root / trunk / applications / appgvSIG / src / com / iver / cit / gvsig / panelGroup / loaders / PanelGroupLoaderFromExtensionPoint.java @ 15734
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2007 IVER T.I. 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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package com.iver.cit.gvsig.panelGroup.loaders; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import org.gvsig.gui.beans.panelGroup.loaders.IPanelGroupLoader; |
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import org.gvsig.gui.beans.panelGroup.panels.AbstractPanel; |
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import com.iver.utiles.extensionPoints.ExtensionPoint; |
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import com.iver.utiles.extensionPoints.ExtensionPoints; |
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import com.iver.utiles.extensionPoints.ExtensionPointsSingleton; |
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/**
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* <p>Panel loader version that loads {@link AbstractPanel AbstractPanel} classes registered
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* as a extension point.</p>
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*
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* @see IPanelGroupLoader
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*
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* @version 15/10/2007
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* @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es)
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*/
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public class PanelGroupLoaderFromExtensionPoint implements IPanelGroupLoader { |
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/**
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* Extension point id
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*/
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private String id; |
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/**
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* <p>Initializes this loader.</p>
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*
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* @param id extension point identifier
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*/
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public PanelGroupLoaderFromExtensionPoint(String id) { |
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this.id = id;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.panelGroup.loaders.IPanelGroupLoader#loadPanels()
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*/
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public AbstractPanel[] loadPanels() throws Exception { |
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if (id == null) |
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return null; |
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ExtensionPoints extensionPoints = ExtensionPointsSingleton.getInstance(); |
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ExtensionPoint extensionPoint = (ExtensionPoint) extensionPoints.get(id); |
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if (extensionPoint == null) |
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return null; |
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Iterator iterator = extensionPoint.keySet().iterator();
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ArrayList<AbstractPanel> panels = new ArrayList<AbstractPanel>(); |
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Exception lastException = null; |
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String key;
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Class class_type;
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while (iterator.hasNext()) {
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try {
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key = (String) iterator.next();
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class_type = ((Class) extensionPoint.get(key));
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if ((class_type != null) && (AbstractPanel.class.isAssignableFrom(class_type))) { |
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panels.add((AbstractPanel) class_type.getConstructor().newInstance()); |
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} |
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} catch (Exception e) { |
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lastException = e; |
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} |
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} |
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return panels.toArray(new AbstractPanel[panels.size()]); |
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} |
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} |