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 package net.java.html.json;

 import net.java.html.BrwsrCtx;

 import java.io.IOException;

 import java.io.InputStream;

 import java.lang.reflect.InvocationTargetException;

 import java.util.HashMap;

 import java.util.Map;

 import org.apidesign.html.context.spi.Contexts;

 import org.netbeans.html.json.impl.WrapperObject;

 import org.apidesign.html.json.spi.FunctionBinding;

 import org.apidesign.html.json.spi.JSONCall;

 import org.apidesign.html.json.spi.PropertyBinding;

 import org.apidesign.html.json.spi.Technology;

 import org.apidesign.html.json.spi.Transfer;

 import org.testng.annotations.BeforeMethod;

 import org.testng.annotations.Test;

 import static org.testng.Assert.*;

 /**

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 public class MapModelTest {

     private MapTechnology t;

     private BrwsrCtx c;

     @BeforeMethod public void initTechnology() {

         t = new MapTechnology();

         c = Contexts.newBuilder().register(Technology.class, t, 1).

             register(Transfer.class, t, 1).build();

     }

     @Test public void isThereABinding() throws Exception {

         Person p = Models.bind(new Person(), c).applyBindings();

         p.setFirstName("Jarda");

         Map m = (Map)WrapperObject.find(p);

         Object v = m.get("firstName");

         assertNotNull(v, "Value should be in the map");

         assertEquals(v.getClass(), One.class, "It is instance of One");

         One o = (One)v;

         assertEquals(o.changes, 1, "One change so far");

         assertFalse(o.pb.isReadOnly(), "Mutable property");

         assertEquals(o.get(), "Jarda", "Value should be in the map");

         o.set("Karle");

         assertEquals(p.getFirstName(), "Karle", "Model value updated");

         assertEquals(o.changes, 2, "Snd change");

     }

     @Test public void dontNotifySameProperty() throws Exception {

         Person p = Models.bind(new Person(), c);

         p.setFirstName("Jirka");

         Map m = (Map)WrapperObject.find(p);

         Object v = m.get("firstName");

         assertNotNull(v, "Value should be in the map");

         assertEquals(v.getClass(), One.class, "It is instance of One");

         One o = (One)v;

         assertEquals(o.changes, 0, "No change so far the only one change happened before we connected");

         p.setFirstName(new String("Jirka"));

         assertEquals(o.changes, 0, "No change so far, the value is the same");

         p.setFirstName("Jarda");

         assertFalse(o.pb.isReadOnly(), "Mutable property");

         assertEquals(o.get(), "Jarda", "Value should be in the map");

         o.set("Karle");

         assertEquals(p.getFirstName(), "Karle", "Model value updated");

         assertEquals(o.changes, 2, "Snd change");

     }

     @Test public void derivedProperty() throws Exception {

         Person p = Models.bind(new Person(), c);

         Map m = (Map)WrapperObject.find(p);

         Object v = m.get("fullName");

         assertNotNull(v, "Value should be in the map");

         assertEquals(v.getClass(), One.class, "It is instance of One");

         One o = (One)v;

         assertTrue(o.pb.isReadOnly(), "Mutable property");

     }

     @Test public void changeSex() {

         Person p = Models.bind(new Person(), c);

         p.setFirstName("Trans");

         p.setSex(Sex.MALE);

         Map m = (Map)WrapperObject.find(p);

         Object o = m.get("changeSex");

         assertNotNull(o, "Function registered in the model");

         assertEquals(o.getClass(), One.class);

         One one = (One)o;

         assertNotNull(one.fb, "Function binding specified");

         one.fb.call(null, null);

         assertEquals(p.getSex(), Sex.FEMALE, "Changed");

     }

     @Test public void setSex() {

         Person p = Models.bind(new Person(), c);

         p.setFirstName("Trans");

         Map m = (Map)WrapperObject.find(p);

         Object o = m.get("changeSex");

         assertNotNull(o, "Function registered in the model");

         assertEquals(o.getClass(), One.class);

         One one = (One)o;

         assertNotNull(one.fb, "Function binding specified");

         one.fb.call("FEMALE", new Object());

         assertEquals(p.getSex(), Sex.FEMALE, "Changed");

     }

     static final class One {

         int changes;

         final PropertyBinding pb;

         final FunctionBinding fb;

         One(Object m, PropertyBinding pb) throws NoSuchMethodException {

             this.pb = pb;

             this.fb = null;

         }

         One(Object m, FunctionBinding fb) throws NoSuchMethodException {

             this.pb = null;

             this.fb = fb;

         }

         Object get() throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {

             return pb.getValue();

         }

         void set(Object v) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {

             pb.setValue(v);

         }

     }

     static final class MapTechnology 

     implements Technology<Map<String,One>>, Transfer {

         @Override

         public Map<String, One> wrapModel(Object model) {

             return new HashMap<String, One>();

         }

         @Override

         public void valueHasMutated(Map<String, One> data, String propertyName) {

             One p = data.get(propertyName);

             if (p != null) {

                 p.changes++;

             }

         }

         @Override

         public void bind(PropertyBinding b, Object model, Map<String, One> data) {

             try {

                 One o = new One(model, b);

                 data.put(b.getPropertyName(), o);

             } catch (NoSuchMethodException ex) {

                 throw new IllegalStateException(ex);

             }

         }

         @Override

         public void expose(FunctionBinding fb, Object model, Map<String, One> data) {

             try {

                 data.put(fb.getFunctionName(), new One(model, fb));

             } catch (NoSuchMethodException ex) {

                 throw new IllegalStateException(ex);

             }

         }

         @Override

         public void applyBindings(Map<String, One> data) {

         }

         @Override

         public Object wrapArray(Object[] arr) {

             return arr;

         }

         @Override

         public void extract(Object obj, String[] props, Object[] values) {

             Map<?,?> map = obj instanceof Map ? (Map<?,?>)obj : null;

             for (int i = 0; i < Math.min(props.length, values.length); i++) {

                 if (map == null) {

                     values[i] = null;

                 } else {

                     values[i] = map.get(props[i]);

                     if (values[i] instanceof One) {

                         values[i] = ((One)values[i]).pb.getValue();

                     }

                 }

             }

         }

         @Override

         public void loadJSON(JSONCall call) {

             call.notifyError(new UnsupportedOperationException());

         }

         @Override

         public <M> M toModel(Class<M> modelClass, Object data) {

             return modelClass.cast(data);

         }

         @Override

         public Object toJSON(InputStream is) throws IOException {

             throw new IOException();

         }

         @Override

         public void runSafe(Runnable r) {

             throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.

         }

     }

 }