org.kepler.gui.kar.KarManifestViewer.java Source code

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Here is the source code for org.kepler.gui.kar.KarManifestViewer.java

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/*
 * Copyright (c) 2010 The Regents of the University of California.
 * All rights reserved.
 *
 * '$Author: crawl $'
 * '$Date: 2012-09-11 15:16:15 -0700 (Tue, 11 Sep 2012) $' 
 * '$Revision: 30633 $'
 * 
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and its documentation for any purpose, provided that the above
 * copyright notice and the following two paragraphs appear in all copies
 * of this software.
 *
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
 * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
 * THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
 * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
 * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
 * ENHANCEMENTS, OR MODIFICATIONS.
 *
 */

/**
 * 
 */
package org.kepler.gui.kar;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.kepler.kar.KARFile;
import org.kepler.objectmanager.lsid.KeplerLSID;

/**
 * @author Aaron Schultz
 * 
 */
public class KarManifestViewer extends JFrame implements ActionListener {
    private static final long serialVersionUID = -739762970203187753L;
    private static final Log log = LogFactory.getLog(KarManifestViewer.class.getName());
    private static final boolean isDebugging = log.isDebugEnabled();

    private KARFile _karFile;
    private JTextField _lsidField;
    private JTextArea _manifestField;
    private JScrollPane _manifestScrollPane;

    /**
     * @throws HeadlessException
     */
    public KarManifestViewer() throws HeadlessException {
        this("KAR Manifest Viewer");
    }

    /**
     * @param title
     * @throws HeadlessException
     */
    public KarManifestViewer(String title) throws HeadlessException {
        super(title);
    }

    public void initialize(KARFile karFile) {
        if (isDebugging) {
            log.debug("initialize( " + karFile + " )");
        }
        _karFile = karFile;

        JPanel layoutPanel = new JPanel();
        layoutPanel.setLayout(new BorderLayout());

        JPanel lsidPanel = new JPanel();
        lsidPanel.setLayout(new BorderLayout());

        JLabel lsidLabel = new JLabel("KAR LSID:");
        lsidPanel.add(lsidLabel, BorderLayout.WEST);

        _lsidField = new JTextField("");
        _lsidField.setEditable(false);
        lsidPanel.add(_lsidField, BorderLayout.CENTER);

        JPanel dfPanel = new JPanel();
        dfPanel.setLayout(new BorderLayout());

        _manifestField = new JTextArea("");
        _manifestField.setEditable(false);
        _manifestScrollPane = new JScrollPane(_manifestField);
        _manifestScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        _manifestScrollPane
                .setBorder(
                        BorderFactory.createCompoundBorder(
                                BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("Manifest"),
                                        BorderFactory.createEmptyBorder(5, 5, 5, 5)),
                                _manifestScrollPane.getBorder()));

        dfPanel.add(_manifestScrollPane, BorderLayout.CENTER);

        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new BorderLayout());

        String infStr = _karFile.getName();
        JLabel objInfo = new JLabel(infStr);
        buttonPanel.add(objInfo, BorderLayout.CENTER);

        JButton refreshButton = new JButton("Refresh");
        refreshButton.addActionListener(this);
        buttonPanel.add(refreshButton, BorderLayout.EAST);

        layoutPanel.add(lsidPanel, BorderLayout.NORTH);
        layoutPanel.add(dfPanel, BorderLayout.CENTER);
        layoutPanel.add(buttonPanel, BorderLayout.SOUTH);

        getContentPane().add(layoutPanel);

        refreshValues();

        getContentPane().setBackground(Color.WHITE);
    }

    /**
     * Update the textfield and textarea to reflect the current LSID and LSID
     * referral list values.
     */
    public void refreshValues() {

        KeplerLSID lsid = _karFile.getLSID();

        StringBuilder manifest = new StringBuilder();
        try {
            ZipEntry mane = _karFile.getEntry(JarFile.MANIFEST_NAME);

            final char[] buffer = new char[0x10000];
            InputStream is = _karFile.getInputStream(mane);
            Reader in = null;
            try {
                in = new InputStreamReader(is);
                int read;
                do {
                    read = in.read(buffer, 0, buffer.length);
                    if (read > 0) {
                        manifest.append(buffer, 0, read);
                    }
                } while (read >= 0);
            } finally {
                if (in != null) {
                    in.close();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        if (isDebugging) {
            log.debug(lsid.toString());
            log.debug(manifest.toString());
        }
        _lsidField.setText(lsid.toString());
        _manifestField.setText(manifest.toString());

        // not sure why this doesn't work
        // _manifestScrollPane.getVerticalScrollBar().setValue(0);
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
     */
    public void actionPerformed(ActionEvent e) {
        Object o = e.getSource();
        if (o instanceof JButton) {
            JButton b = (JButton) o;
            if (b.getText().equals("Refresh")) {
                log.debug("Refresh");
                refreshValues();
            }
        }
    }

}