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.changes;
  import org.eclipse.core.resources.IFile;
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.core.runtime.IPath;
  import org.eclipse.core.runtime.IProgressMonitor;
  import org.eclipse.core.runtime.SubProgressMonitor;
  import org.eclipse.ltk.core.refactoring.Change;
  import org.eclipse.ltk.core.refactoring.RefactoringStatus;
  import org.eclipse.ui.ide.undo.ResourceDescription;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringCoreMessages;
  import org.eclipse.wst.jsdt.internal.corext.util.Messages;
  
  public class DeleteFileChange extends AbstractDeleteChange {
  
  	private final IPath fPath;
  	private final boolean fIsExecuteChange;
  	
  	public DeleteFileChange(IFile file, boolean executeChange) {
  		Assert.isNotNull(file, "file");  //$NON-NLS-1$
  		fPath= Utils.getResourcePath(file);
  		fIsExecuteChange= executeChange;
  	}
  	
  	private IFile getFile(){
  		return Utils.getFile(fPath);
  	}
  	
  	/* non java-doc
  	 * @see IChange#getName()
  	 */
  	public String getName() {
  		return Messages.format(RefactoringCoreMessages.DeleteFileChange_1, fPath.lastSegment()); 
  	}
  
  	public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException {
  		if (fIsExecuteChange) {
  			// no need for checking since we already prompt the
  			// user if the file is dirty or read only
  			return super.isValid(pm, NONE);
  		} else {
  			return super.isValid(pm, READ_ONLY | DIRTY);
  		}
  	}
  
  	/* non java-doc
  	 * @see IChange#getModifiedLanguageElement()
  	 */
  	public Object getModifiedElement() {
  		return getFile();
  	}
  
  	/* non java-doc
  	 * @see DeleteChange#doDelete(IProgressMonitor)
  	 */
  	protected Change doDelete(IProgressMonitor pm) throws CoreException {
  		IFile file= getFile();
  		Assert.isNotNull(file);
  		Assert.isTrue(file.exists());
  		pm.beginTask("", 3); //$NON-NLS-1$
  		saveFileIfNeeded(file, new SubProgressMonitor(pm, 1));
  		
  		ResourceDescription resourceDescription = ResourceDescription.fromResource(file);
  		file.delete(false, true, new SubProgressMonitor(pm, 1));
  		resourceDescription.recordStateFromHistory(file, new SubProgressMonitor(pm, 1));
  		pm.done();
  		
  		return new UndoDeleteResourceChange(resourceDescription);
  	}
  }
  
  