package bndtools.refactor;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.ltk.core.refactoring.Change;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
public abstract class ProjectNatureChange extends Change {
protected final IProject project;
public ProjectNatureChange(IProject project) {
this.project = project;
}
@Override
public void initializeValidationData(IProgressMonitor pm) {
// TODO
}
@Override
public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException, OperationCanceledException {
RefactoringStatus status = new RefactoringStatus();
// TODO
return status;
}
@Override
public final Change perform(IProgressMonitor pm) throws CoreException {
final IProjectDescription desc = project.getDescription();
Set<String> natures = new HashSet<String>(Arrays.asList(desc.getNatureIds()));
boolean changed = modifyNatures(natures);
if (changed) {
desc.setNatureIds(natures.toArray(new String[natures.size()]));
project.setDescription(desc, pm);
}
return createInverse();
}
protected abstract boolean modifyNatures(Set<String> natures);
protected abstract Change createInverse();
@Override
public Object getModifiedElement() {
return project;
}
}