GWTGAEProjectWizardIterator.java

/*
 * The contents of this file are subject to the terms of the Common Development
 * and Distribution License (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.html
 * or http://www.netbeans.org/cddl.txt.
 *
 * When distributing Covered Code, include this CDDL Header Notice in each file
 * and include the License file at http://www.netbeans.org/cddl.txt.
 * If applicable, add the following below the CDDL Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * The Original Software is NetBeans. The Initial Developer of the Original
 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
 * Microsystems, Inc. All Rights Reserved.
 */
package org.netbeans.modules.gwt4nb;

import java.awt.Component;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.MessageFormat;
import java.util.LinkedHashSet;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import javax.swing.JComponent;
import javax.swing.event.ChangeListener;
import org.netbeans.spi.project.ui.support.ProjectChooser;
import org.netbeans.spi.project.ui.templates.support.Templates;
import org.openide.WizardDescriptor;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileUtil;
import org.openide.util.NbBundle;

/**
 * Iterator for creating a new GWT/GAE/Maven/JDO project.
 */
public class GWTGAEProjectWizardIterator implements WizardDescriptor./*Progress*/InstantiatingIterator {
    private int index;
    private WizardDescriptor.Panel[] panels;
    private WizardDescriptor wiz;

    public static GWTGAEProjectWizardIterator createIterator() {
        return new GWTGAEProjectWizardIterator();
    }

    private WizardDescriptor.Panel[] createPanels() {
        return new WizardDescriptor.Panel[]{
                    new GWTGAEProjectWizardPanel(),};
    }

    private String[] createSteps() {
        return new String[] {
                NbBundle.getMessage(GWTGAEProjectWizardIterator.class,
                "LBL_CreateProjectStep") // NOI18N
        };
    }

    public Set<FileObject> instantiate(/*ProgressHandle handle*/)
            throws IOException {
        Set<FileObject> r = new LinkedHashSet<FileObject>();
        File dirF = FileUtil.normalizeFile((File) wiz.getProperty(
                "projdir")); // NOI18N
        if (!dirF.mkdirs()) {
            GWT4NBUtil.unexpectedException(new IOException(
                    "Cannnot create " + dirF)); // NOI18N
            return r;
        }

        FileObject template = Templates.getTemplate(wiz);
        FileObject dir = FileUtil.toFileObject(dirF);
        unZipFile(template.getInputStream(), dir);

        // Always open top dir as a project:
        r.add(dir);
        
        // Look for nested projects to open as well:
        /*Enumeration<? extends FileObject> e = dir.getFolders(true);
        while (e.hasMoreElements()) {
            FileObject subfolder = e.nextElement();
            if (ProjectManager.getDefault().isProject(subfolder)) {
                resultSet.add(subfolder);
            }
        }*/

        File parent = dirF.getParentFile();
        if (parent != null && parent.exists()) {
            ProjectChooser.setProjectsFolder(parent);
        }

        return r;
    }

    public void initialize(WizardDescriptor wiz) {
        this.wiz = wiz;
        index = 0;
        panels = createPanels();
        // Make sure list of steps is accurate.
        String[] steps = createSteps();
        for (int i = 0; i < panels.length; i++) {
            Component c = panels[i].getComponent();
            if (steps[i] == null) {
                // Default step name to component name of panel.
                // Mainly useful for getting the name of the target
                // chooser to appear in the list of steps.
                steps[i] = c.getName();
            }
            if (c instanceof JComponent) { // assume Swing components
                JComponent jc = (JComponent) c;
                // Step #.
                // TODO if using org.openide.dialogs >= 7.8, can use WizardDescriptor.PROP_*:
                jc.putClientProperty("WizardPanel_contentSelectedIndex", // NOI18N
                        new Integer(i));
                // Step name (actually the whole list for reference).
                jc.putClientProperty("WizardPanel_contentData", // NOI18N
                        steps);
            }
        }
    }

    public void uninitialize(WizardDescriptor wiz) {
        this.wiz.putProperty("projdir", null); // NOI18N
        this.wiz.putProperty("name", null); // NOI18N
        this.wiz = null;
        panels = null;
    }

    public String name() {
        return MessageFormat.format(org.openide.util.NbBundle.getMessage(
                GWTGAEProjectWizardIterator.class, "Of"), // NOI18N
                new Object[]{new Integer(index + 1),
                new Integer(panels.length)});
    }

    public boolean hasNext() {
        return index < panels.length - 1;
    }

    public boolean hasPrevious() {
        return index > 0;
    }

    public void nextPanel() {
        if (!hasNext()) {
            throw new NoSuchElementException();
        }
        index++;
    }

    public void previousPanel() {
        if (!hasPrevious()) {
            throw new NoSuchElementException();
        }
        index--;
    }

    public WizardDescriptor.Panel current() {
        return panels[index];
    }

    public final void addChangeListener(ChangeListener l) {
    }

    public final void removeChangeListener(ChangeListener l) {
    }

    private static void unZipFile(InputStream source,
            FileObject projectRoot) throws IOException {
        try {
            ZipInputStream str = new ZipInputStream(source);
            ZipEntry entry;
            while ((entry = str.getNextEntry()) != null) {
                if (entry.isDirectory()) {
                    FileUtil.createFolder(projectRoot, entry.getName());
                } else {
                    FileObject fo = FileUtil.createData(projectRoot,
                            entry.getName());
                    OutputStream out = fo.getOutputStream();
                    try {
                        FileUtil.copy(str, out);
                    } finally {
                        out.close();
                    }
                }
            }
        } finally {
            source.close();
        }
    }
}