InputPanel: move default method impls to iface

Author: ctrueden

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

@@ -49,14 +49,6 @@ public abstract class AbstractInputPanel<P, W> implements InputPanel<P, W> {
 
 	// -- InputPanel methods --
 
-	@Override
-	public boolean supports(final InputWidget<?, ?> widget) {
-		// verify this panel's widget type matches that of the given widget
-		final Class<?> thisType = getWidgetComponentType();
-		final Class<?> thatType = widget.getComponentType();
-		return thisType.isAssignableFrom(thatType);
-	}
-
 	@Override
 	public void addWidget(final InputWidget<?, W> widget) {
 		widgets.put(widget.get().getItem().getName(), widget);

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

@@ -44,7 +44,12 @@ public interface InputPanel<P, W> extends UIComponent<P> {
 	// TODO - groups of fields
 
 	/** Gets whether the given widget would be appropriate for the given panel. */
-	boolean supports(InputWidget<?, ?> widget);
+	default boolean supports(final InputWidget<?, ?> widget) {
+		// verify this panel's widget type matches that of the given widget
+		final Class<?> thisType = getWidgetComponentType();
+		final Class<?> thatType = widget.getComponentType();
+		return thisType.isAssignableFrom(thatType);
+	}
 
 	/** Adds a widget to the panel. */
 	void addWidget(InputWidget<?, W> widget);