Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.geom.handler;

import java.awt.geom.Point2D;

/**

 * This class expands the <code>Handler</code> interface adding support for selection, and

 *  identifying a handler of a geometry.

 * 

 * @see Handler

 *

 * @author Vicente Caballero Navarro

 */

public abstract class AbstractHandler implements Handler {

        /**

         * Identifies each handler of a geometry.

         */

        protected int index;

        /**

         * Position of this handler.

         * 

         * @see #getPoint()

         * @see Handler#set(double, double)

         * @see Handler#move(double, double)

         */

        protected Point2D point;

        /**

         * True when the handler is selected.

         * 

         * @see #select

         * @see #isSelected()

         */

        private boolean select=false;

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.core.Handler#getPoint()

         */

        public Point2D getPoint() {

                return point;

        }

        /**

         * Sets the state of the handler. <code>True</code> if is selected, <code>false</code> if it's not.

         * 

         * @param b <code>true</code> if the handler is selected, <code>false</code>  otherwise

         * 

         * @see #isSelected()

         */

        public void select(boolean b) {

                select=b;

        }

        /**

         * Returns the state of the handler. <code>True</code> if is selected, <code>false</code> if it's not.

         * 

         * @return <code>true</code> if the handler is selected,<code>false</code> otherwise 

         * 

         * @see #select(boolean)

         */

        public boolean isSelected(){

                return select;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.core.Handler#equalsPoint(java.lang.Object)

         */

        public boolean equalsPoint(Object obj) {

                Point2D p1=this.getPoint();

                Point2D p2=((Handler)obj).getPoint();

                if (p1.getX()==p2.getX() && p1.getY()==p2.getY()) {

                        return true;

                }

                return false;

        }

}