content: /*******************************************************************************
   * Copyright (c) 2000, 2007 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.wst.jsdt.internal.corext.refactoring.rename;
  
  import org.eclipse.core.resources.IFile;
  import org.eclipse.core.resources.mapping.IResourceChangeDescriptionFactory;
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.core.runtime.IProgressMonitor;
  import org.eclipse.core.runtime.OperationCanceledException;
  import org.eclipse.ltk.core.refactoring.RefactoringStatus;
  import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
  import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;
  import org.eclipse.ltk.core.refactoring.participants.RenameProcessor;
  import org.eclipse.ltk.core.refactoring.participants.ResourceChangeChecker;
  import org.eclipse.ltk.core.refactoring.participants.SharableParticipants;
  import org.eclipse.ltk.core.refactoring.participants.ValidateEditChecker;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.tagging.ICommentProvider;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.tagging.INameUpdating;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.tagging.IScriptableRefactoring;
  
  public abstract class JavaRenameProcessor extends RenameProcessor implements IScriptableRefactoring, INameUpdating, ICommentProvider {
  	
  	private String fNewElementName;
  	private String fComment;
  	private RenameModifications fRenameModifications;
  	
  	public final RefactoringParticipant[] loadParticipants(RefactoringStatus status, SharableParticipants shared) throws CoreException {
  		return getRenameModifications().loadParticipants(status, this, getAffectedProjectNatures(), shared);
  	}
  	
  	public final RefactoringStatus checkFinalConditions(IProgressMonitor pm, CheckConditionsContext context) throws CoreException, OperationCanceledException {
  		ResourceChangeChecker checker= (ResourceChangeChecker) context.getChecker(ResourceChangeChecker.class);
  		IResourceChangeDescriptionFactory deltaFactory= checker.getDeltaFactory();
  		RefactoringStatus result= doCheckFinalConditions(pm, context);
  		if (result.hasFatalError())
  			return result;
  		IFile[] changed= getChangedFiles();
  		for (int i= 0; i < changed.length; i++) {
  			deltaFactory.change(changed[i]);
  		}
  		RenameModifications renameModifications= getRenameModifications();
  		renameModifications.buildDelta(deltaFactory);
  		renameModifications.buildValidateEdits((ValidateEditChecker)context.getChecker(ValidateEditChecker.class));
  		return result;
  	}
  	
  	private RenameModifications getRenameModifications() throws CoreException {
  		if (fRenameModifications == null)
  			fRenameModifications= computeRenameModifications();
  		return fRenameModifications;
  	}
  	
  	protected abstract RenameModifications computeRenameModifications() throws CoreException;
  	
  	protected abstract RefactoringStatus doCheckFinalConditions(IProgressMonitor pm, CheckConditionsContext context) throws CoreException, OperationCanceledException;
  	
  	protected abstract IFile[] getChangedFiles() throws CoreException;
  
  	protected abstract String[] getAffectedProjectNatures() throws CoreException;
  
  	public void setNewElementName(String newName) {
  		Assert.isNotNull(newName);
  		fNewElementName= newName;
  	}
  
  	public String getNewElementName() {
  		return fNewElementName;
  	}
  	
  	/**
  	 * @return a save mode from {@link org.eclipse.wst.jsdt.internal.ui.refactoring.RefactoringSaveHelper}
  	 * 
  	 * @see org.eclipse.wst.jsdt.internal.ui.refactoring.RefactoringSaveHelper
  	 */
  	public abstract int getSaveMode();
  
  	public final boolean canEnableComment() {
  		return true;
  	}
  
  	public final String getComment() {
  		return fComment;
  	}
  
  	public final void setComment(String comment) {
  		fComment= comment;
  	}
  }
  