| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.netbeans.modules.php.spi.phpmodule; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| import javax.swing.event.ChangeListener; |
| import org.netbeans.api.annotations.common.CheckForNull; |
| import org.netbeans.api.annotations.common.NullAllowed; |
| import org.openide.filesystems.FileChangeAdapter; |
| import org.openide.filesystems.FileChangeListener; |
| import org.openide.filesystems.FileEvent; |
| import org.openide.filesystems.FileObject; |
| import org.openide.filesystems.FileRenameEvent; |
| import org.openide.util.ChangeSupport; |
| import org.openide.util.Parameters; |
| import org.openide.util.WeakListeners; |
| |
| /** |
| * Support for {@link ImportantFilesImplementation}. |
| * @since 2.50 |
| */ |
| public final class ImportantFilesSupport { |
| |
| private final FileObject directory; |
| final List<String> fileNames; |
| final FileChangeListener fileChangeListener = new FilesListener(); |
| private final ChangeSupport changeSupport = new ChangeSupport(this); |
| |
| |
| private ImportantFilesSupport(FileObject directory, String... fileNames) { |
| assert directory != null; |
| assert fileNames != null; |
| this.directory = directory; |
| this.fileNames = new CopyOnWriteArrayList<>(fileNames); |
| } |
| |
| /** |
| * Creates new support for the given directory and file name(s). |
| * @param directory directory |
| * @param fileNames file name(s) |
| * @return new support |
| */ |
| public static ImportantFilesSupport create(FileObject directory, String... fileNames) { |
| Parameters.notNull("directory", directory); // NOI18N |
| Parameters.notNull("fileNames", fileNames); // NOI18N |
| ImportantFilesSupport support = new ImportantFilesSupport(directory, fileNames); |
| directory.addFileChangeListener(WeakListeners.create(FileChangeListener.class, support.fileChangeListener, directory)); |
| return support; |
| } |
| |
| /** |
| * Gets information about all important files. |
| * @param fileInfoCreator custom {@link FileInfoCreator}, can be {@code null} |
| * (in such case, {@link ImportantFilesImplementation.FileInfo#FileInfo(FileObject)} is used) |
| * @return information about all important files; can be empty but never {@code null} |
| */ |
| public Collection<ImportantFilesImplementation.FileInfo> getFiles(@NullAllowed FileInfoCreator fileInfoCreator) { |
| List<ImportantFilesImplementation.FileInfo> files = new ArrayList<>(); |
| for (String name : fileNames) { |
| FileObject fo = directory.getFileObject(name); |
| if (fo != null) { |
| ImportantFilesImplementation.FileInfo info = null; |
| if (fileInfoCreator != null) { |
| info = fileInfoCreator.create(fo); |
| } |
| if (info == null) { |
| info = new ImportantFilesImplementation.FileInfo(fo); |
| } |
| files.add(info); |
| } |
| } |
| if (files.isEmpty()) { |
| return Collections.emptyList(); |
| } |
| return files; |
| } |
| |
| /** |
| * Adds listener to be notified when important files change. |
| * @param listener listener to be notified when important files change |
| */ |
| public void addChangeListener(ChangeListener listener) { |
| changeSupport.addChangeListener(listener); |
| } |
| |
| /** |
| * Removes listener. |
| * @param listener listener |
| */ |
| public void removeChangeListener(ChangeListener listener) { |
| changeSupport.removeChangeListener(listener); |
| } |
| |
| void fireChange() { |
| changeSupport.fireChange(); |
| } |
| |
| //~ Inner classes |
| |
| /** |
| * {@link ImportantFilesImplementation.FileInfo} creator for the given {@link FileObject}. |
| */ |
| public interface FileInfoCreator { |
| |
| /** |
| * Creates {@link ImportantFilesImplementation.FileInfo} for the given {@link FileObject}. |
| * @param fileObject FileObject to be used |
| * @return {@link ImportantFilesImplementation.FileInfo} for the given {@link FileObject}, can be {@null} |
| */ |
| @CheckForNull |
| ImportantFilesImplementation.FileInfo create(FileObject fileObject); |
| |
| } |
| |
| private final class FilesListener extends FileChangeAdapter { |
| |
| @Override |
| public void fileRenamed(FileRenameEvent fe) { |
| check(fe.getFile().getNameExt()); |
| check(fe.getName() + "." + fe.getExt()); // NOI18N |
| } |
| |
| @Override |
| public void fileDeleted(FileEvent fe) { |
| check(fe.getFile().getNameExt()); |
| } |
| |
| @Override |
| public void fileDataCreated(FileEvent fe) { |
| check(fe.getFile().getNameExt()); |
| } |
| |
| private void check(String filename) { |
| if (fileNames.contains(filename)) { |
| fireChange(); |
| } |
| } |
| |
| } |
| |
| } |