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- /*
- *
- * $Id: k3bjob.h 619556 2007-01-03 17:38:12Z trueg $
- * Copyright (C) 2003 Sebastian Trueg <trueg@k3b.org>
- *
- * This file is part of the K3b project.
- * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
- *
- * 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) any later version.
- * See the file "COPYING" for the exact licensing terms.
- */
-
-
- #ifndef K3BJOB_H
- #define K3BJOB_H
-
- #include <qobject.h>
- #include <qptrlist.h>
- #include "k3bjobhandler.h"
- #include "k3b_export.h"
-
- class K3bDoc;
- namespace K3bDevice {
- class Device;
- }
-
-
- /**
- * This is the baseclass for all the jobs in K3b which actually do the work like burning a cd!
- * The K3bJob object takes care of registering with the k3bcore or with a parent K3bJob.
- *
- * Every job has a jobhandler which can be another job (in which case the job is handled as
- * a subjob) or an arbitrary class implementing the K3bJobHandler interface.
- *
- * A Job should never create any widgets. User interaction should be done through the methods
- * questionYesNo, waitForMedia.
- *
- * @author Sebastian Trueg
- */
- class LIBK3B_EXPORT K3bJob : public QObject, public K3bJobHandler
- {
- Q_OBJECT
-
- public:
- virtual ~K3bJob();
-
- /**
- * \reimplemented from K3bJobHandler
- */
- bool isJob() const { return true; }
-
- K3bJobHandler* jobHandler() const { return m_jobHandler; }
-
- /**
- * Is the job active?
- * The default implementation is based on the jobStarted() and jobFinished()
- * methods and there is normally no need to reimplement this.
- */
- virtual bool active() const { return m_active; }
-
- /**
- * The default implementation is based on the canceled() signal.
- *
- * This means that one cannot count on this value being valid
- * in a slot connected to the canceled() signal. It is, however, save
- * to call this method from a slot connected to the finished() signal
- * in case the job makes proper usage of the jobStarted/jobFinished
- * methods.
- */
- virtual bool hasBeenCanceled() const { return m_canceled; }
-
- virtual QString jobDescription() const { return "K3bJob"; }
- virtual QString jobDetails() const { return QString::null; }
-
- /**
- * @returns the number of running subjobs.
- * this is useful for proper cancellation of jobs.
- */
- unsigned int numRunningSubJobs() const;
-
- const QPtrList<K3bJob>& runningSubJobs() const { return m_runningSubJobs; }
-
- /**
- * \deprecated
- */
- virtual void connectSubJob( K3bJob* subJob,
- const char* finishedSlot = 0,
- bool progress = false,
- const char* progressSlot = 0,
- const char* subProgressSot = 0,
- const char* processedSizeSlot = 0,
- const char* processedSubSizeSlot = 0 );
-
- static const char* DEFAULT_SIGNAL_CONNECTION;
-
- /**
- * \param newTaskSlot If DEFAULT_SIGNAL_CONNECTION the newTask signal from the subjob will
- * be connected to the newSubTask signal
- * \param newSubTaskSlot If DEFAULT_SIGNAL_CONNECTION the newSubTask signal from the subjob
- * will create an infoMessage signal
- * \param progressSlot If DEFAULT_SIGNAL_CONNECTION the percent signal of the subjob will be
- * connected to the subPercent signal.
- * debuggingOutput and infoMessage will always be direcctly connected.
- *
- * If a parameter is set to 0 it will not be connected at all
- */
- virtual void connectSubJob( K3bJob* subJob,
- const char* finishedSlot = DEFAULT_SIGNAL_CONNECTION,
- const char* newTaskSlot = DEFAULT_SIGNAL_CONNECTION,
- const char* newSubTaskSlot = DEFAULT_SIGNAL_CONNECTION,
- const char* progressSlot = DEFAULT_SIGNAL_CONNECTION,
- const char* subProgressSlot = DEFAULT_SIGNAL_CONNECTION,
- const char* processedSizeSlot = DEFAULT_SIGNAL_CONNECTION,
- const char* processedSubSizeSlot = DEFAULT_SIGNAL_CONNECTION );
-
- /**
- * Message types to be used in combination with the infoMessage signal.
- *
- * \see infoMessage()
- */
- enum MessageType {
- INFO, /**< Informational message. For example a message that informs the user about what is
- currently going on */
- WARNING, /**< A warning message. Something did not go perfectly but the job may continue. */
- ERROR, /**< An error. Only use this message type if the job will actually fail afterwards
- with a call to jobFinished( false ) */
- SUCCESS /**< This message type may be used to inform the user that a sub job has
- been successfully finished. */
- };
-
- /**
- * reimplemented from K3bJobHandler
- */
- int waitForMedia( K3bDevice::Device*,
- int mediaState = K3bDevice::STATE_EMPTY,
- int mediaType = K3bDevice::MEDIA_WRITABLE_CD,
- const QString& message = QString::null );
-
- /**
- * reimplemented from K3bJobHandler
- */
- bool questionYesNo( const QString& text,
- const QString& caption = QString::null,
- const QString& yesText = QString::null,
- const QString& noText = QString::null );
-
- /**
- * reimplemented from K3bJobHandler
- */
- void blockingInformation( const QString& text,
- const QString& caption = QString::null );
-
- public slots:
- /**
- * This is the slot that starts the job. The first call should always
- * be jobStarted().
- *
- * Once the job has finished it has to call jobFinished() with the result as
- * a parameter.
- *
- * \see jobStarted()
- * \see jobFinished()
- */
- virtual void start() = 0;
-
- /**
- * This slot should cancel the job. The job has to emit the canceled() signal and make a call
- * to jobFinished().
- * It is not important to do any of those two directly in this slot though.
- */
- virtual void cancel() = 0;
-
- void setJobHandler( K3bJobHandler* );
-
- signals:
- void infoMessage( const QString& msg, int type );
- void percent( int p );
- void subPercent( int p );
- void processedSize( int processed, int size );
- void processedSubSize( int processed, int size );
- void newTask( const QString& job );
- void newSubTask( const QString& job );
- void debuggingOutput(const QString&, const QString&);
- void data( const char* data, int len );
- void nextTrack( int track, int numTracks );
-
- void canceled();
-
- /**
- * Emitted once the job has been started. Never emit this signal directly.
- * Use jobStarted() instead, otherwise the job will not be properly registered
- */
- void started();
-
- /**
- * Emitted once the job has been finshed. Never emit this signal directly.
- * Use jobFinished() instead, otherwise the job will not be properly deregistered
- */
- void finished( bool success );
-
- protected:
- /**
- * \param hdl the handler of the job. This allows for some user interaction without
- * specifying any details (like the GUI).
- * The job handler can also be another job. In that case this job is a sub job
- * and will be part of the parents running sub jobs.
- *
- * \see runningSubJobs()
- * \see numRunningSubJobs()
- */
- K3bJob( K3bJobHandler* hdl, QObject* parent = 0, const char* name = 0 );
-
- /**
- * Call this in start() to properly register the job and emit the started() signal.
- * Do never emit the started() signal manually.
- *
- * Always call K3bJob::jobStarted in reimplementations.
- */
- virtual void jobStarted();
-
- /**
- * Call this at the end of the job to properly deregister the job and emit the finished() signal.
- * Do never emit the started() signal manually.
- *
- * Always call K3bJob::jobFinished in reimplementations.
- */
- virtual void jobFinished( bool success );
-
- private slots:
- void slotCanceled();
- void slotNewSubTask( const QString& str );
-
- private:
- void registerSubJob( K3bJob* );
- void unregisterSubJob( K3bJob* );
-
- K3bJobHandler* m_jobHandler;
- QPtrList<K3bJob> m_runningSubJobs;
-
- bool m_canceled;
- bool m_active;
-
- class Private;
- Private* d;
- };
-
-
- /**
- * Every job used to actually burn a medium is derived from K3bBurnJob.
- * This class implements additional signals like buffer status or writing speed
- * as well as a handling of the used writing application.
- */
- class LIBK3B_EXPORT K3bBurnJob : public K3bJob
- {
- Q_OBJECT
-
- public:
- K3bBurnJob( K3bJobHandler* hdl, QObject* parent = 0, const char* name = 0 );
- virtual ~K3bBurnJob();
-
- /**
- * The writing device used by this job.
- */
- virtual K3bDevice::Device* writer() const { return 0; }
-
- /**
- * use K3b::WritingApp
- */
- int writingApp() const { return m_writeMethod; }
-
- /**
- * K3b::WritingApp "ored" together
- */
- virtual int supportedWritingApps() const;
-
- public slots:
- /**
- * use K3b::WritingApp
- */
- void setWritingApp( int w ) { m_writeMethod = w; }
-
- signals:
- void bufferStatus( int );
-
- void deviceBuffer( int );
-
- /**
- * @param speed current writing speed in Kb
- * @param multiplicator use 150 for CDs and 1380 for DVDs
- * FIXME: maybe one should be able to ask the burnjob if it burns a CD or a DVD and remove the
- * multiplicator parameter)
- */
- void writeSpeed( int speed, int multiplicator );
-
- /**
- * This signal may be used to inform when the burning starts or ends
- * The BurningProgressDialog for example uses it to enable and disable
- * the buffer and writing speed displays.
- */
- void burning(bool);
-
- private:
- int m_writeMethod;
-
- class Private;
- Private* d;
- };
- #endif
-