diff -r 03e4aaa4ef3d -r 81ad7a739fed htmlpage/src/main/java/org/apidesign/bck2brwsr/htmlpage/PageProcessor.java
--- a/htmlpage/src/main/java/org/apidesign/bck2brwsr/htmlpage/PageProcessor.java	Mon Sep 24 15:06:43 2012 +0200
+++ b/htmlpage/src/main/java/org/apidesign/bck2brwsr/htmlpage/PageProcessor.java	Tue Sep 25 09:55:34 2012 +0200
@@ -28,11 +28,15 @@
 import javax.annotation.processing.RoundEnvironment;
 import javax.annotation.processing.SupportedAnnotationTypes;
 import javax.lang.model.element.Element;
+import javax.lang.model.element.ElementKind;
+import javax.lang.model.element.ExecutableElement;
+import javax.lang.model.element.Modifier;
 import javax.lang.model.element.PackageElement;
 import javax.lang.model.element.TypeElement;
 import javax.tools.Diagnostic;
 import javax.tools.FileObject;
 import javax.tools.StandardLocation;
+import org.apidesign.bck2brwsr.htmlpage.api.OnClick;
 import org.apidesign.bck2brwsr.htmlpage.api.Page;
 import org.openide.util.lookup.ServiceProvider;
 
@@ -42,7 +46,10 @@
  * @author Jaroslav Tulach <jtulach@netbeans.org>
  */
 @ServiceProvider(service=Processor.class)
-@SupportedAnnotationTypes("org.apidesign.bck2brwsr.htmlpage.api.Page")
+@SupportedAnnotationTypes({
+    "org.apidesign.bck2brwsr.htmlpage.api.Page",
+    "org.apidesign.bck2brwsr.htmlpage.api.OnClick"
+})
 public final class PageProcessor extends AbstractProcessor {
     @Override
     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
@@ -64,18 +71,26 @@
             try {
                 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + p.name(), e);
                 w = new OutputStreamWriter(java.openOutputStream());
-                w.append("package " + pkg + ";\n");
-                w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
-                w.append("class ").append(p.name()).append(" {\n");
-                for (String id : pp.ids()) {
-                    String tag = pp.tagNameForId(id);
-                    String type = type(tag);
-                    w.append("  ").append("public static final ").
-                        append(type).append(' ').append(cnstnt(id)).append(" = new ").
-                        append(type).append("(\"").append(id).append("\");\n");
+                try {
+                    w.append("package " + pkg + ";\n");
+                    w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
+                    w.append("class ").append(p.name()).append(" {\n");
+                    for (String id : pp.ids()) {
+                        String tag = pp.tagNameForId(id);
+                        String type = type(tag);
+                        w.append("  ").append("public static final ").
+                            append(type).append(' ').append(cnstnt(id)).append(" = new ").
+                            append(type).append("(\"").append(id).append("\");\n");
+                    }
+                    w.append("  static {\n");
+                    if (!initializeOnClick(pe, w, pp)) {
+                        return false;
+                    }
+                    w.append("  }\n");
+                    w.append("}\n");
+                } finally {
+                    w.close();
                 }
-                w.append("}");
-                w.close();
             } catch (IOException ex) {
                 processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Can't create " + p.name() + ".java", e);
                 return false;
@@ -110,4 +125,41 @@
     private static String cnstnt(String id) {
         return id.toUpperCase(Locale.ENGLISH).replace('.', '_');
     }
+
+    private boolean initializeOnClick(PackageElement pe, Writer w, ProcessPage pp) throws IOException {
+        for (Element clazz : pe.getEnclosedElements()) {
+            if (clazz.getKind() != ElementKind.CLASS) {
+                continue;
+            }
+            TypeElement type = (TypeElement)clazz;
+            for (Element method : clazz.getEnclosedElements()) {
+                OnClick oc = method.getAnnotation(OnClick.class);
+                if (oc != null) {
+                    if (pp.tagNameForId(oc.id()) == null) {
+                        processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "id = " + oc.id() + " does not exist in the HTML page. Found only " + pp.ids(), method);
+                        return false;
+                    }
+                    ExecutableElement ee = (ExecutableElement)method;
+                    if (!ee.getParameters().isEmpty()) {
+                        processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@OnClose method can't take arguments", ee);
+                        return false;
+                    }
+                    if (!ee.getModifiers().contains(Modifier.STATIC)) {
+                        processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@OnClose method has to be static", ee);
+                        return false;
+                    }
+                    if (ee.getModifiers().contains(Modifier.PRIVATE)) {
+                        processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@OnClose method can't be private", ee);
+                        return false;
+                    }
+                    w.append("  ").append(cnstnt(oc.id())).
+                        append(".addOnClick(new Runnable() { public void run() {\n");
+                    w.append("    ").append(type.getSimpleName().toString()).
+                        append('.').append(ee.getSimpleName()).append("();\n");
+                    w.append("  }});\n");
+                }
+            }
+        }
+        return true;
+    }
 }