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/* -*- mode: C++; c-file-style: "gnu" -*-
*
* This file is part of KMail, the KDE mail client.
* Copyright (c) 2003 Carsten Burghardt <burghardt@kde.org>
*
* KMail is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* KMail is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of this program with any edition of
* the Qt library by Trolltech AS, Norway (or with modified versions
* of Qt that use the same license as Qt), and distribute linked
* combinations including the two. You must obey the GNU General
* Public License in all respects for all of the code used other than
* Qt. If you modify this file, you may extend this exception to
* your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from
* your version.
*/
#ifndef bodyiterator_h
#define bodyiterator_h
#include <qptrlist.h>
#include <qstringlist.h>
class KMMessagePart;
namespace KMail {
class AttachmentStrategy;
// Base class
class BodyVisitor
{
public:
BodyVisitor();
virtual ~BodyVisitor();
/** Register the parts that should be visited */
void visit( KMMessagePart * part );
void visit( QPtrList<KMMessagePart> & list );
/** Returns a list of parts that should be loaded */
QPtrList<KMMessagePart> partsToLoad();
/** Decides whether a part should be loaded.
This needs to be implemented by a subclass */
virtual bool addPartToList( KMMessagePart * part ) = 0;
protected:
/**
* Checks if one of the parents needs loaded children
* This is e.g. needed for multipart/signed where all parts have to be loaded
*/
static bool parentNeedsLoading( KMMessagePart * part );
protected:
QPtrList<KMMessagePart> mParts;
QStringList mBasicList;
};
// Factory to create a visitor according to the Attachment Strategy
class BodyVisitorFactory
{
public:
static BodyVisitor* getVisitor( const AttachmentStrategy* strategy );
};
// Visitor for smart attachment display
class BodyVisitorSmart: public BodyVisitor
{
public:
BodyVisitorSmart();
bool addPartToList( KMMessagePart * part );
};
// Visitor for inline attachment display
class BodyVisitorInline: public BodyVisitor
{
public:
BodyVisitorInline();
bool addPartToList( KMMessagePart * part );
};
// Visitor for hidden attachment display
class BodyVisitorHidden: public BodyVisitor
{
public:
BodyVisitorHidden();
bool addPartToList( KMMessagePart * part );
};
}
#endif
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