/**

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

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  *

  * The contents of this file are subject to the terms of either the GNU

  * General Public License Version 2 only ("GPL") or the Common

  * Development and Distribution License("CDDL") (collectively, the

  * "License"). You may not use this file except in compliance with the

  * License. You can obtain a copy of the License at

  * http://www.netbeans.org/cddl-gplv2.html

  * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

  * specific language governing permissions and limitations under the

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  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the GPL Version 2 section of the License file that

  * accompanied this code. If applicable, add the following below the

  * License Header, with the fields enclosed by brackets [] replaced by

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  *

  * Contributor(s):

  *

  * The Original Software is NetBeans. The Initial Developer of the Original

  * Software is Oracle. Portions Copyright 2013-2013 Oracle. All Rights Reserved.

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  * If you wish your version of this file to be governed by only the CDDL

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  * "[Contributor] elects to include this software in this distribution

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  * your version of this file under either the CDDL, the GPL Version 2 or

  * to extend the choice of license to its licensees as provided above.

  * However, if you add GPL Version 2 code and therefore, elected the GPL

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 package org.netbeans.html.kofx;

 import java.io.Closeable;

 import java.io.IOException;

 import java.io.InputStream;

 import java.util.ServiceLoader;

 import java.util.logging.Logger;

 import javafx.application.Platform;

 import net.java.html.js.JavaScriptBody;

 import netscape.javascript.JSObject;

 import org.apidesign.html.boot.spi.Fn;

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

 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.apidesign.html.json.spi.WSTransfer;

 import org.openide.util.lookup.ServiceProvider;

 /** This is an implementation package - just

  * include its JAR on classpath and use official {@link Context} API

  * to access the functionality.

  * <p>

  * Registers {@link ContextProvider}, so {@link ServiceLoader} can find it.

  *

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

  */

 public final class FXContext

 implements Technology.BatchInit<JSObject>, Transfer, WSTransfer<LoadWS> {

     static final Logger LOG = Logger.getLogger(FXContext.class.getName());

     private static Boolean javaScriptEnabled;

     private final Fn.Presenter browserContext;

     public FXContext(Fn.Presenter browserContext) {

         this.browserContext = browserContext;

     }

     @JavaScriptBody(args = {}, body = "return true;")

     private static boolean isJavaScriptEnabledJs() {

         return false;

     }

     static boolean isJavaScriptEnabled() {

         if (javaScriptEnabled != null) {

             return javaScriptEnabled;

         }

         return javaScriptEnabled = isJavaScriptEnabledJs();

     }

     final boolean areWebSocketsSupported() {

         return LoadWS.isSupported();

     }

     @Override

     public JSObject wrapModel(Object model, PropertyBinding[] propArr, FunctionBinding[] funcArr) {

         String[] propNames = new String[propArr.length];

         boolean[] propReadOnly = new boolean[propArr.length];

         Object[] propValues = new Object[propArr.length];

         for (int i = 0; i < propNames.length; i++) {

             propNames[i] = propArr[i].getPropertyName();

             propReadOnly[i] = propArr[i].isReadOnly();

             propValues[i] = propArr[i].getValue();

         }

         String[] funcNames = new String[funcArr.length];

         for (int i = 0; i < funcNames.length; i++) {

             funcNames[i] = funcArr[i].getFunctionName();

         }

         return Knockout.wrapModel(model, 

             propNames, propReadOnly, Knockout.toArray(propValues), propArr, 

             funcNames, funcArr

         );

     }

     @Override

     public JSObject wrapModel(Object model) {

         throw new UnsupportedOperationException();

     }

     @Override

     public void bind(PropertyBinding b, Object model, JSObject data) {

         throw new UnsupportedOperationException();

     }

     @Override

     public void valueHasMutated(JSObject data, String propertyName) {

         Knockout.valueHasMutated(data, propertyName);

     }

     @Override

     public void expose(FunctionBinding fb, Object model, JSObject d) {

         throw new UnsupportedOperationException();

     }

     @Override

     public void applyBindings(JSObject data) {

         Knockout.applyBindings(data);

     }

     @Override

     public Object wrapArray(Object[] arr) {

         return Knockout.toArray(arr);

     }

     @Override

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

         LoadJSON.extractJSON(obj, props, values);

     }

     @Override

     public void loadJSON(final JSONCall call) {

         LoadJSON.loadJSON(call);

     }

     @Override

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

         if (data instanceof JSObject) {

             data = ((JSObject)data).getMember("ko-fx.model"); // NOI18N

         }

         return modelClass.cast(data);

     }

     @Override

     public Object toJSON(InputStream is) throws IOException {

         return LoadJSON.parse(is);

     }

     @Override

     public void runSafe(final Runnable r) {

         class Wrap implements Runnable {

             @Override public void run() {

                 try (Closeable c = Fn.activate(browserContext)) {

                     r.run();

                 } catch (IOException ex) {

                     // cannot be thrown

                 }

             }

         }

         Wrap w = new Wrap();

         if (Platform.isFxApplicationThread()) {

             w.run();

         } else {

             Platform.runLater(w);

         }

     }

     @Override

     public LoadWS open(String url, JSONCall onReply) {

         return new LoadWS(onReply, url);

     }

     @Override

     public void send(LoadWS socket, JSONCall data) {

         socket.send(data);

     }

     @Override

     public void close(LoadWS socket) {

         socket.close();

     }

     @ServiceProvider(service = Contexts.Provider.class)

     public static final class Prvdr implements Contexts.Provider {

         @Override

         public void fillContext(Contexts.Builder context, Class<?> requestor) {

             if (isJavaScriptEnabled()) {

                 FXContext c = new FXContext(Fn.activePresenter());

                 context.register(Technology.class, c, 100);

                 context.register(Transfer.class, c, 100);

                 if (c.areWebSocketsSupported()) {

                     context.register(WSTransfer.class, c, 100);

                 }

             }

         }

     }

 }