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package org.netbeans.modules.ruby.railsprojects;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.netbeans.modules.ruby.railsprojects.ui.customizer.RailsProjectProperties;
import org.openide.util.Mutex;
import org.netbeans.api.project.Sources;
import org.netbeans.api.project.SourceGroup;
import org.netbeans.api.project.ProjectManager;
import org.netbeans.api.project.FileOwnerQuery;
import org.netbeans.api.project.Project;
import org.netbeans.modules.ruby.spi.project.support.rake.SourcesHelper;
import org.netbeans.modules.ruby.spi.project.support.rake.RakeProjectHelper;
import org.netbeans.modules.ruby.spi.project.support.rake.PropertyEvaluator;
/**
* Implementation of {@link Sources} interface for RailsProject.
*/
public class RailsSources implements Sources, PropertyChangeListener, ChangeListener {
private static final String BUILD_DIR_PROP = "${" + RailsProjectProperties.BUILD_DIR + "}"; //NOI18N
private static final String DIST_DIR_PROP = "${" + RailsProjectProperties.DIST_DIR + "}"; //NOI18N
private final Project project;
private final RakeProjectHelper helper;
private final PropertyEvaluator evaluator;
private final SourceRoots sourceRoots;
private final SourceRoots testRoots;
private Sources delegate;
private final List<ChangeListener> listeners = new ArrayList<ChangeListener>();
public RailsSources(Project project, RakeProjectHelper helper, PropertyEvaluator evaluator,
SourceRoots sourceRoots, SourceRoots testRoots) {
this.project = project;
this.helper = helper;
this.evaluator = evaluator;
this.sourceRoots = sourceRoots;
this.testRoots = testRoots;
this.sourceRoots.addPropertyChangeListener(this);
this.testRoots.addPropertyChangeListener(this);
this.evaluator.addPropertyChangeListener(this);
initSources(); // have to register external build roots eagerly - XXX Why?
}
/**
* Returns an array of SourceGroup of given type. It delegates to {@link SourcesHelper}.
* This method firstly acquire the {@link ProjectManager#mutex} in read mode then it enters
* into the synchronized block to ensure that just one instance of the {@link SourcesHelper}
* is created. These instance is cleared also in the synchronized block by the
* {@link RailsSources#fireChange} method.
*/
public SourceGroup[] getSourceGroups(final String type) {
return ProjectManager.mutex().readAccess(new Mutex.Action<SourceGroup[]>() {
public SourceGroup[] run() {
Sources _delegate;
synchronized (RailsSources.this) {
if (delegate == null) {
delegate = initSources();
delegate.addChangeListener(RailsSources.this);
}
_delegate = delegate;
}
return _delegate.getSourceGroups(type);
}
});
}
void notifyDeleting() {
delegate.removeChangeListener(this);
sourceRoots.removePropertyChangeListener(this);
testRoots.removePropertyChangeListener(this);
evaluator.removePropertyChangeListener(this);
}
private Sources initSources() {
SourcesHelper sourcesHelper = new SourcesHelper(project, helper, evaluator); //Safe to pass APH
String[] propNames = sourceRoots.getRootProperties();
String[] rootNames = sourceRoots.getRootNames();
for (int i = 0; i < propNames.length; i++) {
String displayName = rootNames[i];
displayName = sourceRoots.getRootDisplayName(displayName, propNames[i]);
String prop = /*"${" +*/ propNames[i]/* + "}"*/; // NOI18N
sourcesHelper.addPrincipalSourceRoot(prop, displayName, /*XXX*/null, null);
sourcesHelper.addTypedSourceRoot(prop, RailsProject.SOURCES_TYPE_RUBY, displayName, /*XXX*/null, null);
}
propNames = testRoots.getRootProperties();
rootNames = testRoots.getRootNames();
for (int i = 0; i < propNames.length; i++) {
String displayName = rootNames[i];
displayName = testRoots.getRootDisplayName(displayName, propNames[i]);
String prop = "${" + propNames[i] + "}"; // NOI18N
sourcesHelper.addPrincipalSourceRoot(prop, displayName, /*XXX*/null, null);
sourcesHelper.addTypedSourceRoot(prop, RailsProject.SOURCES_TYPE_RUBY, displayName, /*XXX*/null, null);
}
sourcesHelper.addNonSourceRoot (BUILD_DIR_PROP);
sourcesHelper.addNonSourceRoot(DIST_DIR_PROP);
sourcesHelper.registerExternalRoots(FileOwnerQuery.EXTERNAL_ALGORITHM_TRANSIENT);
return sourcesHelper.createSources();
}
public void addChangeListener(ChangeListener changeListener) {
synchronized (listeners) {
listeners.add(changeListener);
}
}
public void removeChangeListener(ChangeListener changeListener) {
synchronized (listeners) {
listeners.remove(changeListener);
}
}
private void fireChange() {
ChangeListener[] _listeners;
synchronized (this) {
if (delegate != null) {
delegate.removeChangeListener(this);
delegate = null;
}
}
synchronized (listeners) {
if (listeners.isEmpty()) {
return;
}
_listeners = listeners.toArray(new ChangeListener[listeners.size()]);
}
ChangeEvent ev = new ChangeEvent(this);
for (ChangeListener l : _listeners) {
l.stateChanged(ev);
}
}
public void propertyChange(PropertyChangeEvent evt) {
String propName = evt.getPropertyName();
if (SourceRoots.PROP_ROOT_PROPERTIES.equals(propName) ||
RailsProjectProperties.BUILD_DIR.equals(propName) ||
RailsProjectProperties.DIST_DIR.equals(propName)) {
this.fireChange();
}
}
public void stateChanged (ChangeEvent event) {
this.fireChange();
}
}