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/* -*- c++ -*-
attachmentstrategy.cpp
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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "attachmentstrategy.h"
#include "partNode.h"
#include "kmmsgpart.h"
#include <tqstring.h>
#include <kdebug.h>
namespace KMail {
//
// IconicAttachmentStrategy:
// show everything but the first text/plain body as icons
//
class IconicAttachmentStrategy : public AttachmentStrategy {
friend class ::KMail::AttachmentStrategy;
protected:
IconicAttachmentStrategy() : AttachmentStrategy() {}
virtual ~IconicAttachmentStrategy() {}
public:
const char * name() const { return "iconic"; }
const AttachmentStrategy * next() const { return smart(); }
const AttachmentStrategy * prev() const { return hidden(); }
bool inlineNestedMessages() const { return false; }
Display defaultDisplay( const partNode * ) const { return AsIcon; }
};
//
// SmartAttachmentStrategy:
// in addition to Iconic, show all body parts
// with content-disposition == "inline" and
// all text parts without a filename or name parameter inline
//
class SmartAttachmentStrategy : public AttachmentStrategy {
friend class ::KMail::AttachmentStrategy;
protected:
SmartAttachmentStrategy() : AttachmentStrategy() {}
virtual ~SmartAttachmentStrategy() {}
public:
const char * name() const { return "smart"; }
const AttachmentStrategy * next() const { return inlined(); }
const AttachmentStrategy * prev() const { return iconic(); }
bool inlineNestedMessages() const { return true; }
Display defaultDisplay( const partNode * node ) const {
if ( node->hasContentDispositionInline() )
// explict "inline" disposition:
return Inline;
if ( node->isAttachment() )
// explicit "attachment" disposition:
return AsIcon;
if ( node->type() == DwMime::kTypeText &&
node->msgPart().fileName().stripWhiteSpace().isEmpty() &&
node->msgPart().name().stripWhiteSpace().isEmpty() )
// text/* w/o filename parameter:
return Inline;
return AsIcon;
}
};
//
// InlinedAttachmentStrategy:
// show everything possible inline
//
class InlinedAttachmentStrategy : public AttachmentStrategy {
friend class ::KMail::AttachmentStrategy;
protected:
InlinedAttachmentStrategy() : AttachmentStrategy() {}
virtual ~InlinedAttachmentStrategy() {}
public:
const char * name() const { return "inlined"; }
const AttachmentStrategy * next() const { return hidden(); }
const AttachmentStrategy * prev() const { return smart(); }
bool inlineNestedMessages() const { return true; }
Display defaultDisplay( const partNode * ) const { return Inline; }
};
//
// HiddenAttachmentStrategy
// show nothing except the first text/plain body part _at all_
//
class HiddenAttachmentStrategy : public AttachmentStrategy {
friend class ::KMail::AttachmentStrategy;
protected:
HiddenAttachmentStrategy() : AttachmentStrategy() {}
virtual ~HiddenAttachmentStrategy() {}
public:
const char * name() const { return "hidden"; }
const AttachmentStrategy * next() const { return iconic(); }
const AttachmentStrategy * prev() const { return inlined(); }
bool inlineNestedMessages() const { return false; }
Display defaultDisplay( const partNode * ) const { return None; }
};
//
// AttachmentStrategy abstract base:
//
AttachmentStrategy::AttachmentStrategy() {
}
AttachmentStrategy::~AttachmentStrategy() {
}
const AttachmentStrategy * AttachmentStrategy::create( Type type ) {
switch ( type ) {
case Iconic: return iconic();
case Smart: return smart();
case Inlined: return inlined();
case Hidden: return hidden();
}
kdFatal( 5006 ) << "AttachmentStrategy::create(): Unknown attachment startegy ( type == "
<< (int)type << " ) requested!" << endl;
return 0; // make compiler happy
}
const AttachmentStrategy * AttachmentStrategy::create( const TQString & type ) {
TQString lowerType = type.lower();
if ( lowerType == "iconic" ) return iconic();
//if ( lowerType == "smart" ) return smart(); // not needed, see below
if ( lowerType == "inlined" ) return inlined();
if ( lowerType == "hidden" ) return hidden();
// don't kdFatal here, b/c the strings are user-provided
// (KConfig), so fail gracefully to the default:
return smart();
}
static const AttachmentStrategy * iconicStrategy = 0;
static const AttachmentStrategy * smartStrategy = 0;
static const AttachmentStrategy * inlinedStrategy = 0;
static const AttachmentStrategy * hiddenStrategy = 0;
const AttachmentStrategy * AttachmentStrategy::iconic() {
if ( !iconicStrategy )
iconicStrategy = new IconicAttachmentStrategy();
return iconicStrategy;
}
const AttachmentStrategy * AttachmentStrategy::smart() {
if ( !smartStrategy )
smartStrategy = new SmartAttachmentStrategy();
return smartStrategy;
}
const AttachmentStrategy * AttachmentStrategy::inlined() {
if ( !inlinedStrategy )
inlinedStrategy = new InlinedAttachmentStrategy();
return inlinedStrategy;
}
const AttachmentStrategy * AttachmentStrategy::hidden() {
if ( !hiddenStrategy )
hiddenStrategy = new HiddenAttachmentStrategy();
return hiddenStrategy;
}
} // namespace KMail
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