/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.jmeter.gui;
import java.awt.BorderLayout;
import java.awt.Insets;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.ScrollPaneConstants;
import javax.swing.SwingUtilities;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.log.LogEvent;
import org.apache.log.LogTarget;
import org.apache.log.format.PatternFormatter;
/**
* Panel that shows log events
*/
public class LoggerPanel extends JPanel implements LogTarget {
private static final long serialVersionUID = 6911128494402594429L;
private JTextArea textArea;
private final PatternFormatter format;
// Limit length of log content
private static final int LOGGER_PANEL_MAX_LENGTH =
JMeterUtils.getPropDefault("jmeter.loggerpanel.maxlength", 80000); // $NON-NLS-1$
/**
* Pane for display JMeter log file
*/
public LoggerPanel() {
init();
format = new PatternFormatter(LoggingManager.DEFAULT_PATTERN + "\n"); // $NON-NLS-1$
}
private void init() {
this.setLayout(new BorderLayout());
// TEXTAREA
textArea = new JTextArea();
textArea.setEditable(false);
textArea.setLineWrap(false);
textArea.setMargin(new Insets(2, 2, 2, 2)); // space between borders and text
JScrollPane areaScrollPane = new JScrollPane(textArea);
areaScrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
areaScrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
this.add(areaScrollPane, BorderLayout.CENTER);
}
/* (non-Javadoc)
* @see org.apache.log.LogTarget#processEvent(org.apache.log.LogEvent)
*/
@Override
public void processEvent(final LogEvent logEvent) {
if(!GuiPackage.getInstance().getMenuItemLoggerPanel().getModel().isSelected()) {
return;
}
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
synchronized (textArea) {
textArea.append(format.format(logEvent));
int currentLength = textArea.getText().length();
// If LOGGER_PANEL_MAX_LENGTH is 0, it means all log events are kept
if(LOGGER_PANEL_MAX_LENGTH != 0 && currentLength> LOGGER_PANEL_MAX_LENGTH) {
textArea.setText(textArea.getText().substring(Math.max(0, currentLength-LOGGER_PANEL_MAX_LENGTH),
currentLength));
}
textArea.setCaretPosition(textArea.getText().length());
}
}
});
}
/**
* Clear panel content
*/
public void clear() {
this.textArea.setText(""); // $NON-NLS-1$
}
}