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.reorg;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  import org.eclipse.core.resources.IContainer;
  import org.eclipse.core.resources.IFile;
  import org.eclipse.core.resources.IResource;
  import org.eclipse.core.resources.mapping.IResourceChangeDescriptionFactory;
  import org.eclipse.core.resources.mapping.ResourceMapping;
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.ltk.core.refactoring.RefactoringStatus;
  import org.eclipse.ltk.core.refactoring.participants.CopyArguments;
  import org.eclipse.ltk.core.refactoring.participants.IParticipantDescriptorFilter;
  import org.eclipse.ltk.core.refactoring.participants.ParticipantManager;
  import org.eclipse.ltk.core.refactoring.participants.RefactoringArguments;
  import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;
  import org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor;
  import org.eclipse.ltk.core.refactoring.participants.SharableParticipants;
  import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
  import org.eclipse.wst.jsdt.core.IJavaScriptElement;
  import org.eclipse.wst.jsdt.core.IPackageFragment;
  import org.eclipse.wst.jsdt.core.IPackageFragmentRoot;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.participants.ResourceModifications;
  import org.eclipse.wst.jsdt.internal.corext.util.JavaElementResourceMapping;
  
  public class CopyModifications extends RefactoringModifications {
  	
  	private List fCopies;
  	private List fCopyArguments;
  	private List fParticipantDescriptorFilter;
  	
  	public CopyModifications() {
  		fCopies= new ArrayList();
  		fCopyArguments= new ArrayList();
  		fParticipantDescriptorFilter= new ArrayList();
  	}
  	
  	public void copy(IResource resource, CopyArguments args) {
  		add(resource, args, null);
  	}
  	
  	public void copy(IJavaScriptElement element, CopyArguments javaArgs, CopyArguments resourceArgs) throws CoreException {
  		switch(element.getElementType()) {
  			case IJavaScriptElement.PACKAGE_FRAGMENT_ROOT:
  				copy((IPackageFragmentRoot)element, javaArgs, resourceArgs);
  				break;
  			case IJavaScriptElement.PACKAGE_FRAGMENT:
  				copy((IPackageFragment)element, javaArgs, resourceArgs);
  				break;
  			case IJavaScriptElement.JAVASCRIPT_UNIT:
  				copy((IJavaScriptUnit)element, javaArgs, resourceArgs);
  				break;
  			default:
  				add(element, javaArgs, null);
  		}
  	}
  
  	public void copy(IPackageFragmentRoot sourceFolder, CopyArguments javaArgs, CopyArguments resourceArgs) {
  		add(sourceFolder, javaArgs, null);
  		ResourceMapping mapping= JavaElementResourceMapping.create(sourceFolder);
  		if (mapping != null) {
  			add(mapping, resourceArgs, null);
  		}
  		IResource sourceResource= sourceFolder.getResource();
  		if (sourceResource != null) {
  			getResourceModifications().addCopyDelta(sourceResource, resourceArgs);
  			IFile classpath= getClasspathFile((IResource) resourceArgs.getDestination());
  			if (classpath != null) {
  				getResourceModifications().addChanged(classpath);
  			}
  		}
  	}
  	
  	public void copy(IPackageFragment pack, CopyArguments javaArgs, CopyArguments resourceArgs) throws CoreException {
  		add(pack, javaArgs, null);
  		ResourceMapping mapping= JavaElementResourceMapping.create(pack);
  		if (mapping != null) {
  			add(mapping, resourceArgs, null);
  		}
  		IPackageFragmentRoot javaDestination= (IPackageFragmentRoot) javaArgs.getDestination();
  		if (javaDestination.getResource() == null)
  			return;
  		IPackageFragment newPack= javaDestination.getPackageFragment(pack.getElementName());
  		// Here we have a special case. When we copy a package into the same source
  		// folder than the user will choose an "unused" name at the end which will
  		// lead to the fact that we can copy the pack. Unfortunately we don't know
  		// the new name yet, so we use the current package name.
  		if (!pack.hasSubpackages() && (!newPack.exists() || pack.equals(newPack))) {
  			// we can do a simple move
  			IContainer resourceDestination= newPack.getResource().getParent();
  			createIncludingParents(resourceDestination);
  			getResourceModifications().addCopyDelta(pack.getResource(), resourceArgs);
  		} else {
  			IContainer resourceDestination= (IContainer) newPack.getResource();
  			createIncludingParents(resourceDestination);
  			CopyArguments arguments= new CopyArguments(resourceDestination, resourceArgs.getExecutionLog());
  			IResource[] resourcesToCopy= collectResourcesOfInterest(pack);
  			for (int i= 0; i < resourcesToCopy.length; i++) {
  				IResource toCopy= resourcesToCopy[i];
  				getResourceModifications().addCopyDelta(toCopy, arguments);
  			}
  		}
  	}
  
  	public void copy(IJavaScriptUnit unit, CopyArguments javaArgs, CopyArguments resourceArgs) throws CoreException {
  		add(unit, javaArgs, null);
  		ResourceMapping mapping= JavaElementResourceMapping.create(unit);
  		if (mapping != null) {
  			add(mapping, resourceArgs, null);
  		}
  		if (unit.getResource() != null) {
  			getResourceModifications().addCopyDelta(unit.getResource(), resourceArgs);
  		}
  	}
  
  	public void buildDelta(IResourceChangeDescriptionFactory builder) {
  		for (int i= 0; i < fCopies.size(); i++) {
  			Object element= fCopies.get(i);
  			if (element instanceof IResource) {
  				ResourceModifications.buildCopyDelta(builder, (IResource) element, (CopyArguments) fCopyArguments.get(i));
  			}
  		}
  		getResourceModifications().buildDelta(builder);
  	}
  	
  	public RefactoringParticipant[] loadParticipants(RefactoringStatus status, RefactoringProcessor owner, String[] natures, SharableParticipants shared) {
  		List result= new ArrayList();
  		for (int i= 0; i < fCopies.size(); i++) {
  			result.addAll(Arrays.asList(ParticipantManager.loadCopyParticipants(status, 
  				owner, fCopies.get(i), 
  				(CopyArguments) fCopyArguments.get(i), 
  				(IParticipantDescriptorFilter) fParticipantDescriptorFilter.get(i), 
  				natures, shared)));
  		}
  		result.addAll(Arrays.asList(getResourceModifications().getParticipants(status, owner, natures, shared)));
  		return (RefactoringParticipant[]) result.toArray(new RefactoringParticipant[result.size()]);
  	}
  	
  	private void add(Object element, RefactoringArguments args, IParticipantDescriptorFilter filter) {
  		Assert.isNotNull(element);
  		Assert.isNotNull(args);
  		fCopies.add(element);
  		fCopyArguments.add(args);
  		fParticipantDescriptorFilter.add(filter);
  	}
  } 
  