/*
* Copyright 1999,2004 The Apache Software Foundation.
*
* 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 org.apache.log4j.chainsaw;
import org.apache.log4j.Level;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import javax.swing.DefaultBoundedRangeModel;
import javax.swing.JLabel;
import javax.swing.JSlider;
/**
* A Slider implementation that allows a user to
* choose a particular Threshold
* .
* @author Paul Smith <psmith@apache.org>
*
*/
final class ThresholdSlider extends JSlider {
final List priorityList;
ThresholdSlider() {
Level[] levels =
new Level[] {
Level.OFF, Level.FATAL, Level.ERROR, Level.WARN, Level.INFO,
Level.DEBUG, Level.TRACE, Level.ALL
};
priorityList = Arrays.asList(levels);
Collections.sort(
priorityList,
new Comparator() {
public int compare(Object o1, Object o2) {
Level p1 = (Level) o1;
Level p2 = (Level) o2;
if (p1.toInt() == p2.toInt()) {
return 0;
} else if (p1.toInt() < p2.toInt()) {
return -1;
}
return 1;
}
});
setModel(
new DefaultBoundedRangeModel(
priorityList.indexOf(Level.TRACE), 0, 0, priorityList.size() - 1));
Hashtable labelMap = new Hashtable();
for (Iterator iter = priorityList.iterator(); iter.hasNext();) {
Level item = (Level) iter.next();
labelMap.put(
new Integer(priorityList.indexOf(item)), new JLabel(item.toString()));
// System.out.println("creating levels for :: " + item.toInt() + "," + item.toString());
}
setOrientation(JSlider.VERTICAL);
setInverted(true);
setLabelTable(labelMap);
setPaintLabels(true);
// setPaintTicks(true);
setSnapToTicks(true);
// setMajorTickSpacing(10000);
// setPaintTrack(true);
}
void setChosenLevel(Level level) {
setValue(priorityList.indexOf(level));
}
/**
* Returns the Log4j Level that is currently selected in this slider
* @return
*/
Level getSelectedLevel() {
Level level = (Level) priorityList.get(getValue());
if (level == null) {
level = Level.TRACE;
}
return level;
}
}