RResourceList.h

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#ifndef RRESOURCELIST_H
#define RRESOURCELIST_H
 
#include "core_global.h"
 
#include <QDebug>
#include <QString>
#include <QMap>
 
#include "RS.h"
 
template <class T>
class QCADCORE_EXPORT RResourceList {
public:
//    void init() {
//    }
 
    void uninit() {
        QMapIterator<QString, T*> it(resMap);
 
        while (it.hasNext()) {
            it.next();
            delete it.value();
        }
 
        resMap.clear();
        resSubstitutionMap.clear();
    }
 
    QStringList getNames() {
        return resMap.keys();
    }
 
    QString getSubName(const QString& resName, int rec=0) {
        // check substitution map first:
        if (RS::mapContainsCaseInsensitive(resSubstitutionMap, resName)) {
            // substitution found:
            QString subName = RS::mapValueCaseInsensitive(resSubstitutionMap, resName);
            if (subName.compare(resName, Qt::CaseInsensitive)==0 || rec>16) {
                qWarning() << "recursive resource substitution:" << resName << "->" << subName;
                // cannot substitute font with itself (avoid recursion):
                return QString();
            }
            return getSubName(subName, ++rec);
        }
        return resName;
    }
 
    T* get(const QString& resName, bool substitute = true) {
        QString resNameSub = resName;
        if (substitute) {
            resNameSub = getSubName(resName);
        }
 
        // check if resource is available:
        if (!RS::mapContainsCaseInsensitive(resMap, resNameSub)) {
            return NULL;
        }
 
        T* res = RS::mapValueCaseInsensitive(resMap, resNameSub);
        if (res==NULL) {
            qWarning("RResourceList::get: list contains NULL resource.");
            Q_ASSERT(false);
            return NULL;
        }
 
        if (!res->isLoaded()) {
            res->load();
        }
 
        return res;
    }
 
public:
    QMap<QString, T*> resMap;
    QMap<QString, QString> resSubstitutionMap;
};
 
//template <class T> QMap<QString, T*> RResourceList<T>::resMap;
//template <class T> QMap<QString, QString> RResourceList<T>::resSubstitutionMap;
 
#endif