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-            fjp
+/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
+ *
  * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
+ *
  * 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:
+ *
  *  Generalitat Valenciana
  *   Conselleria d'Infraestructures i Transport
  *   Av. Blasco Ib??ez, 50
  *   46010 VALENCIA
  *   SPAIN
+ *
  *      +34 963862235
  *   gvsig@gva.es
  *      www.gvsig.gva.es
+ *
  *    or
+ *
  *   IVER T.I. S.A
  *   Salamanca 50
  *   46005 Valencia
  *   Spain
+ *
  *   +34 963163400
  *   dac@iver.es
  */
-            fernando
+package com.iver.cit.gvsig.fmap;
 import java.awt.geom.Rectangle2D;
-            caballero
+import com.iver.utiles.XMLEntity;
             vcaballero
             caballero
-            vcaballero
+/**
-            vcaballero
+ * Clase que gestiona los diferentes extent por los que ha pasado la vista.
             vcaballero
  * @author Vicente Caballero Navarro
  */
-            fernando
+public class ExtentHistory {
-            vcaballero
+        private int NUMREC;
         private Rectangle2D[] extents;
         private int num = 0;
             fernando
-            vcaballero
+        /**
          * Creates a new ExtentsHistory object.
          */
         public ExtentHistory() {
                 NUMREC = 10;
-            fernando
+                extents = new Rectangle2D[NUMREC];
             vcaballero
             fernando
-            vcaballero
+        /**
          * Creates a new ExtentsHistory object.
+         *
          * @param numEntries Numero de entradas que se guardan en el historico de
          *                   rect?ngulos, por defecto 20
          */
         public ExtentHistory(int numEntries) {
                 NUMREC = numEntries;
+        }
             fernando
-            vcaballero
+        /**
          * Pone un nuevo rect?ngulo al final del array
+         *
          * @param ext Rect?ngulo que se a?ade al hist?rico
          */
         public void put(Rectangle2D ext) {
                 if ((ext != null) && ((num < 1) || (ext != extents[num - 1]))) {
                         if (num < (NUMREC)) {
                                 extents[num] = ext;
                                 num = num + 1;
                         } else {
                                 for (int i = 0; i < (NUMREC - 1); i++) {
                                         extents[i] = extents[i + 1];
+                                }
             fernando
-            vcaballero
+                                extents[num - 1] = ext;
+                        }
+                }
+        }
             fernando
-            vcaballero
+        /**
          * Devuelve true si hay alg?n rect?ngulo en el hist?rico
+         *
          * @return true o false en caso de que haya o no haya rect?ngulos
          */
         public boolean hasPrevious() {
                 return num > 0;
+        }
             fernando
-            vcaballero
+        /**
          * Obtiene el ?ltimo rect?ngulo que se a?adi? al hist?rico
+         *
          * @return Ultimo rect?ngulo a?adido
          */
         public Rectangle2D get() {
                 Rectangle2D ext = extents[num - 1];
             fernando
-            vcaballero
+                return ext;
+        }
             fernando
-            vcaballero
+        /**
          * Devuelve el ?ltimo rect?ngulo del hist?rico y lo elimina del mismo
+         *
          * @return Ultimo rect?ngulo a?adido
          */
         public Rectangle2D removePrev() {
-            jaume
+                Rectangle2D ext = extents[--num];
-            vcaballero
+                return ext;
+        }
             vcaballero
-            vcaballero
+        /**
          * Devuelve el XMLEntity con la informaci?n para poder reproducir de nuevo
          * el objeto actual.
+         *
          * @return XMLEntity.
          */
         public XMLEntity getXMLEntity() {
                 XMLEntity xml = new XMLEntity();
-            vcaballero
+                xml.putProperty("className",this.getClass().getName());
-            vcaballero
+                xml.putProperty("num", num);
                 xml.putProperty("numrec", NUMREC);
             vcaballero
-            vcaballero
+                for (int i = 0; i < NUMREC; i++) {
                         if (extents[i] != null) {
                                 xml.putProperty("extent" + i + "X", extents[i].getX());
                                 xml.putProperty("extent" + i + "Y", extents[i].getY());
                                 xml.putProperty("extent" + i + "W", extents[i].getWidth());
                                 xml.putProperty("extent" + i + "H", extents[i].getHeight());
+                        }
+                }
             vcaballero
-            vcaballero
+                return xml;
+        }
             vcaballero
-            vcaballero
+        /**
          * Crea un nuevo ExtentHistory a partir del XMLEntity.
+         *
          * @param xml XMLEntity
+         *
          * @return Nuevo ExtentHistory.
          */
-            fernando
+        public static ExtentHistory createFromXML03(XMLEntity xml) {
                 ExtentHistory eh = new ExtentHistory();
                 eh.num = xml.getIntProperty("num");
                 eh.NUMREC = xml.getIntProperty("numrec");
                 for (int i = 0; i < eh.NUMREC; i++) {
                         try {
                                 eh.extents[i] = new Rectangle2D.Double(xml.getDoubleProperty(
                                                         "extent" + i + "X"),
                                                 xml.getDoubleProperty("extent" + i + "Y"),
                                                 xml.getDoubleProperty("extent" + i + "W"),
                                                 xml.getDoubleProperty("extent" + i + "H"));
                         } catch (Exception e) {
                                 ///System.out.println("En las ExtentHistory =" + e); //TODO o se captura de alguna forma o se mete un nuevo parametro en el xml para saber exactamente cuantos rect?gulos se han a?adido.
+                        }
+                }
                 return eh;
+        }
         /**
          * Crea un nuevo ExtentHistory a partir del XMLEntity.
+         *
          * @param xml XMLEntity
+         *
          * @return Nuevo ExtentHistory.
          */
-            vcaballero
+        public static ExtentHistory createFromXML(XMLEntity xml) {
                 ExtentHistory eh = new ExtentHistory();
                 eh.num = xml.getIntProperty("num");
                 eh.NUMREC = xml.getIntProperty("numrec");
             vcaballero
-            vcaballero
+                for (int i = 0; i < eh.NUMREC; i++) {
                         try {
                                 eh.extents[i] = new Rectangle2D.Double(xml.getDoubleProperty(
                                                         "extent" + i + "X"),
                                                 xml.getDoubleProperty("extent" + i + "Y"),
                                                 xml.getDoubleProperty("extent" + i + "W"),
                                                 xml.getDoubleProperty("extent" + i + "H"));
                         } catch (Exception e) {
-            vcaballero
+                                ///System.out.println("En las ExtentHistory =" + e); //TODO o se captura de alguna forma o se mete un nuevo parametro en el xml para saber exactamente cuantos rect?gulos se han a?adido.
             vcaballero
+                }
                 return eh;
+        }
             fernando