content: /*******************************************************************************
   * Copyright (c) 2000, 2009 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.fix;
  
  import java.util.ArrayList;
  import java.util.Hashtable;
  import java.util.List;
  import java.util.Map;
  
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
  import org.eclipse.wst.jsdt.core.JavaScriptCore;
  import org.eclipse.wst.jsdt.core.dom.JavaScriptUnit;
  import org.eclipse.wst.jsdt.internal.corext.fix.CleanUpConstants;
  import org.eclipse.wst.jsdt.internal.corext.fix.IFix;
  import org.eclipse.wst.jsdt.internal.corext.fix.UnusedCodeFix;
  import org.eclipse.wst.jsdt.ui.text.java.IProblemLocation;
  
  public class UnnecessaryCodeCleanUp extends AbstractCleanUp {
  		
  	public UnnecessaryCodeCleanUp(Map options) {
  		super(options);
  	}
  	
  	public UnnecessaryCodeCleanUp() {
  		super();
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public boolean requireAST(IJavaScriptUnit unit) throws CoreException {
  	    return isEnabled(CleanUpConstants.REMOVE_UNNECESSARY_CASTS);
  	}
  	
  	public IFix createFix(JavaScriptUnit compilationUnit) throws CoreException {
  		if (compilationUnit == null)
  			return null;
  		
  		return UnusedCodeFix.createCleanUp(compilationUnit, 
  				false, 
  				false, 
  				false, 
  				false, 
  				false, 
  				false,
  				isEnabled(CleanUpConstants.REMOVE_UNNECESSARY_CASTS));
  	}
  	
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public IFix createFix(JavaScriptUnit compilationUnit, IProblemLocation[] problems) throws CoreException {
  		if (compilationUnit == null)
  			return null;
  		
  		return UnusedCodeFix.createCleanUp(compilationUnit, problems,
  				false, 
  				false, 
  				false, 
  				false, 
  				false, 
  				false,
  				isEnabled(CleanUpConstants.REMOVE_UNNECESSARY_CASTS));
  	}
  
  	public Map getRequiredOptions() {
  		Map options= new Hashtable();
  
  		if (isEnabled(CleanUpConstants.REMOVE_UNNECESSARY_CASTS))
  			options.put(JavaScriptCore.COMPILER_PB_UNNECESSARY_TYPE_CHECK, JavaScriptCore.WARNING);
  
  		return options;
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public String[] getDescriptions() {
  		List result= new ArrayList();
  		if (isEnabled(CleanUpConstants.REMOVE_UNNECESSARY_CASTS))
  			result.add(MultiFixMessages.UnusedCodeCleanUp_RemoveUnusedCasts_description);
  		return (String[])result.toArray(new String[result.size()]);
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public String getPreview() {
  		StringBuffer buf= new StringBuffer();
  		
  //		if (isEnabled(CleanUpConstants.REMOVE_UNNECESSARY_CASTS)) {
  //			buf.append("Boolean b= Boolean.TRUE;\n"); //$NON-NLS-1$
  //		} else {
  //			buf.append("Boolean b= (Boolean) Boolean.TRUE;\n"); //$NON-NLS-1$
  //		}
  //		
  		return buf.toString();
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public boolean canFix(JavaScriptUnit compilationUnit, IProblemLocation problem) throws CoreException {
  		return false;
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public int maximalNumberOfFixes(JavaScriptUnit compilationUnit) {
  		int result= 0;
  		return result;
  	}
  }
  