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43 package org.netbeans.html.ko4j;
45 import net.java.html.js.JavaScriptBody;
46 import net.java.html.js.JavaScriptResource;
47 import net.java.html.json.Model;
48 import org.apidesign.html.json.spi.FunctionBinding;
49 import org.apidesign.html.json.spi.PropertyBinding;
51 /** This is an implementation package - just
52 * include its JAR on classpath and use official {@link Context} API
53 * to access the functionality.
55 * Provides binding between {@link Model models} and knockout.js running
56 * inside a JavaFX WebView.
58 * @author Jaroslav Tulach <jtulach@netbeans.org>
60 @JavaScriptResource("knockout-2.2.1.js")
61 final class Knockout {
66 @JavaScriptBody(args = { }, body = "")
67 private static native void loadKnockout();
69 @JavaScriptBody(args = { "model", "prop" }, body =
71 + " var koProp = model[prop];\n"
72 + " if (koProp && koProp['valueHasMutated']) {\n"
73 + " koProp['valueHasMutated']();\n"
77 public native static void valueHasMutated(Object model, String prop);
79 @JavaScriptBody(args = { "bindings" }, body = "ko.applyBindings(bindings);\n")
80 native static void applyBindings(Object bindings);
84 args = {"model", "propNames", "propReadOnly", "propValues", "propArr", "funcNames", "funcArr"},
87 + "ret['ko-fx.model'] = model;\n"
88 + "function koComputed(name, readOnly, value, prop) {\n"
89 + " function realGetter() {\n"
91 + " var v = prop.@org.apidesign.html.json.spi.PropertyBinding::getValue()();\n"
94 + " alert(\"Cannot call getValue on \" + model + \" prop: \" + name + \" error: \" + e);\n"
97 + " var activeGetter = function() { return value; };\n"
99 + " read: function() {\n"
100 + " var r = activeGetter();\n"
101 + " activeGetter = realGetter;\n"
102 + " return r == null ? null : r.valueOf();\n"
106 + " if (!readOnly) {\n"
107 + " bnd.write = function(val) {\n"
108 + " prop.@org.apidesign.html.json.spi.PropertyBinding::setValue(Ljava/lang/Object;)(val);\n"
111 + " ret[name] = ko.computed(bnd);\n"
113 + "for (var i = 0; i < propNames.length; i++) {\n"
114 + " koComputed(propNames[i], propReadOnly[i], propValues[i], propArr[i]);\n"
116 + "function koExpose(name, func) {\n"
117 + " ret[name] = function(data, ev) {\n"
118 + " func.@org.apidesign.html.json.spi.FunctionBinding::call(Ljava/lang/Object;Ljava/lang/Object;)(data, ev);\n"
121 + "for (var i = 0; i < funcNames.length; i++) {\n"
122 + " koExpose(funcNames[i], funcArr[i]);\n"
126 static native Object wrapModel(
128 String[] propNames, boolean[] propReadOnly, Object propValues, PropertyBinding[] propArr,
129 String[] funcNames, FunctionBinding[] funcArr
132 @JavaScriptBody(args = { "o" }, body = "return o['ko-fx.model'] ? o['ko-fx.model'] : o;")
133 static native Object toModel(Object wrapper);