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package org.netbeans.modules.scala.platform;
import org.netbeans.api.scala.platform.ScalaPlatform;
import org.openide.filesystems.*;
import org.openide.cookies.InstanceCookie;
import org.openide.ErrorManager;
import org.openide.loaders.DataObject;
import java.util.*;
import java.io.IOException;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeSupport;
import org.netbeans.api.scala.platform.ScalaPlatformManager;
import org.openide.util.Lookup;
@org.openide.util.lookup.ServiceProvider(service=org.netbeans.modules.scala.platform.ScalaPlatformProvider.class)
public class DefaultScalaPlatformProvider implements ScalaPlatformProvider, FileChangeListener {
private static final String PLATFORM_STORAGE = "Services/Platforms/org-netbeans-api-scala-Platform"; //NOI18N
private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);
private FileObject storage;
private ScalaPlatform defaultPlatform;
public DefaultScalaPlatformProvider () {
storage = FileUtil.getConfigFile(PLATFORM_STORAGE);
if (storage == null) {
// Turn this off since it can confuse unit tests running w/o layer merging.
//assert false : "Cannot find platforms storage";
}
else {
storage.addFileChangeListener (this);
}
}
public ScalaPlatform[] getInstalledPlatforms() {
List<ScalaPlatform> platforms = new ArrayList<ScalaPlatform>();
if (storage != null) {
try {
for (FileObject platformDefinition : storage.getChildren()) {
DataObject dobj = DataObject.find(platformDefinition);
InstanceCookie ic = dobj.getCookie(InstanceCookie.class);
if (ic == null) {
ErrorManager.getDefault().log(ErrorManager.WARNING,"DefaultPlatformStorage: The file: "+ //NOI18N
platformDefinition.getNameExt() + " has no InstanceCookie"); //NOI18N
continue;
}
else if (ic instanceof InstanceCookie.Of) {
if (((InstanceCookie.Of)ic).instanceOf(ScalaPlatform.class)) {
platforms.add((ScalaPlatform) ic.instanceCreate());
}
else {
ErrorManager.getDefault().log(ErrorManager.WARNING,"DefaultPlatformStorage: The file: "+ //NOI18N
platformDefinition.getNameExt() + " is not an instance of JavaPlatform"); //NOI18N
}
}
else {
Object instance = ic.instanceCreate();
if (instance instanceof ScalaPlatform) {
platforms.add((ScalaPlatform) instance);
}
else {
ErrorManager.getDefault().log(ErrorManager.WARNING,"DefaultPlatformStorage: The file: "+ //NOI18N
platformDefinition.getNameExt() + " is not an instance of JavaPlatform"); //NOI18N
}
}
}
}catch (ClassNotFoundException cnf) {
ErrorManager.getDefault().notify (cnf);
}
catch (IOException ioe) {
ErrorManager.getDefault().notify (ioe);
}
}
return platforms.toArray(new ScalaPlatform[platforms.size()]);
}
public ScalaPlatform getDefaultPlatform() {
if (this.defaultPlatform == null) {
ScalaPlatform[] allPlatforms = this.getInstalledPlatforms();
for (int i=0; i< allPlatforms.length; i++) {
if ("default_platform".equals(allPlatforms[i].getProperties().get(ScalaPlatformManager.SCALA_PLATFORM_PROP_ID))) { //NOI18N
defaultPlatform = allPlatforms[i];
break;
}
}
}
return this.defaultPlatform;
}
public void addPropertyChangeListener(PropertyChangeListener listener) {
pcs.addPropertyChangeListener(listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
pcs.removePropertyChangeListener(listener);
}
public void fileFolderCreated(FileEvent fe) {
}
public void fileDataCreated(FileEvent fe) {
firePropertyChange ();
}
public void fileChanged(FileEvent fe) {
firePropertyChange ();
}
public void fileDeleted(FileEvent fe) {
firePropertyChange ();
}
public void fileRenamed(FileRenameEvent fe) {
firePropertyChange ();
}
public void fileAttributeChanged(FileAttributeEvent fe) {
}
private void firePropertyChange () {
pcs.firePropertyChange(PROP_INSTALLED_PLATFORMS, null, null);
}
}