package ij;

    /** Plugins that implement this interface are notified when
        an image is opened, closed or updated. The 
        Plugins/Utilities/Monitor Events command uses this interface.
    */
    public interface ImageListener {

    public void imageOpened(ImagePlus imp);

    public void imageClosed(ImagePlus imp);

    public void imageUpdated(ImagePlus imp);
    
    //default void imageSaved(ImagePlus imp) { }

}