/*
* 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 net.jini.core.lookup.ServiceItem;
import net.jini.core.lookup.ServiceRegistrar;
import net.jini.core.lookup.ServiceMatches;
import net.jini.core.lookup.ServiceTemplate;
import net.jini.core.entry.Entry;
import net.jini.lookup.ui.factory.JFrameFactory;
import net.jini.lookup.entry.UIDescriptor;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.logging.Level;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.event.PopupMenuListener;
import javax.swing.event.PopupMenuEvent;
/**
* A browser utility to browse entries in a specified space.
*
* @author Sun Microsystems, Inc.
*
* @version 0.2 06/04/98
*
*/
class ServiceBrowser extends JFrame {
private Browser browser;
private AttributePanel attrPanel;
private final static int MINIMUM_WINDOW_WIDTH = 320;
public ServiceBrowser(ServiceItem item,
ServiceRegistrar registrar,
Browser browser)
{
super("ServiceItem Browser");
this.browser = browser;
// init main components
attrPanel = new AttributePanel(item, registrar);
// add menu and attr panel
getContentPane().setLayout(new BorderLayout());
getContentPane().add(new BrowserMenuBar(), "North");
getContentPane().add(attrPanel, "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 {
public BrowserMenuBar() {
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) {
attrPanel.refreshPanel();
}
}));
mitem = (JMenuItem) fileMenu.add(new JMenuItem("Close"));
mitem.addActionListener(browser.wrap(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
ServiceBrowser.this.setVisible(false);
}
}));
}
}
class AttributePanel extends EntryTreePanel {
private ServiceItem item;
private ServiceRegistrar registrar;
public AttributePanel(ServiceItem item, ServiceRegistrar registrar) {
super(false); // Entries are not editable.
this.item = item;
this.registrar = registrar;
tree.addMouseListener(browser.wrap(new ServiceBrowser.MouseReceiver(item,
uiDescriptorPopup())));
refreshPanel();
}
protected Entry[] getEntryArray() {
try{
ServiceMatches matches = registrar.lookup(new ServiceTemplate(item.serviceID,
new Class[] { item.service.getClass() },
new Entry[] {}),
10);
if(matches.totalMatches != 1)
Browser.logger.log(Level.INFO, "unexpected lookup matches: {0}",
new Integer(matches.totalMatches));
else
return matches.items[0].attributeSets;
} catch (Throwable t) {
Browser.logger.log(Level.INFO, "lookup failed", t);
}
return null;
}
}
// provides support for ServiceUI
public class UIDescriptorPopup extends JPopupMenu implements ActionListener,
PopupMenuListener {
protected transient JMenuItem showUIItem;
protected transient ServiceItem serviceItem;
public UIDescriptorPopup() {
super();
showUIItem = new JMenuItem("Show UI");
showUIItem.addActionListener(this);
showUIItem.setActionCommand("showUI");
add(showUIItem);
addPopupMenuListener(this);
setOpaque(true);
setLightWeightPopupEnabled(true);
}
public void actionPerformed(ActionEvent anEvent) {
UIDescriptor uiDescriptor = getSelectedUIDescriptor();
if (uiDescriptor == null) {
return;
}
try {
JFrameFactory uiFactory = (JFrameFactory)
uiDescriptor.getUIFactory(Thread.currentThread().getContextClassLoader());
JFrame frame = uiFactory.getJFrame(serviceItem);
frame.validate();
frame.setVisible(true);
}
catch (Exception e) {
e.printStackTrace();
return;
}
}
public void popupMenuWillBecomeVisible(PopupMenuEvent ev) {
}
public void popupMenuWillBecomeInvisible(PopupMenuEvent ev) {
}
public void popupMenuCanceled(PopupMenuEvent ev) {
}
public void setServiceItem(ServiceItem anItem) {
serviceItem = anItem;
}
}
class MouseReceiver extends MouseAdapter {
private ServiceBrowser.UIDescriptorPopup popup;
private ServiceItem serviceItem;
public MouseReceiver(ServiceItem aServiceItem,
ServiceBrowser.UIDescriptorPopup popup) {
this.popup = popup;
serviceItem = aServiceItem;
}
public void mouseReleased(MouseEvent ev) {
higlightSelection(ev);
if (!ev.isPopupTrigger()) {
return;
}
UIDescriptor selectedDescriptor = getSelectedUIDescriptor();
if (selectedDescriptor == null) {
return;
}
if (!"javax.swing".equals(selectedDescriptor.toolkit)) {
return;
}
popup.setServiceItem(serviceItem);
popup.show(ev.getComponent(), ev.getX(), ev.getY());
}
public void mousePressed(MouseEvent ev) {
higlightSelection(ev);
if (!ev.isPopupTrigger()) {
return;
}
UIDescriptor selectedDescriptor = getSelectedUIDescriptor();
if (selectedDescriptor == null) {
return;
}
if (!"javax.swing".equals(selectedDescriptor.toolkit)) {
return;
}
popup.setServiceItem(serviceItem);
popup.show(ev.getComponent(), ev.getX(), ev.getY());
}
}
private UIDescriptor getSelectedUIDescriptor() {
ObjectNode selectedNode =
(ObjectNode) attrPanel.tree.getLastSelectedPathComponent();
if (selectedNode == null) {
return null;
}
Object selectedObject = selectedNode.getObject();
try {
return (UIDescriptor) selectedObject;
}
catch (ClassCastException e) {
return null;
}
}
private void higlightSelection(MouseEvent anEvent) {
attrPanel.tree.setSelectionPath(attrPanel.tree.getPathForLocation(
anEvent.getX(), anEvent.getY()));
}
private ServiceBrowser.UIDescriptorPopup uiDescriptorPopup() {
return new ServiceBrowser.UIDescriptorPopup();
}
}