/*
 * JBoss, Home of Professional Open Source
 * Copyright 2013, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.richfaces.wait;

import java.text.MessageFormat;

/**
 * Indicates timeout of waiting.
 */
public class WaitTimeoutException extends RuntimeException {
    private static final long serialVersionUID = 6056785264760499779L;

    // failure subject - cannot be null after construction
    private Object failure;

    public WaitTimeoutException(Exception exception) {
        if (exception != null) {
            failure = exception;
        }
    }

    public WaitTimeoutException(CharSequence message, Object... args) {
        if (args != null) {
            failure = MessageFormat.format(message.toString(), args);
        } else {
            failure = message.toString();
        }
    }

    @Override
    public Throwable getCause() {
        if (failure instanceof Exception) {
            return (Exception) failure;
        }

        return super.getCause();
    }

    @Override
    public String getMessage() {
        if (failure instanceof Exception) {
            return ((Exception) failure).getMessage();
        }
        return failure.toString();
    }
}