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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
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* General Public License Version 2 only ("GPL") or the Common
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* Development and Distribution License("CDDL") (collectively, the
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* "License"). You may not use this file except in compliance with the
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* License. You can obtain a copy of the License at
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* http://www.netbeans.org/cddl-gplv2.html
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* nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* The Original Software is NetBeans. The Initial Developer of the Original
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* Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
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package org.netbeans.modules.java.j2seproject.queries;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import java.nio.charset.Charset;
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import java.nio.charset.IllegalCharsetNameException;
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import java.nio.charset.UnsupportedCharsetException;
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import org.netbeans.modules.java.j2seproject.ui.customizer.J2SEProjectProperties;
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import org.netbeans.spi.queries.FileEncodingQueryImplementation;
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import org.netbeans.spi.project.support.ant.PropertyEvaluator;
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import org.openide.filesystems.FileObject;
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* @author Tomas Zezula
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public class J2SEProjectEncodingQueryImpl extends FileEncodingQueryImplementation implements PropertyChangeListener {
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private final PropertyEvaluator eval;
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private Charset cache;
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/** Creates a new instance of J2SEProjectEncodingQueryImpl */
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public J2SEProjectEncodingQueryImpl(final PropertyEvaluator eval) {
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this.eval.addPropertyChangeListener(this);
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public Charset getEncoding(FileObject file) {
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String enc = eval.getProperty(J2SEProjectProperties.SOURCE_ENCODING);
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//From discussion with K. Frank the project returns Charset.defaultCharset ()
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//for old j2se projects. The old project used system encoding => Charset.defaultCharset ()
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//should work for most users.
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cache = enc == null ? Charset.defaultCharset() : Charset.forName(enc);
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} catch (IllegalCharsetNameException exception) {
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catch (UnsupportedCharsetException exception) {
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public void propertyChange(PropertyChangeEvent event) {
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String propName = event.getPropertyName();
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if (propName == null || propName.equals(J2SEProjectProperties.SOURCE_ENCODING)) {
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synchronized (this) {