TextFormat: push default method impls to iface

Thank you Java 8.

Author: ctrueden

src/main/java/org/scijava/text/AbstractTextFormat.java

@@ -34,7 +34,6 @@
 import java.io.File;
 
 import org.scijava.plugin.AbstractHandlerPlugin;
-import org.scijava.util.FileUtils;
 
 /**
  * Abstract superclass of {@link TextFormat} implementations.
@@ -44,20 +43,5 @@
 public abstract class AbstractTextFormat extends AbstractHandlerPlugin<File>
 	implements TextFormat
 {
-
-	// -- Typed methods --
-
-	@Override
-	public boolean supports(final File file) {
-		for (final String ext : getExtensions()) {
-			if (FileUtils.getExtension(file).equalsIgnoreCase(ext)) return true;
-		}
-		return false;
-	}
-
-	@Override
-	public Class<File> getType() {
-		return File.class;
-	}
-
+	// NB: No implementation needed.
 }

src/main/java/org/scijava/text/TextFormat.java

@@ -36,6 +36,7 @@
 
 import org.scijava.plugin.HandlerPlugin;
 import org.scijava.plugin.Plugin;
+import org.scijava.util.FileUtils;
 
 /**
  * {@code TextFormat} is a plugin that provides handling for a text markup
@@ -60,4 +61,19 @@ public interface TextFormat extends HandlerPlugin<File> {
 	/** Expresses the given text string in HTML format. */
 	String asHTML(String text);
 
+	// -- Typed methods --
+
+	@Override
+	default boolean supports(final File file) {
+		for (final String ext : getExtensions()) {
+			if (FileUtils.getExtension(file).equalsIgnoreCase(ext)) return true;
+		}
+		return false;
+	}
+
+	@Override
+	default Class<File> getType() {
+		return File.class;
+	}
+
 }