| /* |
| * 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.api.java.source.ui; |
| |
| import java.awt.Dialog; |
| import java.awt.event.ActionEvent; |
| import java.awt.event.ActionListener; |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.concurrent.Future; |
| import javax.swing.JLabel; |
| import javax.swing.SwingConstants; |
| import javax.swing.SwingUtilities; |
| import javax.swing.border.EmptyBorder; |
| import org.netbeans.api.java.platform.JavaPlatform; |
| import org.netbeans.api.java.source.ClasspathInfo; |
| import org.netbeans.api.java.source.JavaSource; |
| import org.netbeans.api.java.source.SourceUtils; |
| import org.netbeans.spi.java.classpath.support.ClassPathSupport; |
| import org.openide.DialogDescriptor; |
| import org.openide.DialogDisplayer; |
| import org.openide.util.Exceptions; |
| import org.openide.util.NbBundle; |
| |
| /** |
| * Support for notifying user about the background scan. |
| * @since 1.2 |
| * @author Tomas Zezula |
| */ |
| public class ScanDialog { |
| |
| private ScanDialog () {} |
| |
| /** |
| * This is a helper method to provide support for delaying invocations of actions |
| * depending on java model. |
| * <br>Behavior of this method is following:<br> |
| * If classpath scanning is not in progress, runnable's run() is called. <br> |
| * If classpath scanning is in progress, modal cancellable notification dialog with specified |
| * tile is opened. |
| * </ul> |
| * As soon as classpath scanning finishes, this dialog is closed and runnable's run() is called. |
| * This method must be called in AWT EventQueue. Runnable is performed in AWT thread. |
| * |
| * @param runnable Runnable instance which will be called. |
| * @param actionName Title of wait dialog. |
| * @return true action was cancelled <br> |
| * false action was performed |
| * |
| * @see org.netbeans.api.java.source.JavaSource#runWhenScanFinished which provides delayed invocation |
| * of action without UI notification. |
| */ |
| public static boolean runWhenScanFinished (final Runnable runnable, final String actionName) { |
| assert runnable != null; |
| assert actionName != null; |
| assert SwingUtilities.isEventDispatchThread(); |
| if (SourceUtils.isScanInProgress()) { |
| |
| class AL implements ActionListener { |
| |
| private Dialog dialog; |
| private Future<Void> monitor; |
| |
| public synchronized void start (final Future<Void> monitor) { |
| assert monitor != null; |
| this.monitor = monitor; |
| if (dialog != null) { |
| dialog.setVisible(true); |
| } |
| } |
| |
| public void actionPerformed(ActionEvent e) { |
| monitor.cancel(false); |
| close (); |
| } |
| |
| synchronized void close () { |
| if (dialog != null) { |
| dialog.setVisible(false); |
| dialog.dispose(); |
| dialog = null; |
| } |
| } |
| }; |
| final AL listener = new AL (); |
| JLabel label = new JLabel(NbBundle.getMessage(ScanDialog.class,"MSG_WaitScan"), |
| javax.swing.UIManager.getIcon("OptionPane.informationIcon"), SwingConstants.LEFT); |
| label.setBorder(new EmptyBorder(12,12,11,11)); |
| DialogDescriptor dd = new DialogDescriptor(label, actionName, true, new Object[]{NbBundle.getMessage(ScanDialog.class,"LBL_CancelAction",actionName)}, null, 0, null, listener); |
| listener.dialog = DialogDisplayer.getDefault().createDialog(dd); |
| listener.dialog.pack(); |
| final ClasspathInfo info = ClasspathInfo.create(JavaPlatform.getDefault().getBootstrapLibraries(), |
| ClassPathSupport.createClassPath(new URL[0]), |
| ClassPathSupport.createClassPath(new URL[0])); |
| final JavaSource js = JavaSource.create(info); |
| try { |
| final Future<Void> monitor = js.runWhenScanFinished((cc) -> { |
| final Runnable r = () -> { |
| listener.close(); |
| runnable.run(); |
| }; |
| if (SwingUtilities.isEventDispatchThread()) { |
| r.run(); |
| } else { |
| SwingUtilities.invokeLater(r); |
| } |
| }, true); |
| if (!monitor.isDone()) { |
| listener.start(monitor); |
| } |
| return monitor.isCancelled(); |
| }catch (IOException e) { |
| Exceptions.printStackTrace(e); |
| return true; |
| } |
| } else { |
| runnable.run(); |
| return false; |
| } |
| } |
| |
| } |