# HG changeset patch
# User Jaroslav Tulach <jtulach@netbeans.org>
# Date 1213430911 -7200
# Node ID c6f1ccdd37f36fccb5ca98935f89b2a38800103a
# Parent  a3a5034a7b8f916c8f05e1b5857debfc97e0a2bb
Example how lookup can listen to and react to changes

diff -r a3a5034a7b8f -r c6f1ccdd37f3 samples/componentinjection/anagram-modular/src-app-lookup/org/apidesign/anagram/app/lookup/AnagramsWithLookup.java
--- a/samples/componentinjection/anagram-modular/src-app-lookup/org/apidesign/anagram/app/lookup/AnagramsWithLookup.java	Sat Jun 14 10:08:28 2008 +0200
+++ b/samples/componentinjection/anagram-modular/src-app-lookup/org/apidesign/anagram/app/lookup/AnagramsWithLookup.java	Sat Jun 14 10:08:31 2008 +0200
@@ -6,6 +6,8 @@
 import org.openide.util.Lookup;
 
 // BEGIN: anagram.lookup.Anagrams
+import org.openide.util.LookupEvent;
+import org.openide.util.LookupListener;
 class AnagramsWithLookup extends Anagrams {
 
     public AnagramsWithLookup() {
@@ -20,6 +22,24 @@
     protected Scrambler getScrambler() {
         return Lookup.getDefault().lookup(Scrambler.class);
     }
-
+// FINISH: anagram.lookup.Anagrams
+    
+    private Lookup.Result<Scrambler> scramblers = Lookup.getDefault().lookupResult(Scrambler.class);
+// BEGIN: anagram.lookup.Listeners      
+    private Lookup.Result<WordLibrary> libraries 
+        = Lookup.getDefault().lookupResult(WordLibrary.class);
+    private LookupListener listener = new LookupListener() {
+        public void resultChanged(LookupEvent ev) {
+            initWord();
+        }
+    };
+    {
+        libraries.addLookupListener(listener);
+// FINISH: anagram.lookup.Listeners      
+        
+        scramblers.addLookupListener(listener);
+        // initialize the results for listening
+        libraries.allItems();
+        scramblers.allItems();
+    }
 }
-// END: anagram.lookup.Anagrams
diff -r a3a5034a7b8f -r c6f1ccdd37f3 samples/componentinjection/anagram-modular/src-gui/org/apidesign/anagram/gui/Anagrams.java
--- a/samples/componentinjection/anagram-modular/src-gui/org/apidesign/anagram/gui/Anagrams.java	Sat Jun 14 10:08:28 2008 +0200
+++ b/samples/componentinjection/anagram-modular/src-gui/org/apidesign/anagram/gui/Anagrams.java	Sat Jun 14 10:08:31 2008 +0200
@@ -199,7 +199,8 @@
         int index = wordIdx % words.length;
         
         original = words[index];
-        scrambled = getScrambler().scramble(original);
+        Scrambler scrambler = getScrambler();
+        scrambled = scrambler != null ? scrambler.scramble(original) : original;
         
         scrambledWord.setText(scrambled);
     }
diff -r a3a5034a7b8f -r c6f1ccdd37f3 samples/componentinjection/anagram-modular/src-test/org/apidesign/anagram/app/lookup/AnagramsWithLookupTest.java
--- a/samples/componentinjection/anagram-modular/src-test/org/apidesign/anagram/app/lookup/AnagramsWithLookupTest.java	Sat Jun 14 10:08:28 2008 +0200
+++ b/samples/componentinjection/anagram-modular/src-test/org/apidesign/anagram/app/lookup/AnagramsWithLookupTest.java	Sat Jun 14 10:08:31 2008 +0200
@@ -1,11 +1,47 @@
 package org.apidesign.anagram.app.lookup;
 
+import org.apidesign.anagram.api.WordLibrary;
 import org.apidesign.anagram.gui.*;
-import org.apidesign.anagram.app.lookup.AnagramsWithLookup;
+import static org.junit.Assert.*;
+import org.junit.Test;
+import org.netbeans.junit.MockServices;
 
 public class AnagramsWithLookupTest extends AnagramsTestBase {
     @Override
     protected Anagrams create() {
         return new AnagramsWithLookup();
     }
+    
+    @Test public void testChangesInTheRegistrationAreReflected() {
+        Anagrams ui = create();
+        
+        MockServices.setServices(FirstMockWordLibrary.class);
+        ui.display();
+        
+        assertEquals(
+            "Original word has to be from FirstMockWordLibrary",
+            "1st", ui.getOriginalWord()
+        );
+        
+        MockServices.setServices(SecondMockWordLibrary.class);
+        
+        assertEquals(
+            "Original word has to be from new library now",
+            "2nd", ui.getOriginalWord()
+        );
+    }
+    
+    public static final class FirstMockWordLibrary implements WordLibrary {
+        public String[] getWords() {
+            return new String[] { "1st" };
+        }
+    }
+
+    public static final class SecondMockWordLibrary implements WordLibrary {
+        public String[] getWords() {
+            return new String[] { "2nd" };
+        }
+    }
+    
+    
 }
diff -r a3a5034a7b8f -r c6f1ccdd37f3 samples/componentinjection/anagram-modular/src-test/org/apidesign/anagram/gui/AnagramsTestBase.java
--- a/samples/componentinjection/anagram-modular/src-test/org/apidesign/anagram/gui/AnagramsTestBase.java	Sat Jun 14 10:08:28 2008 +0200
+++ b/samples/componentinjection/anagram-modular/src-test/org/apidesign/anagram/gui/AnagramsTestBase.java	Sat Jun 14 10:08:31 2008 +0200
@@ -2,6 +2,7 @@
 
 import org.apidesign.anagram.api.Scrambler;
 import org.apidesign.anagram.api.WordLibrary;
+import org.junit.Before;
 import static org.junit.Assert.*;
 import org.junit.Test;
 import org.netbeans.junit.MockServices;
@@ -10,6 +11,11 @@
 
     protected abstract Anagrams create();
     
+    @Before
+    public void cleanUpServices() {
+        MockServices.setServices();
+    }
+    
     @Test public void testInjectionOfServices() throws Exception {
         Anagrams ui = create();