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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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/*
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 * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
 * Institute of Molecular Cell Biology and Genetics.
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 *    this list of conditions and the following disclaimer.
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package org.scijava.ui;

/**
 * Interface for UI components that require the user to deal with changed state
 * before the component can be closed. The {@link #confirmClose()} method should
 * 
 * For example, a text editor that monitors unsaved changes would implement this
 * interface. Its {@code confirmClose} method would, if unsaved changes exist,
 * ask the user if they would like to save said changes, e.g. with a
 * {@code Yes-No-Cancel} dialog. The method would return {@code true} if
 * {@code Yes} or {@code No} was selected in this case, and {@code false} if
 * {@code Cancel}ed.
 * 
 *
 * @author Mark Hiner
 */
public interface CloseConfirmable {

	/**
	 * @return {@code true} if the current close operation should continue.
	 */
	boolean confirmClose();
}