/*
* Copyright 2008-2014 by Emeric Vernat
*
* This file is part of Java Melody.
*
* 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 net.bull.javamelody;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.List;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import net.bull.javamelody.swing.MButton;
import net.bull.javamelody.swing.MHyperLink;
import net.bull.javamelody.swing.Utilities;
import net.bull.javamelody.swing.table.MTable;
import net.bull.javamelody.swing.table.MTableScrollPane;
/**
* Panel des caches (EHCache).
* @author Emeric Vernat
*/
class CacheInformationsPanel extends MelodyPanel {
private static final ImageIcon CLEAR_CACHES_ICON = ImageIconCache.getScaledImageIcon(
"user-trash.png", 18, 18);
private static final long serialVersionUID = 1L;
private final boolean hitsRatioEnabled;
private final boolean configurationEnabled;
private final MTable<CacheInformations> table;
CacheInformationsPanel(RemoteCollector remoteCollector,
List<CacheInformations> cacheInformationsList) {
super(remoteCollector);
assert cacheInformationsList != null;
this.hitsRatioEnabled = HtmlCacheInformationsReport
.isHitsRatioEnabled(cacheInformationsList);
this.configurationEnabled = HtmlCacheInformationsReport
.isConfigurationEnabled(cacheInformationsList);
final MTableScrollPane<CacheInformations> scrollPane = createScrollPane();
this.table = scrollPane.getTable();
table.setList(cacheInformationsList);
Utilities.adjustTableHeight(table);
add(scrollPane, BorderLayout.NORTH);
final MHyperLink hyperLink = new MHyperLink(
" Configuration reference",
"http://ehcache.sourceforge.net/apidocs/net/sf/ehcache/config/CacheConfiguration.html#field_summary");
add(hyperLink, BorderLayout.WEST);
final JPanel eastPanel = new JPanel();
eastPanel.setLayout(new BoxLayout(eastPanel, BoxLayout.Y_AXIS));
eastPanel.setOpaque(false);
if (!hitsRatioEnabled) {
final JLabel statisticsEnabledLabel = new JLabel(
getString("caches_statistics_enable") + ' ');
statisticsEnabledLabel.setAlignmentX(SwingConstants.WEST);
eastPanel.add(statisticsEnabledLabel);
}
if (Parameters.isSystemActionsEnabled()) {
final JPanel buttonsPanel = createButtonsPanel();
buttonsPanel.setAlignmentX(SwingConstants.RIGHT);
eastPanel.add(buttonsPanel);
}
add(eastPanel, BorderLayout.EAST);
}
private MTableScrollPane<CacheInformations> createScrollPane() {
final MTableScrollPane<CacheInformations> tableScrollPane = new MTableScrollPane<>();
final MTable<CacheInformations> myTable = tableScrollPane.getTable();
myTable.addColumn("name", getString("Cache"));
if (configurationEnabled) {
myTable.addColumn("inMemoryPercentUsed", getString("Pourcentage_memoire_utilise"));
}
myTable.addColumn("inMemoryObjectCount", getString("Nb_objets_en_memoire"));
myTable.addColumn("onDiskObjectCount", getString("Nb_objets_sur_disque"));
if (hitsRatioEnabled) {
myTable.addColumn("inMemoryHitsRatio", "<html>"
+ getString("Efficacite_cache_memoire").replaceAll("\n", "<br/>"));
myTable.addColumn("hitsRatio",
"<html>" + getString("Efficacite_cache").replaceAll("\n", "<br/>"));
// la hauteur des entêtes de colonnes est calculée selon la hauteur pour la première colonne
// (see BasicTableHeaderUI.getHeaderHeight()),
// donc on agrandit la hauteur de la première entête de colonne, pour qu'elle soit adaptée
// aux deux ci-dessus
myTable.getColumn("name").setHeaderValue(
"<html><font size=1><br/></font>" + myTable.getColumn("name").getHeaderValue()
+ "<font size=1><br/> </font>");
}
if (configurationEnabled) {
myTable.addColumn("configuration", getString("Configuration"));
}
return tableScrollPane;
}
private JPanel createButtonsPanel() {
final JPanel buttonsPanel = Utilities.createButtonsPanel();
if (Parameters.isSystemActionsEnabled()) {
final MButton clearCacheButton = new MButton(getString("Purger"), CLEAR_CACHES_ICON);
getTable().getSelectionModel().addListSelectionListener(new ListSelectionListener() {
@Override
public void valueChanged(ListSelectionEvent e) {
final CacheInformations cacheInformations = getTable().getSelectedObject();
clearCacheButton.setEnabled(cacheInformations != null);
if (cacheInformations != null) {
clearCacheButton.setToolTipText(getFormattedString("Purge_cache",
cacheInformations.getName()));
} else {
clearCacheButton.setToolTipText(null);
}
}
});
clearCacheButton.setEnabled(getTable().getSelectedObject() != null);
clearCacheButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
final CacheInformations cacheInformations = getTable().getSelectedObject();
if (cacheInformations != null
&& confirm(getFormattedString("confirm_purge_cache",
cacheInformations.getName()))) {
actionClearCache(cacheInformations);
}
}
});
buttonsPanel.add(clearCacheButton);
final MButton clearCachesButton = new MButton(getString("Purge_caches"),
CLEAR_CACHES_ICON);
clearCachesButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (confirm(getString("confirm_purge_caches"))) {
actionClearCaches();
}
}
});
buttonsPanel.add(clearCachesButton);
}
return buttonsPanel;
}
final void actionClearCache(CacheInformations cacheInformations) {
try {
final String message = getRemoteCollector().executeActionAndCollectData(
Action.CLEAR_CACHE, null, null, null, null, cacheInformations.getName());
showMessage(message);
MainPanel.refreshMainTabFromChild(this);
} catch (final IOException ex) {
showException(ex);
}
}
final void actionClearCaches() {
try {
final String message = getRemoteCollector().executeActionAndCollectData(
Action.CLEAR_CACHES, null, null, null, null, null);
showMessage(message);
MainPanel.refreshMainTabFromChild(this);
} catch (final IOException ex) {
showException(ex);
}
}
MTable<CacheInformations> getTable() {
return table;
}
}