core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CopyResourceElementsOperation.java - cdt/org.eclipse.cdt - Git at Google

 package org.eclipse.cdt.internal.core.model;

 /*
  * (c) Copyright QNX Software Systems Ltd. 2002.
  * All Rights Reserved.
  */

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;

 import org.eclipse.cdt.core.model.CModelException;
 import org.eclipse.cdt.core.model.ICElement;
 import org.eclipse.cdt.core.model.ICElementDelta;
 import org.eclipse.cdt.core.model.ICModelStatus;
 import org.eclipse.cdt.core.model.ICModelStatusConstants;
 import org.eclipse.cdt.core.model.ICProject;
 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.Path;

 /**
  * This operation copies/moves/renames a collection of resources from their current
  * container to a new container, optionally renaming the
  * elements.
  * <p>Notes:<ul>
  *    <li>If there is already an resource with the same name in
  *    the new container, the operation either overwrites or aborts,
  *    depending on the collision policy setting. The default setting is
  *    abort.
  *
  *    <li>The collection of elements being copied must all share the
  *    same type of container.
  *
  *    <li>This operation can be used to copy and rename elements within
  *    the same container.
  *
  *    <li>This operation only copies translation units.
  * </ul>
  *
  */
 public class CopyResourceElementsOperation extends MultiOperation {

 	/**
 	 * The list of new resources created during this operation.
 	 */
 	protected ArrayList fCreatedElements;

 	/**
 	 * Table specifying deltas for elements being
 	 * copied/moved/renamed. Keyed by elements' project(s), and
 	 * values are the corresponding deltas.
 	 */
 	protected Map fDeltasPerProject= new HashMap(1);

 	public CopyResourceElementsOperation(ICElement[] src, ICElement[] dst, boolean force) {
 		super(src, dst, force);
 	}

 	/**
 	 * Returns the <code>CElementDelta</code> for <code>cProject</code>,
 	 * creating it and putting it in <code>fDeltasPerProject</code> if
 	 * it does not exist yet.
 	 */
 	private CElementDelta getDeltaFor(ICProject cProject) {
 		CElementDelta delta = (CElementDelta) fDeltasPerProject.get(cProject);
 		if (delta == null) {
 			delta = new CElementDelta(cProject);
 			fDeltasPerProject.put(cProject, delta);
 		}
 		return delta;
 	}

 	/**
 	 * @see MultiOperation
 	 */
 	protected String getMainTaskName() {
 		return "operation.copyResourceProgress"; //$NON-NLS-1$
 	}

 	/**
 	 * Sets the deltas to register the changes resulting from this operation
 	 * for this source element and its destination.
 	 * If the operation is a cross project operation<ul>
 	 * <li>On a copy, the delta should be rooted in the dest project
 	 * <li>On a move, two deltas are generated<ul>
 	 *                      <li>one rooted in the source project
 	 *                      <li>one rooted in the destination project</ul></ul>
 	 * If the operation is rooted in a single project, the delta is rooted in that project
 	 *
 	 */
 	protected void prepareDeltas(ICElement sourceElement, ICElement destinationElement) {
 		ICProject destProject = destinationElement.getCProject();
 		if (isMove()) {
 			ICProject sourceProject = sourceElement.getCProject();
 			getDeltaFor(sourceProject).movedFrom(sourceElement, destinationElement);
 			getDeltaFor(destProject).movedTo(destinationElement, sourceElement);
 		} else {
 			getDeltaFor(destProject).added(destinationElement);
 		}
 	}

 	/**
 	 * Process all of the changed deltas generated by this operation.
 	 */
 	protected void processDeltas() {
 		for (Iterator deltas = this.fDeltasPerProject.values().iterator(); deltas.hasNext();){
 			addDelta((ICElementDelta) deltas.next());
 		}
 	}

 	/**
 	 * Copies/moves a compilation unit with the name <code>newName</code>
 	 * to the destination package.<br>
 	 * The package statement in the compilation unit is updated if necessary.
 	 * The main type of the compilation unit is renamed if necessary.
 	 *
 	 * @exception JavaModelException if the operation is unable to
 	 * complete
 	 */
 	private void processResource(ICElement source, ICElement dest) throws CModelException {
 		String newName = getNewNameFor(source);
 		String destName = (newName != null) ? newName : source.getElementName();

 		// copy resource
 		IFile sourceResource = (IFile)source.getResource();
 		// can be an IFolder or an IProject
 		IContainer destFolder = (IContainer)dest.getResource();
 		IFile destFile = destFolder.getFile(new Path(destName));
 		if (!destFile.equals(sourceResource)) {
 			try {
 				if (destFile.exists()) {
 					if (fForce) {
 						// we can remove it
 						deleteResource(destFile, false);
 					} else {
 						// abort
 						throw new CModelException(new CModelStatus(ICModelStatusConstants.NAME_COLLISION));
 					}
 				}
 				if (this.isMove()) {
 					sourceResource.move(destFile.getFullPath(), fForce, true, getSubProgressMonitor(1));
 				} else {
 					sourceResource.copy(destFile.getFullPath(), fForce, getSubProgressMonitor(1));
 				}
 				this.hasModifiedResource = true;
 			} catch (CModelException e) {
 				throw e;
 			} catch (CoreException e) {
 				throw new CModelException(e);
 			}

 			// update new resource content

 			// register the correct change deltas
 			ICElement cdest = CModelManager.getDefault().create(destFile);
 			prepareDeltas(source, cdest);
 			fCreatedElements.add(cdest);
 			//if (newName != null) {
 				//the main type has been renamed
 				//String oldName = source.getElementName();
 				//oldName = oldName.substring(0, oldName.length() - 5);
 				//String nName = newName;
 				//nName = nName.substring(0, nName.length() - 5);
 				//prepareDeltas(source.getType(oldName), cdest.getType(nName));
 			//}
 		} else {
 			if (!fForce) {
 				throw new CModelException(new CModelStatus(ICModelStatusConstants.NAME_COLLISION));
 			}
 			// update new resource content
 			// in case we do a saveas on the same resource we have to simply update the contents
 			// see http://dev.eclipse.org/bugs/show_bug.cgi?id=9351
 		}
 	}

 	/**
 	 * @see MultiOperation
 	 * This method delegates to <code>processResource</code> or
 	 * <code>processPackageFragmentResource</code>, depending on the type of
 	 * <code>element</code>.
 	 */
 	protected void processElement(ICElement element) throws CModelException {
 		ICElement dest = getDestinationParent(element);
 		if (element.getElementType() <= ICElement.C_UNIT) {
 			processResource(element, dest);
 			//fCreatedElements.add(dest.getCompilationUnit(element.getElementName()));
 		} else {
 			throw new CModelException(new CModelStatus(ICModelStatusConstants.INVALID_ELEMENT_TYPES, element));
 		}
 	}

 	/**
 	 * @see MultiOperation
 	 * Overridden to allow special processing of <code>CElementDelta</code>s
 	 * and <code>fResultElements</code>.
 	 */
 	protected void processElements() throws CModelException {
 		fCreatedElements = new ArrayList(fElementsToProcess.length);
 		try {
 			super.processElements();
 		} catch (CModelException cme) {
 			throw cme;
 		} finally {
 			fResultElements = new ICElement[fCreatedElements.size()];
 			fCreatedElements.toArray(fResultElements);
 			processDeltas();
 		}
 	}

 	/**
 	 * Possible failures:
 	 * <ul>
 	 *  <li>NO_ELEMENTS_TO_PROCESS - no elements supplied to the operation
 	 *      <li>INDEX_OUT_OF_BOUNDS - the number of renamings supplied to the operation
 	 *              does not match the number of elements that were supplied.
 	 * </ul>
 	 */
 	protected ICModelStatus verify() {
 		ICModelStatus status = super.verify();
 		if (!status.isOK()) {
 			return status;
 		}

 		if (fRenamingsList != null && fRenamingsList.length != fElementsToProcess.length) {
 			return new CModelStatus(ICModelStatusConstants.INDEX_OUT_OF_BOUNDS);
 		}
 		return CModelStatus.VERIFIED_OK;
 	}

 	/**
 	 * @see MultiOperation
 	 */
 	protected void verify(ICElement element) throws CModelException {
 		if (element == null || !element.exists())
 			error(ICModelStatusConstants.ELEMENT_DOES_NOT_EXIST, element);

 		if (element.isReadOnly() && (isRename() || isMove()))
 			error(ICModelStatusConstants.READ_ONLY, element);

 		CElement dest = (CElement) getDestinationParent(element);
 		verifyDestination(element, dest);
 		if (fRenamings != null) {
 			verifyRenaming(element);
 		}
 	}
 }
	package org.eclipse.cdt.internal.core.model;

	/*
	* (c) Copyright QNX Software Systems Ltd. 2002.
	* All Rights Reserved.
	*/

	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.Map;

	import org.eclipse.cdt.core.model.CModelException;
	import org.eclipse.cdt.core.model.ICElement;
	import org.eclipse.cdt.core.model.ICElementDelta;
	import org.eclipse.cdt.core.model.ICModelStatus;
	import org.eclipse.cdt.core.model.ICModelStatusConstants;
	import org.eclipse.cdt.core.model.ICProject;
	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.Path;

	/**
	* This operation copies/moves/renames a collection of resources from their current
	* container to a new container, optionally renaming the
	* elements.
	* <p>Notes:<ul>
	* <li>If there is already an resource with the same name in
	* the new container, the operation either overwrites or aborts,
	* depending on the collision policy setting. The default setting is
	* abort.
	*
	* <li>The collection of elements being copied must all share the
	* same type of container.
	*
	* <li>This operation can be used to copy and rename elements within
	* the same container.
	*
	* <li>This operation only copies translation units.
	* </ul>
	*
	*/
	public class CopyResourceElementsOperation extends MultiOperation {

	/**
	* The list of new resources created during this operation.
	*/
	protected ArrayList fCreatedElements;

	/**
	* Table specifying deltas for elements being
	* copied/moved/renamed. Keyed by elements' project(s), and
	* values are the corresponding deltas.
	*/
	protected Map fDeltasPerProject= new HashMap(1);

	public CopyResourceElementsOperation(ICElement[] src, ICElement[] dst, boolean force) {
	super(src, dst, force);
	}

	/**
	* Returns the <code>CElementDelta</code> for <code>cProject</code>,
	* creating it and putting it in <code>fDeltasPerProject</code> if
	* it does not exist yet.
	*/
	private CElementDelta getDeltaFor(ICProject cProject) {
	CElementDelta delta = (CElementDelta) fDeltasPerProject.get(cProject);
	if (delta == null) {
	delta = new CElementDelta(cProject);
	fDeltasPerProject.put(cProject, delta);
	}
	return delta;
	}

	/**
	* @see MultiOperation
	*/
	protected String getMainTaskName() {
	return "operation.copyResourceProgress"; //$NON-NLS-1$
	}

	/**
	* Sets the deltas to register the changes resulting from this operation
	* for this source element and its destination.
	* If the operation is a cross project operation<ul>
	* <li>On a copy, the delta should be rooted in the dest project
	* <li>On a move, two deltas are generated<ul>
	* <li>one rooted in the source project
	* <li>one rooted in the destination project</ul></ul>
	* If the operation is rooted in a single project, the delta is rooted in that project
	*
	*/
	protected void prepareDeltas(ICElement sourceElement, ICElement destinationElement) {
	ICProject destProject = destinationElement.getCProject();
	if (isMove()) {
	ICProject sourceProject = sourceElement.getCProject();
	getDeltaFor(sourceProject).movedFrom(sourceElement, destinationElement);
	getDeltaFor(destProject).movedTo(destinationElement, sourceElement);
	} else {
	getDeltaFor(destProject).added(destinationElement);
	}
	}

	/**
	* Process all of the changed deltas generated by this operation.
	*/
	protected void processDeltas() {
	for (Iterator deltas = this.fDeltasPerProject.values().iterator(); deltas.hasNext();){
	addDelta((ICElementDelta) deltas.next());
	}
	}

	/**
	* Copies/moves a compilation unit with the name <code>newName</code>
	* to the destination package.<br>
	* The package statement in the compilation unit is updated if necessary.
	* The main type of the compilation unit is renamed if necessary.
	*
	* @exception JavaModelException if the operation is unable to
	* complete
	*/
	private void processResource(ICElement source, ICElement dest) throws CModelException {
	String newName = getNewNameFor(source);
	String destName = (newName != null) ? newName : source.getElementName();

	// copy resource
	IFile sourceResource = (IFile)source.getResource();
	// can be an IFolder or an IProject
	IContainer destFolder = (IContainer)dest.getResource();
	IFile destFile = destFolder.getFile(new Path(destName));
	if (!destFile.equals(sourceResource)) {
	try {
	if (destFile.exists()) {
	if (fForce) {
	// we can remove it
	deleteResource(destFile, false);
	} else {
	// abort
	throw new CModelException(new CModelStatus(ICModelStatusConstants.NAME_COLLISION));
	}
	}
	if (this.isMove()) {
	sourceResource.move(destFile.getFullPath(), fForce, true, getSubProgressMonitor(1));
	} else {
	sourceResource.copy(destFile.getFullPath(), fForce, getSubProgressMonitor(1));
	}
	this.hasModifiedResource = true;
	} catch (CModelException e) {
	throw e;
	} catch (CoreException e) {
	throw new CModelException(e);
	}

	// update new resource content

	// register the correct change deltas
	ICElement cdest = CModelManager.getDefault().create(destFile);
	prepareDeltas(source, cdest);
	fCreatedElements.add(cdest);
	//if (newName != null) {
	//the main type has been renamed
	//String oldName = source.getElementName();
	//oldName = oldName.substring(0, oldName.length() - 5);
	//String nName = newName;
	//nName = nName.substring(0, nName.length() - 5);
	//prepareDeltas(source.getType(oldName), cdest.getType(nName));
	//}
	} else {
	if (!fForce) {
	throw new CModelException(new CModelStatus(ICModelStatusConstants.NAME_COLLISION));
	}
	// update new resource content
	// in case we do a saveas on the same resource we have to simply update the contents
	// see http://dev.eclipse.org/bugs/show_bug.cgi?id=9351
	}
	}

	/**
	* @see MultiOperation
	* This method delegates to <code>processResource</code> or
	* <code>processPackageFragmentResource</code>, depending on the type of
	* <code>element</code>.
	*/
	protected void processElement(ICElement element) throws CModelException {
	ICElement dest = getDestinationParent(element);
	if (element.getElementType() <= ICElement.C_UNIT) {
	processResource(element, dest);
	//fCreatedElements.add(dest.getCompilationUnit(element.getElementName()));
	} else {
	throw new CModelException(new CModelStatus(ICModelStatusConstants.INVALID_ELEMENT_TYPES, element));
	}
	}

	/**
	* @see MultiOperation
	* Overridden to allow special processing of <code>CElementDelta</code>s
	* and <code>fResultElements</code>.
	*/
	protected void processElements() throws CModelException {
	fCreatedElements = new ArrayList(fElementsToProcess.length);
	try {
	super.processElements();
	} catch (CModelException cme) {
	throw cme;
	} finally {
	fResultElements = new ICElement[fCreatedElements.size()];
	fCreatedElements.toArray(fResultElements);
	processDeltas();
	}
	}

	/**
	* Possible failures:
	* <ul>
	* <li>NO_ELEMENTS_TO_PROCESS - no elements supplied to the operation
	* <li>INDEX_OUT_OF_BOUNDS - the number of renamings supplied to the operation
	* does not match the number of elements that were supplied.
	* </ul>
	*/
	protected ICModelStatus verify() {
	ICModelStatus status = super.verify();
	if (!status.isOK()) {
	return status;
	}

	if (fRenamingsList != null && fRenamingsList.length != fElementsToProcess.length) {
	return new CModelStatus(ICModelStatusConstants.INDEX_OUT_OF_BOUNDS);
	}
	return CModelStatus.VERIFIED_OK;
	}

	/**
	* @see MultiOperation
	*/
	protected void verify(ICElement element) throws CModelException {
	if (element == null \|\| !element.exists())
	error(ICModelStatusConstants.ELEMENT_DOES_NOT_EXIST, element);

	if (element.isReadOnly() && (isRename() \|\| isMove()))
	error(ICModelStatusConstants.READ_ONLY, element);

	CElement dest = (CElement) getDestinationParent(element);
	verifyDestination(element, dest);
	if (fRenamings != null) {
	verifyRenaming(element);
	}
	}
	}