/*******************************************************************************
* Copyright (c) 2007, 2008 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.ltk.internal.core.refactoring.resource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.core.resources.IResource;
import org.eclipse.ltk.core.refactoring.Change;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.resource.DeleteResourceChange;
import org.eclipse.ltk.core.refactoring.resource.ResourceChange;
import org.eclipse.ltk.internal.core.refactoring.BasicElementLabels;
import org.eclipse.ltk.internal.core.refactoring.Messages;
import org.eclipse.ltk.internal.core.refactoring.RefactoringCoreMessages;
import org.eclipse.ltk.internal.core.refactoring.RefactoringCorePlugin;
import org.eclipse.ltk.internal.core.refactoring.resource.undostates.ResourceUndoState;
/**
* Undo a resource delete change. This uses the {@link ResourceUndoState}
* to reverse the change.
*
* @since 3.4
*/
public class UndoDeleteResourceChange extends Change {
private final ResourceUndoState fResourceState;
public UndoDeleteResourceChange(ResourceUndoState resourceDescription) {
fResourceState= resourceDescription;
}
public void initializeValidationData(IProgressMonitor pm) {
}
public Object getModifiedElement() {
return null;
}
public String getName() {
return Messages.format(RefactoringCoreMessages.UndoDeleteResourceChange_change_name, BasicElementLabels.getResourceName(fResourceState.getName()));
}
public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException, OperationCanceledException {
if (!fResourceState.isValid()) {
return RefactoringStatus.createFatalErrorStatus(Messages.format(RefactoringCoreMessages.UndoDeleteResourceChange_cannot_restore, BasicElementLabels.getResourceName(fResourceState.getName())));
}
return new RefactoringStatus();
}
public Change perform(IProgressMonitor pm) throws CoreException {
if (fResourceState.verifyExistence(true)) {
String message= Messages.format(RefactoringCoreMessages.UndoDeleteResourceChange_already_exists, BasicElementLabels.getResourceName(fResourceState.getName()));
throw new CoreException(new Status(IStatus.ERROR, RefactoringCorePlugin.getPluginId(), message));
}
IResource created= fResourceState.createResource(pm);
created.refreshLocal(IResource.DEPTH_INFINITE, new SubProgressMonitor(pm, 1));
DeleteResourceChange change= new DeleteResourceChange(created.getFullPath(), true, false);
change.setValidationMethod(ResourceChange.VALIDATE_NOT_READ_ONLY | ResourceChange.VALIDATE_NOT_DIRTY);
return change;
}
public String toString() {
return Messages.format(RefactoringCoreMessages.UndoDeleteResourceChange_revert_resource, fResourceState.getName());
}
}