/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.demo.ancient.demo.swingicons;
import java.awt.Image;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import javax.swing.ImageIcon;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.libraries.base.util.IOUtils;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* A table model implementation for the SwingIconsDemo.java demo application. The model reads the contents of the file
* "jlfgr-1_0.jar", which must be reachable via the classpath.
*
* @author Thomas Morgner.
*/
public class SwingIconsDemoTableModel extends IconTableModel
{
private static final Log logger = LogFactory.getLog(SwingIconsDemoTableModel.class);
/**
* Creates a new table model.
*/
public SwingIconsDemoTableModel()
{
}
/**
* Creates a new table model.
*
* @param url the url for the jlfgr-1_0.jar file (or <code>null</code> to search the classpath).
*/
public SwingIconsDemoTableModel(URL url)
{
if (url == null)
{
url = ObjectUtilities.getResource("/jlfgr-1_0.jar", SwingIconsDemoTableModel.class);
if (url == null)
{
logger.warn("Unable to find jlfgr-1_0.jar inside the classpath.\n"
+ "Unable to load the icons.\n"
+ "Please make sure you have the Java Look and Feel Graphics Repository in "
+ "your classpath.\n"
+ "You may download this jar-file from "
+ "http://developer.java.sun.com/developer/techDocs/hi/repository.");
return;
}
}
readData(url);
}
public boolean readData(final URL url)
{
if (url == null)
{
throw new NullPointerException("URL given must not be null.");
}
clear();
try
{
logger.debug("Open URL: " + url);
final InputStream in = new BufferedInputStream(url.openStream());
final boolean retval = readData(in);
in.close();
logger.debug("Loaded: " + getRowCount() + " icons");
return retval;
}
catch (Exception e)
{
logger.warn("Failed to load the Icons", e);
return false;
}
}
/**
* Reads the icon data from the jar file.
*
* @param in the input stream.
*/
private boolean readData(final InputStream in)
{
try
{
final ZipInputStream iconJar = new ZipInputStream(in);
ZipEntry ze = iconJar.getNextEntry();
while (ze != null)
{
final String fullName = ze.getName();
if (fullName.endsWith(".gif"))
{
final String category = getCategory(fullName);
final String name = getName(fullName);
final Image image = getImage(iconJar);
final Long bytes = new Long(ze.getSize());
//logger.debug ("Add Icon: " + name);
addIconEntry(name, category, image, bytes);
}
iconJar.closeEntry();
ze = iconJar.getNextEntry();
}
}
catch (IOException e)
{
logger.warn("Unable to load the Icons", e);
return false;
}
return true;
}
/**
* Reads an icon from the jar file.
*
* @param in the input stream.
* @return The image.
*/
private Image getImage(final InputStream in)
{
Image result = null;
final ByteArrayOutputStream byteIn = new ByteArrayOutputStream();
try
{
IOUtils.getInstance().copyStreams(in, byteIn);
final ImageIcon temp = new ImageIcon(byteIn.toByteArray());
result = temp.getImage();
}
catch (IOException e)
{
logger.warn("Unable to read the ZIP-Entry", e);
}
return result;
}
/**
* Returns the category.
*
* @param fullName the icon file path/name.
* @return The category extracted from the file name.
*/
private String getCategory(final String fullName)
{
final int start = fullName.indexOf("/") + 1;
final int end = fullName.lastIndexOf("/");
return fullName.substring(start, end);
}
/**
* Returns the name.
*
* @param fullName the icon file path/name.
* @return The name extracted from the full name.
*/
private String getName(final String fullName)
{
final int start = fullName.lastIndexOf("/") + 1;
final int end = fullName.indexOf(".");
return fullName.substring(start, end);
}
}