/*
 *                 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 1997-2000 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.examples.modules.audioloader;
import java.awt.*;
import java.io.*;
import java.util.*;
import javax.sound.sampled.*;
import javax.swing.*;
import javax.swing.event.*;
import org.openide.*;
import org.openide.cookies.ViewCookie;
import org.openide.filesystems.*;
import org.openide.loaders.*;
import org.openide.util.*;
public class MicrophoneTemplateIterator implements TemplateWizard.Iterator, WizardDescriptor.Panel {
    private transient TemplateWizard wiz;
    private transient boolean onMainPanel;
    private transient byte[] recorded;
    private transient AudioFormat format;
    private transient Set listeners = new HashSet (1); // Set
    private transient JComponent recordPanel;
    // TemplateWizard.Iterator methods:
    public Set instantiate (TemplateWizard wiz) throws IOException {
        DataFolder folder = wiz.getTargetFolder ();
        String name = wiz.getTargetName ();
        if (name == null) name = wiz.getTemplate ().getName ();
        DataObject template = wiz.getTemplate ();
        String extension = template.getPrimaryFile ().getExt ();
        FileObject fo = folder.getPrimaryFile ().createData (name, extension);
        FileLock lock = fo.lock ();
        try {
            OutputStream os = fo.getOutputStream (lock);
            try {
                if (onMainPanel) {
                    // Creating sample from recording.
                    if (recorded == null) throw new IOException ("should never happen");
                    InputStream is = new ByteArrayInputStream (recorded);
                    AudioInputStream ais = new AudioInputStream (is, format, recorded.length / format.getFrameSize ());
                    AudioFileFormat.Type filetype;
                    if ("aif".equals (extension) || "aiff".equals (extension)) {
                        filetype = AudioFileFormat.Type.AIFF;
                    } else if ("aifc".equals (extension)) {
                        filetype = AudioFileFormat.Type.AIFC;
                    } else if ("wav".equals (extension)) {
                        filetype = AudioFileFormat.Type.WAVE;
                    } else if ("snd".equals (extension)) {
                        filetype = AudioFileFormat.Type.SND;
                    } else {
                        // Decent fallback format, incl. for MIDI templates.
                        filetype = AudioFileFormat.Type.AU;
                    }
                    AudioSystem.write (ais, filetype, os);
                } else {
                    // Simply copying template.
                    InputStream is = template.getPrimaryFile ().getInputStream ();
                    try {
                        byte[] buf = new byte[4096];
                        int i;
                        while ((i = is.read (buf)) != -1) {
                            os.write (buf, 0, i);
                        }
                    } finally {
                        is.close ();
                    }
                }
            } finally {
                os.close ();
            }
        } finally {
            lock.releaseLock ();
        }
        DataObject obj = DataObject.find (fo);
        ViewCookie view = (ViewCookie) obj.getCookie (ViewCookie.class);
        if (view != null) {
            view.view ();
        }
        return Collections.singleton (obj);
    }
    public void initialize (TemplateWizard wiz) {
        onMainPanel = false;
        recorded = null;
        format = null;
        this.wiz = wiz;
        recordPanel = new RecordPanel (this);
        Component c = wiz.targetChooser ().getComponent ();
        String[] steps = new String[] {
            c.getName (),
            NbBundle.getMessage (MicrophoneTemplateIterator.class, "LBL_wizard_iterator"),
        };
        if (c instanceof JComponent) {
            JComponent jc = (JComponent) c;
            jc.putClientProperty ("WizardPanel_contentSelectedIndex", new Integer (0));
            jc.putClientProperty ("WizardPanel_contentData", steps);
        }
        recordPanel.putClientProperty ("WizardPanel_contentSelectedIndex", new Integer (1));
        recordPanel.putClientProperty ("WizardPanel_contentData", steps);
    }
    public void uninitialize (TemplateWizard wiz) {
        wiz = null;
        recorded = null;
        format = null;
        recordPanel = null;
    }
    // Wizard.Iterator methods:
    public WizardDescriptor.Panel current () {
        return onMainPanel ? this : wiz.targetChooser ();
    }
    public void previousPanel () {
        if (! onMainPanel) throw new NoSuchElementException ();
        onMainPanel = false;
    }
    public void nextPanel () {
        if (onMainPanel) throw new NoSuchElementException ();
        onMainPanel = true;
    }
    public String name () {
        return NbBundle.getMessage (MicrophoneTemplateIterator.class, "LBL_wizard_iterator");
    }
    public boolean hasPrevious () {
        return onMainPanel;
    }
    public boolean hasNext () {
        return ! onMainPanel;
    }
    // Wizard.Iterator and WizardDescriptor.Panel both:
    public synchronized void addChangeListener (ChangeListener l) {
        listeners.add (l);
    }
    public synchronized void removeChangeListener (ChangeListener l) {
        listeners.remove (l);
    }
    // WizardDescriptor.Panel:
    public Component getComponent () {
        return recordPanel;
    }
    public HelpCtx getHelp () {
        return HelpCtx.DEFAULT_HELP;
    }
    public boolean isValid () {
        return recorded != null;
    }
    public void readSettings (Object settings) {
        // No state between panels, except what is in this class.
    }
    public void storeSettings (Object settings) {
        // No state between panels, except what is in this class.
    }
    // Access methods for RecordPanel:
    private synchronized void fireChangeEvent () {
        ChangeEvent ev = new ChangeEvent (this);
        Iterator it = listeners.iterator ();
        while (it.hasNext ()) {
            ChangeListener l = (ChangeListener) it.next ();
            l.stateChanged (ev);
        }
    }
    void setRecorded (byte[] audiodata, AudioFormat f) {
        recorded = audiodata;
        format = f;
        fireChangeEvent ();
    }
    private void readObject (ObjectInputStream in) throws ClassNotFoundException, IOException {
        in.defaultReadObject ();
        listeners = new HashSet (1);
    }
}