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/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS. All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** 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.
**
** 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/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QCOM_H
#define QCOM_H
#include <qstringlist.h>
#ifndef QT_NO_COMPONENT
#include <qpe/quuid.h>
#include <qpe/qpeglobal.h>
#define QRESULT unsigned long
#define QS_OK (QRESULT)0x00000000
#define QS_FALSE (QRESULT)0x00000001
#define QE_NOTIMPL (QRESULT)0x80000001
#define QE_OUTOFMEMORY (QRESULT)0x80000002
#define QE_INVALIDARG (QRESULT)0x80000003
#define QE_NOINTERFACE (QRESULT)0x80000004
#define QE_NOCOMPONENT (QRESULT)0x80000005
// {1D8518CD-E8F5-4366-99E8-879FD7E482DE}
#ifndef IID_QUnknown
#define IID_QUnknown QUuid(0x1d8518cd, 0xe8f5, 0x4366, 0x99, 0xe8, 0x87, 0x9f, 0xd7, 0xe4, 0x82, 0xde)
#endif
struct Q_EXPORT QUnknownInterface
{
virtual QRESULT queryInterface( const QUuid&, QUnknownInterface** ) = 0;
virtual ulong addRef() = 0;
virtual ulong release() = 0;
};
// {D16111D4-E1E7-4C47-8599-24483DAE2E07}
#ifndef IID_QLibrary
#define IID_QLibrary QUuid( 0xd16111d4, 0xe1e7, 0x4c47, 0x85, 0x99, 0x24, 0x48, 0x3d, 0xae, 0x2e, 0x07)
#endif
struct Q_EXPORT QLibraryInterface : public QUnknownInterface
{
virtual bool init() = 0;
virtual void cleanup() = 0;
virtual bool canUnload() const = 0;
};
#define Q_CREATE_INSTANCE( IMPLEMENTATION ) \
IMPLEMENTATION *i = new IMPLEMENTATION; \
QUnknownInterface* iface = 0; \
i->queryInterface( IID_QUnknown, &iface ); \
return iface;
template <class T>
class QInterfacePtr
{
public:
QInterfacePtr():iface(0){}
QInterfacePtr( T* i) {
if ( (iface = i) )
iface->addRef();
}
QInterfacePtr(const QInterfacePtr<T> &p) {
if ( (iface = p.iface) )
iface->addRef();
}
~QInterfacePtr() {
if ( iface )
iface->release();
}
QInterfacePtr<T> &operator=(const QInterfacePtr<T> &p) {
if ( iface != p.iface ) {
if ( iface )
iface->release();
if ( (iface = p.iface) )
iface->addRef();
}
return *this;
}
QInterfacePtr<T> &operator=(T* i) {
if (iface != i ) {
if ( iface )
iface->release();
if ( (iface = i) )
iface->addRef();
}
return *this;
}
bool operator==( const QInterfacePtr<T> &p ) const { return iface == p.iface; }
bool operator!= ( const QInterfacePtr<T>& p ) const { return !( *this == p ); }
bool isNull() const { return !iface; }
T* operator->() const { return iface; }
T& operator*() const { return *iface; }
operator T*() const { return iface; }
QUnknownInterface** operator &() const {
if( iface )
iface->release();
return (QUnknownInterface**)&iface;
}
T** operator &() {
if ( iface )
iface->release();
return &iface;
}
private:
T* iface;
};
// internal class that wraps an initialized ulong
struct Q_EXPORT QtULong
{
QtULong() : ref( 0 ) { }
operator unsigned long () const { return ref; }
unsigned long& operator++() { return ++ref; }
unsigned long operator++( int ) { return ref++; }
unsigned long& operator--() { return --ref; }
unsigned long operator--( int ) { return ref--; }
unsigned long ref;
};
#define Q_EXPORT_INTERFACE() \
extern "C" QPE_EXPORT_SYMBOL QUnknownInterface* ucm_instantiate ()
#define Q_REFCOUNT \
private: \
QtULong qtrefcount; \
public: \
ulong addRef() {return qtrefcount++;} \
ulong release() {if(!--qtrefcount){delete this;return 0;}return qtrefcount;}
#else // QT_NO_COMPONENT
struct Q_EXPORT QUnknownInterface
{
};
#endif // QT_NO_COMPONENT
#endif // QCOM_H
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