/*
* 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 com.sun.jini.example.browser;
import com.sun.jini.outrigger.JavaSpaceAdmin;
import com.sun.jini.outrigger.AdminIterator;
import net.jini.core.entry.Entry;
import net.jini.core.entry.UnusableEntryException;
import net.jini.core.lease.Lease;
import net.jini.space.JavaSpace05;
import net.jini.space.MatchSet;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
/**
* A browser utility to browse entries in a specified space.
*
* @author Sun Microsystems, Inc.
*
* @version 0.2 06/04/98
*/
class SpaceBrowser extends JFrame {
//private SpaceEntryPanel entryPanel;
private final static int MINIMUM_WINDOW_WIDTH = 320;
private Browser browser;
public SpaceBrowser(Object proxy, Browser browser) {
super("SpaceBrowser");
this.browser = browser;
// init main components
SpaceEntryPanel entryPanel = new SpaceEntryPanel(proxy);
// add menu and attr panel
getContentPane().setLayout(new BorderLayout());
getContentPane().add(new BrowserMenuBar(entryPanel), "North");
getContentPane().add(entryPanel, "Center");
validate();
pack();
setSize(((getSize().width < MINIMUM_WINDOW_WIDTH) ? MINIMUM_WINDOW_WIDTH : getSize().width),
getSize().height);
// center in parent frame
Rectangle bounds = browser.getBounds();
Dimension dialogSize = getPreferredSize();
int xpos = bounds.x + (bounds.width - dialogSize.width)/ 2;
int ypos = bounds.y + (bounds.height - dialogSize.height)/2;
setLocation((xpos < 0) ? 0 : xpos,
(ypos < 0) ? 0 : ypos);
}
class BrowserMenuBar extends JMenuBar {
private EntryTreePanel entryPanel;
public BrowserMenuBar(EntryTreePanel entryPanel) {
this.entryPanel = entryPanel;
JMenuItem mitem;
// "File" Menu
JMenu fileMenu = (JMenu) add(new JMenu("File"));
mitem = (JMenuItem) fileMenu.add(new JMenuItem("Refresh"));
mitem.addActionListener(browser.wrap(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
BrowserMenuBar.this.entryPanel.refreshPanel();
}
}));
mitem = (JMenuItem) fileMenu.add(new JMenuItem("Close"));
mitem.addActionListener(browser.wrap(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
SpaceBrowser.this.setVisible(false);
}
}));
}
}
class SpaceEntryPanel extends EntryTreePanel {
private Object proxy;
public SpaceEntryPanel(Object proxy) {
super(false); // Entries are not editable.
this.proxy = proxy;
refreshPanel();
}
protected Entry[] getEntryArray() {
try {
List acc = new java.util.LinkedList();
if (proxy instanceof JavaSpace05) {
MatchSet set =
((JavaSpace05) proxy).contents(Collections.singleton(null),
null, Lease.ANY, Integer.MAX_VALUE);
Lease lease = set.getLease();
if (lease != null) {
lease = (Lease) browser.leasePreparer.prepareProxy(lease);
browser.leaseMgr.renewUntil(lease, Lease.ANY, null);
}
try {
while (true) {
try {
Entry e = set.next();
if (e == null)
break;
acc.add(e);
} catch (UnusableEntryException e) {
Browser.logger.log(Level.INFO, "unusable entry", e);
}
}
} finally {
if (lease != null) {
try {
browser.leaseMgr.cancel(lease);
} catch (Exception e) {
}
}
}
} else {
AdminIterator iter =
((JavaSpaceAdmin) proxy).contents(null, null, 128);
try {
while (true) {
try {
Entry e = iter.next();
if (e == null)
break;
acc.add(e);
} catch (UnusableEntryException e) {
Browser.logger.log(Level.INFO, "unusable entry", e);
}
}
} finally {
try {
iter.close();
} catch (Exception e) {
}
}
}
return (Entry[])acc.toArray(new Entry[acc.size()]);
} catch (Throwable t) {
Browser.logger.log(Level.INFO, "obtaining entries failed", t);
}
return null;
}
}
}