@@ -0,0 +1,2504 @@
+/*%0A * #%25L%0A * ImageJ software for multidimensional image processing and analysis.%0A * %25%25%0A * Copyright (C) 2009 - 2014 Board of Regents of the University of%0A * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck%0A * Institute of Molecular Cell Biology and Genetics.%0A * %25%25%0A * Redistribution and use in source and binary forms, with or without%0A * modification, are permitted provided that the following conditions are met:%0A * %0A * 1. Redistributions of source code must retain the above copyright notice,%0A *    this list of conditions and the following disclaimer.%0A * 2. Redistributions in binary form must reproduce the above copyright notice,%0A *    this list of conditions and the following disclaimer in the documentation%0A *    and/or other materials provided with the distribution.%0A * %0A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS %22AS IS%22%0A * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE%0A * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE%0A * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE%0A * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR%0A * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF%0A * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS%0A * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN%0A * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)%0A * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE%0A * POSSIBILITY OF SUCH DAMAGE.%0A * #L%25%0A */%0A%0Apackage imagej.module.process;%0A%0Aimport imagej.module.Module;%0Aimport imagej.module.ModuleItem;%0Aimport imagej.widget.InputHarvester;%0A%0Aimport org.scijava.log.LogService;%0Aimport org.scijava.plugin.Parameter;%0Aimport org.scijava.plugin.Plugin;%0A%0A/**%0A * A preprocessor plugin that does a final check of input parameters,%0A * complaining if any required ones are null.%0A * %0A * @author Curtis Rueden%0A */%0A@Plugin(type = PreprocessorPlugin.class,%0A%09priority = InputHarvester.PRIORITY - 1)%0Apublic class CheckInputsPreprocessor extends AbstractPreprocessorPlugin %7B%0A%0A%09@Parameter(required = false)%0A%09private LogService log;%0A%0A%09// -- ModuleProcessor methods --%0A%0A%09@Override%0A%09public void process(final Module module) %7B%0A%09%09for (final ModuleItem%3C?%3E input : module.getInfo().inputs()) %7B%0A%09%09%09if (input.isRequired() && input.getValue(module) == null) %7B%0A%09%09%09%09cancel(%22'%22 + input.getName() + %22' is required but unset.%22);%0A%09%09%09%7D%0A%09%09%7D%0A%09%7D%0A%0A%7D%0A

Add preprocessor which cancels on null inputs