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.fix;
  
  import java.util.ArrayList;
  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.dom.JavaScriptUnit;
  import org.eclipse.wst.jsdt.internal.corext.fix.CleanUpConstants;
  import org.eclipse.wst.jsdt.internal.corext.fix.ConvertLoopFix;
  import org.eclipse.wst.jsdt.internal.corext.fix.IFix;
  import org.eclipse.wst.jsdt.ui.text.java.IProblemLocation;
  
  public class ConvertLoopCleanUp extends AbstractCleanUp {
  	
  	public ConvertLoopCleanUp(Map options) {
  		super(options);
  	}
  	
  	public ConvertLoopCleanUp() {
  		super();
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public boolean requireAST(IJavaScriptUnit unit) throws CoreException {
  		return isEnabled(CleanUpConstants.CONTROL_STATMENTS_CONVERT_FOR_LOOP_TO_ENHANCED);
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public IFix createFix(JavaScriptUnit compilationUnit) throws CoreException {
  		if (compilationUnit == null)
  			return null;
  		
  		boolean convertForLoops= isEnabled(CleanUpConstants.CONTROL_STATMENTS_CONVERT_FOR_LOOP_TO_ENHANCED);
  		
  		return ConvertLoopFix.createCleanUp(compilationUnit,
  				convertForLoops, convertForLoops,
  				isEnabled(CleanUpConstants.VARIABLE_DECLARATIONS_USE_FINAL) && isEnabled(CleanUpConstants.VARIABLE_DECLARATIONS_USE_FINAL_LOCAL_VARIABLES));
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public IFix createFix(JavaScriptUnit compilationUnit, IProblemLocation[] problems) throws CoreException {
  		//No warnings generated by the compiler
  		return null;
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public Map getRequiredOptions() {
  		return null;
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public String[] getDescriptions() {
  		List result= new ArrayList();
  		
  		if (isEnabled(CleanUpConstants.CONTROL_STATMENTS_CONVERT_FOR_LOOP_TO_ENHANCED))
  			result.add(MultiFixMessages.Java50CleanUp_ConvertToEnhancedForLoop_description);
  		
  		return (String[])result.toArray(new String[result.size()]);
  	}
  	
  	public String getPreview() {
  		StringBuffer buf= new StringBuffer();
  		
  		if (isEnabled(CleanUpConstants.CONTROL_STATMENTS_CONVERT_FOR_LOOP_TO_ENHANCED)) {
  			buf.append("for (var element in ids) {\n"); //$NON-NLS-1$
  			buf.append("    var value= element / 2; \n"); //$NON-NLS-1$
  			buf.append("    alert(value);\n"); //$NON-NLS-1$
  			buf.append("}\n"); //$NON-NLS-1$
  		} else {
  			buf.append("for (var i = 0; i < ids.length; i++) {\n"); //$NON-NLS-1$
  			buf.append("    var value= ids[i] / 2; \n"); //$NON-NLS-1$
  			buf.append("    alert(value);\n"); //$NON-NLS-1$
  			buf.append("}\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) {
  		return -1;
  	}
  }
  