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.Map;
  
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.core.runtime.IProgressMonitor;
  import org.eclipse.ltk.core.refactoring.RefactoringStatus;
  import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
  import org.eclipse.wst.jsdt.core.IJavaScriptProject;
  import org.eclipse.wst.jsdt.core.dom.JavaScriptUnit;
  import org.eclipse.wst.jsdt.internal.corext.codemanipulation.CodeGenerationSettings;
  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.ImportsFix;
  import org.eclipse.wst.jsdt.internal.ui.preferences.JavaPreferencesSettings;
  import org.eclipse.wst.jsdt.ui.text.java.IProblemLocation;
  
  public class ImportsCleanUp extends AbstractCleanUp {
  	
  	private CodeGenerationSettings fCodeGeneratorSettings;
  	private RefactoringStatus fStatus;
  
  	public ImportsCleanUp(Map options) {
  		super(options);
      }
  	
  	public ImportsCleanUp() {
  		super();
      }
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public boolean requireAST(IJavaScriptUnit unit) throws CoreException {
  	    return isEnabled(CleanUpConstants.ORGANIZE_IMPORTS);
  	}
  
  	/**
       * {@inheritDoc}
       */
      public IFix createFix(final JavaScriptUnit compilationUnit) throws CoreException {
  		return ImportsFix.createCleanUp(compilationUnit, fCodeGeneratorSettings,
  				isEnabled(CleanUpConstants.ORGANIZE_IMPORTS), fStatus);
  	}
  
  	/**
       * {@inheritDoc}
       */
      public IFix createFix(JavaScriptUnit compilationUnit, IProblemLocation[] problems) throws CoreException {
  	    return null;
      }
  
      /**
       * {@inheritDoc}
       */
      public RefactoringStatus checkPreConditions(IJavaScriptProject project, IJavaScriptUnit[] compilationUnits, IProgressMonitor monitor) throws CoreException {
  		RefactoringStatus result= super.checkPreConditions(project, compilationUnits, monitor);
      	
  		if (isEnabled(CleanUpConstants.ORGANIZE_IMPORTS)) {
      		fCodeGeneratorSettings= JavaPreferencesSettings.getCodeGenerationSettings(project);
      		fStatus= new RefactoringStatus();
  		}
  		
      	return result;
      }
      
      /**
       * {@inheritDoc}
       */
      public RefactoringStatus checkPostConditions(IProgressMonitor monitor) throws CoreException {
      	fCodeGeneratorSettings= null;
      	if (fStatus == null || fStatus.isOK()) {
      		return super.checkPostConditions(monitor);
      	} else {
      		return fStatus;
      	}
      }
  
  	/**
       * {@inheritDoc}
       */
      public String[] getDescriptions() {
      	if (isEnabled(CleanUpConstants.ORGANIZE_IMPORTS))
      		return new String[] {MultiFixMessages.ImportsCleanUp_OrganizeImports_Description};
      		
  	    return null;
      }
  
  	/**
       * {@inheritDoc}
       */
      public String getPreview() {
  		StringBuffer buf= new StringBuffer();
  		
  //		if (isEnabled(CleanUpConstants.ORGANIZE_IMPORTS)) {
  //			buf.append("import org.model.Engine;\n"); //$NON-NLS-1$
  //		} else {
  //			buf.append("import org.model.*;\n"); //$NON-NLS-1$
  //		}
  		
  		return buf.toString();
      }
  
  	/**
       * {@inheritDoc}
       */
      public Map getRequiredOptions() {
  	    return null;
      }
  
  	/**
       * {@inheritDoc}
       */
      public int maximalNumberOfFixes(JavaScriptUnit compilationUnit) {
  	    return -1;
      }
  
  	/**
       * {@inheritDoc}
       */
      public boolean needsFreshAST(JavaScriptUnit compilationUnit) {
      	if (isEnabled(CleanUpConstants.ORGANIZE_IMPORTS))
  	    	return true;
      	
      	return super.needsFreshAST(compilationUnit);
      }
      
  	/**
       * {@inheritDoc}
       */
      public boolean canFix(JavaScriptUnit compilationUnit, IProblemLocation problem) throws CoreException {
  	    return false;
      }
  
  }
  