/*
 * Copyright (c) 2007-2012 Eike Stepper (Berlin, Germany) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Eike Stepper - initial API and implementation
 */
package org.eclipse.net4j.util.om;

import org.eclipse.net4j.internal.util.bundle.AbstractPlatform;
import org.eclipse.net4j.util.om.log.OMLogFilter;
import org.eclipse.net4j.util.om.log.OMLogHandler;
import org.eclipse.net4j.util.om.trace.OMTraceHandler;

import java.io.File;
import java.util.Properties;

/**
 * Represents the platform that {@link OMBundle bundles} are deployed into, whether OSGi {@link #isOSGiRunning() is
 * running} or not.
 *
 * @author Eike Stepper
 * @noextend This interface is not intended to be extended by clients.
 * @noimplement This interface is not intended to be implemented by clients.
 * @apiviz.landmark
 * @apiviz.has {@link OMBundle} bundles platform
 * @apiviz.owns {@link org.eclipse.net4j.util.om.log.OMLogHandler} - - logHandlers
 * @apiviz.owns {@link org.eclipse.net4j.util.om.trace.OMTraceHandler} - - traceHandlers
 * @apiviz.has {@link java.io.File} oneway - - stateFolder
 */
public interface OMPlatform
{
  // @Singleton
  public static final OMPlatform INSTANCE = AbstractPlatform.createPlatform();

  public OMBundle bundle(String bundleID, Class<?> accessor);

  public boolean isOSGiRunning();

  /**
   * @since 2.0
   */
  public boolean isExtensionRegistryAvailable();

  public boolean isDebugging();

  public void setDebugging(boolean debugging);

  /**
   * @since 3.2
   */
  public void addLogFilter(OMLogFilter logFilter);

  /**
   * @since 3.2
   */
  public void removeLogFilter(OMLogFilter logFilter);

  public void addLogHandler(OMLogHandler logHandler);

  public void removeLogHandler(OMLogHandler logHandler);

  public void addTraceHandler(OMTraceHandler traceHandler);

  public void removeTraceHandler(OMTraceHandler traceHandler);

  public File getStateFolder();

  public File getConfigFolder();

  public File getConfigFile(String name);

  public Properties getConfigProperties(String name);

  /**
   * @since 3.0
   */
  public String getProperty(String key);

  /**
   * @since 3.0
   */
  public String getProperty(String key, String defaultValue);

  /**
   * @since 3.2
   */
  public String[] getCommandLineArgs() throws IllegalStateException;
}