Copyright (c) 2006, 2018 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
/*******************************************************************************
 * Copyright (c) 2006, 2018 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.debug.internal.core;

import java.util.Hashtable;

import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.osgi.service.debug.DebugOptionsListener;
import org.eclipse.osgi.service.debug.DebugTrace;
import org.osgi.framework.BundleContext;

Access to debug options.
Since:
3.3/**
 * Access to debug options.
 *
 * @since 3.3
 */
public class DebugOptions implements DebugOptionsListener {

	// debug option flags
	public static boolean DEBUG = false;
	public static boolean DEBUG_COMMANDS = false;
	public static boolean DEBUG_EVENTS = false;

	static final String DEBUG_FLAG = "org.eclipse.debug.core/debug"; //$NON-NLS-1$
	static final String DEBUG_FLAG_COMMANDS = "org.eclipse.debug.core/debug/commands"; //$NON-NLS-1$
	static final String DEBUG_FLAG_EVENTS = "org.eclipse.debug.core/debug/events"; //$NON-NLS-1$

	
The DebugTrace object to print to OSGi tracing 
Since:
3.8/**
	 * The {@link DebugTrace} object to print to OSGi tracing
	 * @since 3.8
	 */
	private static DebugTrace fgDebugTrace;

	
Constructor
Params:
context – the bundle context/**
	 * Constructor
	 * @param context the bundle context
	 */
	public DebugOptions(BundleContext context) {
		Hashtable<String, String> props = new Hashtable<>(2);
		props.put(org.eclipse.osgi.service.debug.DebugOptions.LISTENER_SYMBOLICNAME, DebugPlugin.getUniqueIdentifier());
		context.registerService(DebugOptionsListener.class.getName(), this, props);
	}

	@Override
	public void optionsChanged(org.eclipse.osgi.service.debug.DebugOptions options) {
		fgDebugTrace = options.newDebugTrace(DebugPlugin.getUniqueIdentifier());
		DEBUG = options.getBooleanOption(DEBUG_FLAG, false);
		DEBUG_COMMANDS = DEBUG & options.getBooleanOption(DEBUG_FLAG_COMMANDS, false);
		DEBUG_EVENTS = DEBUG & options.getBooleanOption(DEBUG_FLAG_EVENTS, false);
	}

	
Prints the given message to System.out and to the OSGi tracing (if started)
Params:
option – the option or null
message – the message to print or null
throwable – the Throwable or null
Since:
3.8/**
	 * Prints the given message to System.out and to the OSGi tracing (if started)
	 * @param option the option or <code>null</code>
	 * @param message the message to print or <code>null</code>
	 * @param throwable the {@link Throwable} or <code>null</code>
	 * @since 3.8
	 */
	public static void trace(String option, String message, Throwable throwable) {
		System.out.println(message);
		if(fgDebugTrace != null) {
			fgDebugTrace.trace(option, message, throwable);
		}
	}

	
Prints the given message to System.out and to the OSGi tracing (if enabled)
Params:
message – the message or null
Since:
3.8/**
	 * Prints the given message to System.out and to the OSGi tracing (if enabled)
	 *
	 * @param message the message or <code>null</code>
	 * @since 3.8
	 */
	public static void trace(String message) {
		trace(null, message, null);
	}
}