| /* |
| * 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.search; |
| |
| import java.awt.EventQueue; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.netbeans.api.progress.ProgressHandle; |
| import org.netbeans.api.progress.ProgressHandleFactory; |
| import org.netbeans.modules.search.MatchingObject.InvalidityStatus; |
| import org.netbeans.modules.search.ui.BasicReplaceResultsPanel; |
| import org.openide.filesystems.FileAlreadyLockedException; |
| import org.openide.filesystems.FileLock; |
| import org.openide.filesystems.FileUtil; |
| import org.openide.util.NbBundle; |
| import org.openide.util.UserQuestionException; |
| |
| /** |
| * Task that checks validity of found files and then |
| * (if everything is valid) replaces the matching substrings |
| * with the replacement string/pattern. |
| * |
| * @author Tim Boudreau |
| * @author Marian Petras |
| */ |
| public final class ReplaceTask implements Runnable { |
| |
| /** |
| * maximum number of errors detected before replacing |
| * and displayed to the user |
| */ |
| private static final int MAX_ERRORS_CHECKED = 20; |
| |
| private final List<MatchingObject> matchingObjects; |
| private final ProgressHandle progressHandle; |
| private final List<String> problems; |
| private final BasicReplaceResultsPanel panel; |
| |
| /** */ |
| private ResultStatus resultStatus = null; |
| |
| enum ResultStatus { |
| SUCCESS, |
| PRE_CHECK_FAILED, |
| PROBLEMS_ENCOUNTERED |
| } |
| |
| /** |
| */ |
| public ReplaceTask(List<MatchingObject> matchingObjects, |
| BasicReplaceResultsPanel panel) { |
| this.matchingObjects = matchingObjects; |
| this.panel = panel; |
| |
| problems = new ArrayList<String>(4); |
| progressHandle = ProgressHandleFactory.createHandle( |
| NbBundle.getMessage(getClass(), "LBL_Replacing")); //NOI18N |
| } |
| |
| /** |
| */ |
| public void run() { |
| assert !EventQueue.isDispatchThread(); |
| |
| progressHandle.start(matchingObjects.size() * 2); |
| try { |
| replace(); |
| assert resultStatus != null; |
| } finally { |
| progressHandle.finish(); |
| } |
| } |
| |
| /** |
| */ |
| private void replace() { |
| assert !EventQueue.isDispatchThread(); |
| |
| checkForErrors(); |
| if (resultStatus == null) { //the check passed |
| FileUtil.runAtomicAction(new Runnable() { |
| public void run() { |
| doReplace(); |
| } |
| }); |
| } |
| } |
| |
| /** |
| */ |
| private void checkForErrors() { |
| assert !EventQueue.isDispatchThread(); |
| |
| int errorsCount = 0; |
| |
| for(MatchingObject mo: matchingObjects) { |
| InvalidityStatus status = mo.checkValidity(); |
| if (status != null) { |
| problems.add(status.getDescription(mo.getFileObject().getPath())); |
| if (++errorsCount > MAX_ERRORS_CHECKED) { |
| break; |
| } |
| } |
| } |
| if (!problems.isEmpty()) { |
| resultStatus = ResultStatus.PRE_CHECK_FAILED; |
| } |
| } |
| |
| /** |
| * |
| * @return list of strings describing problems that happened during |
| * the replace, or {@code null} if no problem happened |
| */ |
| private void doReplace() { |
| assert !EventQueue.isDispatchThread(); |
| |
| int i = 0; |
| int moSize = matchingObjects.size(); |
| for(final MatchingObject obj: matchingObjects) { |
| int workunit = moSize + i++; |
| progressHandle.progress(obj.getName(), workunit); |
| if (!obj.isSelected() || !obj.isValid()) { |
| continue; |
| } |
| |
| String invDescription = obj.getInvalidityDescription(); |
| if (invDescription != null) { |
| problems.add(invDescription); |
| continue; |
| } |
| |
| String errMessage = null; |
| FileLock fileLock = null; |
| try { |
| fileLock = obj.lock(); |
| MatchingObject.InvalidityStatus status = obj.replace(); |
| if (status == null) { |
| obj.write(fileLock); |
| } else { |
| errMessage = status.getDescription(obj.getFileObject().getPath()); |
| } |
| } catch (FileAlreadyLockedException ex) { |
| errMessage = createMsgFileLocked(obj); |
| } catch (UserQuestionException ex) { |
| errMessage = createMsgFileLocked(obj); |
| } catch (IOException ex) { |
| ex.printStackTrace(); //PENDING - ex.printStackTrace()? |
| errMessage = ex.getLocalizedMessage(); |
| if (errMessage == null) { |
| errMessage = ex.getMessage(); |
| } |
| } finally { |
| if (fileLock != null) { |
| fileLock.releaseLock(); |
| } |
| } |
| if (errMessage != null) { |
| problems.add(errMessage); |
| } |
| } |
| resultStatus = problems.isEmpty() ? ResultStatus.SUCCESS |
| : ResultStatus.PROBLEMS_ENCOUNTERED; |
| } |
| |
| private static String createMsgFileLocked(MatchingObject matchingObj) { |
| return NbBundle.getMessage( |
| ReplaceTask.class, |
| "MSG_cannot_access_file_already_locked", //NOI18N |
| matchingObj.getName()); |
| } |
| |
| /** |
| * |
| * @see #getProblems() |
| */ |
| ResultStatus getResultStatus() { |
| return resultStatus; |
| } |
| |
| /** |
| * Returns a list of problems encountered during the pre-check or |
| * during replacing. The type of problems (pre-check or replacing) |
| * can be determined from the results status returned by method |
| * {@link #getResultStatus()}. |
| * |
| * @return array of problems, or {@code null} if no problems have been |
| * encountered |
| * @see #getResultStatus() |
| */ |
| String[] getProblems() { |
| return problems.isEmpty() |
| ? null |
| : problems.toArray(new String[problems.size()]); |
| } |
| |
| BasicReplaceResultsPanel getPanel() { |
| return panel; |
| } |
| } |