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/*
This file is part of KMail.
Copyright (c) 2003 Andreas Gungl <a.gungl@gmx.de>
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_FILTERLOG_H
#define KMAIL_FILTERLOG_H
#include <tqobject.h>
#include <tqstringlist.h>
#include <tqstylesheet.h>
namespace KMail {
/**
@short KMail Filter Log Collector.
@author Andreas Gungl <a.gungl@gmx.de>
The filter log helps to collect log information about the
filter process in KMail. It's implemented as singleton,
so it's easy to direct pieces of information to a unique
instance.
It's possible to activate / deactivate logging. All
collected log information can get thrown away, the
next added log entry is the first one until another
clearing.
A signal is emitted whenever a new logentry is added,
when the log was cleared or any log state was changed.
*/
class FilterLog : public QObject
{
Q_OBJECT
public:
/** access to the singleton instance */
static FilterLog * instance();
/** log data types */
enum ContentType
{
meta = 1,
patternDesc = 2,
ruleResult = 4,
patternResult = 8,
appliedAction = 16
};
/** check the logging state */
bool isLogging() { return mLogging; };
/** set the logging state */
void setLogging( bool active )
{
mLogging = active;
emit logStateChanged();
};
/** control the size of the log */
void setMaxLogSize( long size = -1 );
long getMaxLogSize() { return mMaxLogSize; };
/** add/remove a content type to the set of logged ones */
void setContentTypeEnabled( ContentType contentType, bool b )
{
if ( b )
mAllowedTypes |= contentType;
else
mAllowedTypes &= ~contentType;
emit logStateChanged();
};
/** check a content type for inclusion in the set of logged ones */
bool isContentTypeEnabled( ContentType contentType )
{
return mAllowedTypes & contentType;
};
/** add a log entry */
void add( TQString logEntry, ContentType contentType );
/** add a separating line in the log */
void addSeparator() { add( "------------------------------", meta ); };
/** discard collected log data */
void clear()
{
mLogEntries.clear();
mCurrentLogSize = 0;
emit logShrinked();
};
/** get access to the log entries */
const TQStringList & getLogEntries() { return mLogEntries; };
/** dump the log - for testing purposes */
void dump();
/** save the log to a file - returns true if okay */
bool saveToFile( TQString fileName );
/** destructor */
virtual ~FilterLog();
static TQString recode( const TQString & plain ) { return TQStyleSheet::escape(plain); };
signals:
void logEntryAdded( TQString );
void logShrinked();
void logStateChanged();
protected:
/** Non-public constructor needed by the singleton implementation */
FilterLog();
/** The list tqcontains the single log pieces */
TQStringList mLogEntries;
/** the log status */
bool mLogging;
/** max size for kept log items, when reached
the last recently added items are discarded
-1 means unlimited */
long mMaxLogSize;
long mCurrentLogSize;
/** types currently allowed to be legged */
int mAllowedTypes;
void checkLogSize();
private:
static FilterLog * mSelf;
};
} // namespace KMail
#endif // KMAIL_FILTERLOG_H
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