GLObjectValuePassConnector.h

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/****************************************************************************/
// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
// Copyright (C) 2001-2024 German Aerospace Center (DLR) and others.
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0/
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License 2.0 are satisfied: GNU General Public License, version 2
// or later which is available at
// https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
/****************************************************************************/
// Class passing values from a GUIGlObject to another object
/****************************************************************************/
#pragma once
#include <config.h>
 
#include <algorithm>
#include <vector>
#include <map>
#include <functional>
#include <utils/foxtools/fxheader.h>
#include <utils/common/ValueSource.h>
#include <utils/common/ValueRetriever.h>
#include <utils/gui/globjects/GUIGlObject.h>
 
 
// ===========================================================================
// class declarations
// ===========================================================================
class GUIGlObject;
 
 
// ===========================================================================
// class definitions
// ===========================================================================
template<typename T>
class GLObjectValuePassConnector {
public:
    GLObjectValuePassConnector(GUIGlObject& o, ValueSource<T>* source, ValueRetriever<T>* retriever)
        : myObject(o), mySource(source), myRetriever(retriever) { /*, myIsInvalid(false) */
        FXMutexLock locker(myLock);
        myContainer.push_back(this);
    }
 
 
    virtual ~GLObjectValuePassConnector() {
        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() {
        FXMutexLock locker(myLock);
        for (GLObjectValuePassConnector<T>* const connector : myContainer) {
            connector->passValue();
        }
    }
 
 
    static void clear() {
        FXMutexLock locker(myLock);
        while (!myContainer.empty()) {
            delete (*myContainer.begin());
        }
        myContainer.clear();
    }
 
 
    static void removeObject(GUIGlObject& o) {
        FXMutexLock locker(myLock);
        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;
            }
        }
    }
 
 
protected:
    virtual bool passValue() {
        myRetriever->addValue(mySource->getValue());
        return true;
    }
 
 
protected:
    GUIGlObject& myObject;
 
    ValueSource<T>* mySource;
 
    ValueRetriever<T>* myRetriever;
 
    static FXMutex myLock;
 
    static std::vector< GLObjectValuePassConnector<T>* > myContainer;
 
 
private:
    GLObjectValuePassConnector<T>(const GLObjectValuePassConnector<T>&);
 
    GLObjectValuePassConnector<T>& operator=(const GLObjectValuePassConnector<T>&);
 
 
};
 
 
template<typename T>
std::vector< GLObjectValuePassConnector<T>* > GLObjectValuePassConnector<T>::myContainer;
template<typename T>
FXMutex GLObjectValuePassConnector<T>::myLock;