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HeadlessUI.java
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HeadlessUI.java
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/*-
* #%L
* SciJava Common shared library for SciJava software.
* %%
* Copyright (C) 2009 - 2016 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.
* #L%
*/
package org.scijava.ui.headless;
import java.io.File;
import org.scijava.Priority;
import org.scijava.display.Display;
import org.scijava.log.LogService;
import org.scijava.plugin.AbstractRichPlugin;
import org.scijava.plugin.Plugin;
import org.scijava.ui.DialogPrompt;
import org.scijava.ui.UserInterface;
import org.scijava.ui.viewer.DisplayWindow;
import org.scijava.util.ListUtils;
/**
* A no-op user interface used when the application is running headless.
* <p>
* Most operations do nothing. Attempting to show an object via one of the
* {@link #show} methods logs the object via the {@link LogService}.
* </p>
*
* @author Richard Domander (Royal Veterinary College, London)
* @author Curtis Rueden
*/
@Plugin(type = UserInterface.class, name = HeadlessUI.NAME,
priority = Priority.VERY_LOW_PRIORITY)
public class HeadlessUI extends AbstractRichPlugin implements UserInterface {
public static final String NAME = "headless";
private boolean visible;
@Override
public void show() {
visible = true;
}
@Override
public boolean isVisible() {
return visible;
}
@Override
public void show(final String name, final Object o) {
// NB: Rather than creating a Display, let's just log it.
log().info(name + " = " + o);
}
@Override
public void show(final Display<?> display) {
// NB: Rather than looking for a DisplayViewer, let's just log it.
log().info(display.getName() + " = " + ListUtils.string(display, false));
}
@Override
public DisplayWindow createDisplayWindow(final Display<?> display) {
return null;
}
@Override
public DialogPrompt dialogPrompt(final String message, final String title,
final DialogPrompt.MessageType messageType,
final DialogPrompt.OptionType optionType)
{
return null;
}
@Override
public File chooseFile(final String title, final File file,
final String style)
{
return null;
}
@Override
public void showContextMenu(final String menuRoot, final Display<?> display,
final int x, final int y)
{}
@Override
public void saveLocation() {}
@Override
public void restoreLocation() {}
@Override
public boolean requiresEDT() {
return false;
}
@Override
public void dispose() {}
}