/*
* Copyright 2003,2004,2005 Colin Crist
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package hermes.renderers;
import hermes.util.MessageUtils;
import hermes.util.XmlUtils;
import java.nio.charset.Charset;
import javax.jms.BytesMessage;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.TextMessage;
import javax.swing.JComponent;
import javax.swing.JEditorPane;
import javax.swing.JScrollPane;
import org.apache.log4j.Logger;
/**
* A renderer that displays toString() on a JMS message in a text area.
*
* @author colincrist@hermesjms.com
* @version $Id: XMLMessageRenderer.java,v 1.3 2007/02/18 16:13:41 colincrist
* Exp $
*/
public class XMLMessageRenderer extends AbstractMessageRenderer {
private static final Logger log = Logger.getLogger(XMLMessageRenderer.class);
public class MyConfig extends AbstractMessageRenderer.BasicConfig {
private String encoding = Charset.defaultCharset().name();
public String getEncoding() {
return encoding;
}
public void setEncoding(String encoding) {
this.encoding = encoding;
}
}
public XMLMessageRenderer() {
super();
setConfig(createConfig()); // force using instance of MyConfig
}
@Override
public JComponent render(JScrollPane parent, Message m) {
//
// Raw Panel.
JEditorPane pane = new JEditorPane();
parent.setViewportView(pane);
pane.setEditable(false);
try {
String string;
if (m instanceof BytesMessage) {
string = new String(MessageUtils.asBytes(m), getConfig().getEncoding());
} else {
string = new String(MessageUtils.asString(m).getBytes(Charset.defaultCharset()), getConfig().getEncoding());
}
pane.setContentType("text/xml");
pane.setText(XmlUtils.prettyPrintXml(string));
} catch (Throwable e) {
pane.setText(e.getMessage());
log.error("exception converting message to byte[]: ", e);
}
pane.setCaretPosition(0);
return pane;
}
@Override
public MyConfig createConfig() {
return new MyConfig();
}
@Override
public MyConfig getConfig() {
return (MyConfig) super.getConfig();
}
/**
* Any JMS message is rederable.
*/
@Override
public boolean canRender(Message message) {
try {
if (message instanceof TextMessage) {
final String text = ((TextMessage) message).getText();
return XmlUtils.isXML(text);
}
if (message instanceof BytesMessage) {
BytesMessage bytesMsg = (BytesMessage) message;
bytesMsg.reset();
final byte[] decl = new byte["<?xml".length()];
bytesMsg.readBytes(decl);
return XmlUtils.isXML(new String(decl));
}
} catch (JMSException e) {
log.error("error getting text: " + e.getMessage(), e);
}
return false;
}
@Override
public String getDisplayName() {
return "XML";
}
}