jaroslav@813: /** jaroslav@813: * Back 2 Browser Bytecode Translator jaroslav@813: * Copyright (C) 2012 Jaroslav Tulach jaroslav@813: * jaroslav@813: * This program is free software: you can redistribute it and/or modify jaroslav@813: * it under the terms of the GNU General Public License as published by jaroslav@813: * the Free Software Foundation, version 2 of the License. jaroslav@813: * jaroslav@813: * This program is distributed in the hope that it will be useful, jaroslav@813: * but WITHOUT ANY WARRANTY; without even the implied warranty of jaroslav@813: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the jaroslav@813: * GNU General Public License for more details. jaroslav@813: * jaroslav@813: * You should have received a copy of the GNU General Public License jaroslav@813: * along with this program. Look for COPYING file in the top folder. jaroslav@813: * If not, see http://opensource.org/licenses/GPL-2.0. jaroslav@813: */ jaroslav@813: package org.apidesign.bck2brwsr.htmlpage; jaroslav@813: jaroslav@990: import netscape.javascript.JSObject; jaroslav@813: import org.apidesign.bck2brwsr.core.JavaScriptBody; jaroslav@813: jaroslav@813: /** jaroslav@813: * jaroslav@813: * @author Jaroslav Tulach jaroslav@813: */ jaroslav@813: public final class ConvertTypes { jaroslav@813: ConvertTypes() { jaroslav@813: } jaroslav@813: jaroslav@813: public static String toString(Object object, String property) { jaroslav@813: Object ret = getProperty(object, property); jaroslav@813: return ret == null ? null : ret.toString(); jaroslav@813: } jaroslav@813: jaroslav@813: public static double toDouble(Object object, String property) { jaroslav@813: Object ret = getProperty(object, property); jaroslav@813: return ret instanceof Number ? ((Number)ret).doubleValue() : Double.NaN; jaroslav@813: } jaroslav@813: jaroslav@813: public static int toInt(Object object, String property) { jaroslav@813: Object ret = getProperty(object, property); jaroslav@813: return ret instanceof Number ? ((Number)ret).intValue() : Integer.MIN_VALUE; jaroslav@813: } jaroslav@906: jaroslav@906: public static T toModel(Class modelClass, Object object, String property) { jaroslav@906: Object ret = getProperty(object, property); jaroslav@990: if (ret instanceof JSObject) { jaroslav@990: Object real = ((JSObject)ret).getMember("koModel"); jaroslav@990: if (real != null) { jaroslav@990: ret = real; jaroslav@990: } jaroslav@990: } jaroslav@906: if (ret == null || modelClass.isInstance(ret)) { jaroslav@906: return modelClass.cast(ret); jaroslav@906: } jaroslav@906: throw new IllegalStateException("Value " + ret + " is not of type " + modelClass); jaroslav@906: } jaroslav@813: jaroslav@920: public static String toJSON(Object value) { jaroslav@920: if (value == null) { jaroslav@920: return "null"; jaroslav@920: } jaroslav@920: if (value instanceof String) { jaroslav@920: return '"' + jaroslav@920: ((String)value). jaroslav@920: replace("\"", "\\\""). jaroslav@920: replace("\n", "\\n"). jaroslav@920: replace("\r", "\\r"). jaroslav@920: replace("\t", "\\t") jaroslav@920: + '"'; jaroslav@920: } jaroslav@920: return value.toString(); jaroslav@920: } jaroslav@920: jaroslav@813: @JavaScriptBody(args = { "object", "property" }, jaroslav@879: body = "if (property === null) return object;\n" jaroslav@879: + "var p = object[property]; return p ? p : null;" jaroslav@813: ) jaroslav@813: private static Object getProperty(Object object, String property) { jaroslav@990: if (property == null) { jaroslav@990: return object; jaroslav@990: } else { jaroslav@990: if (object instanceof JSObject) { jaroslav@990: JSObject jo = (JSObject)object; jaroslav@990: return jo.getMember(property); jaroslav@990: } jaroslav@990: return null; jaroslav@990: } jaroslav@813: } jaroslav@954: jaroslav@954: public static String createJSONP(Object[] jsonResult, Runnable whenDone) { jaroslav@954: int h = whenDone.hashCode(); jaroslav@954: String name; jaroslav@954: for (;;) { jaroslav@954: name = "jsonp" + Integer.toHexString(h); jaroslav@954: if (defineIfUnused(name, jsonResult, whenDone)) { jaroslav@954: return name; jaroslav@954: } jaroslav@954: h++; jaroslav@954: } jaroslav@954: } jaroslav@934: jaroslav@954: @JavaScriptBody(args = { "name", "arr", "run" }, body = jaroslav@954: "if (window[name]) return false;\n " jaroslav@954: + "window[name] = function(data) {\n " jaroslav@963: + " delete window[name];\n" jaroslav@963: + " var el = window.document.getElementById(name);\n" jaroslav@963: + " el.parentNode.removeChild(el);\n" jaroslav@954: + " arr[0] = data;\n" jaroslav@954: + " run.run__V();\n" jaroslav@963: + "};\n" jaroslav@954: + "return true;\n" jaroslav@954: ) jaroslav@954: private static boolean defineIfUnused(String name, Object[] arr, Runnable run) { jaroslav@954: return true; jaroslav@954: } jaroslav@954: jaroslav@934: @JavaScriptBody(args = { "url", "arr", "callback" }, body = "" jaroslav@934: + "var request = new XMLHttpRequest();\n" jaroslav@934: + "request.open('GET', url, true);\n" jaroslav@934: + "request.setRequestHeader('Content-Type', 'application/json; charset=utf-8');\n" jaroslav@934: + "request.onreadystatechange = function() {\n" jaroslav@934: + " if (this.readyState!==4) return;\n" jaroslav@941: + " try {\n" jaroslav@941: + " arr[0] = eval('(' + this.response + ')');\n" jaroslav@941: + " } catch (error) {;\n" jaroslav@941: + " throw 'Cannot parse' + error + ':' + this.response;\n" jaroslav@941: + " };\n" jaroslav@934: + " callback.run__V();\n" jaroslav@934: + "};" jaroslav@934: + "request.send();" jaroslav@934: ) jaroslav@954: private static void loadJSON( jaroslav@934: String url, Object[] jsonResult, Runnable whenDone jaroslav@949: ) { jaroslav@949: } jaroslav@934: jaroslav@954: public static void loadJSON( jaroslav@954: String url, Object[] jsonResult, Runnable whenDone, String jsonp jaroslav@954: ) { jaroslav@954: if (jsonp == null) { jaroslav@954: loadJSON(url, jsonResult, whenDone); jaroslav@954: } else { jaroslav@954: loadJSONP(url, jsonp); jaroslav@954: } jaroslav@954: } jaroslav@954: jaroslav@954: @JavaScriptBody(args = { "url", "jsonp" }, body = jaroslav@954: "var scrpt = window.document.createElement('script');\n " jaroslav@954: + "scrpt.setAttribute('src', url);\n " jaroslav@954: + "scrpt.setAttribute('id', jsonp);\n " jaroslav@954: + "scrpt.setAttribute('type', 'text/javascript');\n " jaroslav@954: + "var body = document.getElementsByTagName('body')[0];\n " jaroslav@954: + "body.appendChild(scrpt);\n" jaroslav@954: ) jaroslav@954: private static void loadJSONP(String url, String jsonp) { jaroslav@954: jaroslav@954: } jaroslav@954: jaroslav@934: public static void extractJSON(Object jsonObject, String[] props, Object[] values) { jaroslav@934: for (int i = 0; i < props.length; i++) { jaroslav@934: values[i] = getProperty(jsonObject, props[i]); jaroslav@934: } jaroslav@934: } jaroslav@934: jaroslav@813: }