ko-fx/src/main/java/org/netbeans/html/kofx/Knockout.java
branchnetbeans
changeset 362 92fb71afdc0e
parent 358 80702021b851
child 365 5c93ad8c7a15
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/ko-fx/src/main/java/org/netbeans/html/kofx/Knockout.java	Mon Dec 16 16:59:43 2013 +0100
     1.3 @@ -0,0 +1,145 @@
     1.4 +/**
     1.5 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
     1.6 + *
     1.7 + * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved.
     1.8 + *
     1.9 + * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    1.10 + * Other names may be trademarks of their respective owners.
    1.11 + *
    1.12 + * The contents of this file are subject to the terms of either the GNU
    1.13 + * General Public License Version 2 only ("GPL") or the Common
    1.14 + * Development and Distribution License("CDDL") (collectively, the
    1.15 + * "License"). You may not use this file except in compliance with the
    1.16 + * License. You can obtain a copy of the License at
    1.17 + * http://www.netbeans.org/cddl-gplv2.html
    1.18 + * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
    1.19 + * specific language governing permissions and limitations under the
    1.20 + * License.  When distributing the software, include this License Header
    1.21 + * Notice in each file and include the License file at
    1.22 + * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
    1.23 + * particular file as subject to the "Classpath" exception as provided
    1.24 + * by Oracle in the GPL Version 2 section of the License file that
    1.25 + * accompanied this code. If applicable, add the following below the
    1.26 + * License Header, with the fields enclosed by brackets [] replaced by
    1.27 + * your own identifying information:
    1.28 + * "Portions Copyrighted [year] [name of copyright owner]"
    1.29 + *
    1.30 + * Contributor(s):
    1.31 + *
    1.32 + * The Original Software is NetBeans. The Initial Developer of the Original
    1.33 + * Software is Oracle. Portions Copyright 2013-2013 Oracle. All Rights Reserved.
    1.34 + *
    1.35 + * If you wish your version of this file to be governed by only the CDDL
    1.36 + * or only the GPL Version 2, indicate your decision by adding
    1.37 + * "[Contributor] elects to include this software in this distribution
    1.38 + * under the [CDDL or GPL Version 2] license." If you do not indicate a
    1.39 + * single choice of license, a recipient has the option to distribute
    1.40 + * your version of this file under either the CDDL, the GPL Version 2 or
    1.41 + * to extend the choice of license to its licensees as provided above.
    1.42 + * However, if you add GPL Version 2 code and therefore, elected the GPL
    1.43 + * Version 2 license, then the option applies only if the new code is
    1.44 + * made subject to such option by the copyright holder.
    1.45 + */
    1.46 +package org.netbeans.html.kofx;
    1.47 +
    1.48 +import net.java.html.js.JavaScriptBody;
    1.49 +import net.java.html.js.JavaScriptResource;
    1.50 +import net.java.html.json.Model;
    1.51 +import netscape.javascript.JSObject;
    1.52 +import org.apidesign.html.json.spi.FunctionBinding;
    1.53 +import org.apidesign.html.json.spi.PropertyBinding;
    1.54 +
    1.55 +/** This is an implementation package - just
    1.56 + * include its JAR on classpath and use official {@link Context} API
    1.57 + * to access the functionality.
    1.58 + * <p>
    1.59 + * Provides binding between {@link Model models} and knockout.js running
    1.60 + * inside a JavaFX WebView. 
    1.61 + *
    1.62 + * @author Jaroslav Tulach <jtulach@netbeans.org>
    1.63 + */
    1.64 +@JavaScriptResource("knockout-2.2.1.js")
    1.65 +final class Knockout {
    1.66 +    static final JSObject KObject;
    1.67 +    static {
    1.68 +        Console.register();
    1.69 +        KObject = (JSObject) kObj();
    1.70 +    }
    1.71 +
    1.72 +    static Object toArray(Object[] arr) {
    1.73 +        return KObject.call("array", arr);
    1.74 +    }
    1.75 +    
    1.76 +    @JavaScriptBody(args = { "model", "prop" }, body =
    1.77 +          "if (model) {\n"
    1.78 +        + "  var koProp = model[prop];\n"
    1.79 +        + "  if (koProp && koProp['valueHasMutated']) {\n"
    1.80 +        + "    koProp['valueHasMutated']();\n"
    1.81 +        + "  }\n"
    1.82 +        + "}\n"
    1.83 +    )
    1.84 +    public native static void valueHasMutated(JSObject model, String prop);
    1.85 +
    1.86 +    @JavaScriptBody(args = { "bindings" }, body = "ko.applyBindings(bindings);")
    1.87 +    native static void applyBindings(Object bindings);
    1.88 +    
    1.89 +    @JavaScriptBody(args = {}, body =
    1.90 +              "  var k = {};"
    1.91 +            + "  k.array= function() {"
    1.92 +            + "    return Array.prototype.slice.call(arguments);"
    1.93 +            + "  };"
    1.94 +            + "  return k;"
    1.95 +    )
    1.96 +    private static native Object kObj();
    1.97 +        
    1.98 +        
    1.99 +    @JavaScriptBody(
   1.100 +        javacall = true,
   1.101 +        args = {"model", "propNames", "propReadOnly", "propValues", "propArr", "funcNames", "funcArr"},
   1.102 +        body
   1.103 +        = "var ret = {};\n"
   1.104 +        + "ret['ko-fx.model'] = model;\n"
   1.105 +        + "function koComputed(name, readOnly, value, prop) {\n"
   1.106 +        + "  function realGetter() {\n"
   1.107 +        + "    try {"
   1.108 +        + "      var v = prop.@org.apidesign.html.json.spi.PropertyBinding::getValue()();"
   1.109 +        + "      return v;"
   1.110 +        + "    } catch (e) {"
   1.111 +        + "      alert(\"Cannot call getValue on \" + model + \" prop: \" + name + \" error: \" + e);"
   1.112 +        + "    }"
   1.113 +        + "  }\n"
   1.114 +        + "  var activeGetter = function() { return value; };\n"
   1.115 +        + "  var bnd = {"
   1.116 +        + "    read: function() {"
   1.117 +        + "      var r = activeGetter();"
   1.118 +        + "      activeGetter = realGetter;"
   1.119 +        + "      return r;"
   1.120 +        + "    },"
   1.121 +        + "    owner: ret\n"
   1.122 +        + "  };\n"
   1.123 +        + "  if (!readOnly) {\n"
   1.124 +        + "    bnd.write = function(val) {\n"
   1.125 +        + "      prop.@org.apidesign.html.json.spi.PropertyBinding::setValue(Ljava/lang/Object;)(val);\n"
   1.126 +        + "    };"
   1.127 +        + "  };"
   1.128 +        + "  ret[name] = ko.computed(bnd);"
   1.129 +        + "}\n"
   1.130 +        + "for (var i = 0; i < propNames.length; i++) {\n"
   1.131 +        + "  koComputed(propNames[i], propReadOnly[i], propValues[i], propArr[i]);\n"
   1.132 +        + "}\n"
   1.133 +        + "function koExpose(name, func) {\n"
   1.134 +        + "  ret[name] = function(data, ev) {\n"
   1.135 +        + "    func.@org.apidesign.html.json.spi.FunctionBinding::call(Ljava/lang/Object;Ljava/lang/Object;)(data, ev);\n"
   1.136 +        + "  };\n"
   1.137 +        + "}\n"
   1.138 +        + "for (var i = 0; i < funcNames.length; i++) {\n"
   1.139 +        + "  koExpose(funcNames[i], funcArr[i]);\n"
   1.140 +        + "}\n"
   1.141 +        + "return ret;\n"
   1.142 +        )
   1.143 +    static native JSObject wrapModel(
   1.144 +        Object model,
   1.145 +        String[] propNames, boolean[] propReadOnly, Object propValues, PropertyBinding[] propArr,
   1.146 +        String[] funcNames, FunctionBinding[] funcArr
   1.147 +    );
   1.148 +}