| /******************************************************************************* |
| * Copyright (c) 2007, 2016 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.internal.core.refactoring.resource; |
| |
| import java.net.URI; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.OperationCanceledException; |
| |
| import org.eclipse.core.resources.IContainer; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IFolder; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IResourceVisitor; |
| import org.eclipse.core.resources.mapping.IResourceChangeDescriptionFactory; |
| |
| import org.eclipse.core.filebuffers.FileBuffers; |
| import org.eclipse.core.filebuffers.ITextFileBuffer; |
| import org.eclipse.core.filebuffers.LocationKind; |
| |
| import org.eclipse.ltk.core.refactoring.Change; |
| import org.eclipse.ltk.core.refactoring.CompositeChange; |
| import org.eclipse.ltk.core.refactoring.RefactoringChangeDescriptor; |
| import org.eclipse.ltk.core.refactoring.RefactoringDescriptor; |
| import org.eclipse.ltk.core.refactoring.RefactoringStatus; |
| import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext; |
| import org.eclipse.ltk.core.refactoring.participants.DeleteArguments; |
| import org.eclipse.ltk.core.refactoring.participants.DeleteParticipant; |
| import org.eclipse.ltk.core.refactoring.participants.DeleteProcessor; |
| import org.eclipse.ltk.core.refactoring.participants.ParticipantManager; |
| import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant; |
| import org.eclipse.ltk.core.refactoring.participants.ResourceChangeChecker; |
| import org.eclipse.ltk.core.refactoring.participants.SharableParticipants; |
| import org.eclipse.ltk.core.refactoring.resource.DeleteResourceChange; |
| import org.eclipse.ltk.core.refactoring.resource.DeleteResourcesDescriptor; |
| import org.eclipse.ltk.internal.core.refactoring.BasicElementLabels; |
| import org.eclipse.ltk.internal.core.refactoring.Messages; |
| import org.eclipse.ltk.internal.core.refactoring.RefactoringCoreMessages; |
| import org.eclipse.ltk.internal.core.refactoring.Resources; |
| |
| /** |
| * A delete processor for {@link IResource resources}. The processor will delete the resources and |
| * load delete participants if references should be deleted as well. |
| * |
| * @since 3.4 |
| */ |
| public class DeleteResourcesProcessor extends DeleteProcessor { |
| private IResource[] fResources; |
| private boolean fDeleteContents; |
| |
| /** |
| * Create a new delete processor. Same as DeleteResourcesProcessor(resources, true, false) |
| * @param resources the resources to delete. They can be either {@link IProject} or {@link IFile} and {@link IFolder}. |
| */ |
| public DeleteResourcesProcessor(IResource[] resources) { |
| this(resources, false); |
| } |
| |
| /** |
| * Create a new delete processor. |
| * @param resources the resources to delete. They can be either {@link IProject} or {@link IFile} and {@link IFolder}. |
| * @param deleteContents <code>true</code> if this will delete the project contents. The content delete is not undoable. |
| */ |
| public DeleteResourcesProcessor(IResource[] resources, boolean deleteContents) { |
| fResources= removeDescendants(resources); |
| fDeleteContents= deleteContents; |
| } |
| |
| /** |
| * Returns the resources to delete. |
| * |
| * @return the resources to delete. |
| */ |
| public IResource[] getResourcesToDelete() { |
| return fResources; |
| } |
| |
| /** |
| * Delete projects contents. |
| * @return <code>true</code> if this will delete the project contents. The content delete is not undoable. |
| */ |
| public boolean isDeleteContents() { |
| return fDeleteContents; |
| } |
| |
| /** |
| * Set to delete the projects content. |
| * @param deleteContents <code>true</code> if this will delete the project contents. The content delete is not undoable. |
| */ |
| public void setDeleteContents(boolean deleteContents) { |
| fDeleteContents= deleteContents; |
| } |
| |
| @Override |
| public RefactoringStatus checkInitialConditions(IProgressMonitor pm) throws CoreException, OperationCanceledException { |
| // allow only projects or only non-projects to be selected; |
| // note that the selection may contain multiple types of resource |
| if (!(Resources.containsOnlyProjects(fResources) || Resources.containsOnlyNonProjects(fResources))) { |
| return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.DeleteResourcesProcessor_delete_error_mixed_types); |
| } |
| |
| return new RefactoringStatus(); |
| } |
| |
| @Override |
| public RefactoringStatus checkFinalConditions(IProgressMonitor pm, CheckConditionsContext context) throws CoreException, OperationCanceledException { |
| pm.beginTask("", 1); //$NON-NLS-1$ |
| try { |
| RefactoringStatus result= new RefactoringStatus(); |
| |
| for (int i= 0; i < fResources.length; i++) { |
| IResource resource= fResources[i]; |
| if (!isSynchronizedExcludingLinkedResources(resource)) { |
| String pathLabel= BasicElementLabels.getPathLabel(resource.getFullPath(), false); |
| |
| String locationLabel= null; |
| IPath location= resource.getLocation(); |
| if (location != null) { |
| locationLabel= BasicElementLabels.getPathLabel(location, true); |
| } else { |
| URI uri= resource.getLocationURI(); |
| if (uri != null) { |
| locationLabel= BasicElementLabels.getURLPart(uri.toString()); |
| } |
| } |
| |
| String warning; |
| if (resource instanceof IFile) { |
| if (locationLabel != null) { |
| warning= Messages.format(RefactoringCoreMessages.DeleteResourcesProcessor_warning_out_of_sync_file_loc, new Object[] { pathLabel, locationLabel }); |
| } else { |
| warning= Messages.format(RefactoringCoreMessages.DeleteResourcesProcessor_warning_out_of_sync_file, pathLabel); |
| } |
| } else { |
| if (locationLabel != null) { |
| warning= Messages.format(RefactoringCoreMessages.DeleteResourcesProcessor_warning_out_of_sync_container_loc, new Object[] { pathLabel, locationLabel }); |
| } else { |
| warning= Messages.format(RefactoringCoreMessages.DeleteResourcesProcessor_warning_out_of_sync_container, pathLabel); |
| } |
| } |
| result.addWarning(warning); |
| } |
| } |
| |
| checkDirtyResources(result); |
| |
| ResourceChangeChecker checker= context.getChecker(ResourceChangeChecker.class); |
| IResourceChangeDescriptionFactory deltaFactory= checker.getDeltaFactory(); |
| for (int i= 0; i < fResources.length; i++) { |
| if (fResources[i].isPhantom()) { |
| result.addFatalError(Messages.format(RefactoringCoreMessages.DeleteResourcesProcessor_delete_error_phantom, BasicElementLabels.getPathLabel(fResources[i].getFullPath(), false))); |
| } else if (fDeleteContents && Resources.isReadOnly(fResources[i])) { |
| result.addFatalError(Messages.format(RefactoringCoreMessages.DeleteResourcesProcessor_delete_error_read_only, BasicElementLabels.getPathLabel(fResources[i].getFullPath(), false))); |
| } else { |
| deltaFactory.delete(fResources[i]); |
| } |
| } |
| return result; |
| } finally { |
| pm.done(); |
| } |
| } |
| |
| /** |
| * Checks whether this resource and its descendents are considered to be in sync with the local |
| * file system. The linked resources and their descendents are excluded from the check. |
| * |
| * @param resource the resource to check |
| * @return <code>true</code> if this resource and its descendents except linked resources are |
| * synchronized, and <code>false</code> in all other cases |
| * @throws CoreException if visiting the resource descendents fails for any reason |
| * @see IResource#isSynchronized(int) |
| */ |
| public boolean isSynchronizedExcludingLinkedResources(IResource resource) throws CoreException { |
| boolean[] result= { true }; |
| resource.accept(new IResourceVisitor() { |
| @Override |
| public boolean visit(IResource visitedResource) throws CoreException { |
| if (!result[0] || visitedResource.isLinked()) |
| return false; |
| if (!visitedResource.isSynchronized(IResource.DEPTH_ZERO)) { |
| result[0]= false; |
| return false; |
| } |
| return true; |
| } |
| }, IResource.DEPTH_INFINITE, IContainer.DO_NOT_CHECK_EXISTENCE); |
| return result[0]; |
| } |
| |
| private void checkDirtyResources(final RefactoringStatus result) throws CoreException { |
| for (int i= 0; i < fResources.length; i++) { |
| IResource resource= fResources[i]; |
| if (resource instanceof IProject && !((IProject) resource).isOpen()) |
| continue; |
| resource.accept(new IResourceVisitor() { |
| @Override |
| public boolean visit(IResource visitedResource) throws CoreException { |
| if (visitedResource instanceof IFile) { |
| checkDirtyFile(result, (IFile)visitedResource); |
| } |
| return true; |
| } |
| }, IResource.DEPTH_INFINITE, false); |
| } |
| } |
| |
| private void checkDirtyFile(RefactoringStatus result, IFile file) { |
| if (!file.exists()) |
| return; |
| ITextFileBuffer buffer= FileBuffers.getTextFileBufferManager().getTextFileBuffer(file.getFullPath(), LocationKind.IFILE); |
| if (buffer != null && buffer.isDirty()) { |
| String message= RefactoringCoreMessages.DeleteResourcesProcessor_warning_unsaved_file; |
| if (buffer.isStateValidated() && buffer.isSynchronized()) { |
| result.addWarning(Messages.format(message, BasicElementLabels.getPathLabel(file.getFullPath(), false))); |
| } else { |
| result.addFatalError(Messages.format(message, BasicElementLabels.getPathLabel(file.getFullPath(), false))); |
| } |
| } |
| } |
| |
| @Override |
| public Change createChange(IProgressMonitor pm) throws CoreException, OperationCanceledException { |
| pm.beginTask(RefactoringCoreMessages.DeleteResourcesProcessor_create_task, fResources.length); |
| try { |
| RefactoringChangeDescriptor descriptor= new RefactoringChangeDescriptor(createDescriptor()); |
| CompositeChange change= new CompositeChange(RefactoringCoreMessages.DeleteResourcesProcessor_change_name); |
| change.markAsSynthetic(); |
| for (int i= 0; i < fResources.length; i++) { |
| pm.worked(1); |
| DeleteResourceChange dc= new DeleteResourceChange(fResources[i].getFullPath(), true, fDeleteContents); |
| dc.setDescriptor(descriptor); |
| change.add(dc); |
| } |
| return change; |
| } finally { |
| pm.done(); |
| } |
| } |
| |
| protected DeleteResourcesDescriptor createDescriptor() { |
| DeleteResourcesDescriptor descriptor= new DeleteResourcesDescriptor(); |
| descriptor.setProject(null); |
| descriptor.setDescription(getDeleteDescription()); |
| descriptor.setComment(descriptor.getDescription()); |
| descriptor.setFlags(RefactoringDescriptor.STRUCTURAL_CHANGE | RefactoringDescriptor.MULTI_CHANGE | RefactoringDescriptor.BREAKING_CHANGE); |
| |
| descriptor.setDeleteContents(fDeleteContents); |
| descriptor.setResources(fResources); |
| return descriptor; |
| } |
| |
| private String getDeleteDescription() { |
| if (fResources.length == 1) { |
| return Messages.format(RefactoringCoreMessages.DeleteResourcesProcessor_description_single, BasicElementLabels.getPathLabel(fResources[0].getFullPath(), false)); |
| } |
| return Messages.format(RefactoringCoreMessages.DeleteResourcesProcessor_description_multi, new Integer(fResources.length)); |
| } |
| |
| @Override |
| public Object[] getElements() { |
| return fResources; |
| } |
| |
| @Override |
| public String getIdentifier() { |
| return "org.eclipse.ltk.core.refactoring.deleteResourcesProcessor"; //$NON-NLS-1$ |
| } |
| |
| @Override |
| public String getProcessorName() { |
| return RefactoringCoreMessages.DeleteResourcesProcessor_processor_name; |
| } |
| |
| @Override |
| public boolean isApplicable() throws CoreException { |
| for (int i= 0; i < fResources.length; i++) { |
| if (!canDelete(fResources[i])) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private boolean canDelete(IResource res) { |
| return res.isAccessible() && !res.isPhantom(); |
| } |
| |
| @Override |
| public RefactoringParticipant[] loadParticipants(RefactoringStatus status, SharableParticipants sharedParticipants) throws CoreException { |
| final ArrayList<DeleteParticipant> result= new ArrayList<>(); |
| if (!isApplicable()) { |
| return new RefactoringParticipant[0]; |
| } |
| |
| final String[] affectedNatures= ResourceProcessors.computeAffectedNatures(fResources); |
| final DeleteArguments deleteArguments= new DeleteArguments(fDeleteContents); |
| for (int i= 0; i < fResources.length; i++) { |
| result.addAll(Arrays.asList(ParticipantManager.loadDeleteParticipants(status, this, fResources[i], deleteArguments, affectedNatures, sharedParticipants))); |
| } |
| |
| return result.toArray(new RefactoringParticipant[result.size()]); |
| } |
| |
| private static IResource[] removeDescendants(IResource[] resources) { |
| ArrayList<IResource> result= new ArrayList<>(); |
| for (int i= 0; i < resources.length; i++) { |
| addToList(result, resources[i]); |
| } |
| return result.toArray(new IResource[result.size()]); |
| } |
| |
| private static void addToList(ArrayList<IResource> result, IResource curr) { |
| IPath currPath= curr.getFullPath(); |
| for (int k= result.size() - 1; k >= 0 ; k--) { |
| IResource other= result.get(k); |
| IPath otherPath= other.getFullPath(); |
| if (otherPath.isPrefixOf(currPath)) { |
| return; // current entry is a descendant of an entry in the list |
| } |
| if (currPath.isPrefixOf(otherPath)) { |
| result.remove(k); // entry in the list is a descendant of the current entry |
| } |
| } |
| result.add(curr); |
| } |
| |
| |
| } |