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SciJava Common is a shared library for SciJava software. It provides a plugin framework, with an extensible mechanism for service discovery, backed by its own annotation processor, so that plugins can be loaded dynamically. It is used by downstream projects in the SciJava ecosystem, such as ImageJ and SCIFIO.

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/*
 * #%L
 * SciJava Common shared library for SciJava software.
 * %%
 * Copyright (C) 2009 - 2014 Board of Regents of the University of
 * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
 * Institute of Molecular Cell Biology and Genetics.
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * #L%
 */

package org.scijava.app;

import org.scijava.app.event.StatusEvent;
import org.scijava.service.SciJavaService;

/**
 * Interface for the status notification service.
 * 
 * @author Curtis Rueden
 */
public interface StatusService extends SciJavaService {

	/** Updates the progress bar. */
	void showProgress(int value, int maximum);

	/** Updates the status message. */
	void showStatus(String message);

	/** Updates the status message and progress bar. */
	void showStatus(int progress, int maximum, String message);

	/**
	 * Updates the status message and progress bar, optionally flagging the status
	 * notification as a warning.
	 * 
	 * @param progress New progress value
	 * @param maximum New progress maximum
	 * @param message New status message
	 * @param warn Whether or not this notification constitutes a warning
	 */
	void showStatus(int progress, int maximum, String message, boolean warn);

	/** Issues a warning message. */
	void warn(String message);

	/** Clears the status message. */
	void clearStatus();

	/**
	 * Gets the status message of the given event. In the case of the empty string
	 * (""), an alternative default string will be returned instead using the
	 * application version of the given application.
	 * 
	 * @see StatusEvent#getStatusMessage()
	 * @see App#getInfo(boolean)
	 */
	String getStatusMessage(String appName, StatusEvent statusEvent);

}