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/* Logging.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* 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
* General Public License for more details.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.logging;
import be.ugent.caagt.swirl.logging.JListLogCellRenderer;
import be.ugent.caagt.swirl.logging.JListLogHandler;
import java.awt.Frame;
import java.util.logging.Formatter;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.LogManager;
import java.util.logging.LogRecord;
import javax.swing.Icon;
import javax.swing.JDialog;
import javax.swing.JList;
import javax.swing.JScrollPane;
import org.grinvin.gui.icons.SvgIconManager;
import org.grinvin.help.HelpManager;
/**
* Installs the main log handler for the application.
*/
public final class Logging {
// not to be instantiated
private Logging() {}
//
private static LoggingWindow loggingWindow;
/**
* The main logging window of this application, or null
* when the logging handler was not yet initialized.
*/
public static LoggingWindow getLoggingWindow() {
return loggingWindow;
}
/**
* Initializes the logging handler for this application
* if this was not already done before.
* @param windowTitle Title to be used for the logging window.
*/
public static void installHandler(String windowTitle) {
if (loggingWindow == null) {
loggingWindow = new LoggingWindow((Frame)null, windowTitle, false);
JList list = new JList();
Handler handler = new JListLogHandler(list);
LogManager.getLogManager().getLogger("").addHandler(handler);
loggingWindow.add(new JScrollPane(list));
loggingWindow.pack();
loggingWindow.setSize(500, 300); // reasonable default size
list.setCellRenderer(new Renderer(handler.getFormatter()));
HelpManager.setHelpIDString(loggingWindow, "org.grinvin.window.logging");
HelpManager.enableHelpKey(loggingWindow.getRootPane(), "org.grinvin.window.logging");
HelpManager.enableHelpKey(list, "org.grinvin.window.logging");
}
}
/**
* Private cell renderer which uses icons for some of the severity levels.
*/
private static class Renderer extends JListLogCellRenderer {
private static Icon severeIcon
= SvgIconManager.getInstance().getIcon("/org/grinvin/logging/severe.svg", 16);
private static Icon warningIcon
= SvgIconManager.getInstance().getIcon("/org/grinvin/logging/warn.svg", 16);
private static Icon infoIcon
= SvgIconManager.getInstance().getIcon("/org/grinvin/logging/info.svg", 16);
public Renderer(Formatter formatter) {
super(formatter);
}
protected Icon toIcon(LogRecord record) {
int val = record.getLevel().intValue();
if (val < Level.INFO.intValue())
return null;
else if (val < Level.WARNING.intValue())
return infoIcon;
else if (val < Level.SEVERE.intValue())
return warningIcon;
else
return severeIcon;
}
}
}
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