/*******************************************************************************
* Copyright (c) 2000, 2007 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
*
*******************************************************************************/
package org.eclipse.dltk.internal.corext.refactoring.reorg;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.eclipse.core.filebuffers.FileBuffers;
import org.eclipse.core.filebuffers.ITextFileBuffer;
import org.eclipse.core.filebuffers.LocationKind;
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.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.dltk.core.DLTKCore;
import org.eclipse.dltk.core.DLTKFeatures;
import org.eclipse.dltk.core.DLTKLanguageManager;
import org.eclipse.dltk.core.IDLTKLanguageToolkit;
import org.eclipse.dltk.core.IModelElement;
import org.eclipse.dltk.core.IProjectFragment;
import org.eclipse.dltk.core.IScriptFolder;
import org.eclipse.dltk.core.IScriptProject;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.dltk.core.IType;
import org.eclipse.dltk.core.ModelException;
import org.eclipse.dltk.internal.corext.refactoring.RefactoringAvailabilityTester;
import org.eclipse.dltk.internal.corext.refactoring.RefactoringCoreMessages;
import org.eclipse.dltk.internal.corext.refactoring.participants.ResourceProcessors;
import org.eclipse.dltk.internal.corext.refactoring.participants.ScriptProcessors;
import org.eclipse.dltk.internal.corext.refactoring.tagging.ICommentProvider;
import org.eclipse.dltk.internal.corext.refactoring.util.ModelElementUtil;
import org.eclipse.dltk.internal.corext.refactoring.util.ResourceUtil;
import org.eclipse.dltk.internal.corext.refactoring.util.TextChangeManager;
import org.eclipse.dltk.internal.corext.util.Messages;
import org.eclipse.dltk.internal.corext.util.Resources;
import org.eclipse.dltk.ui.DLTKUIPlugin;
import org.eclipse.ltk.core.refactoring.Change;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
import org.eclipse.ltk.core.refactoring.participants.DeleteProcessor;
import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;
import org.eclipse.ltk.core.refactoring.participants.ResourceChangeChecker;
import org.eclipse.ltk.core.refactoring.participants.SharableParticipants;
public final class ScriptDeleteProcessor extends DeleteProcessor implements ICommentProvider {
private boolean fWasCanceled;
private Object[] fElements;
private IResource[] fResources;
private IModelElement[] fScriptElements;
private IReorgQueries fDeleteQueries;
private DeleteModifications fDeleteModifications;
private String fComment;
private Change fDeleteChange;
private boolean fDeleteSubPackages;
public static final String IDENTIFIER= "org.eclipse.dltk.ui.DeleteProcessor"; //$NON-NLS-1$
public ScriptDeleteProcessor(Object[] elements) {
fElements= elements;
fResources= RefactoringAvailabilityTester.getResources(elements);
fScriptElements= RefactoringAvailabilityTester.getScriptElements(elements);
fDeleteSubPackages= false;
fWasCanceled= false;
}
//---- IRefactoringProcessor ---------------------------------------------------
public String getIdentifier() {
return IDENTIFIER;
}
public boolean isApplicable() throws CoreException {
if (fElements.length == 0)
return false;
if (fElements.length != fResources.length + fScriptElements.length)
return false;
for (int i= 0; i < fResources.length; i++) {
if (!RefactoringAvailabilityTester.isDeleteAvailable(fResources[i]))
return false;
}
for (int i= 0; i < fScriptElements.length; i++) {
if (!RefactoringAvailabilityTester.isDeleteAvailable(fScriptElements[i]))
return false;
}
return true;
}
public boolean needsProgressMonitor() {
if (fResources != null && fResources.length > 0)
return true;
if (fScriptElements != null) {
for (int i= 0; i < fScriptElements.length; i++) {
int type= fScriptElements[i].getElementType();
if (type <= IModelElement.SOURCE_MODULE)
return true;
}
}
return false;
}
public String getProcessorName() {
return RefactoringCoreMessages.DeleteRefactoring_7;
}
public Object[] getElements() {
return fElements;
}
public RefactoringParticipant[] loadParticipants(RefactoringStatus status, SharableParticipants shared) throws CoreException {
return fDeleteModifications.loadParticipants(status, this, getAffectedProjectNatures(), shared);
}
private String[] getAffectedProjectNatures() throws CoreException {
String[] jNatures= ScriptProcessors.computeAffectedNaturs(fScriptElements);
String[] rNatures= ResourceProcessors.computeAffectedNatures(fResources);
Set result= new HashSet();
result.addAll(Arrays.asList(jNatures));
result.addAll(Arrays.asList(rNatures));
return (String[])result.toArray(new String[result.size()]);
}
public void setDeleteSubPackages(boolean selection) {
fDeleteSubPackages= selection;
}
public boolean getDeleteSubPackages() {
return fDeleteSubPackages;
}
public boolean hasSubPackagesToDelete() {
try {
for (int i= 0; i < fScriptElements.length; i++) {
if (fScriptElements[i] instanceof IScriptFolder) {
IScriptFolder scriptFolder= (IScriptFolder) fScriptElements[i];
if (scriptFolder.isRootFolder())
continue; // see bug 132576 (can remove this if(..) continue; statement when bug is fixed)
if (scriptFolder.hasSubfolders())
return true;
}
}
} catch (ModelException e) {
DLTKUIPlugin.log(e);
}
return false;
}
public void setQueries(IReorgQueries queries){
Assert.isNotNull(queries);
fDeleteQueries= queries;
}
public IModelElement[] getScriptElementsToDelete(){
return fScriptElements;
}
public boolean wasCanceled() {
return fWasCanceled;
}
public IResource[] getResourcesToDelete(){
return fResources;
}
/* (non-Javadoc)
* @see org.eclipse.dltk.internal.corext.refactoring.base.Refactoring#checkActivation(org.eclipse.core.runtime.IProgressMonitor)
*/
public RefactoringStatus checkInitialConditions(IProgressMonitor pm) throws CoreException {
Assert.isNotNull(fDeleteQueries);//must be set before checking activation
RefactoringStatus result= new RefactoringStatus();
result.merge(RefactoringStatus.create(Resources.checkInSync(ReorgUtils.getNotLinked(fResources))));
IResource[] javaResources= ReorgUtils.getResources(fScriptElements);
result.merge(RefactoringStatus.create(Resources.checkInSync(ReorgUtils
.getNotLinked(javaResources))));
for (int i= 0; i < fScriptElements.length; i++) {
// IModelElement element= fScriptElements[i];
// if (element instanceof IType && ((IType)element).isAnonymous()) {
// // work around for bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=44450
// // result.addFatalError("Currently, there isn't any support to delete an anonymous type.");
// }
}
return result;
}
/* (non-Javadoc)
* @see org.eclipse.dltk.internal.corext.refactoring.base.Refactoring#checkInput(org.eclipse.core.runtime.IProgressMonitor)
*/
public RefactoringStatus checkFinalConditions(IProgressMonitor pm, CheckConditionsContext context) throws CoreException {
pm.beginTask(RefactoringCoreMessages.DeleteRefactoring_1, 1);
try{
fWasCanceled= false;
RefactoringStatus result= new RefactoringStatus();
recalculateElementsToDelete();
TextChangeManager manager= new TextChangeManager();
fDeleteChange= DeleteChangeCreator.createDeleteChange(manager, fResources, fScriptElements, getProcessorName());
checkDirtySourceModules(result);
checkDirtyResources(result);
fDeleteModifications= new DeleteModifications();
fDeleteModifications.delete(fResources);
fDeleteModifications.delete(fScriptElements);
fDeleteModifications.postProcess();
ResourceChangeChecker checker= (ResourceChangeChecker) context.getChecker(ResourceChangeChecker.class);
IResourceChangeDescriptionFactory deltaFactory= checker.getDeltaFactory();
fDeleteModifications.buildDelta(deltaFactory);
IFile[] files= getBuildpathFiles();
for (int i= 0; i < files.length; i++) {
deltaFactory.change(files[i]);
}
files= ResourceUtil.getFiles(manager.getAllSourceModules());
for (int i= 0; i < files.length; i++) {
deltaFactory.change(files[i]);
}
return result;
} catch (OperationCanceledException e) {
fWasCanceled= true;
throw e;
} catch (ModelException e){
throw e;
} catch (CoreException e) {
throw new ModelException(e);
} finally{
pm.done();
}
}
private void checkDirtySourceModules(RefactoringStatus result) throws CoreException {
if (fScriptElements == null || fScriptElements.length == 0)
return;
for (int je= 0; je < fScriptElements.length; je++) {
IModelElement element= fScriptElements[je];
if (element instanceof ISourceModule) {
checkDirtySourceModule(result, (ISourceModule)element);
} else if (element instanceof IScriptFolder) {
ISourceModule[] units= ((IScriptFolder)element).getSourceModules();
for (int u = 0; u < units.length; u++) {
checkDirtySourceModule(result, units[u]);
}
}
}
}
private void checkDirtySourceModule(RefactoringStatus result, ISourceModule cunit) {
IResource resource= cunit.getResource();
if (resource == null || resource.getType() != IResource.FILE)
return;
checkDirtyFile(result, (IFile)resource);
}
private void checkDirtyResources(final RefactoringStatus result) throws CoreException {
for (int i= 0; i < fResources.length; i++) {
IResource resource= fResources[i];
resource.accept(new IResourceVisitor() {
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 == null || !file.exists())
return;
ITextFileBuffer buffer= FileBuffers.getTextFileBufferManager().getTextFileBuffer(file.getFullPath(), LocationKind.NORMALIZE);
if (buffer != null && buffer.isDirty()) {
if (buffer.isStateValidated() && buffer.isSynchronized()) {
result.addWarning(Messages.format(
RefactoringCoreMessages.ScriptDeleteProcessor_unsaved_changes,
file.getFullPath().toString()));
} else {
result.addFatalError(Messages.format(
RefactoringCoreMessages.ScriptDeleteProcessor_unsaved_changes,
file.getFullPath().toString()));
}
}
}
/*
* The set of elements that will eventually be deleted may be very different from the set
* originally selected - there may be fewer, more or different elements.
* This method is used to calculate the set of elements that will be deleted - if necessary,
* it asks the user.
*/
private void recalculateElementsToDelete() throws CoreException {
//the sequence is critical here
if (fDeleteSubPackages) /* add subpackages first, to allow removing elements with parents in selection etc. */
addSubPackages();
removeElementsWithParentsInSelection(); /*ask before adding empty cus - you don't want to ask if you, for example delete
*the package, in which the cus live*/
removeUnconfirmedFoldersThatContainSourceFolders(); /* a selected folder may be a parent of a source folder
* we must inform the user about it and ask if ok to delete the folder*/
removeUnconfirmedReferencedArchives();
addEmptySourceModulesToDelete();
removeScriptElementsChildrenOfScriptElements();/*because adding cus may create elements (types in cus)
*whose parents are in selection*/
confirmDeletingReadOnly(); /*after empty cus - you want to ask for all cus that are to be deleted*/
addDeletableParentPackagesOnPackageDeletion(); /* do not change the sequence in fScriptElements after this method */
}
/**
* Adds all subpackages of the selected packages to the list of items to be
* deleted.
*
* @throws ModelException
*/
private void addSubPackages() throws ModelException {
final Set modelElements= new HashSet();
for (int i= 0; i < fScriptElements.length; i++) {
if (fScriptElements[i] instanceof IScriptFolder) {
modelElements.addAll(Arrays.asList(ModelElementUtil.getPackageAndSubpackages((IScriptFolder) fScriptElements[i])));
} else {
modelElements.add(fScriptElements[i]);
}
}
fScriptElements= (IModelElement[]) modelElements.toArray(new IModelElement[modelElements.size()]);
}
/**
* Add deletable parent packages to the list of items to delete.
*
* @throws CoreException
*/
private void addDeletableParentPackagesOnPackageDeletion() throws CoreException {
final List/* <IScriptFolder */initialPackagesToDelete= ReorgUtils.getElementsOfType(fScriptElements, IModelElement.SCRIPT_FOLDER);
if (initialPackagesToDelete.size() == 0)
return;
// Move from inner to outer packages
Collections.sort(initialPackagesToDelete, new Comparator() {
public int compare(Object arg0, Object arg1) {
IScriptFolder one= (IScriptFolder) arg0;
IScriptFolder two= (IScriptFolder) arg1;
return two.getElementName().compareTo(one.getElementName());
}
});
// Get resources andscriptelements which will be deleted as well
final Set/* <IResource> */deletedChildren= new HashSet();
deletedChildren.addAll(Arrays.asList(fResources));
for (int i= 0; i < fScriptElements.length; i++) {
if (!ReorgUtils.isInsideSourceModule(fScriptElements[i]))
deletedChildren.add(fScriptElements[i].getResource());
}
// new package list in the right sequence
final List/* <IScriptFolder */allFragmentsToDelete= new ArrayList();
for (Iterator outerIter= initialPackagesToDelete.iterator(); outerIter.hasNext();) {
final IScriptFolder currentScriptFolder= (IScriptFolder) outerIter.next();
// The package will at least be cleared
allFragmentsToDelete.add(currentScriptFolder);
if (canRemoveCompletely(currentScriptFolder, initialPackagesToDelete)) {
final IScriptFolder parent= ModelElementUtil.getParentSubpackage(currentScriptFolder);
if (parent != null && !initialPackagesToDelete.contains(parent)) {
final List/* <IScriptFolder> */emptyParents= new ArrayList();
addDeletableParentPackages(parent, initialPackagesToDelete, deletedChildren, emptyParents);
// Add parents in the right sequence (inner to outer)
allFragmentsToDelete.addAll(emptyParents);
}
}
}
// Remove resources in deleted packages; and the packages as well
final List/* <IModelElement> */modelElements= new ArrayList();
for (int i= 0; i < fScriptElements.length; i++) {
if (!(fScriptElements[i] instanceof IScriptFolder)) {
// remove children of deleted packages
final IScriptFolder frag= (IScriptFolder) fScriptElements[i].getAncestor(IModelElement.SCRIPT_FOLDER);
if (!allFragmentsToDelete.contains(frag))
modelElements.add(fScriptElements[i]);
}
}
// Re-add deleted packages - note the (new) sequence
modelElements.addAll(allFragmentsToDelete);
// Remove resources in deleted folders
final List/* <IResource> */resources= new ArrayList();
for (int i= 0; i < fResources.length; i++) {
IResource parent= fResources[i];
if (parent.getType() == IResource.FILE)
parent= parent.getParent();
if (!deletedChildren.contains(parent))
resources.add(fResources[i]);
}
fScriptElements= (IModelElement[]) modelElements.toArray(new IModelElement[modelElements.size()]);
fResources= (IResource[]) resources.toArray(new IResource[resources.size()]);
}
/**
* Returns true if this initially selected package is really deletable
* (if it has non-selected subpackages, it may only be cleared).
*
*/
private boolean canRemoveCompletely(IScriptFolder pack, List packagesToDelete) throws ModelException {
final IScriptFolder[] subPackages= ModelElementUtil.getPackageAndSubpackages(pack);
for (int i= 0; i < subPackages.length; i++) {
if (!(subPackages[i].equals(pack)) && !(packagesToDelete.contains(subPackages[i])))
return false;
}
return true;
}
/**
* Adds deletable parent packages of the fragment "frag" to the list
* "deletableParentPackages"; also adds the resources of those packages to the
* set "resourcesToDelete".
*
*/
private void addDeletableParentPackages(IScriptFolder frag, List initialPackagesToDelete, Set resourcesToDelete, List deletableParentPackages)
throws CoreException {
if (frag.getResource().isLinked()) {
final IConfirmQuery query= fDeleteQueries.createYesNoQuery(RefactoringCoreMessages.ScriptDeleteProcessor_confirm_linked_folder_delete, false, IReorgQueries.CONFIRM_DELETE_LINKED_PARENT);
if (!query.confirm(Messages.format(RefactoringCoreMessages.ScriptDeleteProcessor_delete_linked_folder_question, new String[] { frag.getResource().getName() })))
return;
}
final IResource[] children= (((IContainer) frag.getResource())).members();
for (int i= 0; i < children.length; i++) {
// Child must be a package fragment already in the list,
// or a resource which is deleted as well.
if (!resourcesToDelete.contains(children[i]))
return;
}
resourcesToDelete.add(frag.getResource());
deletableParentPackages.add(frag);
final IScriptFolder parent= ModelElementUtil.getParentSubpackage(frag);
if (parent != null && !initialPackagesToDelete.contains(parent))
addDeletableParentPackages(parent, initialPackagesToDelete, resourcesToDelete, deletableParentPackages);
}
// ask for confirmation of deletion of all package fragment roots that are
// on buildpaths of other projects
private void removeUnconfirmedReferencedArchives() throws ModelException {
String queryTitle= RefactoringCoreMessages.DeleteRefactoring_2;
IConfirmQuery query= fDeleteQueries.createYesYesToAllNoNoToAllQuery(queryTitle, true, IReorgQueries.CONFIRM_DELETE_REFERENCED_ARCHIVES);
removeUnconfirmedReferencedProjectFragments(query);
removeUnconfirmedReferencedArchiveFiles(query);
}
private void removeUnconfirmedReferencedArchiveFiles(IConfirmQuery query) throws ModelException, OperationCanceledException {
List filesToSkip= new ArrayList(0);
for (int i= 0; i < fResources.length; i++) {
IResource resource= fResources[i];
if (! (resource instanceof IFile))
continue;
IScriptProject project= DLTKCore.create(resource.getProject());
if (project == null || ! project.exists())
continue;
IProjectFragment root= project.findProjectFragment(resource.getFullPath());
if (root == null)
continue;
List referencingProjects= new ArrayList(1);
referencingProjects.add(root.getScriptProject());
referencingProjects.addAll(Arrays.asList(ModelElementUtil.getReferencingProjects(root)));
if (skipDeletingReferencedRoot(query, root, referencingProjects))
filesToSkip.add(resource);
}
removeFromSetToDelete((IFile[]) filesToSkip.toArray(new IFile[filesToSkip.size()]));
}
private void removeUnconfirmedReferencedProjectFragments(IConfirmQuery query) throws ModelException, OperationCanceledException {
List rootsToSkip= new ArrayList(0);
for (int i= 0; i < fScriptElements.length; i++) {
IModelElement element= fScriptElements[i];
if (! (element instanceof IProjectFragment))
continue;
IProjectFragment root= (IProjectFragment)element;
List referencingProjects= Arrays.asList(ModelElementUtil.getReferencingProjects(root));
if (skipDeletingReferencedRoot(query, root, referencingProjects))
rootsToSkip.add(root);
}
removeFromSetToDelete((IModelElement[]) rootsToSkip.toArray(new IModelElement[rootsToSkip.size()]));
}
private static boolean skipDeletingReferencedRoot(IConfirmQuery query, IProjectFragment root, List referencingProjects) throws OperationCanceledException {
if (referencingProjects.isEmpty() || root == null || ! root.exists() ||! root.isArchive())
return false;
String question= Messages.format(RefactoringCoreMessages.DeleteRefactoring_3, root.getElementName());
return ! query.confirm(question, referencingProjects.toArray());
}
private void removeUnconfirmedFoldersThatContainSourceFolders() throws CoreException {
String queryTitle= RefactoringCoreMessages.DeleteRefactoring_4;
IConfirmQuery query= fDeleteQueries.createYesYesToAllNoNoToAllQuery(queryTitle, true, IReorgQueries.CONFIRM_DELETE_FOLDERS_CONTAINING_SOURCE_FOLDERS);
List foldersToSkip= new ArrayList(0);
for (int i= 0; i < fResources.length; i++) {
IResource resource= fResources[i];
if (resource instanceof IFolder){
IFolder folder= (IFolder)resource;
if (containsSourceFolder(folder)){
String question= Messages.format(RefactoringCoreMessages.DeleteRefactoring_5, folder.getName());
if (! query.confirm(question))
foldersToSkip.add(folder);
}
}
}
removeFromSetToDelete((IResource[]) foldersToSkip.toArray(new IResource[foldersToSkip.size()]));
}
private static boolean containsSourceFolder(IFolder folder) throws CoreException {
IResource[] subFolders= folder.members();
for (int i = 0; i < subFolders.length; i++) {
if (! (subFolders[i] instanceof IFolder))
continue;
IModelElement element= DLTKCore.create(folder);
if (element instanceof IProjectFragment)
return true;
if (element instanceof IScriptFolder)
continue;
if (containsSourceFolder((IFolder)subFolders[i]))
return true;
}
return false;
}
private void removeElementsWithParentsInSelection() {
ParentChecker parentUtil= new ParentChecker(fResources, fScriptElements);
parentUtil.removeElementsWithAncestorsOnList(false);
fScriptElements= parentUtil.getScriptElements();
fResources= parentUtil.getResources();
}
private void removeScriptElementsChildrenOfScriptElements(){
ParentChecker parentUtil= new ParentChecker(fResources, fScriptElements);
parentUtil.removeElementsWithAncestorsOnList(true);
fScriptElements= parentUtil.getScriptElements();
}
private IFile[] getBuildpathFiles() {
List result= new ArrayList();
for (int i= 0; i < fScriptElements.length; i++) {
IModelElement element= fScriptElements[i];
if (element instanceof IProjectFragment) {
IProject project= element.getScriptProject().getProject();
IFile buildpathFile= project.getFile(".classpath"); //$NON-NLS-1$
if (buildpathFile.exists())
result.add(buildpathFile);
}
}
return (IFile[])result.toArray(new IFile[result.size()]);
}
public Change createChange(IProgressMonitor pm) throws CoreException {
pm.beginTask("", 1); //$NON-NLS-1$
pm.done();
return fDeleteChange;
}
private void addToSetToDelete(IModelElement[] newElements){
fScriptElements= ReorgUtils.union(fScriptElements, newElements);
}
private void removeFromSetToDelete(IResource[] resourcesToNotDelete) {
fResources= ReorgUtils.setMinus(fResources, resourcesToNotDelete);
}
private void removeFromSetToDelete(IModelElement[] elementsToNotDelete) {
fScriptElements= ReorgUtils.setMinus(fScriptElements, elementsToNotDelete);
}
// private static IField[] getFields(IModelElement[] elements){
// List fields= new ArrayList(3);
// for (int i= 0; i < elements.length; i++) {
// if (elements[i] instanceof IField)
// fields.add(elements[i]);
// }
// return (IField[]) fields.toArray(new IField[fields.size()]);
// }
//----------- read-only confirmation business ------
private void confirmDeletingReadOnly() throws CoreException {
if (! ReadOnlyResourceFinder.confirmDeleteOfReadOnlyElements(fScriptElements, fResources, fDeleteQueries))
throw new OperationCanceledException(); //saying 'no' to this one is like cancelling the whole operation
}
//----------- empty source modules related method
private void addEmptySourceModulesToDelete() throws ModelException {
Set modulesToEmpty = getCusToEmpty();
addToSetToDelete((ISourceModule[]) modulesToEmpty
.toArray(new ISourceModule[modulesToEmpty.size()]));
}
private Set getCusToEmpty() throws ModelException {
Set result = new HashSet();
for (int i = 0; i < fScriptElements.length; i++) {
IModelElement element = fScriptElements[i];
ISourceModule module = ReorgUtils.getSourceModule(element);
if (module != null && !result.contains(module)) {
IDLTKLanguageToolkit toolkit = DLTKLanguageManager
.getLanguageToolkit(module);
if (toolkit != null
&& toolkit
.get(DLTKFeatures.DELETE_MODULE_WITHOUT_TOP_LEVEL_TYPES)
&& willHaveAllTopLevelTypesDeleted(module)) {
result.add(module);
}
}
}
return result;
}
private boolean willHaveAllTopLevelTypesDeleted(ISourceModule cu) throws ModelException {
Set elementSet= new HashSet(Arrays.asList(fScriptElements));
IType[] topLevelTypes= cu.getTypes();
for (int i= 0; i < topLevelTypes.length; i++) {
if (! elementSet.contains(topLevelTypes[i]))
return false;
}
return true;
}
public boolean canEnableComment() {
return true;
}
public String getComment() {
return fComment;
}
public void setComment(String comment) {
fComment= comment;
}
}