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The core artifact of AutomataLib. This library contains concrete implementations for many of the automaton model interfaces defined in the API artifact, as well as abstract base classes that facilitate implementing new automaton model classes. Note that concrete algorithms (traversal, reachability analysis etc.) are not in the scope of this artifact.

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/* Copyright (C) 2013-2018 TU Dortmund
 * This file is part of AutomataLib, http://www.automatalib.net/.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.automatalib.visualization;

import java.util.HashMap;
import java.util.Map;
import java.util.ServiceLoader;

public class VPManager {

    private final Map providers = new HashMap<>();
    private VisualizationProvider bestProvider = new DummyVP();

    public void load() {
        providers.clear();
        ServiceLoader loader = ServiceLoader.load(VisualizationProvider.class);

        bestProvider = new DummyVP();
        for (VisualizationProvider vp : loader) {
            registerProvider(vp);
        }
    }

    public void registerProvider(VisualizationProvider vp) {
        if (!vp.checkUsable()) {
            return;
        }
        providers.put(vp.getId(), vp);

        if (vp.getPriority() > bestProvider.getPriority()) {
            bestProvider = vp;
        }
    }

    public VisualizationProvider getBestProvider() {
        return bestProvider;
    }

    public VisualizationProvider getProviderByName(String name) {
        return providers.get(name);
    }

}