/*
 * #%L
 * ImageJ2 software for multidimensional image processing and analysis.
 * %%
 * Copyright (C) 2009 - 2022 ImageJ2 developers.
 * %%
 * 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.
 * #L%
 */

package net.imagej.display.process;

import net.imagej.Dataset;
import net.imagej.display.ImageDisplayService;

import org.scijava.Priority;
import org.scijava.module.process.PreprocessorPlugin;
import org.scijava.plugin.Parameter;
import org.scijava.plugin.Plugin;

/**
 * Fills single, unresolved module inputs with the active active
 * {@link Dataset}. Hence, rather than a dialog prompting the user to - *
 * manually select an input, the active {@link Dataset} is used automatically. -
 * *
 * <p>
 * - * In the case of more than one compatible parameter, the active - *
 * {@link Dataset} is not used and instead the user must select. This behavior -
 * * is consistent with ImageJ v1.x. - *
 * </p>
 * 
 * @author Curtis Rueden
 * @author Mark Hiner hinerm at gmail.com
 */
@Plugin(type = PreprocessorPlugin.class, priority = Priority.VERY_HIGH_PRIORITY)
public class ActiveDatasetPreprocessor extends SingleInputPreprocessor<Dataset>
{

	@Parameter(required = false)
	private ImageDisplayService imageDisplayService;

	public ActiveDatasetPreprocessor() {
		super(Dataset.class);
	}

	// -- SingleInputProcessor methods --

	@Override
	public Dataset getValue() {
		if (imageDisplayService == null) return null;
		return imageDisplayService.getActiveDataset();
	}

}

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fix javadoc formatting