Updated UICompleter method signature and tests

ui/api/src/main/java/org/jboss/forge/ui/UICompleter.java

@@ -6,15 +6,19 @@
  */
 package org.jboss.forge.ui;
 
-import java.util.List;
-
 /**
  * @param VALUETYPE The value type to be provided by completion.
  * @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
  */
-public interface UICompleter<VALUETYPE>
+public interface UICompleter<T>
 {
-   // FIXME this needs to be thought out, before or after validation?
-   // Should this take a String or the actual VALUETYPE instead?
-   List<VALUETYPE> getCompletionProposals(String value);
+   /**
+    * Get completion proposals for the provided {@link UIInput} and unconverted partial {@link String} value.
+    * 
+    * @param input The {@link UIInput} that provided this {@link UICompleter} instance, via
+    *           {@link UIInput#getCompleter()}.
+    * @param value The user input value requiring completion, or null, if no value yet exists. These values will undergo
+    *           conversion to fit the type required by the corresponding {@link UIInput}.
+    */
+   Iterable<String> getCompletionProposals(UIInput<T> input, String value);
 }

ui/impl/src/main/java/org/jboss/forge/ui/impl/NoopCompleter.java

@@ -6,10 +6,10 @@
  */
 package org.jboss.forge.ui.impl;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.Collections;
 
 import org.jboss.forge.ui.UICompleter;
+import org.jboss.forge.ui.UIInput;
 
 /**
  * A {@link UICompleter} that always returns zero proposals.
@@ -20,8 +20,8 @@
 public class NoopCompleter implements UICompleter
 {
    @Override
-   public List getCompletionProposals(String value)
+   public Iterable getCompletionProposals(UIInput input, String value)
    {
-      return new ArrayList();
+      return Collections.emptyList();
    }
 }

ui/tests/src/test/java/org/jboss/forge/ui/impl/UIInputInjectionTest.java

@@ -8,7 +8,7 @@
 package org.jboss.forge.ui.impl;
 
 import java.util.Arrays;
-import java.util.List;
+import java.util.Iterator;
 
 import javax.inject.Inject;
 
@@ -91,14 +91,20 @@ public void testCompleter()
       Assert.assertEquals(firstName, firstName.setCompleter(new UICompleter<String>()
       {
          @Override
-         public List<String> getCompletionProposals(String value)
+         public Iterable<String> getCompletionProposals(UIInput<String> input, String value)
          {
-            return Arrays.asList("foo", "bar", "baz");
+            return Arrays.asList("one", "two", "three");
          }
       }));
       Assert.assertNotEquals(originalCompleter, firstName.getCompleter());
-      Assert.assertEquals(3, firstName.getCompleter().getCompletionProposals(null).size());
-      Assert.assertEquals(0, originalCompleter.getCompletionProposals(null).size());
+
+      Iterator<String> iterator = firstName.getCompleter().getCompletionProposals(null, null).iterator();
+      Assert.assertEquals("one", iterator.next());
+      Assert.assertEquals("two", iterator.next());
+      Assert.assertEquals("three", iterator.next());
+      Assert.assertFalse(iterator.hasNext());
+
+      Assert.assertFalse(originalCompleter.getCompletionProposals(null, null).iterator().hasNext());
    }
 
    @Test