/*******************************************************************************
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership.
*
* 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 hr.fer.zemris.vhdllab.view;
import javax.swing.JComponent;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import org.apache.commons.lang.time.DateFormatUtils;
import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.spi.LoggingEvent;
import org.springframework.richclient.application.support.AbstractView;
/**
* @author Miro Bezjak
* @version 1.0
* @since 6.2.2009.
*/
public class LogHistoryView extends AbstractView {
@Override
protected JComponent createControl() {
JTextPane textPane = new JTextPane();
textPane.setEditable(false);
textPane.setAutoscrolls(true);
setupLogAppender(textPane);
return new JScrollPane(textPane);
}
private void setupLogAppender(final JTextPane textPane) {
Logger.getRootLogger().addAppender(new AppenderSkeleton() {
@Override
protected void append(LoggingEvent event) {
if (!event.getLevel().equals(Level.INFO)) {
return;
}
StringBuilder sb = new StringBuilder();
String time = DateFormatUtils.ISO_TIME_NO_T_FORMAT
.format(event.timeStamp);
sb.append(time).append(" ").append(event.getMessage());
Document document = textPane.getDocument();
int documentLength = document.getLength();
try {
document.insertString(documentLength, sb.toString() + "\n",
null);
} catch (BadLocationException e) {
throw new IllegalStateException(e);
}
// scroll to end of document
textPane.setCaretPosition(documentLength);
}
@Override
public boolean requiresLayout() {
return false;
}
@Override
public void close() {
}
});
}
}