGuardedPtrPrivate::object() const
+{
+    return obj;
+}
+
+#define Q_DEFINED_QGUARDEDPTR
+#include "qwinexport.h"
+#endif