| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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.ltk.core.refactoring.participants; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IResourceDelta; |
| import org.eclipse.core.resources.IResourceDeltaVisitor; |
| import org.eclipse.core.resources.mapping.IResourceChangeDescriptionFactory; |
| import org.eclipse.core.resources.mapping.ResourceChangeValidator; |
| |
| import org.eclipse.ltk.core.refactoring.RefactoringStatus; |
| |
| /** |
| * A resource operation checker is a shared checker to collect all |
| * changes done by the refactoring and the participants to resources |
| * so that they can be validated as one change. A resource operation |
| * checker supersedes the {@link ValidateEditChecker}. So if clients |
| * add their content changes to this checker there is no need to add |
| * them to the {@link ValidateEditChecker} as well. |
| * <p> |
| * Note: this class is not intended to be extended by clients. |
| * </p> |
| * |
| * @see ResourceChangeValidator |
| * |
| * @since 3.2 |
| */ |
| public class ResourceChangeChecker implements IConditionChecker { |
| |
| private IResourceChangeDescriptionFactory fDeltaFactory; |
| |
| public ResourceChangeChecker() { |
| fDeltaFactory= ResourceChangeValidator.getValidator().createDeltaFactory(); |
| } |
| |
| /** |
| * A helper method to check a set of changed files. |
| * |
| * @param files the array of files that change |
| * @param monitor a progress monitor to report progress or <code>null</code> |
| * if progress reporting is not desired |
| * |
| * @return a refactoring status containing the detect problems |
| * @throws CoreException a {@link CoreException} if an error occurs |
| * |
| * @see ResourceChangeValidator#validateChange(IResourceDelta, IProgressMonitor) |
| */ |
| public static RefactoringStatus checkFilesToBeChanged(IFile[] files, IProgressMonitor monitor) throws CoreException { |
| ResourceChangeChecker checker= new ResourceChangeChecker(); |
| for (int i= 0; i < files.length; i++) { |
| checker.getDeltaFactory().change(files[i]); |
| } |
| return checker.check(monitor); |
| } |
| |
| /** |
| * Returns the delta factory to be used to record resource |
| * operations. |
| * |
| * @return the delta factory |
| */ |
| public IResourceChangeDescriptionFactory getDeltaFactory() { |
| return fDeltaFactory; |
| } |
| |
| public RefactoringStatus check(IProgressMonitor monitor) throws CoreException { |
| IStatus status= ResourceChangeValidator.getValidator().validateChange(fDeltaFactory.getDelta(), monitor); |
| return createFrom(status); |
| } |
| |
| /* package */ IFile[] getChangedFiles() throws CoreException { |
| IResourceDelta root= fDeltaFactory.getDelta(); |
| final List result= new ArrayList(); |
| root.accept(new IResourceDeltaVisitor() { |
| public boolean visit(IResourceDelta delta) throws CoreException { |
| final IResource resource= delta.getResource(); |
| if (resource.getType() == IResource.FILE) { |
| final int kind= delta.getKind(); |
| if (isSet(kind, IResourceDelta.CHANGED)) { |
| result.add(resource); |
| } else if (isSet(kind, IResourceDelta.ADDED) && isSet(delta.getFlags(), IResourceDelta.CONTENT | IResourceDelta.MOVED_FROM)) { |
| final IFile movedFrom= resource.getWorkspace().getRoot().getFile(delta.getMovedFromPath()); |
| result.add(movedFrom); |
| } |
| } |
| return true; |
| } |
| }); |
| return (IFile[]) result.toArray(new IFile[result.size()]); |
| } |
| |
| private static final boolean isSet(int flags, int flag) { |
| return (flags & flag) == flag; |
| } |
| |
| private static RefactoringStatus createFrom(IStatus status) { |
| if (status.isOK()) |
| return new RefactoringStatus(); |
| |
| if (!status.isMultiStatus()) { |
| switch (status.getSeverity()) { |
| case IStatus.OK : |
| return new RefactoringStatus(); |
| case IStatus.INFO : |
| return RefactoringStatus.createInfoStatus(status.getMessage()); |
| case IStatus.WARNING : |
| return RefactoringStatus.createWarningStatus(status.getMessage()); |
| case IStatus.ERROR : |
| return RefactoringStatus.createErrorStatus(status.getMessage()); |
| case IStatus.CANCEL : |
| return RefactoringStatus.createFatalErrorStatus(status.getMessage()); |
| default : |
| return RefactoringStatus.createFatalErrorStatus(status.getMessage()); |
| } |
| } else { |
| IStatus[] children= status.getChildren(); |
| RefactoringStatus result= new RefactoringStatus(); |
| for (int i= 0; i < children.length; i++) { |
| result.merge(createFrom(children[i])); |
| } |
| return result; |
| } |
| } |
| } |