Revision 26604 tmp/trunk/cliente/WorkSpace_WPSClient/extWPSCallejero/src/es/logex/gvsig/streetsmap/ui/SwingWorker.java
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/* gvSIG. Sistema de Información Geográfica de la Generalitat Valenciana |
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* |
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* Copyright (C) 2008 Logica Extrema, S.L. and Generalitat Valenciana. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA. |
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* |
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* For more information, contact: |
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* |
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* Generalitat Valenciana |
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* Conselleria d'Infraestructures i Transport |
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* Av. Blasco Ibáñez, 50 |
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* 46010 VALENCIA |
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* SPAIN |
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* |
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* +34 963862235 |
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* gvsig@gva.es |
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* www.gvsig.gva.es |
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* |
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* or |
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* |
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* Logica Extrema, S.L. |
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* Edif. Sorolla Center |
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* Avgda. De les Corts Valencianes, 158 Of.1007 |
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* 46015 Valencia |
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* Spain |
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* |
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* +34 963462375 |
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* info@logex.es |
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*/ |
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package es.logex.gvsig.streetsmap.ui; |
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import javax.swing.SwingUtilities; |
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* instructions on using this class, see: |
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* |
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* http://java.sun.com/docs/books/tutorial/uiswing/misc/threads.html |
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* |
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*
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* Note that the API changed slightly in the 3rd version: |
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* You must now invoke start() on the SwingWorker after |
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* creating it. |
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*/ |
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public abstract class SwingWorker { |
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/** The value. */ |
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private Object value; // see getValue(), setValue() |
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/** |
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/** |
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* Class to maintain reference to current worker thread |
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* under separate synchronization control. |
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*/ |
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private static class ThreadVar { |
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/** The thread. */ |
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private Thread thread; |
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/** |
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* Instantiates a new thread var. |
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* |
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* @param t the t |
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*/ |
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ThreadVar(Thread t) { thread = t; } |
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/** |
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* Gets the. |
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* |
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* @return the thread |
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*/ |
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synchronized Thread get() { return thread; } |
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/** |
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* Clear. |
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*/ |
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synchronized void clear() { thread = null; } |
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} |
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/** The thread var. */ |
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private ThreadVar threadVar; |
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/**
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* Get the value produced by the worker thread, or null if it
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/** |
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* Get the value produced by the worker thread, or null if it |
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* hasn't been constructed yet. |
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* @return the value |
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*/ |
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protected synchronized Object getValue() { |
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return value; |
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} |
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/** |
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* Set the value produced by worker thread |
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/** |
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* Set the value produced by worker thread. |
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* |
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* @param x the x |
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*/ |
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private synchronized void setValue(Object x) { |
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value = x; |
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} |
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/** |
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* Compute the value to be returned by the <code>get</code> method. |
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/** |
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* Compute the value to be returned by the <code>get</code> method. |
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* |
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* @return the object |
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*/ |
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public abstract Object construct(); |
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} |
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/** |
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* Return the value created by the <code>construct</code> method.
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* Return the value created by the <code>construct</code> method. |
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* Returns null if either the constructing thread or the current |
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* thread was interrupted before a value was produced. |
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* |
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