<code-name-base>org.netbeans.modules.autoupdate.services</code-name-base>

                    <build-prerequisite/>

                    <compile-dependency/>

                    <run-dependency>

                        <specification-version>1.29</specification-version>

                    </run-dependency>

                </dependency>

                <dependency>

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2011 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2011 Sun Microsystems, Inc.

 */

package org.netbeans.modules.analysis;

import java.awt.event.ActionEvent;

import org.netbeans.api.autoupdate.OperationSupport;

import org.netbeans.api.autoupdate.OperationSupport.Restarter;

import org.netbeans.api.options.OptionsDisplayer;

import javax.swing.JButton;

import javax.swing.JTextArea;

import javax.swing.JPanel;

import java.util.logging.Level;

import java.util.logging.Logger;

import java.awt.Dialog;

import java.awt.event.ActionListener;

import javax.swing.JComponent;

import javax.swing.JLabel;

import org.openide.DialogDisplayer;

import java.io.IOException;

import java.util.List;

import javax.swing.JScrollPane;

import org.netbeans.api.autoupdate.InstallSupport;

import org.netbeans.api.autoupdate.OperationContainer;

import org.netbeans.api.autoupdate.UpdateElement;

import org.netbeans.api.autoupdate.UpdateManager;

import org.netbeans.api.autoupdate.UpdateUnit;

import org.netbeans.api.autoupdate.UpdateUnitProvider;

import org.netbeans.api.autoupdate.UpdateUnitProviderFactory;

import org.netbeans.api.progress.ProgressHandle;

import org.netbeans.api.progress.ProgressHandleFactory;

import org.netbeans.modules.autoupdate.ui.api.PluginManager;

import org.openide.DialogDescriptor;

import org.openide.NotifyDescriptor;

import org.openide.awt.Mnemonics;

import org.openide.util.NbBundle.Messages;

import org.openide.util.RequestProcessor;

import static org.netbeans.modules.analysis.Bundle.*;

/**

 * Copied and adjusted from the JUnitLibraryDownloader

 */

public class ModuleInstallerSupport  {

    private static RequestProcessor RP = new RequestProcessor(ModuleInstallerSupport.class.getName(), 1);

    private static final Logger LOG = Logger.getLogger(ModuleInstallerSupport.class.getName());

    @Messages({

        "searching_handle=Searching for \"{0}\" library on NetBeans plugin portal...",

        "resolve_title=Resolve \"{0}\" Reference Problem",

        "networkproblem_header=Unable to connect  to the NetBeans plugin portal",

        "networkproblem_message=Check your proxy settings or try again later. "

            + "The server may be unavailable at the moment. "

            + "You may also want to make sure that your firewall is not blocking network traffic.",

        "proxy_button=&Proxy Settings...",

        "tryagain_button=Try &Again",

        "nodownload_header=\"{0}\" module has not been downloaded",

        "nodownload_message=You can try to download \"{0}\" module again",

        "active_handle=Activating {0}"

    })

    private JButton tryAgain;

    private JButton proxySettings;

    @SuppressWarnings("SleepWhileInLoop")

    public boolean download(String cnb, final String displayName) throws Exception {

        UpdateUnit unit = findModule(cnb);

        if (unit == null) {

            final ProgressHandle handle = ProgressHandleFactory.createHandle(searching_handle(displayName));

            initButtons();

            final DialogDescriptor searching = new DialogDescriptor(searchingPanel(new JLabel(searching_handle(displayName)),

                    ProgressHandleFactory.createProgressComponent(handle)), resolve_title(displayName), true, null);

            handle.setInitialDelay (0);

            handle.start ();

            searching.setOptions(new Object[] {NotifyDescriptor.CANCEL_OPTION});

            searching.setMessageType(NotifyDescriptor.PLAIN_MESSAGE);

            final Dialog dlg = DialogDisplayer.getDefault().createDialog(searching);

            RP.post(new Runnable() {

                @Override

                public void run() {

                    // May be first start, when no update lists have yet been downloaded.

                    try {

                        for (UpdateUnitProvider p : UpdateUnitProviderFactory.getDefault().getUpdateUnitProviders(true)) {

                            p.refresh(handle, true);

                        }

                        // close searching

                        dlg.dispose();

                    } catch (IOException ex) {

                        LOG.log(Level.FINE, ex.getMessage(), ex);

                        if (! dlg.isVisible()) {

                            LOG.fine("dialog not visible => do nothing");

                            return ;

                        }

                        DialogDescriptor networkProblem = new DialogDescriptor(

                                problemPanel(resolve_title(displayName), networkproblem_message()), // message

                                networkproblem_header(), // title

                                true, // modal

                                null);

                        networkProblem.setOptions(new Object[] {tryAgain, proxySettings, NotifyDescriptor.CANCEL_OPTION});

                        networkProblem.setClosingOptions(new Object[] {tryAgain, NotifyDescriptor.CANCEL_OPTION});

                        networkProblem.setMessageType(NotifyDescriptor.WARNING_MESSAGE);

                        Dialog networkProblemDialog = DialogDisplayer.getDefault().createDialog(networkProblem);

                        networkProblemDialog.setVisible(true);

                        Object answer = networkProblem.getValue();

                        if (NotifyDescriptor.CANCEL_OPTION.equals(answer) || answer.equals(-1) /* escape */ ) {

                            LOG.fine("cancel network problem dialog");

                            searching.setValue(answer);

                            dlg.dispose();

                        } else if (tryAgain.equals(answer)) {

                            LOG.fine("try again searching");

                            RP.post(this);

                            assert false : "Unknown " + answer;

                        }

                    }

                }

            });

            dlg.setVisible(true);

            handle.finish();

            if (NotifyDescriptor.CANCEL_OPTION.equals(searching.getValue()) || searching.getValue().equals(-1) /* escape */) {

                LOG.log(Level.FINE, "user canceled searching for {0}", cnb);

                return showNoDownloadDialog(cnb, displayName);

            }

            unit = findModule(cnb);

            if (unit == null) {

                LOG.log(Level.FINE, "could not find {0} on any update site", cnb);

                return showNoDownloadDialog(cnb, displayName);

            }

        }

        // check if module installed

        if (unit.getInstalled() != null) {

            LOG.fine(unit.getInstalled() + " already installed. Is active? " + unit.getInstalled().isEnabled());

            if (unit.getInstalled().isEnabled()) {

                throw new Exception(unit.getInstalled() + " already installed and active");

            } else {

                // activate it

                OperationContainer<OperationSupport> oc = OperationContainer.createForEnable();

                if (!oc.canBeAdded(unit, unit.getInstalled())) {

                    throw new Exception("could not add " + unit.getInstalled() + " for activation");

                }

                for (UpdateElement req : oc.add(unit.getInstalled()).getRequiredElements()) {

                    oc.add(req);

                }

                ProgressHandle activeHandle = ProgressHandleFactory.createHandle (active_handle(displayName));

                Restarter restarter = oc.getSupport().doOperation(activeHandle);

                assert restarter == null : "No Restater need to make " + unit.getInstalled() + " active";

                // XXX new library & build.properties apparently do not show up immediately... how to listen properly?

                return true;

            }

        }

        List<UpdateElement> updates = unit.getAvailableUpdates();

        if (updates.isEmpty()) {

            throw new Exception("no updates for " + unit);

        }

        OperationContainer<InstallSupport> oc = OperationContainer.createForInstall();

        UpdateElement element = updates.get(0);

        if (!oc.canBeAdded(unit, element)) {

            throw new Exception("could not add " + element + " to updates");

        }

        for (UpdateElement req : oc.add(element).getRequiredElements()) {

            oc.add(req);

        }

        if (!PluginManager.openInstallWizard(oc)) {

            LOG.fine("user canceled PM");

            return showNoDownloadDialog(cnb, displayName);

        }

        return true;

    }

    private UpdateUnit findModule(String cnb) throws IOException {

        for (UpdateUnit unit : UpdateManager.getDefault().getUpdateUnits(UpdateManager.TYPE.MODULE)) {

            if (unit.getCodeName().equals(cnb)) {

                return unit;

            }

        }

        return null;

    }

    private void initButtons() {

        if (tryAgain != null) {

            return ;

        }

        tryAgain = new JButton();

        proxySettings = new JButton();

        Mnemonics.setLocalizedText(tryAgain, tryagain_button());

        Mnemonics.setLocalizedText(proxySettings, proxy_button());

        proxySettings.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                LOG.fine("show proxy options");

                OptionsDisplayer.getDefault().open("General"); // NOI18N

            }

        });

    }

    private boolean showNoDownloadDialog(String cnb, String displayName) throws Exception {

        DialogDescriptor networkProblem = new DialogDescriptor(

                problemPanel(nodownload_header(displayName), nodownload_message(displayName)), // message

                resolve_title(displayName), // title

                true, // modal

                null);

        initButtons();

        networkProblem.setOptions(new Object[] {tryAgain, NotifyDescriptor.CANCEL_OPTION});

        networkProblem.setClosingOptions(new Object[] {tryAgain, NotifyDescriptor.CANCEL_OPTION});

        networkProblem.setMessageType(NotifyDescriptor.WARNING_MESSAGE);

        Dialog networkProblemDialog = DialogDisplayer.getDefault().createDialog(networkProblem);

        networkProblemDialog.setVisible(true);

        Object answer = networkProblem.getValue();

        if (NotifyDescriptor.CANCEL_OPTION.equals(answer) || answer.equals(-1) /* escape */ ) {

            LOG.fine("cancel no download dialog");

            //throw new InterruptedException("user canceled download & install JUnit");

            return false;

        } else if (tryAgain.equals(answer)) {

            LOG.fine("try again download()");

            return download(cnb, displayName);

        } else {

            assert false : "Unknown " + answer;

        }

        assert false : "Unknown " + answer;

        return false;

    }

    private static JPanel searchingPanel(JLabel progressLabel, JComponent progressComponent) {

        JPanel panel = new JPanel();

        progressLabel.setLabelFor(progressComponent);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(panel);

        panel.setLayout(layout);

        layout.setHorizontalGroup(

            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(layout.createSequentialGroup()

                .addContainerGap()

                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)

                    .addComponent(progressLabel, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)

                    .addComponent(progressComponent, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 399, Short.MAX_VALUE))

                .addContainerGap())

        );

        layout.setVerticalGroup(

            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(layout.createSequentialGroup()

                .addGap(96, 96, 96)

                .addComponent(progressLabel)

                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)

                .addComponent(progressComponent, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)

                .addContainerGap(109, Short.MAX_VALUE))

        );

        return panel;

    }

    private static JPanel problemPanel(String header, String message) {

        JPanel panel = new JPanel();

        JLabel jLabel1 = new javax.swing.JLabel();

        JScrollPane jScrollPane1 = new javax.swing.JScrollPane();

        JTextArea jTextArea1 = new javax.swing.JTextArea();

        jLabel1.setFont(jLabel1.getFont().deriveFont(jLabel1.getFont().getStyle() | java.awt.Font.BOLD));

        jLabel1.setText(header);

        jTextArea1.setColumns(20);

        jTextArea1.setEditable(false);

        jTextArea1.setLineWrap(true);

        jTextArea1.setWrapStyleWord(true);

        jTextArea1.setRows(5);

        jTextArea1.setText(message);

        jTextArea1.setOpaque(false);

        jScrollPane1.setViewportView(jTextArea1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(panel);

        panel.setLayout(layout);

        layout.setHorizontalGroup(

            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(layout.createSequentialGroup()

                .addContainerGap()

                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

                    .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 478, Short.MAX_VALUE)

                    .addGroup(layout.createSequentialGroup()

                        .addComponent(jLabel1)

                        .addGap(107, 107, 107)))

                .addContainerGap())

        );

        layout.setVerticalGroup(

            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(layout.createSequentialGroup()

                .addContainerGap()

                .addComponent(jLabel1)

                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)

                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 133, Short.MAX_VALUE)

                .addGap(82, 82, 82))

        );

        return panel;

    }

}

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2011 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2011 Sun Microsystems, Inc.

 */

package org.netbeans.modules.findbugs.installer;

import java.awt.event.ActionEvent;

import org.netbeans.api.autoupdate.OperationSupport;

import org.netbeans.api.autoupdate.OperationSupport.Restarter;

import org.netbeans.api.options.OptionsDisplayer;

import javax.swing.JButton;

import javax.swing.JTextArea;

import javax.swing.JPanel;

import java.util.logging.Level;

import java.util.logging.Logger;

import java.awt.Dialog;

import java.awt.event.ActionListener;

import javax.swing.JComponent;

import javax.swing.JLabel;

import org.openide.DialogDisplayer;

import java.io.IOException;

import java.util.List;

import javax.swing.JScrollPane;

import org.netbeans.api.autoupdate.InstallSupport;

import org.netbeans.api.autoupdate.OperationContainer;

import org.netbeans.api.autoupdate.UpdateElement;

import org.netbeans.api.autoupdate.UpdateManager;

import org.netbeans.api.autoupdate.UpdateUnit;

import org.netbeans.api.autoupdate.UpdateUnitProvider;

import org.netbeans.api.autoupdate.UpdateUnitProviderFactory;

import org.netbeans.api.progress.ProgressHandle;

import org.netbeans.api.progress.ProgressHandleFactory;

import org.netbeans.modules.autoupdate.ui.api.PluginManager;

import org.openide.DialogDescriptor;

import org.openide.NotifyDescriptor;

import org.openide.awt.Mnemonics;

import org.openide.util.NbBundle.Messages;

import org.openide.util.RequestProcessor;

import static org.netbeans.modules.findbugs.installer.Bundle.*;

/**

 * Copied and adjusted from the JUnitLibraryDownloader

 */

public class ModuleInstallerSupport  {

    private static RequestProcessor RP = new RequestProcessor(ModuleInstallerSupport.class.getName(), 1);

    private static final Logger LOG = Logger.getLogger(ModuleInstallerSupport.class.getName());

    @Messages({

        "searching_handle=Searching for \"{0}\" library on NetBeans plugin portal...",

        "resolve_title=Resolve \"{0}\" Reference Problem",

        "networkproblem_header=Unable to connect  to the NetBeans plugin portal",

        "networkproblem_message=Check your proxy settings or try again later. "

            + "The server may be unavailable at the moment. "

            + "You may also want to make sure that your firewall is not blocking network traffic.",

        "proxy_button=&Proxy Settings...",

        "tryagain_button=Try &Again",

        "nodownload_header=\"{0}\" module has not been downloaded",

        "nodownload_message=You can try to download \"{0}\" module again",

        "active_handle=Activating {0}"

    })

    private JButton tryAgain;

    private JButton proxySettings;

    @SuppressWarnings("SleepWhileInLoop")

    public boolean download(String cnb, final String displayName) throws Exception {

        UpdateUnit unit = findModule(cnb);

        if (unit == null) {

            final ProgressHandle handle = ProgressHandleFactory.createHandle(searching_handle(displayName));

            initButtons();

            final DialogDescriptor searching = new DialogDescriptor(searchingPanel(new JLabel(searching_handle(displayName)),

                    ProgressHandleFactory.createProgressComponent(handle)), resolve_title(displayName), true, null);

            handle.setInitialDelay (0);

            handle.start ();

            searching.setOptions(new Object[] {NotifyDescriptor.CANCEL_OPTION});

            searching.setMessageType(NotifyDescriptor.PLAIN_MESSAGE);

            final Dialog dlg = DialogDisplayer.getDefault().createDialog(searching);

            RP.post(new Runnable() {

                @Override

                public void run() {

                    // May be first start, when no update lists have yet been downloaded.

                    try {

                        for (UpdateUnitProvider p : UpdateUnitProviderFactory.getDefault().getUpdateUnitProviders(true)) {

                            p.refresh(handle, true);

                        }

                        // close searching

                        dlg.dispose();

                    } catch (IOException ex) {

                        LOG.log(Level.FINE, ex.getMessage(), ex);

                        if (! dlg.isVisible()) {

                            LOG.fine("dialog not visible => do nothing");

                            return ;

                        }

                        DialogDescriptor networkProblem = new DialogDescriptor(

                                problemPanel(resolve_title(displayName), networkproblem_message()), // message

                                networkproblem_header(), // title

                                true, // modal

                                null);

                        networkProblem.setOptions(new Object[] {tryAgain, proxySettings, NotifyDescriptor.CANCEL_OPTION});

                        networkProblem.setClosingOptions(new Object[] {tryAgain, NotifyDescriptor.CANCEL_OPTION});

                        networkProblem.setMessageType(NotifyDescriptor.WARNING_MESSAGE);

                        Dialog networkProblemDialog = DialogDisplayer.getDefault().createDialog(networkProblem);

                        networkProblemDialog.setVisible(true);

                        Object answer = networkProblem.getValue();

                        if (NotifyDescriptor.CANCEL_OPTION.equals(answer) || answer.equals(-1) /* escape */ ) {

                            LOG.fine("cancel network problem dialog");

                            searching.setValue(answer);

                            dlg.dispose();

                        } else if (tryAgain.equals(answer)) {

                            LOG.fine("try again searching");

                            RP.post(this);

                        } else {

                            assert false : "Unknown " + answer;

                        }

                    }

                }

            });

            dlg.setVisible(true);

            handle.finish();

            if (NotifyDescriptor.CANCEL_OPTION.equals(searching.getValue()) || searching.getValue().equals(-1) /* escape */) {

                LOG.log(Level.FINE, "user canceled searching for {0}", cnb);

                return showNoDownloadDialog(cnb, displayName);

            }

            unit = findModule(cnb);

            if (unit == null) {

                LOG.log(Level.FINE, "could not find {0} on any update site", cnb);

                return showNoDownloadDialog(cnb, displayName);

            }

        }

        // check if module installed

        if (unit.getInstalled() != null) {

            LOG.fine(unit.getInstalled() + " already installed. Is active? " + unit.getInstalled().isEnabled());

            if (unit.getInstalled().isEnabled()) {

                throw new Exception(unit.getInstalled() + " already installed and active");

            } else {

                // activate it

                OperationContainer<OperationSupport> oc = OperationContainer.createForEnable();

                if (!oc.canBeAdded(unit, unit.getInstalled())) {

                    throw new Exception("could not add " + unit.getInstalled() + " for activation");

                }

                for (UpdateElement req : oc.add(unit.getInstalled()).getRequiredElements()) {

                    oc.add(req);

                }

                ProgressHandle activeHandle = ProgressHandleFactory.createHandle (active_handle(displayName));

                Restarter restarter = oc.getSupport().doOperation(activeHandle);

                assert restarter == null : "No Restater need to make " + unit.getInstalled() + " active";

                // XXX new library & build.properties apparently do not show up immediately... how to listen properly?

                return true;

            }

        }

        List<UpdateElement> updates = unit.getAvailableUpdates();

        if (updates.isEmpty()) {

            throw new Exception("no updates for " + unit);

        }

        OperationContainer<InstallSupport> oc = OperationContainer.createForInstall();

        UpdateElement element = updates.get(0);

        if (!oc.canBeAdded(unit, element)) {

            throw new Exception("could not add " + element + " to updates");

        }

        for (UpdateElement req : oc.add(element).getRequiredElements()) {

            oc.add(req);

        }

        if (!PluginManager.openInstallWizard(oc)) {

            LOG.fine("user canceled PM");

            return showNoDownloadDialog(cnb, displayName);

        }

        return true;

    }

    private UpdateUnit findModule(String cnb) throws IOException {

        for (UpdateUnit unit : UpdateManager.getDefault().getUpdateUnits(UpdateManager.TYPE.MODULE)) {

            if (unit.getCodeName().equals(cnb)) {

                return unit;

            }

        }

        return null;

    }

    private void initButtons() {

        if (tryAgain != null) {

            return ;

        }

        tryAgain = new JButton();

        proxySettings = new JButton();

        Mnemonics.setLocalizedText(tryAgain, tryagain_button());

        Mnemonics.setLocalizedText(proxySettings, proxy_button());

        proxySettings.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                LOG.fine("show proxy options");

                OptionsDisplayer.getDefault().open("General"); // NOI18N

            }

        });

    }

    private boolean showNoDownloadDialog(String cnb, String displayName) throws Exception {

        DialogDescriptor networkProblem = new DialogDescriptor(

                problemPanel(nodownload_header(displayName), nodownload_message(displayName)), // message

                resolve_title(displayName), // title

                true, // modal

                null);

        initButtons();

        networkProblem.setOptions(new Object[] {tryAgain, NotifyDescriptor.CANCEL_OPTION});

        networkProblem.setClosingOptions(new Object[] {tryAgain, NotifyDescriptor.CANCEL_OPTION});

        networkProblem.setMessageType(NotifyDescriptor.WARNING_MESSAGE);

        Dialog networkProblemDialog = DialogDisplayer.getDefault().createDialog(networkProblem);

        networkProblemDialog.setVisible(true);

        Object answer = networkProblem.getValue();

        if (NotifyDescriptor.CANCEL_OPTION.equals(answer) || answer.equals(-1) /* escape */ ) {

            LOG.fine("cancel no download dialog");

            //throw new InterruptedException("user canceled download & install JUnit");

            return false;

        } else if (tryAgain.equals(answer)) {

            LOG.fine("try again download()");

            return download(cnb, displayName);

        } else {

            assert false : "Unknown " + answer;

        }

        assert false : "Unknown " + answer;

        return false;

    }

    private static JPanel searchingPanel(JLabel progressLabel, JComponent progressComponent) {

        JPanel panel = new JPanel();

        progressLabel.setLabelFor(progressComponent);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(panel);

        panel.setLayout(layout);

        layout.setHorizontalGroup(

            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(layout.createSequentialGroup()

                .addContainerGap()

                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)

                    .addComponent(progressLabel, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)

                    .addComponent(progressComponent, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 399, Short.MAX_VALUE))

                .addContainerGap())

        );

        layout.setVerticalGroup(

            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(layout.createSequentialGroup()

                .addGap(96, 96, 96)

                .addComponent(progressLabel)

                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)

                .addComponent(progressComponent, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)

                .addContainerGap(109, Short.MAX_VALUE))

        );

        return panel;

    }

    private static JPanel problemPanel(String header, String message) {

        JPanel panel = new JPanel();

        JLabel jLabel1 = new javax.swing.JLabel();

        JScrollPane jScrollPane1 = new javax.swing.JScrollPane();

        JTextArea jTextArea1 = new javax.swing.JTextArea();

        jLabel1.setFont(jLabel1.getFont().deriveFont(jLabel1.getFont().getStyle() | java.awt.Font.BOLD));

        jLabel1.setText(header);

        jTextArea1.setColumns(20);

        jTextArea1.setEditable(false);

        jTextArea1.setLineWrap(true);

        jTextArea1.setWrapStyleWord(true);

        jTextArea1.setRows(5);

        jTextArea1.setText(message);

        jTextArea1.setOpaque(false);

        jScrollPane1.setViewportView(jTextArea1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(panel);

        panel.setLayout(layout);

        layout.setHorizontalGroup(

            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(layout.createSequentialGroup()

                .addContainerGap()

                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

                    .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 478, Short.MAX_VALUE)

                    .addGroup(layout.createSequentialGroup()

                        .addComponent(jLabel1)

                        .addGap(107, 107, 107)))

                .addContainerGap())

        );

        layout.setVerticalGroup(

            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(layout.createSequentialGroup()

                .addContainerGap()

                .addComponent(jLabel1)

                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)

                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 133, Short.MAX_VALUE)

                .addGap(82, 82, 82))

        );

        return panel;

    }

}

import java.awt.event.ActionEvent;

import org.netbeans.api.autoupdate.OperationSupport;

import org.netbeans.api.autoupdate.OperationSupport.Restarter;

import org.netbeans.api.options.OptionsDisplayer;

import javax.swing.JTextArea;

import javax.swing.JPanel;

import java.util.logging.Level;

import java.awt.Dialog;

import java.awt.event.ActionListener;

import javax.swing.JComponent;

import javax.swing.JLabel;

import org.openide.DialogDisplayer;

import java.io.IOException;

import java.util.List;

import javax.swing.JScrollPane;

import org.netbeans.api.autoupdate.InstallSupport;

import org.netbeans.api.autoupdate.OperationContainer;

import org.netbeans.api.autoupdate.UpdateElement;

import org.netbeans.api.autoupdate.UpdateManager;

import org.netbeans.api.autoupdate.UpdateUnit;

import org.netbeans.api.autoupdate.UpdateUnitProvider;

import org.netbeans.api.autoupdate.UpdateUnitProviderFactory;

import org.netbeans.api.progress.ProgressHandle;

import org.netbeans.api.progress.ProgressHandleFactory;

import org.openide.DialogDescriptor;

import org.openide.NotifyDescriptor;

import org.openide.util.RequestProcessor;

        "searching_handle=Searching for \"junit\" library on NetBeans plugin portal...",

        "resolve_title=Resolve \"junit\" Reference Problem",

        "networkproblem_header=Unable to connect  to the NetBeans plugin portal",

        "networkproblem_message=Check your proxy settings or try again later. "

            + "The server may be unavailable at the moment. "

            + "You may also want to make sure that your firewall is not blocking network traffic. \n\n"

            + "If you have the missing \"junit\" library, you can resolve the reference "

            + "problem manually using Library Manager.",

        "proxy_button=&Proxy Settings...",

            });

            dlg.setVisible(true);

            handle.finish();

            if (NotifyDescriptor.CANCEL_OPTION.equals(searching.getValue()) || searching.getValue().equals(-1) /* escape */) {

                LOG.fine("user canceled searching JUnit");

                return showNoDownloadDialog(name);

            } else if (libraryManager.equals(searching.getValue())) {

                throw new Exception("user canceled searching");

            }

            unit = findJUnitLib();

            if (unit == null) {

                LOG.fine("could not find junitlib on any update site");

                return showNoDownloadDialog(name);

            }

        }

        // check if JUnit installed

        if (unit.getInstalled() != null) {

            LOG.fine(unit.getInstalled() + " already installed. Is active? " + unit.getInstalled().isEnabled());

            if (unit.getInstalled().isEnabled()) {

                throw new Exception(unit.getInstalled() + " already installed and active");

            } else {

                // activate it

                OperationContainer<OperationSupport> oc = OperationContainer.createForEnable();

                if (!oc.canBeAdded(unit, unit.getInstalled())) {

                    throw new Exception("could not add " + unit.getInstalled() + " for activation");

                }

                for (UpdateElement req : oc.add(unit.getInstalled()).getRequiredElements()) {

                    oc.add(req);

                }

                ProgressHandle activeHandle = ProgressHandleFactory.createHandle (active_handle());

                Restarter restarter = oc.getSupport().doOperation(activeHandle);

                assert restarter == null : "No Restater need to make " + unit.getInstalled() + " active";