# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1366043430 -7200
# Node ID 9ddce13e8ff9bb497ce964fc9fbf493bf27da264
# Parent  b41a01a6d9986076e2c1398bcc2bd3407dd08bb6
Can call @OnFunction

diff -r b41a01a6d998 -r 9ddce13e8ff9 javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/ConvertTypes.java
--- a/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/ConvertTypes.java	Mon Apr 15 07:08:55 2013 +0200
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/ConvertTypes.java	Mon Apr 15 18:30:30 2013 +0200
@@ -17,6 +17,7 @@
  */
 package org.apidesign.bck2brwsr.htmlpage;
 
+import netscape.javascript.JSObject;
 import org.apidesign.bck2brwsr.core.JavaScriptBody;
 
 /**
@@ -44,6 +45,12 @@
 
     public static <T> T toModel(Class<T> modelClass, Object object, String property) {
         Object ret = getProperty(object, property);
+        if (ret instanceof JSObject) {
+            Object real = ((JSObject)ret).getMember("koModel");
+            if (real != null) {
+                ret = real;
+            }
+        }
         if (ret == null || modelClass.isInstance(ret)) {
             return modelClass.cast(ret);
         }
@@ -71,7 +78,15 @@
         + "var p = object[property]; return p ? p : null;"
     )
     private static Object getProperty(Object object, String property) {
-        return null;
+        if (property == null) {
+            return object;
+        } else {
+            if (object instanceof JSObject) {
+                JSObject jo = (JSObject)object;
+                return jo.getMember(property);
+            }
+            return null;
+        }
     }
     
     public static String createJSONP(Object[] jsonResult, Runnable whenDone) {
diff -r b41a01a6d998 -r 9ddce13e8ff9 javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/KOFunction.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/KOFunction.java	Mon Apr 15 18:30:30 2013 +0200
@@ -0,0 +1,46 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.htmlpage;
+
+import java.lang.reflect.Method;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/** Represents callback from Knockout.js to Java.
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public final class KOFunction {
+    private static final Logger LOG = Logger.getLogger(KOFunction.class.getName());
+    private final Object model;
+    private final Method method;
+    
+    KOFunction(Object model, String method) throws NoSuchMethodException {
+        this.method = model.getClass().getDeclaredMethod(method, Object.class, Object.class);
+        this.method.setAccessible(true);
+        this.model = model;
+    }
+    
+    public void call(Object data, Object ev) {
+        try {
+            this.method.invoke(model, data, ev);
+        } catch (Throwable ex) {
+            LOG.log(Level.SEVERE, "Can't call " + method + " on " + model, ex);
+        }
+    }
+}
diff -r b41a01a6d998 -r 9ddce13e8ff9 javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/Knockout.java
--- a/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/Knockout.java	Mon Apr 15 07:08:55 2013 +0200
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/Knockout.java	Mon Apr 15 18:30:30 2013 +0200
@@ -82,9 +82,18 @@
             + "    ret.toString = function() { return 'KObject' + cnt + ' value: ' + value + ' props: ' + Object.keys(this); };"
             + "    return ret;"
             + "  };"
+            
             + "  scope.KObject.array= function() {"
             + "    return Array.prototype.slice.call(arguments);"
             + "  };"
+            
+            + "  scope.KObject.expose = function(bindings, model, prop, sig) {"
+            + "    bindings[prop] = function(data, ev) {"
+            + "         console.log(\"  callback on prop: \" + prop);"
+            + "      model[sig](data, ev);"
+            + "    };"
+            + "  };"
+            
             + "})(window); window.KObject"
             );
     }
@@ -186,6 +195,8 @@
         try {
             KOProperty kop = new KOProperty(model, strip(getter), strip(setter));
             bnd.call("bnd", ko, bindings, kop, prop, "get", "set", primitive, array);
+            
+            ((JSObject)bindings).setMember("koModel", model);
             LOG.log(Level.INFO, "binding defined for {0}: {1}", new Object[]{prop, ((JSObject)bindings).getMember(prop)});
         } catch (Throwable ex) {
             LOG.log(Level.INFO, "binding failed for {0} on {1}", new Object[]{prop, bindings});
@@ -205,6 +216,12 @@
     private static void expose(
         Object bindings, Object model, String prop, String sig
     ) {
+        try {
+            KOFunction f = new KOFunction(model, strip(sig));
+            KObject.call("expose", bindings, f, prop, "call");
+        } catch (Throwable ex) {
+            LOG.log(Level.SEVERE, "Cannot define binding for " + prop + " in model " + model, ex);
+        }
     }
     
     @JavaScriptBody(args = { "bindings" }, body = "ko.applyBindings(bindings);")