001 /*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2008-2011 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * Sonar is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * Sonar is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with Sonar; if not, write to the Free Software
018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
019 */
020 package org.sonar.api.web.gwt.client.webservices;
021
022 import java.util.Date;
023
024 import com.google.gwt.core.client.JavaScriptException;
025 import com.google.gwt.core.client.JavaScriptObject;
026 import com.google.gwt.http.client.URL;
027 import com.google.gwt.i18n.client.DateTimeFormat;
028 import com.google.gwt.json.client.JSONArray;
029 import com.google.gwt.json.client.JSONBoolean;
030 import com.google.gwt.json.client.JSONNumber;
031 import com.google.gwt.json.client.JSONObject;
032 import com.google.gwt.json.client.JSONString;
033 import com.google.gwt.json.client.JSONValue;
034
035 /**
036 * @deprecated since 2.8. Use sonar-gwt-api instead.
037 */
038 @Deprecated
039 public final class JsonUtils {
040 private static int requestId = 0;
041
042 private JsonUtils() {
043
044 }
045
046 public interface JSONHandler {
047 void onResponse(JavaScriptObject obj);
048
049 void onTimeout();
050
051 void onError(int errorCode, String errorMessage);
052 }
053
054 public static void requestJson(String url, JSONHandler handler) {
055 if (!url.endsWith("&") && !url.endsWith("?")) {
056 url += "&";
057 }
058 if (!url.contains("format=json")) {
059 url += "format=json&";
060 }
061 if (!url.contains("callback=")) {
062 //IMPORTANT : the url should ended with ?callback= or &callback= for JSONP calls
063 url += "callback=";
064 }
065 makeJSONRequest(requestId++, URL.encode(url), handler);
066 }
067
068 public static native void makeJSONRequest(int requestId, String url, JSONHandler handler) /*-{
069 var callback = "callback" + requestId;
070
071 // create SCRIPT tag, and set SRC attribute equal to JSON feed URL + callback function name
072 var script = document.createElement("script");
073 script.setAttribute("src", url+callback);
074 script.setAttribute("type", "text/javascript");
075
076 window[callback] = function(jsonObj) {
077 @org.sonar.api.web.gwt.client.webservices.JsonUtils::dispatchJSON(Lcom/google/gwt/core/client/JavaScriptObject;Lorg/sonar/api/web/gwt/client/webservices/JsonUtils$JSONHandler;)(jsonObj, handler);
078 window[callback + "done"] = true;
079 }
080
081 setTimeout(function() {
082 if (!window[callback + "done"]) {
083 handler.@org.sonar.api.web.gwt.client.webservices.JsonUtils.JSONHandler::onTimeout();
084 }
085
086 // cleanup
087 document.body.removeChild(script);
088 if (window[callback]) {
089 delete window[callback];
090 }
091 if (window[callback + "done"]) {
092 delete window[callback + "done"];
093 }
094 }, 120000);
095
096 document.body.appendChild(script);
097 }-*/;
098
099 public static void dispatchJSON(JavaScriptObject jsonObj, JSONHandler handler) {
100 JSONObject obj = new JSONObject(jsonObj);
101 if (obj.isObject() != null) {
102 if (obj.containsKey("err_code")) {
103 handler.onError(new Double(obj.get("err_code").isNumber().doubleValue()).intValue(),
104 obj.get("err_msg").isString().stringValue());
105 return;
106 }
107 }
108 handler.onResponse(jsonObj);
109 }
110
111 public static String getString(JSONObject json, String field) {
112 JSONValue jsonValue;
113 JSONString jsonString;
114 if ((jsonValue = json.get(field)) == null) {
115 return null;
116 }
117 if ((jsonString = jsonValue.isString()) == null) {
118 JSONNumber jsonNumber = jsonValue.isNumber();
119 return jsonNumber != null ? jsonNumber.toString() : null;
120 }
121 return jsonString.stringValue();
122 }
123
124 public static Date getDate(JSONObject json, String field) {
125 DateTimeFormat frmt = DateTimeFormat.getFormat("yyyy-MM-dd'T'HH:mm:ssZ");
126 String date = getString(json, field);
127 if (date!=null && date.endsWith("Z") && date.length()>2) {
128 // see SONAR-1182
129 date = date.substring(0, date.length()-2) + "+00:00";
130 }
131 return frmt.parse(date);
132 }
133
134 public static Boolean getBoolean(JSONObject json, String field) {
135 JSONValue jsonValue;
136 JSONBoolean jsonBoolean;
137 if ((jsonValue = json.get(field)) == null) {
138 return null;
139 }
140 if ((jsonBoolean = jsonValue.isBoolean()) == null) {
141 return null;
142 }
143 return jsonBoolean.booleanValue();
144 }
145
146 public static Double getDouble(JSONObject json, String field) {
147 JSONValue jsonValue;
148 JSONNumber jsonNumber;
149 if ((jsonValue = json.get(field)) == null) {
150 return null;
151 }
152 if ((jsonNumber = jsonValue.isNumber()) == null) {
153 return null;
154 }
155 return jsonNumber.doubleValue();
156 }
157
158 public static Integer getInteger(JSONObject json, String field) {
159 final Double d = getDouble(json, field);
160 if (d != null) {
161 return d.intValue();
162 }
163 return null;
164 }
165
166 public static JSONObject getArray(JSONValue json, int i) {
167 if (json instanceof JSONArray) {
168 return ((JSONArray) json).get(i).isObject();
169 }
170 if (json instanceof JSONObject) {
171 return ((JSONObject) json).get(Integer.toString(i)).isObject();
172 }
173 throw new JavaScriptException("Not implemented");
174 }
175
176 public static int getArraySize(JSONValue array) {
177 if (array instanceof JSONArray) {
178 return ((JSONArray) array).size();
179 }
180 if (array instanceof JSONObject) {
181 return ((JSONObject) array).size();
182 }
183 throw new JavaScriptException("Not implemented");
184 }
185
186 }