/*
 * DSS - Digital Signature Services
 *
 * Copyright (C) 2013 European Commission, Directorate-General Internal Market and Services (DG MARKT), B-1049 Bruxelles/Brussel
 *
 * Developed by: 2013 ARHS Developments S.A. (rue Nicolas Bové 2B, L-1253 Luxembourg) http://www.arhs-developments.com
 *
 * This file is part of the "DSS - Digital Signature Services" project.
 *
 * "DSS - Digital Signature Services" is free software: you can redistribute it and/or modify it under the terms of
 * the GNU Lesser General Public License as published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 *
 * DSS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * "DSS - Digital Signature Services".  If not, see <http://www.gnu.org/licenses/>.
 */

package eu.europa.ec.markt.dss.commons.swing.mvc.applet;

import java.applet.Applet;
import java.util.HashMap;
import java.util.Map;

import javax.swing.*;

/**
 * TODO
 * <p/>
 * <p/>
 * DISCLAIMER: Project owner DG-MARKT.
 *
 * @author <a href="mailto:dgmarkt.Project-DSS@arhs-developments.com">ARHS Developments</a>
 * @version $Revision: 1016 $ - $Date: 2011-06-17 15:30:45 +0200 (Fri, 17 Jun 2011) $
 */
public abstract class AppletCore extends JApplet {

    private static final long serialVersionUID = 6721104284268815739L;

    protected static final org.slf4j.Logger LOG = org.slf4j.LoggerFactory.getLogger(AppletCore.class);

    private final Map<Class<? extends AppletController>, AppletController> controllers = new HashMap<Class<? extends AppletController>, AppletController>();

    private ParameterProvider parameterProvider;

    /**
     * @param controllerClass
     * @return a controller
     */
    @SuppressWarnings("unchecked")
    public <C extends AppletController> C getController(final Class<C> controllerClass) {
        if (!controllers.containsKey(controllerClass)) {
            throw new RuntimeException("The class controller " + controllerClass.getName() + " cannot be find , please register it");
        }
        return (C) controllers.get(controllerClass);
    }

    /**
     * @return the controllers
     */
    public Map<Class<? extends AppletController>, AppletController> getControllers() {
        return controllers;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.applet.Applet#init()
     */
    @Override
    public void init() {
        super.init();
        try {
            for (final UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
                if (info.getName().equals("Nimbus")) {
                    UIManager.setLookAndFeel(info.getClassName());
                    SwingUtilities.updateComponentTreeUI(this);
                }
            }
        } catch (final Exception exception) {
            LOG.warn("Look and feel Nimbus cannot be installed");
        }
        if (parameterProvider == null) {
            parameterProvider = new AppletParameterProvider(this);
        }
        registerParameters(parameterProvider);
        registerControllers();
        layout(this);
    }

    public void setParameterProvider(ParameterProvider parameterProvider) {
        this.parameterProvider = parameterProvider;
    }

    protected abstract void layout(final AppletCore core);

    protected abstract void registerControllers();

    protected abstract void registerParameters(ParameterProvider parameterProvider);

    public interface ParameterProvider {
        public String getParameter(String parameterName);
    }

    private static class AppletParameterProvider implements ParameterProvider {

        private final Applet applet;

        public AppletParameterProvider(Applet applet) {
            this.applet = applet;
        }

        public String getParameter(String parameterName) {
            return applet.getParameter(parameterName);
        }

    }

}