com.stefanbrenner.droplet.model.internal.Configuration.java Source code

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Here is the source code for com.stefanbrenner.droplet.model.internal.Configuration.java

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/*******************************************************************************
 * Project: Droplet - Toolkit for Liquid Art Photographers
 * Copyright (C) 2012 Stefan Brenner
 *
 * This file is part of Droplet.
 *
 * Droplet is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Droplet 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Droplet. If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package com.stefanbrenner.droplet.model.internal;

import gnu.io.CommPortIdentifier;

import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.net.URI;
import java.util.List;
import java.util.prefs.Preferences;

import org.apache.commons.lang3.StringUtils;

import com.stefanbrenner.droplet.service.IDropletMessageProtocol;
import com.stefanbrenner.droplet.service.ISerialCommunicationService;
import com.stefanbrenner.droplet.service.impl.ArduinoService;
import com.stefanbrenner.droplet.service.impl.DropletMessageProtocol;
import com.stefanbrenner.droplet.utils.PluginLoader;

/**
 * Simple preferences wrapper.
 * 
 * @author Stefan Brenner
 */
public final class Configuration {

    public static final String CONF_SERIAL_COMM_PROVIDER = "Configuration.SerialCommProvider"; //$NON-NLS-1$

    public static final String CONF_MESSAGE_PROTOCOL_PROVIDER = "Configuration.MessageProtocolProvider"; //$NON-NLS-1$

    public static final String CONF_PROCESSING_ENABLED = "Configuration.Processing.Enabled"; //$NON-NLS-1$

    public static final String CONF_WATCH_FOLDER_URI = "Configuration.WatchFolderURI"; //$NON-NLS-1$

    public static final String CONF_METADATA_COMMENTS = "Configuration.Metadata.Comments"; //$NON-NLS-1$

    public static final String CONF_METADATA_TAGS = "Configuration.Metadata.Tags"; //$NON-NLS-1$

    public static final String CONF_SERIAL_COMM_PORT = "Configuration.SerialCommPort"; //$NON-NLS-1$

    private static final Preferences PREFS = Preferences.userNodeForPackage(Configuration.class);

    private static final ISerialCommunicationService DEFAULT_SERIAL_COMM_PROVIDER = new ArduinoService();

    private Configuration() {
        // no need to instantiate this class
    }

    public static ISerialCommunicationService getSerialCommProvider() {
        String string = Configuration.PREFS.get(Configuration.CONF_SERIAL_COMM_PROVIDER, null);
        List<ISerialCommunicationService> plugins = PluginLoader.getPlugins(ISerialCommunicationService.class);
        for (ISerialCommunicationService commService : plugins) {
            if (StringUtils.equals(commService.getClass().getCanonicalName(), string)) {
                return commService;
            }
        }
        // if no provider was found we use our own arduino service instead
        return Configuration.DEFAULT_SERIAL_COMM_PROVIDER;
    }

    public static void setSerialCommProvider(final ISerialCommunicationService commService) {
        ISerialCommunicationService oldService = Configuration.getSerialCommProvider();
        Configuration.PREFS.put(Configuration.CONF_SERIAL_COMM_PROVIDER, commService.getClass().getCanonicalName());
        Configuration.support.firePropertyChange(Configuration.CONF_SERIAL_COMM_PROVIDER, oldService, commService);
    }

    private static final String PREF_MESSAGE_PROTOCOL = "Droplet.MessageProtocolProvider"; //$NON-NLS-1$

    private static final IDropletMessageProtocol DEFAULT_MESSAGE_PROTOCOL_PROVIDER = new DropletMessageProtocol();

    public static IDropletMessageProtocol getMessageProtocolProvider() {
        String string = Configuration.PREFS.get(Configuration.PREF_MESSAGE_PROTOCOL, null);
        List<IDropletMessageProtocol> plugins = PluginLoader.getPlugins(IDropletMessageProtocol.class);
        for (IDropletMessageProtocol messageService : plugins) {
            if (StringUtils.equals(messageService.getClass().getCanonicalName(), string)) {
                return messageService;
            }
        }
        // if no provider was found we use our own message protocol provider
        return Configuration.DEFAULT_MESSAGE_PROTOCOL_PROVIDER;
    }

    public static void setMessageProtocolProvider(final IDropletMessageProtocol messageProtocol) {
        IDropletMessageProtocol oldProtocol = Configuration.getMessageProtocolProvider();
        Configuration.PREFS.put(Configuration.PREF_MESSAGE_PROTOCOL, messageProtocol.getClass().getCanonicalName());
        Configuration.support.firePropertyChange(Configuration.CONF_MESSAGE_PROTOCOL_PROVIDER, oldProtocol,
                messageProtocol);
    }

    public static void setProcessingEnabled(final boolean enabled) {
        Configuration.PREFS.putBoolean(Configuration.CONF_PROCESSING_ENABLED, enabled);
    }

    public static boolean isProcessingEnabled() {
        return Configuration.PREFS.getBoolean(CONF_PROCESSING_ENABLED, false);
    }

    public static void setWathFolder(final URI watchFolderURI) {
        Configuration.PREFS.put(Configuration.CONF_WATCH_FOLDER_URI, watchFolderURI.toString());
    }

    public static URI getWatchFolderURI() {
        String uri = Configuration.PREFS.get(Configuration.CONF_WATCH_FOLDER_URI, null);
        if (StringUtils.isNotBlank(uri)) {
            return URI.create(uri);
        }
        return null;
    }

    public static void setMetadataComments(String comments) {
        Configuration.PREFS.put(Configuration.CONF_METADATA_COMMENTS, comments);
    }

    public static String getMetadataComments() {
        return Configuration.PREFS.get(CONF_METADATA_COMMENTS, StringUtils.EMPTY);
    }

    public static void setMetadataTags(String tags) {
        Configuration.PREFS.put(Configuration.CONF_METADATA_TAGS, tags);
    }

    public static String getMetadataTags() {
        return Configuration.PREFS.get(CONF_METADATA_TAGS, StringUtils.EMPTY);
    }

    public static void setSerialCommPort(final CommPortIdentifier port) {
        if (port != null) {
            Configuration.PREFS.put(Configuration.CONF_SERIAL_COMM_PORT, port.getName());
        }
    }

    public static String getSerialCommPort() {
        return Configuration.PREFS.get(Configuration.CONF_SERIAL_COMM_PORT, null);
    }

    // simple static notification support

    private static PropertyChangeSupport support = new PropertyChangeSupport(new Configuration());

    public static void addPropertyChangeListener(final String propertyName, final PropertyChangeListener listener) {
        Configuration.support.addPropertyChangeListener(propertyName, listener);
    }

    public static void removePropertyChangeListener(final String propertyName,
            final PropertyChangeListener listener) {
        Configuration.support.removePropertyChangeListener(propertyName, listener);
    }

}