WidgetService: add createModel method

This lets us make the creation of WidgetModel objects extensible.

Author: ctrueden

src/main/java/org/scijava/widget/DefaultWidgetService.java

@@ -31,7 +31,11 @@
 
 package org.scijava.widget;
 
+import java.util.List;
+
 import org.scijava.log.LogService;
+import org.scijava.module.Module;
+import org.scijava.module.ModuleItem;
 import org.scijava.plugin.AbstractWrapperService;
 import org.scijava.plugin.Parameter;
 import org.scijava.plugin.Plugin;
@@ -52,6 +56,16 @@ public class DefaultWidgetService extends
 	@Parameter
 	private LogService log;
 
+	// -- WidgetService methods --
+
+	@Override
+	public WidgetModel createModel(InputPanel<?, ?> inputPanel, Module module,
+		ModuleItem<?> item, List<?> objectPool)
+	{
+		return new DefaultWidgetModel(getContext(), inputPanel, module, item,
+			objectPool);
+	}
+
 	// -- WrapperService methods --
 
 	@Override

src/main/java/org/scijava/widget/WidgetService.java

@@ -31,6 +31,10 @@
 
 package org.scijava.widget;
 
+import java.util.List;
+
+import org.scijava.module.Module;
+import org.scijava.module.ModuleItem;
 import org.scijava.plugin.WrapperService;
 import org.scijava.service.SciJavaService;
 
@@ -51,4 +55,15 @@ public interface WidgetService extends
 	@Override
 	InputWidget<?, ?> create(WidgetModel model);
 
+	/**
+	 * Create a {@link WidgetModel} for the given module input.
+	 * 
+	 * @param inputPanel
+	 * @param module
+	 * @param item
+	 * @param objectPool
+	 */
+	WidgetModel createModel(InputPanel<?, ?> inputPanel, Module module,
+		ModuleItem<?> item, List<?> objectPool);
+
 }