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The source code
/*
* Sun Public License Notice
*
* The contents of this file are subject to the Sun Public License
* Version 1.0 (the "License"). You may not use this file except in
* compliance with the License. A copy of the License is available at
* http://www.sun.com/
*
* The Original Code is NetBeans. The Initial Developer of the Original
* Code is Sun Microsystems, Inc. Portions Copyright 1997-2004 Sun
* Microsystems, Inc. All Rights Reserved.
*/
package org.netbeans.modules.ant.freeform;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.netbeans.spi.project.support.ant.AntProjectEvent;
import org.netbeans.spi.project.support.ant.AntProjectListener;
import org.netbeans.spi.project.support.ant.PropertyEvaluator;
import org.netbeans.spi.project.support.ant.PropertyProvider;
import org.netbeans.spi.project.support.ant.PropertyUtils;
import org.openide.ErrorManager;
import org.w3c.dom.Element;
/**
* Manages property evaluation for the freeform project.
* Refreshes properties if (1) project.xml changes; (2) some *.properties changes.
* @author Jesse Glick
*/
final class FreeformEvaluator implements PropertyEvaluator, AntProjectListener, PropertyChangeListener {
private final FreeformProject project;
private PropertyEvaluator delegate;
private final List/**/ listeners = new ArrayList();
public FreeformEvaluator(FreeformProject project) throws IOException {
this.project = project;
init();
project.helper().addAntProjectListener(this);
}
private void init() throws IOException {
if (delegate != null) {
delegate.removePropertyChangeListener(this);
}
delegate = initEval();
delegate.addPropertyChangeListener(this);
if (Util.err.isLoggable(ErrorManager.INFORMATIONAL)) {
Util.err.log("properties for " + project.getProjectDirectory() + ": " + delegate.getProperties());
}
}
private PropertyEvaluator initEval() throws IOException {
PropertyProvider preprovider = project.helper().getStockPropertyPreprovider();
List/**/ defs = new ArrayList();
Element genldata = project.helper().getPrimaryConfigurationData(true);
Element properties = Util.findElement(genldata, "properties", FreeformProjectType.NS_GENERAL); // NOI18N
if (properties != null) {
List/**/ props = Util.findSubElements(properties);
Iterator it = props.iterator();
while (it.hasNext()) {
Element e = (Element)it.next();
if (e.getLocalName().equals("property")) { // NOI18N
defs.add(PropertyUtils.fixedPropertyProvider(Collections.singletonMap(e.getAttribute("name"), Util.findText(e)))); // NOI18N
} else {
assert e.getLocalName().equals("property-file") : e;
String fname = Util.findText(e);
if (fname.indexOf("${") != -1) {
throw new IOException("XXX not yet implemented");
}
defs.add(PropertyUtils.propertiesFilePropertyProvider(project.helper().resolveFile(fname)));
}
}
}
return PropertyUtils.sequentialPropertyEvaluator(preprovider, (PropertyProvider[]) defs.toArray(new PropertyProvider[defs.size()]));
}
public String getProperty(String prop) {
return delegate.getProperty(prop);
}
public String evaluate(String text) {
return delegate.evaluate(text);
}
public Map/**/ getProperties() {
return delegate.getProperties();
}
public void addPropertyChangeListener(PropertyChangeListener listener) {
listeners.add(listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
listeners.remove(listener);
}
private void fireChange(String prop) {
PropertyChangeListener[] _listeners;
synchronized (this) {
if (listeners.isEmpty()) {
return;
}
_listeners = (PropertyChangeListener[])listeners.toArray(new PropertyChangeListener[listeners.size()]);
}
PropertyChangeEvent ev = new PropertyChangeEvent(this, prop, null, null);
for (int i = 0; i < _listeners.length; i++) {
_listeners[i].propertyChange(ev);
}
}
public void configurationXmlChanged(AntProjectEvent ev) {
try {
init();
} catch (IOException ex) {
ErrorManager.getDefault().notify(ErrorManager.ERROR, ex);
}
fireChange(null);
}
public void propertiesChanged(AntProjectEvent ev) {
// ignore
}
public void propertyChange(PropertyChangeEvent propertyChangeEvent) {
// If a properties file changes on disk, we refire that.
fireChange(propertyChangeEvent.getPropertyName());
}
}
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