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/*******************************************************************************
* Copyright (c) 2010, 2011 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.bidi.internal;
import java.util.Locale;
import org.eclipse.osgi.framework.log.FrameworkLog;
import org.eclipse.osgi.framework.log.FrameworkLogEntry;
import org.eclipse.osgi.service.localization.LocaleProvider;
import org.osgi.framework.*;
import org.osgi.util.tracker.ServiceTracker;
/**
* Provides services related to OSGi bundles.
*/
public class StructuredTextActivator implements BundleActivator {
private ServiceTracker logTracker = null;
private BundleContext bundleContext;
private static StructuredTextActivator instance;
public StructuredTextActivator() {
instance = this; // there is only one bundle activator
}
public void start(BundleContext context) throws Exception {
bundleContext = context;
instance = this;
}
public void stop(BundleContext context) throws Exception {
if (logTracker != null) {
logTracker.close();
logTracker = null;
}
bundleContext = null;
}
/**
* @return the bundle instance, or <code>null</code> iff OSGi is not running
*/
public static StructuredTextActivator getInstance() {
return instance;
}
/**
* Returns the value of the specified property. If OSGi is not running or the key is not found in
* the Framework properties, the system properties are then searched.
* <p>
* This method can be used without OSGi running.
* </p>
*
* @param key the name of the requested property
* @return the value of the requested property, or {@code null} if the property is undefined
*/
public static String getProperty(String key) {
if (instance != null)
return instance.bundleContext.getProperty(key);
return System.getProperty(key);
}
public Locale getDefaultLocale() {
// use OSGi service
ServiceReference[] references = null;
try {
references = bundleContext.getAllServiceReferences(null, LocaleProvider.class.getName());
} catch (InvalidSyntaxException e) {
// do nothing
}
if (references == null || references.length < 1)
return Locale.getDefault();
Object service = bundleContext.getService(references[0]);
LocaleProvider localeProvider = (LocaleProvider) service;
if (localeProvider != null) {
Locale currentLocale = localeProvider.getLocale();
bundleContext.ungetService(references[0]);
if (currentLocale != null)
return currentLocale;
}
return Locale.getDefault();
}
private FrameworkLog getFrameworkLog() {
if (logTracker == null) {
logTracker = new ServiceTracker(bundleContext, FrameworkLog.class.getName(), null);
logTracker.open();
}
return (FrameworkLog) logTracker.getService();
}
static public void logError(String message, Exception e) {
if (instance != null) {
FrameworkLog frameworkLog = instance.getFrameworkLog();
if (frameworkLog != null) {
frameworkLog.log(new FrameworkLogEntry("org.eclipse.equinox.bidi", FrameworkLogEntry.ERROR, 1, message, 0, e, null)); //$NON-NLS-1$
return;
}
}
System.err.println(message);
if (e != null)
e.printStackTrace();
}
}
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