/**

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

  *

  * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.

  *

  * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

  * Other names may be trademarks of their respective owners.

  *

  * 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

  * License.  When distributing the software, include this License Header

  * Notice in each file and include the License file at

  * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

  * 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

  * your own identifying information:

  * "Portions Copyrighted [year] [name of copyright owner]"

  *

  * Contributor(s):

  *

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

  * Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.

  *

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

  * or only the GPL Version 2, indicate your decision by adding

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

  * under the [CDDL or GPL Version 2] license." If you do not indicate a

  * single choice of license, a recipient has the option to distribute

  * 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

  * Version 2 license, then the option applies only if the new code is

  * made subject to such option by the copyright holder.

  */

 package org.netbeans.html.ko4j;

 import java.io.ByteArrayOutputStream;

 import java.io.Closeable;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.io.Reader;

 import java.net.URL;

 import java.util.concurrent.Executor;

 import java.util.logging.Logger;

 import net.java.html.js.JavaScriptBody;

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

 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;

 /** This is an implementation package - just

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

  * to access the functionality.

  * <p>

  *

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

  */

 final class FXContext

 implements Technology.BatchInit<Object>, 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 = "if (window) return true; else return false;")

     private static boolean isJavaScriptEnabledJs() {

         return false;

     }

     static boolean isJavaScriptEnabled() {

         if (javaScriptEnabled != null) {

             return javaScriptEnabled;

         }

         if (!(javaScriptEnabled = isJavaScriptEnabledJs())) {

             Closeable c = Fn.activate(new TrueFn());

             try {

                 javaScriptEnabled = isJavaScriptEnabledJs();

             } finally {

                 try {

                     c.close();

                 } catch (IOException ex) {

                     // cannot happen

                 }

             }

         }

         return javaScriptEnabled;

     }

     final boolean areWebSocketsSupported() {

         return isWebSocket();

     }

     @JavaScriptBody(args = {}, body = "if (window.WebSocket) return true; else return false;")

     private static boolean isWebSocket() {

         return false;

     }

     @Override

     public Object 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();

         }

         Object ret = Knockout.wrapModel(model, 

             propNames, propReadOnly, propValues, propArr,

             funcNames, funcArr

         );

         return ret;

     }

     @Override

     public Object wrapModel(Object model) {

         throw new UnsupportedOperationException();

     }

     @Override

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

         throw new UnsupportedOperationException();

     }

     @Override

     public void valueHasMutated(Object data, String propertyName) {

         Knockout.valueHasMutated(data, propertyName);

     }

     @Override

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

         throw new UnsupportedOperationException();

     }

     @Override

     public void applyBindings(Object data) {

         Knockout.applyBindings(data);

     }

     @Override

     public Object wrapArray(Object[] arr) {

         return arr;

     }

     @Override

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

         LoadJSON.extractJSON(obj, props, values);

     }

     @Override

     public void loadJSON(final JSONCall call) {

         if (call.isJSONP()) {

             String me = LoadJSON.createJSONP(call);

             LoadJSON.loadJSONP(call.composeURL(me), me);

         } else {

             String data = null;

             if (call.isDoOutput()) {

                 try {

                     ByteArrayOutputStream bos = new ByteArrayOutputStream();

                     call.writeData(bos);

                     data = new String(bos.toByteArray(), "UTF-8");

                 } catch (IOException ex) {

                     call.notifyError(ex);

                 }

             }

             LoadJSON.loadJSON(call.composeURL(null), call, call.getMethod(), data);

         }

     }

     @Override

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

         return modelClass.cast(Knockout.toModel(data));

     }

     @Override

     public Object toJSON(InputStream is) throws IOException {

         StringBuilder sb = new StringBuilder();

         InputStreamReader r = new InputStreamReader(is);

         for (;;) {

             int ch = r.read();

             if (ch == -1) {

                 break;

             }

             sb.append((char)ch);

         }

         return LoadJSON.parse(sb.toString());

     }

     @Override

     public void runSafe(final Runnable r) {

         class Wrap implements Runnable {

             @Override public void run() {

                 Closeable c = Fn.activate(browserContext);

                 try {

                     r.run();

                 } finally {

                     try {

                         c.close();

                     } catch (IOException ex) {

                         // cannot be thrown

                     }

                 }

             }

         }

         Wrap w = new Wrap();

         if (browserContext instanceof Executor) {

             ((Executor)browserContext).execute(w);

         } else {

             w.run();

         }

     }

     @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();

     }

     private static final class TrueFn extends Fn implements Fn.Presenter {

         @Override

         public Object invoke(Object thiz, Object... args) throws Exception {

             return true;

         }

         @Override

         public Fn defineFn(String code, String... names) {

             return this;

         }

         @Override

         public void displayPage(URL page, Runnable onPageLoad) {

         }

         @Override

         public void loadScript(Reader code) throws Exception {

         }

     } // end of TrueFn

 }