Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

* This program 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 2

* of the License, or (at your option) any later version.

* 

* This program 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 this program; if not, write to the Free Software

* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

* MA  02110-1301, USA.

* 

*/

/*

 * AUTHORS (In addition to CIT):

 * 2008 DiSiD Technologies   Create initial base implementation

 */

package org.gvsig.compat;

import org.gvsig.compat.lang.GraphicsUtils;

import org.gvsig.compat.lang.MathUtils;

import org.gvsig.compat.lang.StringUtils;

import org.gvsig.compat.net.Downloader;

import org.gvsig.tools.locator.BaseLocator;

import org.gvsig.tools.locator.Locator;

import org.gvsig.tools.locator.LocatorException;

/**

 * Locator for the libCompat Library. Returns references to the library's main

 * utilities.

 * 

 * @author <a href="mailto:cordin@disid.com">C?sar Ordi?ana</a>

 */

public class CompatLocator extends BaseLocator {

    /**

     * The name of the StringUtils reference.

     */

    public static final String STRINGUTILS_NAME = "StringUtils";

    /**

     * The name of the MathUtils reference.

     */

    public static final String MATHUTILS_NAME = "MathUtils";

    public static final String GRAPHICSUTILS_NAME = "GraphicsUtils";

    /**

     * The description of the StringUtils reference.

     */

    private static final String STRINGUTILS_DESCRIPTION = "Compatible implementation for String Utilities";

    /**

     * The description of the MathUtils reference.

     */

    private static final String MATHUTILS_DESCRIPTION = "Compatible implementation for Math Utilities";

    private static final String GRAPHICSUTILS_DESCRIPTION = "Compatible implementation for Graphics Utilities";

    /**

     * The name and the description for the {@link Downloader} reference.

     */

    public static final String DOWNLOADER_NAME = "Downloader";

    public static final String DOWNLOADER_DESCRIPTION = "Downloader descripction";

    /**

     * Unique instance.

     */

    private static final CompatLocator instance = new CompatLocator();

    /**

     * Return the singleton instance.

     * 

     * @return the singleton instance

     */

    public static CompatLocator getInstance() {

        return instance;

    }

    /**

     * Return a reference to StringUtils.

     * 

     * @return a reference to StringUtils

     * @throws LocatorException

     *             if there is no access to the class or the class cannot be

     *             instantiated

     * @see Locator#get(String)

     */

    public static StringUtils getStringUtils() throws LocatorException {

        return (StringUtils) getInstance().get(STRINGUTILS_NAME);

    }

    /**

     * Return a reference to MathUtils.

     * 

     * @return a reference to MathUtils

     * @throws LocatorException

     *             if there is no access to the class or the class cannot be

     *             instantiated

     * @see Locator#get(String)

     */

    public static MathUtils getMathUtils() throws LocatorException {

        return (MathUtils) getInstance().get(MATHUTILS_NAME);

    }

    /**

     * Registers the Class implementing the MathUtils interface.

     * 

     * @param clazz

     *            implementing the MathUtils interface

     */

    public static void registerMathUtils(Class clazz) {

        getInstance()

                .register(MATHUTILS_NAME, MATHUTILS_DESCRIPTION, clazz);

    }

    /**

     * Registers the Class implementing the StringUtils interface.

     * 

     * @param clazz

     *            implementing the StringUtils interface

     */

    public static void registerStringUtils(Class clazz) {

        getInstance()

                .register(STRINGUTILS_NAME, STRINGUTILS_DESCRIPTION, clazz);

    }

    // ============================================================

    // ============================================================

    // ============================================================

    /**

     * Return a reference to GraphicsUtils.

     * 

     * @return a reference to GraphicsUtils

     * @throws LocatorException

     *             if there is no access to the class or the class cannot be

     *             instantiated

     * @see Locator#get(String)

     */

    public static GraphicsUtils getGraphicsUtils() throws LocatorException {

        return (GraphicsUtils) getInstance().get(GRAPHICSUTILS_NAME);

    }

    /**

     * Registers the Class implementing the GraphicsUtils interface.

     * 

     * @param clazz

     *            implementing the GraphicsUtils interface

     */

    public static void registerGraphicsUtils(Class clazz) {

        getInstance()

                .register(GRAPHICSUTILS_NAME, GRAPHICSUTILS_DESCRIPTION, clazz);

    }

    /**

     * Return a reference to GraphicsUtils.

     * 

     * @return a reference to GraphicsUtils

     * @throws LocatorException

     *             if there is no access to the class or the class cannot be

     *             instantiated

     * @see Locator#get(String)

     */

    public static Downloader getDownloader() throws LocatorException {

        return (Downloader) getInstance().get(DOWNLOADER_NAME);

    }

    /**

     * Registers the Class implementing the GraphicsUtils interface.

     * 

     * @param clazz

     *            implementing the GraphicsUtils interface

     */

    public static void registerDownloader(Class clazz) {

        getInstance()

                .register(DOWNLOADER_NAME, DOWNLOADER_DESCRIPTION, clazz);

    }

}