2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. Look for COPYING file in the top folder.
16 * If not, see http://opensource.org/licenses/GPL-2.0.
18 package org.apidesign.bck2brwsr.htmlpage;
20 import java.io.IOException;
21 import java.io.InputStream;
22 import java.io.InputStreamReader;
23 import java.io.PushbackInputStream;
24 import java.io.Reader;
26 import java.util.Iterator;
27 import java.util.concurrent.Executor;
28 import java.util.concurrent.Executors;
29 import java.util.logging.Level;
30 import java.util.logging.Logger;
31 import javafx.application.Platform;
32 import netscape.javascript.JSObject;
33 import org.apidesign.bck2brwsr.core.JavaScriptBody;
34 import org.json.JSONArray;
35 import org.json.JSONException;
36 import org.json.JSONObject;
37 import org.json.JSONTokener;
41 * @author Jaroslav Tulach <jtulach@netbeans.org>
43 public final class ConvertTypes {
44 private static final Logger LOG = Logger.getLogger(ConvertTypes.class.getName());
48 public static String toString(Object object, String property) {
49 Object ret = getProperty(object, property);
50 return ret == null ? null : ret.toString();
53 public static double toDouble(Object object, String property) {
54 Object ret = getProperty(object, property);
55 return ret instanceof Number ? ((Number)ret).doubleValue() : Double.NaN;
58 public static int toInt(Object object, String property) {
59 Object ret = getProperty(object, property);
60 return ret instanceof Number ? ((Number)ret).intValue() : Integer.MIN_VALUE;
63 public static <T> T toModel(Class<T> modelClass, Object object, String property) {
64 Object ret = getProperty(object, property);
65 if (ret instanceof JSObject) {
66 Object real = ((JSObject)ret).getMember("koModel");
71 if (ret == null || modelClass.isInstance(ret)) {
72 return modelClass.cast(ret);
74 throw new IllegalStateException("Value " + ret + " is not of type " + modelClass);
77 public static String toJSON(Object value) {
81 if (value instanceof String) {
84 replace("\"", "\\\"").
90 return value.toString();
93 @JavaScriptBody(args = { "object", "property" },
94 body = "if (property === null) return object;\n"
95 + "var p = object[property]; return p ? p : null;"
97 private static Object getProperty(Object object, String property) {
98 if (property == null) {
101 if (object instanceof JSObject) {
102 JSObject jo = (JSObject)object;
103 return jo.getMember(property);
109 public static String createJSONP(Object[] jsonResult, Runnable whenDone) {
110 return "json" + Integer.toHexString(whenDone.hashCode());
113 public static void loadJSON(
114 String url, Object[] jsonResult, Runnable whenDone, String jsonp
116 REQ.execute(new LoadJSON(url, jsonResult, whenDone, jsonp));
119 private static final Executor REQ = Executors.newCachedThreadPool();
120 private static final class LoadJSON implements Runnable {
122 private final String url;
123 private final Object[] jsonResult;
124 private final Runnable whenDone;
125 private final String jsonp;
127 LoadJSON(String url, Object[] jsonResult, Runnable whenDone, String jsonp) {
129 this.jsonResult = jsonResult;
130 this.whenDone = whenDone;
136 if (Platform.isFxApplicationThread()) {
141 URL u = new URL(url.replace(" ", "%20"));
142 InputStream is = u.openStream();
144 PushbackInputStream pis = new PushbackInputStream(is, 1);
157 Reader r = new InputStreamReader(is, "UTF-8");
159 JSONTokener tok = new JSONTokener(r);
160 JSONObject obj = new JSONObject(tok);
161 jsonResult[0] = convertToArray(obj);
162 } catch (JSONException | IOException ex) {
164 LOG.log(Level.WARNING, "Cannot connect to " + url, ex);
166 Platform.runLater(this);
170 private static Object convertToArray(Object o) throws JSONException {
171 if (o instanceof JSONArray) {
172 JSONArray ja = (JSONArray)o;
173 Object[] arr = new Object[ja.length()];
174 for (int i = 0; i < arr.length; i++) {
175 arr[i] = convertToArray(ja.get(i));
178 } else if (o instanceof JSONObject) {
179 JSONObject obj = (JSONObject)o;
180 Iterator it = obj.keys();
181 while (it.hasNext()) {
182 String key = (String)it.next();
183 obj.put(key, convertToArray(obj.get(key)));
192 @JavaScriptBody(args = { "url", "jsonp" }, body =
193 "var scrpt = window.document.createElement('script');\n "
194 + "scrpt.setAttribute('src', url);\n "
195 + "scrpt.setAttribute('id', jsonp);\n "
196 + "scrpt.setAttribute('type', 'text/javascript');\n "
197 + "var body = document.getElementsByTagName('body')[0];\n "
198 + "body.appendChild(scrpt);\n"
200 private static void loadJSONP(String url, String jsonp) {
204 public static void extractJSON(Object jsonObject, String[] props, Object[] values) {
205 if (jsonObject instanceof JSONObject) {
206 JSONObject obj = (JSONObject)jsonObject;
207 for (int i = 0; i < props.length; i++) {
209 values[i] = obj.get(props[i]);
210 } catch (JSONException ex) {
211 LOG.log(Level.SEVERE, "Can't read " + props[i] + " from " + jsonObject, ex);