/*
  Copyright 2002-2003  Otto Bruggeman <otto.bruggeman@home.nl>

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 2 of
  the License or (at your option) version 3 or any later version
  accepted by the membership of KDE e.V. (or its successor approved
  by the membership of KDE e.V.), which shall act as a proxy 
  defined in Section 14 of version 3 of the license.

  This program 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _KOMPARE_INTERFACE_H
#define _KOMPARE_INTERFACE_H

#include <QtCore/QString>
#include <QtCore/QStringList>
#include <kdemacros.h>

class KConfig;
class KUrl;

class KompareInterfacePrivate;

class KDE_EXPORT KompareInterface
{
public:
	KompareInterface();
	virtual ~KompareInterface();

protected:
	KompareInterface( const KompareInterface& );
	KompareInterface& operator=(const KompareInterface& );

public:
	/**
	 * Open and parse the diff file at url.
	 */
	virtual bool openDiff( const KUrl& diffUrl ) = 0;

	/**
	 * Open and parse the supplied diff output
	 */
	virtual bool openDiff( const QString& diffOutput ) = 0;

	/**
	 * Open and parse the diff3 file at url.
	 */
	virtual bool openDiff3( const KUrl& diff3Url ) = 0;

	/**
	 * Open and parse the supplied diff3 output
	 */
	virtual bool openDiff3( const QString& diff3Output ) = 0;

	/**
	 * Compare, with diff, source with destination, can also be used if you do not
	 * know what source and destination are. The part will try to figure out what
	 * they are (directory, file, diff output file) and call the
	 * appropriate method(s)
	 */
	virtual void compare( const KUrl& sourceFile, const KUrl& destinationFile ) = 0;

	/**
	 * Compare, with diff, source with destination files
	 */
	virtual void compareFiles( const KUrl& sourceFile, const KUrl& destinationFile ) = 0;

	/**
	 * Compare, with diff, source with destination directories
	 */
	virtual void compareDirs ( const KUrl& sourceDir, const KUrl& destinationDir ) = 0;

	/**
	 * Compare, with diff3, originalFile with changedFile1 and changedFile2
	 */
	virtual void compare3Files( const KUrl& originalFile, const KUrl& changedFile1, const KUrl& changedFile2 ) = 0;

	/**
	 * This will show the file and the file with the diff applied
	 */
	virtual void openFileAndDiff( const KUrl& file, const KUrl& diffFile ) = 0;

	/**
	 * This will show the directory and the directory with the diff applied
	 */
	virtual void openDirAndDiff ( const KUrl& dir,  const KUrl& diffFile ) = 0;

	/**
	 * This will set the encoding to use for all files that are read or for the diffoutput
	 */
	virtual void setEncoding( const QString& encoding );

public:
	/**
	 * Warning this should be in class Part in KDE 4.0, not here !
	 * Around that time the methods will disappear here
	 */
	virtual int readProperties( KConfig* config ) = 0;
	virtual int saveProperties( KConfig* config ) = 0;

	/**
	 * Warning this should be in class ReadWritePart in KDE 4.0, not here !
	 * Around that time the method will disappear here
	 */
	virtual bool queryClose() = 0;

protected:
	// Add all variables to the KompareInterfacePrivate class and access them through the kip pointer
	KompareInterfacePrivate* kip;
	QString                  m_encoding;
};

#endif /* _KOMPARE_INTERFACE_H */
