code: /*
   * Copyright (c) 2008-2019 Emmanuel Dupuy.
   * This project is distributed under the GPLv3 license.
   * This is a Copyleft license that gives the user the right to use,
   * copy and modify the code freely for non-commercial purposes.
   */
  
  package org.jd.gui.service.mainpanel;
  
  import org.jd.gui.api.model.Container;
  import org.jd.gui.service.extension.ExtensionService;
  import org.jd.gui.spi.PanelFactory;
  
  import java.util.Collection;
  import java.util.HashMap;
  
  public class PanelFactoryService {
      protected static final PanelFactoryService PANEL_FACTORY_SERVICE = new PanelFactoryService();
  
      public static PanelFactoryService getInstance() { return PANEL_FACTORY_SERVICE; }
  
      protected HashMap<String, PanelFactory> mapProviders = new HashMap<>();
  
      protected PanelFactoryService() {
          Collection<PanelFactory> providers = ExtensionService.getInstance().load(PanelFactory.class);
  
          for (PanelFactory provider : providers) {
              for (String type : provider.getTypes()) {
                  mapProviders.put(type, provider);
              }
          }
      }
  
      public PanelFactory get(Container container) {
          PanelFactory factory = mapProviders.get(container.getType());
          return (factory != null) ? factory : mapProviders.get("default");
      }
  }
  