/*
 *                 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 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.tasklist.usertasks.translators;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.Writer;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.netbeans.modules.tasklist.core.*;
import org.netbeans.modules.tasklist.core.TaskList;
import org.netbeans.modules.tasklist.core.translators.AbstractTranslator;
import org.netbeans.modules.tasklist.usertasks.translators.UserTaskListXMLTranslator;
import org.openide.DialogDisplayer;
import org.openide.ErrorManager;
import org.openide.NotifyDescriptor;
import org.openide.awt.HtmlBrowser;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileStateInvalidException;
import org.openide.util.NbBundle;

/**
 * Creates HTML using XSL transformation
 *
 * @author  Tim Lebedkov
 */
public class HTMLTranslator extends AbstractTranslator {
    private String res;
    
    /** 
     * Creates a new instance of HTMLTranslator 
     *
     * @param res name of the XSL resource relative to usertasks/translators
     */
    public HTMLTranslator(String res) {
        this.res = res;
    }
    
    public String getDefaultExtension() {
        return "html"; // NOI18N
    }
    
    public String getImportName() {
        return null;
    }
    
    public String getExportName() {
        return NbBundle.getMessage(HTMLTranslator.class, "HTML"); // NOI18N
    }
    
    public boolean supportsImport() {
        return false;
    }
    
    public boolean supportsExport() {
        return true;
    }
    
    protected String getExportDialogTitle() {
        return NbBundle.getMessage(HTMLTranslator.class, "ExportHTML"); // NOI18N
    }
    
    protected String getImportDialogTitle() {
        return null;
    }
    
    public boolean writeList(TaskList list, OutputStream out,
    boolean interactive, File dir) throws IOException {
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        UserTaskListXMLTranslator t = new UserTaskListXMLTranslator();
        t.writeList(list, stream, interactive, dir);
        
        ByteArrayInputStream is = new ByteArrayInputStream(stream.toByteArray());
        TransformerFactory tf = TransformerFactory.newInstance();
        try {
            InputStream xsl = HTMLTranslator.class.
                getResourceAsStream(res);
            Transformer tr = tf.newTransformer(new StreamSource(xsl));
            tr.transform(new StreamSource(is), new StreamResult(out));
            return true;
        } catch (TransformerConfigurationException e) {
            ErrorManager.getDefault().notify(e);
            return false;
        } catch (TransformerException e) {
            ErrorManager.getDefault().notify(e);
            return false;
        }
    }
    
    protected void exportDone(FileObject file) {
        URL url = null;
        try {
            url = file.getURL();
        } catch (FileStateInvalidException e) {
            // Can't show URL
            ErrorManager.getDefault().notify(e);
            return;
        }

        // Show the result?
        NotifyDescriptor nd = new NotifyDescriptor.Confirmation (
                     NbBundle.getMessage(HTMLTranslator.class,
                                       "ViewExportedHTML"), // NOI18N
                     NotifyDescriptor.YES_NO_OPTION
        );
        Object result = DialogDisplayer.getDefault().notify(nd);
        if (NotifyDescriptor.YES_OPTION == result) {
            HtmlBrowser.URLDisplayer.getDefault().showURL(url);
        }
    }


   protected void exportDone(File file) {
        URL url;
        try {
            url = file.toURI().toURL();
        } catch (MalformedURLException e) {
            // Can't show URL
            ErrorManager.getDefault().notify(e);
            return;
        }

        // Show the result?
        NotifyDescriptor nd = new NotifyDescriptor.Confirmation (
                     NbBundle.getMessage(HTMLTranslator.class,
                                       "ViewExportedHTML"), // NOI18N
                     NotifyDescriptor.YES_NO_OPTION
        );
        Object result = DialogDisplayer.getDefault().notify(nd);
        if (NotifyDescriptor.YES_OPTION == result) {
            HtmlBrowser.URLDisplayer.getDefault().showURL(url);
        }
    }
}