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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package net.java.sip.communicator.plugin.update;
import java.util.*;
import net.java.sip.communicator.service.browserlauncher.*;
import net.java.sip.communicator.service.configuration.*;
import net.java.sip.communicator.service.gui.*;
import net.java.sip.communicator.service.shutdown.*;
import net.java.sip.communicator.service.update.UpdateService;
import net.java.sip.communicator.util.*;
import org.osgi.framework.*;
/**
* Implements <tt>BundleActivator</tt> for the update plug-in.
*
* @author Damian Minkov
* @author Lyubomir Marinov
*/
public class UpdateActivator
implements BundleActivator
{
/**
* The <tt>Logger</tt> used by the <tt>UpdateActivator</tt> class and its
* instances for logging output.
*/
private static final Logger logger
= Logger.getLogger(UpdateActivator.class);
/**
* The name of the configuration property which indicates whether the
* checking for updates on application startup is enabled.
*/
private static final String UPDATE_ENABLED
= "net.java.sip.communicator.plugin.updatechecker.ENABLED";
/**
* Reference to the <tt>BrowserLauncherService</tt>.
*/
private static BrowserLauncherService browserLauncher;
/**
* The <tt>BundleContext</tt> in which the one and only
* <tt>UpdateActivator</tt> instance of the update plug-in has been started.
*/
static BundleContext bundleContext;
/**
* Reference to the <tt>ConfigurationService</tt>.
*/
private static ConfigurationService configuration;
/**
* Reference to the <tt>UIService</tt>.
*/
private static UIService uiService;
/**
* The update service.
*/
private static UpdateService updateService;
/**
* Returns the <tt>BrowserLauncherService</tt> obtained from the bundle
* context.
* @return the <tt>BrowserLauncherService</tt> obtained from the bundle
* context
*/
static BrowserLauncherService getBrowserLauncher()
{
if (browserLauncher == null)
{
browserLauncher
= ServiceUtils.getService(
bundleContext,
BrowserLauncherService.class);
}
return browserLauncher;
}
/**
* Returns the <tt>ConfigurationService</tt> obtained from the bundle
* context.
*
* @return the <tt>ConfigurationService</tt> obtained from the bundle
* context
*/
static ConfigurationService getConfiguration()
{
if (configuration == null)
{
configuration
= ServiceUtils.getService(
bundleContext,
ConfigurationService.class);
}
return configuration;
}
/**
* Gets a reference to a <code>ShutdownService</code> implementation
* currently registered in the bundle context of the active
* <code>UpdateCheckActivator</code> instance.
* <p>
* The returned reference to <code>ShutdownService</code> is not being
* cached.
* </p>
*
* @return reference to a <code>ShutdownService</code> implementation
* currently registered in the bundle context of the active
* <code>UpdateCheckActivator</code> instance
*/
static ShutdownService getShutdownService()
{
return ServiceUtils.getService(bundleContext, ShutdownService.class);
}
/**
* Returns a reference to the UIService implementation currently registered
* in the bundle context or null if no such implementation was found.
*
* @return a reference to a UIService implementation currently registered
* in the bundle context or null if no such implementation was found.
*/
static UIService getUIService()
{
if(uiService == null)
uiService = ServiceUtils.getService(bundleContext, UIService.class);
return uiService;
}
/**
* Starts this bundle
*
* @param bundleContext <tt>BundleContext</tt> provided by OSGi framework
* @throws Exception if something goes wrong during start
*/
public void start(BundleContext bundleContext) throws Exception
{
if (logger.isDebugEnabled())
logger.debug("Update checker [STARTED]");
UpdateActivator.bundleContext = bundleContext;
if (OSUtils.IS_WINDOWS)
{
updateService = new Update();
bundleContext.registerService(
UpdateService.class.getName(),
updateService,
null);
// Register the "Check for Updates" menu item.
CheckForUpdatesMenuItemComponent checkForUpdatesMenuItemComponent
= new CheckForUpdatesMenuItemComponent(
Container.CONTAINER_HELP_MENU);
Hashtable<String, String> toolsMenuFilter
= new Hashtable<String, String>();
toolsMenuFilter.put(
Container.CONTAINER_ID,
Container.CONTAINER_HELP_MENU.getID());
bundleContext.registerService(
PluginComponent.class.getName(),
checkForUpdatesMenuItemComponent,
toolsMenuFilter);
// Check for software update upon startup if enabled.
ConfigurationService cfg = getConfiguration();
if(cfg.getBoolean(UPDATE_ENABLED, true))
updateService.checkForUpdates(false);
}
if (logger.isDebugEnabled())
logger.debug("Update checker [REGISTERED]");
}
/**
* Stop the bundle. Nothing to stop for now.
* @param bundleContext <tt>BundleContext</tt> provided by OSGi framework
* @throws Exception if something goes wrong during stop
*/
public void stop(BundleContext bundleContext) throws Exception
{
if (logger.isDebugEnabled())
logger.debug("Update checker [STOPPED]");
}
/**
* Returns the update service instance.
*
* @return the update service instance
*/
static UpdateService getUpdateService()
{
return updateService;
}
}
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