1.1 --- a/ko/fx/src/main/java/org/apidesign/bck2brwsr/kofx/Knockout.java Wed Jun 26 20:11:13 2013 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,196 +0,0 @@
1.4 -/**
1.5 - * Back 2 Browser Bytecode Translator
1.6 - * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.7 - *
1.8 - * This program is free software: you can redistribute it and/or modify
1.9 - * it under the terms of the GNU General Public License as published by
1.10 - * the Free Software Foundation, version 2 of the License.
1.11 - *
1.12 - * This program is distributed in the hope that it will be useful,
1.13 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.14 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.15 - * GNU General Public License for more details.
1.16 - *
1.17 - * You should have received a copy of the GNU General Public License
1.18 - * along with this program. Look for COPYING file in the top folder.
1.19 - * If not, see http://opensource.org/licenses/GPL-2.0.
1.20 - */
1.21 -package org.apidesign.bck2brwsr.kofx;
1.22 -
1.23 -import java.io.BufferedReader;
1.24 -import java.io.IOException;
1.25 -import java.io.InputStream;
1.26 -import java.io.InputStreamReader;
1.27 -import java.util.logging.Level;
1.28 -import java.util.logging.Logger;
1.29 -import net.java.html.js.JavaScriptBody;
1.30 -import net.java.html.json.Model;
1.31 -import netscape.javascript.JSObject;
1.32 -import org.apidesign.html.json.spi.FunctionBinding;
1.33 -import org.apidesign.html.json.spi.PropertyBinding;
1.34 -
1.35 -/** This is an implementation package - just
1.36 - * include its JAR on classpath and use official {@link Context} API
1.37 - * to access the functionality.
1.38 - * <p>
1.39 - * Provides binding between {@link Model models} and knockout.js running
1.40 - * inside a JavaFX WebView.
1.41 - *
1.42 - * @author Jaroslav Tulach <jtulach@netbeans.org>
1.43 - */
1.44 -public final class Knockout {
1.45 - private static final Logger LOG = Logger.getLogger(Knockout.class.getName());
1.46 - /** used by tests */
1.47 - static Knockout next;
1.48 - private final Object model;
1.49 -
1.50 - Knockout(Object model) {
1.51 - this.model = model == null ? this : model;
1.52 - }
1.53 -
1.54 - public Object koData() {
1.55 - return model;
1.56 - }
1.57 -
1.58 - static Object toArray(Object[] arr) {
1.59 - return InvokeJS.KObject.call("array", arr);
1.60 - }
1.61 -
1.62 - private static int cnt;
1.63 - public static <M> Knockout createBinding(Object model) {
1.64 - Object bindings = InvokeJS.create(model, ++cnt);
1.65 - return new Knockout(bindings);
1.66 - }
1.67 -
1.68 - public void valueHasMutated(String prop) {
1.69 - valueHasMutated((JSObject) model, prop);
1.70 - }
1.71 - public static void valueHasMutated(JSObject model, String prop) {
1.72 - LOG.log(Level.FINE, "property mutated: {0}", prop);
1.73 - try {
1.74 - Object koProp = model.getMember(prop);
1.75 - if (koProp instanceof JSObject) {
1.76 - ((JSObject)koProp).call("valueHasMutated");
1.77 - }
1.78 - } catch (Throwable t) {
1.79 - LOG.log(Level.WARNING, "valueHasMutated failed for " + model + " prop: " + prop, t);
1.80 - }
1.81 - }
1.82 -
1.83 - static void bind(
1.84 - Object bindings, Object model, PropertyBinding pb, boolean primitive, boolean array
1.85 - ) {
1.86 - final String prop = pb.getPropertyName();
1.87 - try {
1.88 - InvokeJS.bind(bindings, pb, prop, "getValue", pb.isReadOnly() ? null : "setValue", primitive, array);
1.89 -
1.90 - ((JSObject)bindings).setMember("ko-fx.model", model);
1.91 - LOG.log(Level.FINE, "binding defined for {0}: {1}", new Object[]{prop, ((JSObject)bindings).getMember(prop)});
1.92 - } catch (Throwable ex) {
1.93 - LOG.log(Level.WARNING, "binding failed for {0} on {1}", new Object[]{prop, bindings});
1.94 - }
1.95 - }
1.96 - static void expose(Object bindings, FunctionBinding f) {
1.97 - final String prop = f.getFunctionName();
1.98 - try {
1.99 - InvokeJS.expose(bindings, f, prop, "call");
1.100 - } catch (Throwable ex) {
1.101 - LOG.log(Level.SEVERE, "Cannot define binding for " + prop + " in model " + f, ex);
1.102 - }
1.103 - }
1.104 -
1.105 - static void applyBindings(Object bindings) {
1.106 - InvokeJS.applyBindings(bindings);
1.107 - }
1.108 -
1.109 - private static final class InvokeJS {
1.110 - static final JSObject KObject;
1.111 -
1.112 - static {
1.113 - final InputStream koScript = Knockout.class.getResourceAsStream("knockout-2.2.1.js");
1.114 - assert koScript != null : "Can't load knockout.js";
1.115 - BufferedReader r = new BufferedReader(new InputStreamReader(koScript));
1.116 - StringBuilder sb = new StringBuilder();
1.117 - for (;;) {
1.118 - try {
1.119 - String l = r.readLine();
1.120 - if (l == null) {
1.121 - break;
1.122 - }
1.123 - sb.append(l).append('\n');
1.124 - } catch (IOException ex) {
1.125 - throw new IllegalStateException(ex);
1.126 - }
1.127 - }
1.128 - exec(sb.toString());
1.129 - Object ko = exec("ko");
1.130 - assert ko != null : "Knockout library successfully defined 'ko'";
1.131 -
1.132 - Console.register();
1.133 - KObject = (JSObject) kObj();
1.134 - }
1.135 -
1.136 - @JavaScriptBody(args = { "s" }, body = "return eval(s);")
1.137 - private static native Object exec(String s);
1.138 -
1.139 - @JavaScriptBody(args = {}, body =
1.140 - " var k = {};"
1.141 - + " k.array= function() {"
1.142 - + " return Array.prototype.slice.call(arguments);"
1.143 - + " };"
1.144 - + " return k;"
1.145 - )
1.146 - private static native Object kObj();
1.147 -
1.148 - @JavaScriptBody(args = { "value", "cnt " }, body =
1.149 - " var ret = {};"
1.150 - + " ret.toString = function() { return 'KObject' + cnt + ' value: ' + value + ' props: ' + Object.keys(this); };"
1.151 - + " return ret;"
1.152 - )
1.153 - static native Object create(Object value, int cnt);
1.154 -
1.155 - @JavaScriptBody(args = { "bindings", "model", "prop", "sig" }, body =
1.156 - " bindings[prop] = function(data, ev) {"
1.157 - // + " console.log(\" callback on prop: \" + prop);"
1.158 - + " model[sig](data, ev);"
1.159 - + " };"
1.160 - )
1.161 - static native Object expose(Object bindings, Object model, String prop, String sig);
1.162 -
1.163 -
1.164 - @JavaScriptBody(args = { "bindings", "model", "prop", "getter", "setter", "primitive", "array" }, body =
1.165 - " var bnd = {"
1.166 - + " read: function() {"
1.167 - + " try {"
1.168 - + " var v = model[getter]();"
1.169 - // + " console.log(\" getter value \" + v + \" for property \" + prop);"
1.170 - // + " try { v = v.koData(); } catch (ignore) {"
1.171 - // + " console.log(\"Cannot convert to koData: \" + ignore);"
1.172 - // + " };"
1.173 - // + " console.log(\" getter ret value \" + v);"
1.174 - // + " for (var pn in v) {"
1.175 - // + " console.log(\" prop: \" + pn + \" + in + \" + v + \" = \" + v[pn]);"
1.176 - // + " if (typeof v[pn] == \"function\") console.log(\" its function value:\" + v[pn]());"
1.177 - // + " }"
1.178 - // + " console.log(\" all props printed for \" + (typeof v));"
1.179 - + " return v;"
1.180 - + " } catch (e) {"
1.181 - + " alert(\"Cannot call \" + getter + \" on \" + model + \" error: \" + e);"
1.182 - + " }"
1.183 - + " },"
1.184 - + " owner: bindings"
1.185 - // + " ,deferEvaluation: true"
1.186 - + " };"
1.187 - + " if (setter != null) {"
1.188 - + " bnd.write = function(val) {"
1.189 - + " model[setter](primitive ? new Number(val) : val);"
1.190 - + " };"
1.191 - + " };"
1.192 - + " bindings[prop] = ko.computed(bnd);"
1.193 - )
1.194 - static native void bind(Object binding, Object model, String prop, String getter, String setter, boolean primitive, boolean array);
1.195 -
1.196 - @JavaScriptBody(args = { "bindings" }, body = "ko.applyBindings(bindings);")
1.197 - private static native void applyBindings(Object bindings);
1.198 - }
1.199 -}