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+/* -*- c++ -*-
+ headerstrategy.h
+
+ This file is part of KMail, the KDE mail client.
+ Copyright (c) 2003 Marc Mutz <mutz@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 __KMAIL_HEADERSTRATEGY_H__
+#define __KMAIL_HEADERSTRATEGY_H__
+
+class QString;
+class QStringList;
+
+namespace KMail {
+
+ class HeaderStrategy {
+ protected:
+ HeaderStrategy();
+ virtual ~HeaderStrategy();
+
+ public:
+ //
+ // Factory methods:
+ //
+ enum Type { All, Rich, Standard, Brief, Custom };
+
+ static const HeaderStrategy * create( Type type );
+ static const HeaderStrategy * create( const QString & type );
+
+ static const HeaderStrategy * all();
+ static const HeaderStrategy * rich();
+ static const HeaderStrategy * standard();
+ static const HeaderStrategy * brief();
+ static const HeaderStrategy * custom();
+
+ //
+ // Methods for handling the strategies:
+ //
+ virtual const char * name() const = 0;
+ virtual const HeaderStrategy * next() const = 0;
+ virtual const HeaderStrategy * prev() const = 0;
+
+ //
+ // HeaderStrategy interface:
+ //
+ enum DefaultPolicy { Display, Hide };
+
+ virtual QStringList headersToDisplay() const;
+ virtual QStringList headersToHide() const;
+ virtual DefaultPolicy defaultPolicy() const = 0;
+ virtual bool showHeader( const QString & header ) const;
+ };
+
+} // namespace KMail
+
+#endif // __KMAIL_HEADERSTRATEGY_H__