svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.utils / src / main / java / org / gvsig / utils / exceptionHandling / ExceptionHandlingSupport.java @ 40561
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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.utils.exceptionHandling; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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/**
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* <p>Stores a group of <code>ExceptionListener</code> that, in whatever moment
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* could be notified a <code>Throwable</code> Java error or exception.</p>
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*
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* <p><code>ExceptionHandlingSupport</code> is useful to manage a set of listeners
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* that need to be executed when a particular error or exception in a object is produced. For
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* instance, when user drags the mouse over a geometrical object in a view, it's possible that
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* some <code>ExceptionLister</code> of that object and other nearby, must be notified. Using
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* <code>ExceptionHandlingSupport</code> the developer can manage easily a set of that kind of
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* listeners, that can change according to an external factor. (In the previous sample, for intance,
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* can change according the closed objects to the one which this <code>ExceptionHandlingSupport</code>
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* refers).</p>
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*/
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public class ExceptionHandlingSupport { |
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/**
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* <p>List with a group of <code>ExceptionListener</code>.</p>
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*/
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private ArrayList exceptionListeners = new ArrayList(); |
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/**
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* <p>Adds a new <code>ExceptionListener</code> for adding support to it.</p>
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*
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* @param o listener adapted to be notified by the <code>ExceptionHandlingSupport</code>
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*/
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public void addExceptionListener(ExceptionListener o) { |
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exceptionListeners.add(o); |
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} |
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/**
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* <p>Removes an <code>ExceptionListener</code> for finishing the support to it.</p>
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*
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* @param o listener adapted to be notified by the <code>ExceptionHandlingSupport</code>
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*
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* @return <code>true</code> if the list contained the specified element, <code>false</code> otherwise
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*/
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public boolean removeExceptionListener(ExceptionListener o) { |
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return exceptionListeners.remove(o);
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} |
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/**
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* <p>Notifies all registered listeners that an error or exception
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* throwable by the Java Virtual Machine has been produced.</p>
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*
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* @param t an error or exception in the Java language
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*/
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public void throwException(Throwable t) { |
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for (Iterator iter = exceptionListeners.iterator(); iter.hasNext();) { |
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ExceptionListener listener = (ExceptionListener) iter.next(); |
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listener.exceptionThrown(t); |
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} |
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} |
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} |