/*
 * #%L
 * ImageJ software for multidimensional image processing and analysis.
 * %%
 * Copyright (C) 2009 - 2012 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.
 * 
 * The views and conclusions contained in the software and documentation are
 * those of the authors and should not be interpreted as representing official
 * policies, either expressed or implied, of any organization.
 * #L%
 */

package imagej.ui;

import imagej.Priority;
import imagej.ext.plugin.Plugin;
import imagej.module.Module;
import imagej.module.ModuleItem;
import imagej.plugin.AbstractPreprocessorPlugin;
import imagej.plugin.PreprocessorPlugin;

/**
 * The UI preprocessor automatically populates module {@link UserInterface}
 * inputs with the {@link UIService}'s default UI instance, if compatible.
 * 
 * @author Curtis Rueden
 */
@Plugin(type = PreprocessorPlugin.class, priority = Priority.VERY_HIGH_PRIORITY)
public class UIPreprocessor extends AbstractPreprocessorPlugin {

	// -- ModuleProcessor methods --

	@Override
	public void process(final Module module) {
		final UIService uiService = getContext().getService(UIService.class);
		if (uiService == null) return; // no UI service available

		final UserInterface ui = uiService.getDefaultUI();
		for (final ModuleItem<?> input : module.getInfo().inputs()) {
			if (!input.isAutoFill()) continue; // cannot auto-fill this input
			final Class<?> type = input.getType();
			if (type.isAssignableFrom(ui.getClass())) {
				// input is a compatible UI
				final String name = input.getName();
				module.setInput(name, ui);
				module.setResolved(name, true);
			}
		}
	}

}

Add preprocessor that auto-fills UserInterfaces
Add preprocessor that auto-fills UserInterfaces
