gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / observer / ObservableHelper.java @ 2651
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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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 3
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.tools.observer; |
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import java.util.ArrayList; |
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import java.util.List; |
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import org.gvsig.tools.lang.CloneableUtils; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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public class ObservableHelper implements org.gvsig.tools.lang.Cloneable { |
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private static final Logger logger = LoggerFactory.getLogger(ObservableHelper.class); |
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private List<Observer> observers = new ArrayList(); |
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@Override
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public ObservableHelper clone() throws CloneNotSupportedException { |
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ObservableHelper other = (ObservableHelper) super.clone();
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other.observers = (List<Observer>) CloneableUtils.cloneQuietly(this.observers); |
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return other;
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} |
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public synchronized void addObserver(Observer o) { |
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if ( this.observers.contains(o) ) { |
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return;
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} |
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this.observers.add(o);
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} |
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public synchronized void deleteObserver(Observer o) { |
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this.observers.remove(o);
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} |
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public synchronized void deleteObservers() { |
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this.observers = new ArrayList(); |
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} |
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public synchronized void notifyObservers(Observable observable, Object data) { |
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for ( int i = 0; i < this.observers.size(); i++ ) { |
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Observer o = (Observer) this.observers.get(i); |
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try {
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o.update(observable, data); |
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} catch (Exception ex) { |
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logger.warn("Error notifying to the observers.", ex);
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} |
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} |
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} |
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public Notification notifyObservers(Observable observable, String type, Object value) { |
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Notification notification = new BaseNotification(type, new Object[]{value}); |
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this.notifyObservers(observable, notification);
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return notification;
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} |
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public Notification notifyObservers(Observable observable, String type, Object value1, Object value2) { |
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Notification notification = new BaseNotification(type, new Object[]{value1, value2}); |
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this.notifyObservers(observable, notification);
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return notification;
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} |
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public Notification notifyObservers(Observable observable, String type, Object value1, Object value2, Object value3) { |
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Notification notification = new BaseNotification(type, new Object[]{value1, value2, value3}); |
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this.notifyObservers(observable, notification);
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return notification;
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} |
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} |