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.corext.refactoring.changes;
  
  import org.eclipse.core.resources.IProject;
  import org.eclipse.core.resources.IProjectDescription;
  import org.eclipse.core.resources.IResource;
  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.wst.jsdt.core.IIncludePathEntry;
  import org.eclipse.wst.jsdt.core.IJavaScriptProject;
  import org.eclipse.wst.jsdt.core.JavaScriptCore;
  import org.eclipse.wst.jsdt.core.JavaScriptModelException;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.AbstractJavaElementRenameChange;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringCoreMessages;
  import org.eclipse.wst.jsdt.internal.corext.util.Messages;
  
  public final class RenameJavaProjectChange extends AbstractJavaElementRenameChange {
  
  	private boolean fUpdateReferences;
  
  	public RenameJavaProjectChange(IJavaScriptProject project, String newName, boolean updateReferences) {
  		this(project.getPath(), project.getElementName(), newName, IResource.NULL_STAMP, updateReferences);
  		Assert.isTrue(!project.isReadOnly(), "should not be read only"); //$NON-NLS-1$
  	}
  
  	private RenameJavaProjectChange(IPath resourcePath, String oldName, String newName, long stampToRestore, boolean updateReferences) {
  		super(resourcePath, oldName, newName);
  		fUpdateReferences= updateReferences;
  	}
  
  	private IIncludePathEntry createModifiedEntry(IIncludePathEntry oldEntry) {
  		return JavaScriptCore.newProjectEntry(createNewPath(), oldEntry.getAccessRules(), oldEntry.combineAccessRules(), oldEntry.getExtraAttributes(), oldEntry.isExported());
  	}
  
  	protected IPath createNewPath() {
  		return getResourcePath().removeLastSegments(1).append(getNewName());
  	}
  
  	protected Change createUndoChange(long stampToRestore) throws JavaScriptModelException {
  		return new RenameJavaProjectChange(createNewPath(), getNewName(), getOldName(), stampToRestore, fUpdateReferences);
  	}
  
  	protected void doRename(IProgressMonitor pm) throws CoreException {
  		try {
  			pm.beginTask(getName(), 2);
  			if (fUpdateReferences)
  				modifyClassPaths(new SubProgressMonitor(pm, 1));
  			IProject project= getProject();
  			if (project != null) {
  				IProjectDescription description= project.getDescription();
  				description.setName(getNewName());
  				project.move(description, IResource.FORCE | IResource.SHALLOW, new SubProgressMonitor(pm, 1));
  			}
  		} finally {
  			pm.done();
  		}
  	}
  
  	private IJavaScriptProject getJavaProject() {
  		return (IJavaScriptProject) getModifiedElement();
  	}
  
  	public String getName() {
  		return Messages.format(RefactoringCoreMessages.RenameJavaProjectChange_rename, new String[] { getOldName(), getNewName()});
  	}
  
  	private IProject getProject() {
  		IJavaScriptProject jp= getJavaProject();
  		if (jp == null)
  			return null;
  		return jp.getProject();
  	}
  
  	private boolean isOurEntry(IIncludePathEntry cpe) {
  		if (cpe.getEntryKind() != IIncludePathEntry.CPE_PROJECT)
  			return false;
  		if (!cpe.getPath().equals(getResourcePath()))
  			return false;
  		return true;
  	}
  
  	public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException {
  		return isValid(pm, DIRTY);
  	}
  
  	private void modifyClassPath(IJavaScriptProject referencingProject, IProgressMonitor pm) throws JavaScriptModelException {
  		pm.beginTask("", 1); //$NON-NLS-1$
  		IIncludePathEntry[] oldEntries= referencingProject.getRawIncludepath();
  		IIncludePathEntry[] newEntries= new IIncludePathEntry[oldEntries.length];
  		for (int i= 0; i < newEntries.length; i++) {
  			if (isOurEntry(oldEntries[i]))
  				newEntries[i]= createModifiedEntry(oldEntries[i]);
  			else
  				newEntries[i]= oldEntries[i];
  		}
  		referencingProject.setRawIncludepath(newEntries, pm);
  		pm.done();
  	}
  
  	private void modifyClassPaths(IProgressMonitor pm) throws JavaScriptModelException {
  		IProject[] referencing= getProject().getReferencingProjects();
  		pm.beginTask(RefactoringCoreMessages.RenameJavaProjectChange_update, referencing.length);
  		for (int i= 0; i < referencing.length; i++) {
  			IJavaScriptProject jp= JavaScriptCore.create(referencing[i]);
  			if (jp != null && jp.exists()) {
  				modifyClassPath(jp, new SubProgressMonitor(pm, 1));
  			} else {
  				pm.worked(1);
  			}
  		}
  		pm.done();
  	}
  }
  