TextDisplayViewer: move default method impl to iface

Author: ctrueden

src/main/java/org/scijava/ui/viewer/text/AbstractTextDisplayViewer.java

@@ -31,7 +31,6 @@
 
 package org.scijava.ui.viewer.text;
 
-import org.scijava.display.Display;
 import org.scijava.display.TextDisplay;
 import org.scijava.ui.viewer.AbstractDisplayViewer;
 
@@ -44,14 +43,8 @@ public abstract class AbstractTextDisplayViewer extends
 	AbstractDisplayViewer<String>
 {
 
-	@Override
-	public boolean canView(final Display<?> d) {
-		return d instanceof TextDisplay;
-	}
-
 	@Override
 	public TextDisplay getDisplay() {
 		return (TextDisplay) super.getDisplay();
 	}
-
 }

src/main/java/org/scijava/ui/viewer/text/TextDisplayViewer.java

@@ -31,6 +31,7 @@
 
 package org.scijava.ui.viewer.text;
 
+import org.scijava.display.Display;
 import org.scijava.display.TextDisplay;
 import org.scijava.ui.viewer.DisplayViewer;
 
@@ -44,4 +45,10 @@ public interface TextDisplayViewer extends DisplayViewer<String> {
 	@Override
 	TextDisplay getDisplay();
 
+	// -- DisplayViewer methods --
+
+	@Override
+	default boolean canView(final Display<?> d) {
+		return d instanceof TextDisplay;
+	}
 }