content: /*******************************************************************************
   * Copyright (c) 2000, 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.wst.jsdt.internal.ui.actions;
  
  import java.util.LinkedList;
  import java.util.List;
  import java.util.ResourceBundle;
  
  import org.eclipse.jface.text.BadLocationException;
  import org.eclipse.jface.text.BadPartitioningException;
  import org.eclipse.jface.text.IDocumentExtension3;
  import org.eclipse.jface.text.ITextSelection;
  import org.eclipse.jface.text.ITypedRegion;
  import org.eclipse.ui.texteditor.ITextEditor;
  import org.eclipse.wst.jsdt.ui.text.IJavaScriptPartitions;
  
  
  /**
   * Action that removes the enclosing comment marks from a Java block comment.
   * 
   * 
   */
  public class RemoveBlockCommentAction extends BlockCommentAction {
  
  	/**
  	 * Creates a new instance.
  	 * 
  	 * @param bundle the resource bundle
  	 * @param prefix a prefix to be prepended to the various resource keys
  	 *   (described in <code>ResourceAction</code> constructor), or 
  	 *   <code>null</code> if none
  	 * @param editor the text editor
  	 */
  	public RemoveBlockCommentAction(ResourceBundle bundle, String prefix, ITextEditor editor) {
  		super(bundle, prefix, editor);
  	}
  	
  	/*
  	 * @see org.eclipse.wst.jsdt.internal.ui.actions.AddBlockCommentAction#runInternal(org.eclipse.jface.text.ITextSelection, org.eclipse.jface.text.IDocumentExtension3, org.eclipse.wst.jsdt.internal.ui.actions.AddBlockCommentAction.Edit.EditFactory)
  	 */
  	protected void runInternal(ITextSelection selection, IDocumentExtension3 docExtension, Edit.EditFactory factory) throws BadPartitioningException, BadLocationException {
  		List edits= new LinkedList();
  		int tokenLength= getCommentStart().length();
  		
  		int offset= selection.getOffset();
  		int endOffset= offset + selection.getLength();
  
  		ITypedRegion partition= docExtension.getPartition(IJavaScriptPartitions.JAVA_PARTITIONING, offset, false);
  		int partOffset= partition.getOffset();
  		int partEndOffset= partOffset + partition.getLength();
  		
  		while (partEndOffset < endOffset) {
  			
  			if (partition.getType() == IJavaScriptPartitions.JAVA_MULTI_LINE_COMMENT) {
  				edits.add(factory.createEdit(partOffset, tokenLength, "")); //$NON-NLS-1$
  				edits.add(factory.createEdit(partEndOffset - tokenLength, tokenLength, "")); //$NON-NLS-1$
  			}
  			
  			partition= docExtension.getPartition(IJavaScriptPartitions.JAVA_PARTITIONING, partEndOffset, false);
  			partOffset= partition.getOffset();
  			partEndOffset= partOffset + partition.getLength();
  		}
  
  		if (partition.getType() == IJavaScriptPartitions.JAVA_MULTI_LINE_COMMENT) {
  			edits.add(factory.createEdit(partOffset, tokenLength, "")); //$NON-NLS-1$
  			edits.add(factory.createEdit(partEndOffset - tokenLength, tokenLength, "")); //$NON-NLS-1$
  		}
  
  		executeEdits(edits);
  	}
  
  	/*
  	 * @see org.eclipse.wst.jsdt.internal.ui.actions.AddBlockCommentAction#validSelection(org.eclipse.jface.text.ITextSelection)
  	 */
  	protected boolean isValidSelection(ITextSelection selection) {
  		return selection != null && !selection.isEmpty();
  	}
  
  }
  