src/macosx/classes/com/apple/eawt/QuitHandler.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * accompanied this code).
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package com.apple.eawt;

import com.apple.eawt.AppEvent.QuitEvent;

/**
 * An implementor determines if requests to quit this application should proceed or cancel.
 *
 * @see Application#setQuitHandler(QuitHandler)
 * @see Application#setQuitStrategy(QuitStrategy)
 *
 * @since Java for Mac OS X 10.6 Update 3
 * @since Java for Mac OS X 10.5 Update 8
 */
public interface QuitHandler {
    /**
     * Invoked when the application is asked to quit.
     *
     * Implementors must call either {@link QuitResponse#cancelQuit()}, {@link QuitResponse#performQuit()}, or ensure the application terminates.
     * The process (or log-out) requesting this app to quit will be blocked until the {@link QuitResponse} is handled.
     * Apps that require complex UI to shutdown may call the {@link QuitResponse} from any thread.
     * Your app may be asked to quit multiple times before you have responded to the initial request.
     * This handler is called each time a quit is requested, and the same {@link QuitResponse} object is passed until it is handled.
     * Once used, the {@link QuitResponse} cannot be used again to change the decision.
     *
     * @param e the request to quit this application.
     * @param response the one-shot response object used to cancel or proceed with the quit action.
     */
    public void handleQuitRequestWith(final QuitEvent e, final QuitResponse response);
}