GLObjectValuePassConnector.h

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/****************************************************************************/
// Class passing values from a GUIGlObject to another object
/****************************************************************************/
// SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
// Copyright (C) 2001-2011 DLR (http://www.dlr.de/) and contributors
/****************************************************************************/
//
//   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.
//
/****************************************************************************/
#ifndef GLObjectValuePassConnector_h
#define GLObjectValuePassConnector_h


// ===========================================================================
// included modules
// ===========================================================================
#ifdef _MSC_VER
#include <windows_config.h>
#else
#include <config.h>
#endif

#include <algorithm>
#include <vector>
#include <map>
#include <utils/common/ValueSource.h>
#include <utils/common/ValueRetriever.h>
#include <utils/gui/globjects/GUIGlObject.h>
#include <utils/foxtools/MFXMutex.h>


// ===========================================================================
// class declarations
// ===========================================================================
class GUIGlObject;


// ===========================================================================
// class definitions
// ===========================================================================
template<typename T>
class GLObjectValuePassConnector {
public:
    GLObjectValuePassConnector(GUIGlObject& o, ValueSource<T> *source, ValueRetriever<T> *retriever) throw()
        : myObject(o), mySource(source), myRetriever(retriever) { /*, myIsInvalid(false) */
        myLock.lock();
        myContainer.push_back(this);
        myLock.unlock();
    }


    virtual ~GLObjectValuePassConnector() throw() {
        myLock.lock();
        typename std::vector< GLObjectValuePassConnector<T>* >::iterator i = std::find(myContainer.begin(), myContainer.end(), this);
        if (i!=myContainer.end()) {
            myContainer.erase(i);
        }
        myLock.unlock();
        delete mySource;
    }



    static void updateAll() throw() {
        myLock.lock();
        std::for_each(myContainer.begin(), myContainer.end(), std::mem_fun(&GLObjectValuePassConnector<T>::passValue));
        myLock.unlock();
    }


    static void clear() throw() {
        myLock.lock();
        while (!myContainer.empty()) {
            delete(*myContainer.begin());
        }
        myContainer.clear();
        myLock.unlock();
    }


    static void removeObject(GUIGlObject& o) throw() {
        myLock.lock();
        for (typename std::vector< GLObjectValuePassConnector<T>* >::iterator i=myContainer.begin(); i!=myContainer.end();) {
            if ((*i)->myObject.getGlID()==o.getGlID()) {
                i = myContainer.erase(i);
            } else {
                ++i;
            }
        }
        myLock.unlock();
    }


protected:
    virtual bool passValue() throw() {
        myRetriever->addValue(mySource->getValue());
        return true;
    }


protected:
    GUIGlObject& myObject;

    ValueSource<T> *mySource;

    ValueRetriever<T> *myRetriever;

    static MFXMutex myLock;

    static std::vector< GLObjectValuePassConnector<T>* > myContainer;


};


template<typename T>
std::vector< GLObjectValuePassConnector<T>* > GLObjectValuePassConnector<T>::myContainer;
template<typename T>
MFXMutex GLObjectValuePassConnector<T>::myLock;


#endif

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