/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.update.internal.operations;
import org.eclipse.core.runtime.*;
import org.eclipse.update.configuration.*;
import org.eclipse.update.core.*;
/**
* This utility class attaches as a listened to the provided
* configured site, and for every unconfigured feature
* it tests if it is a patch and cleans up its backup configuration.
*/
public class PatchCleaner {
private IConfiguredSite csite;
private SiteListener listener;
class SiteListener implements IConfiguredSiteChangedListener {
public void featureInstalled(IFeature feature) {
}
public void featureRemoved(IFeature feature) {
cleanSavedConfigs(feature);
}
public void featureConfigured(IFeature feature) {
}
public void featureUnconfigured(IFeature feature) {
cleanSavedConfigs(feature);
}
}
public PatchCleaner(IConfiguredSite csite, IFeature root) {
this.csite = csite;
listener = new SiteListener();
csite.addConfiguredSiteChangedListener(listener);
}
public void dispose() {
csite.removeConfiguredSiteChangedListener(listener);
}
private void cleanSavedConfigs(IFeature feature) {
if (feature.isPatch()) {
IInstallConfiguration backupConfig = UpdateUtils.getBackupConfigurationFor(feature);
if (backupConfig!=null) {
// clean it
remove(backupConfig);
}
}
}
private void remove(IInstallConfiguration config) {
try {
ILocalSite localSite = SiteManager.getLocalSite();
localSite.removeFromPreservedConfigurations(config);
}
catch (CoreException e) {
}
}
}