org.scijava.ui.dnd.DragAndDropData Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of scijava-common Show documentation

SciJava Common is a shared library for SciJava software. It provides a plugin framework, with an extensible mechanism for service discovery, backed by its own annotation processor, so that plugins can be loaded dynamically. It is used by downstream projects in the SciJava ecosystem, such as ImageJ and SCIFIO.

There is a newer version: 2.99.0

Show newest version

/*
 * #%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.dnd;

import java.util.List;

import org.scijava.ui.dnd.event.DragEnterEvent;
import org.scijava.ui.dnd.event.DropEvent;

/**
 * Interface for drag-and-drop data.
 * 
 * @author Curtis Rueden
 */
public interface DragAndDropData {

	/**
	 * Gets whether the data can be provided as an object with the given MIME
	 * type.
	 */
	boolean isSupported(MIMEType mimeType);

	/**
	 * Gets whether the data can be provided as an object of the given Java class.
	 */
	boolean isSupported(Class type);

	/**
	 * Gets the data with respect to the given MIME type.
	 * 
	 * @return The data object for the given MIME type. May return null if the
	 *         data is requested too early in the drag-and-drop process, such as
	 *         during a {@link DragEnterEvent} rather than a {@link DropEvent}.
	 * @throws IllegalArgumentException if the MIME type is not supported.
	 */
	Object getData(MIMEType mimeType);

	/** Gets the data as an object of the given Java class. */
	 T getData(Class type);

	/** Gets the best supported MIME type matching the given Java class. */
	MIMEType getMIMEType(Class type);

	/** Gets the list of supported MIME types. */
	List getMIMETypes();

}