/*
 * #%L
 * ImageJ software for multidimensional image processing and analysis.
 * %%
 * Copyright (C) 2009 - 2013 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.
 * %%
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 * 
 * 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
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * POSSIBILITY OF SUCH DAMAGE.
 * 
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 * those of the authors and should not be interpreted as representing official
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 */

package imagej.ui.console;

import imagej.console.AbstractConsoleArgument;
import imagej.console.ConsoleArgument;
import imagej.ui.UIService;
import imagej.ui.UserInterface;

import java.util.LinkedList;

import org.scijava.log.LogService;
import org.scijava.plugin.Parameter;
import org.scijava.plugin.Plugin;

/**
 * Handles the {@code --ui} command line argument.
 * 
 * @author Curtis Rueden
 */
@Plugin(type = ConsoleArgument.class)
public class UIArgument extends AbstractConsoleArgument {

	@Parameter
	private UIService uiService;

	@Parameter
	private LogService log;

	// -- ConsoleArgument methods --

	@Override
	public void handle(final LinkedList<String> args) {
		if (!supports(args)) return;

		args.removeFirst(); // --ui
		final String uiName = args.removeFirst();

			final UserInterface ui = uiService.getUI(uiName);
			if (ui == null) {
				log.error("No such UI: " + uiName);
			}
			else {
				uiService.setDefaultUI(ui);
			}
	}

	// -- Typed methods --

	@Override
	public boolean supports(final LinkedList<String> args) {
		return args != null && args.size() >= 2 && args.getFirst().equals("--ui");
	}

}

Add --ui command line argument