uitaskrunner.h

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#ifndef uitaskrunner_h
#define uitaskrunner_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        K. Tingdahl
 Date:          December 2007
 RCS:           $Id$
________________________________________________________________________

-*/

#include "uitoolsmod.h"
#include "uidialog.h"
#include "threadlock.h"
#include "task.h"

class uiProgressBar;
class uiLabel;
class Timer;
namespace Threads { class Thread; }


mExpClass(uiTools) uiTaskRunner : public uiDialog
                   , public TaskRunner
{  mODTextTranslationClass(uiTaskRunner);
public:
                        uiTaskRunner(uiParent*,bool dispmsgonerr=true);
                        ~uiTaskRunner();

    bool                execute(Task& t);
    uiString            lastMsg() const         { return prevmessage_; }
    int                 getState() const        { return state_; }
    void                displayMsgOnError(bool yn)      { dispmsgonerr_ = yn; }

protected:

    uiProgressBar*      progbar_;
    uiLabel*            proglbl_;

    Timer&              tim_;
    BufferString        execnm_;
    int                 symbidx_;

    Task*               task_;
    Threads::Lock       dispinfolock_;
    int                 prevtotalnr_;
    int                 prevnrdone_;
    int                 prevpercentage_;
    uiString            prevmessage_;
    uiString            prevnrdonetext_;
    bool                dispmsgonerr_;

    Threads::Lock       statelock_;     
    int                 state_; //-1 finished in error
                                // 0 finished without error
                                // 1 running
    Threads::Thread*    thread_;
    Threads::Lock       uitaskrunnerthreadlock_;
    void                doWork(CallBacker*);    

    uiString            finalizeTask();
    void                updateFields();
    void                onFinalise(CallBacker*);
    void                timerTick(CallBacker*);
    virtual bool        acceptOK(CallBacker*);

    virtual bool        rejectOK(CallBacker*);

    void                init();
};

#endif