alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code

/*
 *                 Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 *
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2004 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.java.project;

import java.awt.Component;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Set;
import javax.swing.JComponent;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.netbeans.api.java.project.JavaProjectConstants;
import org.netbeans.api.project.Project;
import org.netbeans.api.project.ProjectUtils;
import org.netbeans.api.project.SourceGroup;
import org.netbeans.api.project.Sources;
import org.netbeans.spi.java.project.support.ui.templates.JavaTemplates;
import org.netbeans.spi.project.ui.templates.support.Templates;
import org.openide.WizardDescriptor;
import org.openide.ErrorManager;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileUtil;
import org.openide.loaders.DataFolder;
import org.openide.loaders.DataObject;

/**
 * Wizard to create a new Java file.
 */
public class NewJavaFileWizardIterator implements WizardDescriptor.InstantiatingIterator {
    
    private static final long serialVersionUID = 1L;
    
    private boolean isPackage = false;
    
    /** Create a new wizard iterator. */
    public NewJavaFileWizardIterator() {}
    
    
    private NewJavaFileWizardIterator( boolean isPackage ) {
        this.isPackage = isPackage;
    }    
    
    public static NewJavaFileWizardIterator packageWizard() {
        return new NewJavaFileWizardIterator( true );
    }
            
    private WizardDescriptor.Panel[] createPanels (WizardDescriptor wizardDescriptor) {
        
        // Ask for Java folders
        Project project = Templates.getProject( wizardDescriptor );
        Sources sources = ProjectUtils.getSources(project);
        SourceGroup[] groups = sources.getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA);
        assert groups != null : "Cannot return null from Sources.getSourceGroups: " + sources;
        if (groups.length == 0) {
            groups = sources.getSourceGroups( Sources.TYPE_GENERIC ); 
            return new WizardDescriptor.Panel[] {            
                Templates.createSimpleTargetChooser( project, groups ),
            };
        }
        else {
            
            if ( isPackage ) {
                return new WizardDescriptor.Panel[] {
                    new JavaTargetChooserPanel( project, groups, null, true ),
                };
            }
            else {
                return new WizardDescriptor.Panel[] {
                    JavaTemplates.createPackageChooser( project, groups ),
                };
            }
        }
               
    }
    
    private String[] createSteps(String[] before, WizardDescriptor.Panel[] panels) {
        assert panels != null;
        // hack to use the steps set before this panel processed
        int diff = 0;
        if (before == null) {
            before = new String[0];
        } else if (before.length > 0) {
            diff = ("...".equals (before[before.length - 1])) ? 1 : 0; // NOI18N
        }
        String[] res = new String[ (before.length - diff) + panels.length];
        for (int i = 0; i < res.length; i++) {
            if (i < (before.length - diff)) {
                res[i] = before[i];
            } else {
                res[i] = panels[i - before.length + diff].getComponent ().getName ();
            }
        }
        return res;
    }
    
    public Set/**/ instantiate () throws IOException {
        FileObject dir = Templates.getTargetFolder( wiz );
        String targetName = Templates.getTargetName( wiz );
        
        DataFolder df = DataFolder.findFolder( dir );
        FileObject template = Templates.getTemplate( wiz );
        
        FileObject createdFile = null;
        if ( isPackage ) {
            targetName = targetName.replace( '.', '/' ); // NOI18N
            createdFile = FileUtil.createFolder( dir, targetName );
        }
        else {
            DataObject dTemplate = DataObject.find( template );                
            DataObject dobj = dTemplate.createFromTemplate( df, targetName );
            createdFile = dobj.getPrimaryFile();
            wiz.putProperty(JavaTargetChooserPanel.FOLDER_TO_DELETE, null);
        }
        
        return Collections.singleton( createdFile );
    }
    
        
    private transient int index;
    private transient WizardDescriptor.Panel[] panels;
    private transient WizardDescriptor wiz;
    
    public void initialize(WizardDescriptor wiz) {
        this.wiz = wiz;
        index = 0;
        panels = createPanels( wiz );
        // Make sure list of steps is accurate.
        String[] beforeSteps = null;
        Object prop = wiz.getProperty ("WizardPanel_contentData"); // NOI18N
        if (prop != null && prop instanceof String[]) {
            beforeSteps = (String[])prop;
        }
        String[] steps = createSteps (beforeSteps, panels);
        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 #.
                jc.putClientProperty("WizardPanel_contentSelectedIndex", new Integer(i)); // NOI18N
                // Step name (actually the whole list for reference).
                jc.putClientProperty("WizardPanel_contentData", steps); // NOI18N
            }
        }
    }
    public void uninitialize (WizardDescriptor wiz) {
        FileObject toDelete = (FileObject) wiz.getProperty(JavaTargetChooserPanel.FOLDER_TO_DELETE);
        if (toDelete != null) {
            wiz.putProperty(JavaTargetChooserPanel.FOLDER_TO_DELETE, null);
            try {
                toDelete.delete();
            } catch (IOException ioe) {
                ErrorManager.getDefault().notify(ioe);
            }
        }
        this.wiz = null;
        panels = null;
    }
    
    public String name() {
        //return "" + (index + 1) + " of " + panels.length;
        return ""; // NOI18N
    }
    
    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];
    }
    
    private transient Set listeners = new HashSet(1); // Set
    
    public final void addChangeListener(ChangeListener l) {
        synchronized(listeners) {
            listeners.add(l);
        }
    }
    public final void removeChangeListener(ChangeListener l) {
        synchronized(listeners) {
            listeners.remove(l);
        }
    }
    protected final void fireChangeEvent() {
        Iterator it;
        synchronized (listeners) {
            it = new HashSet(listeners).iterator();
        }
        ChangeEvent ev = new ChangeEvent(this);
        while (it.hasNext()) {
            ((ChangeListener)it.next()).stateChanged(ev);
        }
    }
     
    
}
... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.