svn-gvsig-desktop / trunk / extensions / extGeoreferencing / src / org / gvsig / georeferencing / ui / zoom / ViewRecord.java @ 18530
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1 | 18530 | nbrodin | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | */
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19 | package org.gvsig.georeferencing.ui.zoom; |
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20 | |||
21 | import java.util.ArrayList; |
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22 | |||
23 | /**
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24 | * Historial de peticiones para poder recuperar las anteriores a
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25 | * la actual.
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26 | *
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27 | * 11/01/2008
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28 | * @author Nacho Brodin (nachobrodin@gmail.com)
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29 | */
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30 | public class ViewRecord { |
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31 | |||
32 | private ArrayList record = new ArrayList(); |
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33 | private int pos = -1; |
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34 | |||
35 | /**
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36 | * Asigna la petici?n siguiente
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37 | * @param request
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38 | */
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39 | public void setRequest(Object request) { |
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40 | record.add(++ pos, request); |
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41 | } |
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42 | |||
43 | /**
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44 | * Obtiene la petici?n anterior
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45 | * @return
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46 | */
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47 | public Object getRequest() { |
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48 | if(pos > 0) { |
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49 | pos --; |
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50 | return record.get(pos);
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51 | } else if(pos == 0) |
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52 | return record.get(pos);
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53 | return null; |
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54 | } |
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55 | |||
56 | /**
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57 | * Vacia el historial
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58 | */
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59 | public void clear() { |
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60 | record.clear(); |
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61 | } |
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62 | } |