jaroslav@1189: /**
jaroslav@1227:  * Back 2 Browser Bytecode Translator
jaroslav@1227:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@1189:  *
jaroslav@1189:  * This program is free software: you can redistribute it and/or modify
jaroslav@1189:  * it under the terms of the GNU General Public License as published by
jaroslav@1189:  * the Free Software Foundation, version 2 of the License.
jaroslav@1189:  *
jaroslav@1189:  * This program is distributed in the hope that it will be useful,
jaroslav@1189:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@1189:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@1227:  * GNU General Public License for more details.
jaroslav@1189:  *
jaroslav@1189:  * You should have received a copy of the GNU General Public License
jaroslav@1189:  * along with this program. Look for COPYING file in the top folder.
jaroslav@1227:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@1189:  */
jaroslav@1189: package org.apidesign.html.ko2brwsr;
jaroslav@1189: 
jaroslav@1189: import org.apidesign.bck2brwsr.core.JavaScriptBody;
jaroslav@1189: 
jaroslav@1189: /**
jaroslav@1189:  *
jaroslav@1189:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@1189:  */
jaroslav@1194: final class ConvertTypes {
jaroslav@1189:     ConvertTypes() {
jaroslav@1189:     }
jaroslav@1189:     
jaroslav@1189:     public static String toString(Object object, String property) {
jaroslav@1189:         Object ret = getProperty(object, property);
jaroslav@1189:         return ret == null ? null : ret.toString();
jaroslav@1189:     }
jaroslav@1189: 
jaroslav@1189:     public static double toDouble(Object object, String property) {
jaroslav@1189:         Object ret = getProperty(object, property);
jaroslav@1189:         return ret instanceof Number ? ((Number)ret).doubleValue() : Double.NaN;
jaroslav@1189:     }
jaroslav@1189: 
jaroslav@1189:     public static int toInt(Object object, String property) {
jaroslav@1189:         Object ret = getProperty(object, property);
jaroslav@1189:         return ret instanceof Number ? ((Number)ret).intValue() : Integer.MIN_VALUE;
jaroslav@1189:     }
jaroslav@1189: 
jaroslav@1189:     public static <T> T toModel(Class<T> modelClass, Object object, String property) {
jaroslav@1189:         Object ret = getProperty(object, property);
jaroslav@1189:         if (ret == null || modelClass.isInstance(ret)) {
jaroslav@1189:             return modelClass.cast(ret);
jaroslav@1189:         }
jaroslav@1189:         throw new IllegalStateException("Value " + ret + " is not of type " + modelClass);
jaroslav@1189:     }
jaroslav@1189:     
jaroslav@1189:     public static String toJSON(Object value) {
jaroslav@1189:         if (value == null) {
jaroslav@1189:             return "null";
jaroslav@1189:         }
jaroslav@1189:         if (value instanceof Enum) {
jaroslav@1189:             value = value.toString();
jaroslav@1189:         }
jaroslav@1189:         if (value instanceof String) {
jaroslav@1189:             return '"' + 
jaroslav@1189:                 ((String)value).
jaroslav@1189:                     replace("\"", "\\\"").
jaroslav@1189:                     replace("\n", "\\n").
jaroslav@1189:                     replace("\r", "\\r").
jaroslav@1189:                     replace("\t", "\\t")
jaroslav@1189:                 + '"';
jaroslav@1189:         }
jaroslav@1189:         return value.toString();
jaroslav@1189:     }
jaroslav@1189:     
jaroslav@1189:     @JavaScriptBody(args = { "object", "property" },
jaroslav@1189:         body = "if (property === null) return object;\n"
jaroslav@1189:         + "var p = object[property]; return p ? p : null;"
jaroslav@1189:     )
jaroslav@1189:     private static Object getProperty(Object object, String property) {
jaroslav@1189:         return null;
jaroslav@1189:     }
jaroslav@1189:     
jaroslav@1189:     public static String createJSONP(Object[] jsonResult, Runnable whenDone) {
jaroslav@1189:         int h = whenDone.hashCode();
jaroslav@1189:         String name;
jaroslav@1189:         for (;;) {
jaroslav@1189:             name = "jsonp" + Integer.toHexString(h);
jaroslav@1189:             if (defineIfUnused(name, jsonResult, whenDone)) {
jaroslav@1189:                 return name;
jaroslav@1189:             }
jaroslav@1189:             h++;
jaroslav@1189:         }
jaroslav@1189:     }
jaroslav@1189: 
jaroslav@1189:     @JavaScriptBody(args = { "name", "arr", "run" }, body = 
jaroslav@1189:         "if (window[name]) return false;\n "
jaroslav@1189:       + "window[name] = function(data) {\n "
jaroslav@1189:       + "  delete window[name];\n"
jaroslav@1189:       + "  var el = window.document.getElementById(name);\n"
jaroslav@1189:       + "  el.parentNode.removeChild(el);\n"
jaroslav@1189:       + "  arr[0] = data;\n"
jaroslav@1189:       + "  run.run__V();\n"
jaroslav@1189:       + "};\n"
jaroslav@1189:       + "return true;\n"
jaroslav@1189:     )
jaroslav@1189:     private static boolean defineIfUnused(String name, Object[] arr, Runnable run) {
jaroslav@1189:         return true;
jaroslav@1189:     }
jaroslav@1189:     
jaroslav@1196:     @JavaScriptBody(args = { "s" }, body = "return eval('(' + s + ')');")
jaroslav@1196:     static Object parse(String s) {
jaroslav@1196:         return s;
jaroslav@1196:     }
jaroslav@1196:     
jaroslav@1199:     @JavaScriptBody(args = { "url", "arr", "callback", "method", "data" }, body = ""
jaroslav@1189:         + "var request = new XMLHttpRequest();\n"
jaroslav@1199:         + "if (!method) method = 'GET';\n"
jaroslav@1199:         + "request.open(method, url, true);\n"
jaroslav@1189:         + "request.setRequestHeader('Content-Type', 'application/json; charset=utf-8');\n"
jaroslav@1189:         + "request.onreadystatechange = function() {\n"
jaroslav@1189:         + "  if (this.readyState!==4) return;\n"
jaroslav@1189:         + "  try {\n"
jaroslav@1189:         + "    arr[0] = eval('(' + this.response + ')');\n"
jaroslav@1189:         + "  } catch (error) {;\n"
jaroslav@1199:         + "    arr[0] = this.response;\n"
jaroslav@1199:         + "  }\n"
jaroslav@1189:         + "  callback.run__V();\n"
jaroslav@1189:         + "};"
jaroslav@1199:         + "if (data) request.send(data);"
jaroslav@1199:         + "else request.send();"
jaroslav@1189:     )
jaroslav@1199:     static void loadJSON(
jaroslav@1199:         String url, Object[] jsonResult, Runnable whenDone, String method, String data
jaroslav@1189:     ) {
jaroslav@1189:     }
jaroslav@1189:     
jaroslav@1189:     @JavaScriptBody(args = { "url", "jsonp" }, body = 
jaroslav@1189:         "var scrpt = window.document.createElement('script');\n "
jaroslav@1189:         + "scrpt.setAttribute('src', url);\n "
jaroslav@1189:         + "scrpt.setAttribute('id', jsonp);\n "
jaroslav@1189:         + "scrpt.setAttribute('type', 'text/javascript');\n "
jaroslav@1189:         + "var body = document.getElementsByTagName('body')[0];\n "
jaroslav@1189:         + "body.appendChild(scrpt);\n"
jaroslav@1189:     )
jaroslav@1199:     static void loadJSONP(String url, String jsonp) {
jaroslav@1189:         
jaroslav@1189:     }
jaroslav@1189:     
jaroslav@1189:     public static void extractJSON(Object jsonObject, String[] props, Object[] values) {
jaroslav@1189:         for (int i = 0; i < props.length; i++) {
jaroslav@1189:             values[i] = getProperty(jsonObject, props[i]);
jaroslav@1189:         }
jaroslav@1189:     }
jaroslav@1189:     
jaroslav@1189: }