org.scijava.widget.InputHarvester 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 both 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.widget;

import org.scijava.Priority;
import org.scijava.module.Module;
import org.scijava.module.ModuleException;

/**
 * An input harvester collects {@link Module} input values, according to the
 * following steps:
 * 
 * Create an {@link InputPanel} with widgets corresponding to the module
 * inputs.
 * Present the panel, if in a UI context.
 * Harvest the final widget values from the panel, updating the
 * {@link Module}'s input values to match the harvested values.
 * Perform any other needed processing of the results (marking inputs as
 * resolved, storing persisted values to preferences, etc.).
 * 
 * 
 * @author Curtis Rueden
 * @param  The type of UI component housing the input panel itself.
 * @param  The type of UI component housing each input widget.
 */
public interface InputHarvester {

	double PRIORITY = Priority.VERY_LOW_PRIORITY;

	/**
	 * Performs the harvesting process.
	 * 
	 * @param module The module whose inputs should be harvest.
	 * @throws ModuleException If the process goes wrong, or is canceled.
	 */
	void harvest(Module module) throws ModuleException;

	/**
	 * Constructs an empty {@link InputPanel}. Widgets are added later using the
	 * {@link #buildPanel} method.
	 */
	InputPanel createInputPanel();

	/**
	 * Populates the given {@link InputPanel} with widgets corresponding to the
	 * given {@link Module} instance.
	 * 
	 * @param inputPanel The panel to populate.
	 * @param module The module whose inputs should be translated into widgets.
	 * @throws ModuleException if the panel cannot be populated for some reason.
	 *           This may occur due to an input of unsupported type.
	 */
	void buildPanel(InputPanel inputPanel, Module module)
		throws ModuleException;

	/**
	 * Gathers input values from the user or other source. For example, a
	 * graphical user interface could present a dialog box.
	 */
	boolean harvestInputs(InputPanel inputPanel, Module module);

	/** Does any needed processing, after input values have been harvested. */
	void processResults(InputPanel inputPanel, Module module)
		throws ModuleException;

}