dummydriver.h

/***************************************************************************
        Copyright (C) 2002-2015 Kentaro Kitagawa
                           kitagawa@phys.s.u-tokyo.ac.jp
        
        This program is free software; you can redistribute it and/or
        modify it under the terms of the GNU Library General Public
        License as published by the Free Software Foundation; either
        version 2 of the License, or (at your option) any later version.
        
        You should have received a copy of the GNU Library General 
        Public License and a list of authors along with this program; 
        see the files COPYING and AUTHORS.
***************************************************************************/
#ifndef DUMMYDRIVER_H_
#define DUMMYDRIVER_H_

#include "driver.h"
#include "interface.h"

class XDummyInterface : public XInterface {
public:
    XDummyInterface(const char *name, bool runtime, const shared_ptr<XDriver> &driver)
        : XInterface(name, runtime, driver), m_bOpened(false)
    {}
    virtual ~XDummyInterface() {}

    virtual void open() throw (XInterfaceError &) {
        m_bOpened = true;
    }
    //! This can be called even if has already closed.
    virtual void close() throw (XInterfaceError &) {
        m_bOpened = false;
    }

    virtual bool isOpened() const {return m_bOpened;}
private:
    bool m_bOpened;
};
template<class tDriver>
class XDummyDriver : public tDriver {
public:
    XDummyDriver(const char *name, bool runtime, Transaction &tr_meas, const shared_ptr<XMeasure> &meas);
    virtual ~XDummyDriver() {}
protected:
    virtual void closeInterface() {interface()->stop();}
    const shared_ptr<XDummyInterface> &interface() const {return m_interface;}
private:
    shared_ptr<XListener> m_lsnOnOpen, m_lsnOnClose;
    void onOpen(const Snapshot &shot, XInterface *);
    void onClose(const Snapshot &shot, XInterface *);
    const shared_ptr<XDummyInterface> m_interface;
};

template<class tDriver>
XDummyDriver<tDriver>::XDummyDriver(const char *name, bool runtime,
    Transaction &tr_meas, const shared_ptr<XMeasure> &meas) :
    tDriver(name, runtime, ref(tr_meas), meas),
    m_interface(XNode::create<XDummyInterface>("Interface", false,
                                               dynamic_pointer_cast<XDriver>(this->shared_from_this()))) {
    meas->interfaces()->insert(tr_meas, m_interface);
    this->iterate_commit([=](Transaction &tr){
        m_lsnOnOpen = tr[ *interface()].onOpen().connectWeakly(
            this->shared_from_this(), &XDummyDriver<tDriver>::onOpen);
        m_lsnOnClose = tr[ *interface()].onClose().connectWeakly(
            this->shared_from_this(), &XDummyDriver<tDriver>::onClose);
    });
}
template<class tDriver>
void
XDummyDriver<tDriver>::onOpen(const Snapshot &shot, XInterface *) {
    try {
        this->start();
    }
    catch (XKameError& e) {
        e.print(this->getLabel() + i18n(": Starting driver failed, because "));
        interface()->stop();
    }
}
template<class tDriver>
void
XDummyDriver<tDriver>::onClose(const Snapshot &shot, XInterface *) {
    try {
        this->stop();
    }
    catch (XKameError& e) {
        e.print(this->getLabel() + i18n(": Stopping driver failed, because "));
    }
}

#endif /*DUMMYDRIVER_H_*/