/*******************************************************************************
 * Copyright (c) 2004, 2007 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *     Chris Gross (schtoo@schtoo.com) - support for ILogger added
 *       (bug 49497 [RCP] JFace dependency on org.eclipse.core.runtime enlarges standalone JFace applications)
 *     Brad Reynolds - bug 164653
 *     Tom Schindl <tom.schindl@bestsolution.at> - bug 194587
 *******************************************************************************/
module org.eclipse.core.databinding.util.Policy;

import java.lang.all;

import org.eclipse.core.runtime.IStatus;

/**
 * The Policy class handles settings for behaviour, debug flags and logging
 * within JFace Data Binding.
 * 
 * @since 1.1
 */
public class Policy {

    /**
     * Constant for the the default setting for debug options.
     */
    public static final bool DEFAULT = false;

    /**
     * The unique identifier of the JFace plug-in.
     */
    public static final String JFACE_DATABINDING = "org.eclipse.core.databinding";//$NON-NLS-1$

    private static ILogger log;

    /**
     * Returns the dummy log to use if none has been set
     */
    private static ILogger getDummyLog() {
        return new class() ILogger {
            public void log(IStatus status) {
                System.err.println(status.getPlugin() + " - " + status.getCode() + " - " + status.getMessage());  //$NON-NLS-1$//$NON-NLS-2$
                if( status.getException() !is null ) {
                    status.getException().printStackTrace(System.err);
                }
            }
        };
    }

    /**
     * Sets the logger used by JFace Data Binding to log errors.
     * 
     * @param logger
     *            the logger to use, or <code>null</code> to use the default
     *            logger
     */
    public static synchronized void setLog(ILogger logger) {
        log = logger;
    }

    /**
     * Returns the logger used by JFace Data Binding to log errors.
     * <p>
     * The default logger prints the status to <code>System.err</code>.
     * </p>
     * 
     * @return the logger
     */
    public static synchronized ILogger getLog() {
        if (log is null) {
            log = getDummyLog();
        }
        return log;
    }

}