Application: gvSIG desktop

/*

 * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI 

 * for visualizing and manipulating spatial features with geometry and attributes.

 *

 * Copyright (C) 2003 Vivid Solutions

 * 

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

 * 

 * For more information, contact:

 *

 * Vivid Solutions

 * Suite #1A

 * 2328 Government Street

 * Victoria BC  V8T 5G5

 * Canada

 *

 * (250)385-6040

 * www.vividsolutions.com

 */

package com.vividsolutions.jump.util;

import java.util.HashMap;

import java.util.Map;

/**

* String-to-Object map that anyone can use.

* For example, the Options dialog has a single instance, and

* it's stored on the Workbench Blackboard.

*/

public class Blackboard implements Cloneable {

    private HashMap properties = new HashMap();

    /**

     * Used by Java2XML

     */

    public HashMap getProperties() {

        return properties;

    }

    /**

     * Used by Java2XML

     */

    public void setProperties(HashMap properties) {

        this.properties = properties;

    }

    public Blackboard put(String key, Object value) {

        properties.put(key, value);

        return this;

    }

    public Object get(String key) {

        return properties.get(key);

    }

    public Blackboard put(String key, boolean value) {

        put(key, new Boolean(value));

        return this;

    }

    public Blackboard putAll(Map properties) {

        this.properties.putAll(properties);

        return this;

    }

    public boolean get(String key, boolean defaultValue) {

        if (get(key) == null) {

            put(key, defaultValue);

        }

        return getBoolean(key);

    }

    public boolean getBoolean(String key) {

        return ((Boolean) get(key)).booleanValue();

    }

    public Blackboard put(String key, int value) {

        put(key, new Integer(value));

        return this;

    }

    public Blackboard put(String key, double value) {

        put(key, new Double(value));

        return this;

    }

    public double get(String key, double defaultValue) {

        if (get(key) == null) {

            put(key, defaultValue);

        }

        return getDouble(key);

    }

    public int get(String key, int defaultValue) {

        if (get(key) == null) {

            put(key, defaultValue);

        }

        return getInt(key);

    }

    public int getInt(String key) {

        return ((Integer) get(key)).intValue();

    }

    public double getDouble(String key) {

        return ((Double) get(key)).doubleValue();

    }

    public Object get(String key, Object defaultValue) {

        if (get(key) == null) {

            put(key, defaultValue);

        }

        return get(key);

    }

    public Object clone() {

        return new Blackboard().putAll(properties);

    }

}