barrier/lib/base/ILogOutputter.h

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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2002 Chris Schoeneman, Nick Bolton, Sorin Sbarnea
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package 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.
2010-06-20 17:38:51 +00:00
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ILOGOUTPUTTER_H
#define ILOGOUTPUTTER_H
#include "IInterface.h"
#include "CLog.h"
//! Outputter interface
/*!
Type of outputter interface. The logger performs all output through
outputters. ILogOutputter overrides must not call any log functions
directly or indirectly.
*/
class ILogOutputter : public IInterface {
public:
typedef CLog::ELevel ELevel;
//! @name manipulators
//@{
//! Open the outputter
/*!
Opens the outputter for writing. Calling this method on an
already open outputter must have no effect.
*/
virtual void open(const char* title) = 0;
//! Close the outputter
/*!
Close the outputter. Calling this method on an already closed
outputter must have no effect.
*/
virtual void close() = 0;
//! Show the outputter
/*!
Causes the output to become visible. This generally only makes sense
for a logger in a graphical user interface. Other implementations
will do nothing. Iff \p showIfEmpty is \c false then the implementation
may optionally only show the log if it's not empty.
*/
virtual void show(bool showIfEmpty) = 0;
//! Write a message with level
/*!
Writes \c message, which has the given \c level, to a log.
If this method returns true then CLog will stop passing the
message to all outputters in the outputter chain, otherwise
it continues. Most implementations should return true.
*/
virtual bool write(ELevel level, const char* message) = 0;
//@}
};
#endif