/*
* Copyright (c) 2003-2008, KNOPFLERFISH project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* - Neither the name of the KNOPFLERFISH project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.knopflerfish.bundle.desktop.swing.console;
import java.io.IOException;
import java.io.PrintWriter;
import javax.swing.JComponent;
import javax.swing.JLabel;
import org.knopflerfish.service.console.ConsoleService;
import org.knopflerfish.service.console.Session;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.log.LogService;
import org.osgi.util.tracker.ServiceTracker;
import org.osgi.util.tracker.ServiceTrackerCustomizer;
public class ConsoleSwing
implements org.osgi.util.tracker.ServiceTrackerCustomizer
{
final static private String logServiceName = LogService.class.getName();
final static private String consoleServiceName = ConsoleService.class.getName();
static ConsoleSwing theConsoleSwing;
static BundleContext bc = null;
static Config config = new Config();
public static SwingIO swingIO = null;
ServiceTracker consoleTracker;
ConsoleService consoleService = null;
Session consoleSession = null;
public ConsoleSwing(BundleContext bc) {
this.bc = bc;
this.theConsoleSwing = this;
// Set up service tracker for the console service.
consoleTracker = new ServiceTracker(bc, consoleServiceName, this);
}
public void start() {
log(LogService.LOG_INFO, "Starting");
swingIO = new SwingIO();
swingIO.start();
swingIO.disableInput("No Console Service Available.");
consoleTracker.open();
}
public void clearConsole() {
if(swingIO != null) {
swingIO.clear();
}
}
void close() {
closeSession();
closeSwing();
}
JComponent fallBack = null;
public JComponent getJComponent() {
if(swingIO != null) {
return swingIO;
} else {
if(fallBack == null) {
fallBack = new JLabel("No console available");
}
return fallBack;
}
}
static void reinit() {
if(swingIO != null) {
swingIO.reinit();
}
}
public synchronized void stop() {
log(LogService.LOG_INFO, "Stopping");
consoleTracker.close();
close();
this.bc = null;
}
void closeSwing() {
if(swingIO != null) {
swingIO.stop();
swingIO = null;
}
System.out.println("Swing console closed");
}
void closeSession() {
if (consoleSession != null) {
try {
consoleSession.close();
consoleSession = null;
} catch(Exception e) {
log(LogService.LOG_WARNING, "session close failed", e);
}
}
}
/*------------------------------------------------------------------------*
* ServiceTrackerCustomizer implementation
*------------------------------------------------------------------------*/
public Object addingService(ServiceReference reference) {
if (null==consoleService) {
log(LogService.LOG_INFO, "New console service selected.");
consoleService = (ConsoleService) bc.getService(reference);
if (swingIO==null) swingIO = new SwingIO();
if(consoleService != null) {
try {
swingIO.start();
consoleSession =
consoleService.runSession("ConsoleSwing",
swingIO.in,
new PrintWriter(swingIO.out));
} catch (IOException ioe) {
swingIO.disableInput("No Console Service Available.");
log(LogService.LOG_ERROR, "Failed to start console session");
}
} else {
swingIO.disableInput("No Console Service Available.");
log(LogService.LOG_WARNING, "No console service - skipping session");
}
return consoleService;
} else {
return null;
}
}
public void modifiedService(ServiceReference reference, Object service) {
}
public void removedService(ServiceReference reference, Object service) {
if (consoleService == service) {
if (null!=consoleSession) {
log(LogService.LOG_INFO, "Console service closed.");
closeSession();
swingIO.disableInput("No Console Service Available.");
}
consoleService = null;
}
}
public static void log(int level, String msg) {
log(level, msg, null);
}
public static void log(int level, String msg, Exception e) {
ServiceReference srLog = bc.getServiceReference(logServiceName);
if (srLog != null) {
LogService sLog = (LogService)bc.getService(srLog);
if (sLog != null) {
if(e != null) {
sLog.log(level, msg, e);
} else {
sLog.log(level, msg);
}
}
bc.ungetService(srLog);
}
}
}