bundles/org.eclipse.core.runtime/src/org/eclipse/core/runtime/ILog.java

/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.runtime;

import org.osgi.framework.Bundle;

/**
 * A log to which status events can be written.  Logs appear on individual
 * plug-ins and on the platform itself.  Clients can register log listeners which
 * will receive notification of all log events as the come in.
 * <p>
 * This interface is not intended to be implemented by clients.
 * </p>
 */
public interface ILog {
	/**
	 * Adds the given log listener to this log.  Subsequently the log listener will
	 * receive notification of all log events passing through this log.
	 * This method has no affect if the identical listener is already registered on this log.
	 *
	 * @param listener the listener to add to this log
	 * @see Platform#addLogListener(ILogListener)
	 */
	public void addLogListener(ILogListener listener);

	/**
	 * Returns the plug-in with which this log is associated.
	 * <p>
	 * <b>Note</b>: This is an early access API to the new OSGI-based Eclipse 3.0
	 * Platform Runtime. Because the APIs for the new runtime have not yet been fully
	 * stabilized, they should only be used by clients needing to take particular
	 * advantage of new OSGI-specific functionality, and only then with the understanding
	 * that these APIs may well change in incompatible ways until they reach
	 * their finished, stable form (post-3.0). </p>
	 *
	 * @return the plug-in with which this log is associated
	 * @since 3.0
	 */
	public Bundle getBundle();

	/**
	 * Logs the given status.  The status is distributed to the log listeners
	 * installed on this log and then to the log listeners installed on the platform.
	 *
	 * @param status the status to log
	 */
	public void log(IStatus status);

	/**
	 * Removes the given log listener to this log.  Subsequently the log listener will
	 * no longer receive notification of log events passing through this log.  
	 * This method has no affect if the identical listener is not registered on this log.
	 *
	 * @param listener the listener to remove
	 * @see Platform#removeLogListener(ILogListener)
	 */
	public void removeLogListener(ILogListener listener);
}