inkscape/src/sp-factory.cpp

	sp-factory.cpp revision 0a7b156efd8eda8ee5e09f6fb37a83f308b9fc82
#include "sp-factory.h"

#include <stdexcept>

#include "sp-object.h"
#include "xml/node.h"

SPFactory& SPFactory::instance() {
    static SPFactory factory;
    return factory;
}

bool SPFactory::registerObject(std::string id, std::function<SPObject*()> createFunction) {
    return this->objectMap.insert(std::make_pair(id, createFunction)).second;
}

SPObject* SPFactory::createObject(const Inkscape::XML::Node& id) const {
    std::map<std::string, std::function<SPObject*()>>::const_iterator entry;

    switch (id.type()) {
        case Inkscape::XML::TEXT_NODE:
            entry = this->objectMap.find("string");
            break;

        case Inkscape::XML::ELEMENT_NODE: {
            gchar const* const type_name = id.attribute("sodipodi:type");

            if (type_name) {
                entry = this->objectMap.find(type_name);
            } else {
                entry = this->objectMap.find(id.name());
            }

            break;
        }
        default:
            entry = this->objectMap.end();
    }

    if (entry == this->objectMap.end()) {
        g_warning("Factory: Type \"%s\" not registered!", id.name());

        return 0;
    }

    return (entry->second)();
}