| /* |
| * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.script.javascript; |
| |
| import javax.script.Invocable; |
| import sun.org.mozilla.javascript.internal.*; |
| |
| /** |
| * This class implements Rhino-like JavaAdapter to help implement a Java |
| * interface in JavaScript. We support this using Invocable.getInterface. |
| * Using this JavaAdapter, script author could write: |
| * |
| * var r = new java.lang.Runnable() { |
| * run: function() { script... } |
| * }; |
| * |
| * r.run(); |
| * new java.lang.Thread(r).start(); |
| * |
| * Note that Rhino's JavaAdapter support allows extending a Java class and/or |
| * implementing one or more interfaces. This JavaAdapter implementation does |
| * not support these. |
| * |
| * @author A. Sundararajan |
| * @since 1.6 |
| */ |
| final class JavaAdapter extends ScriptableObject implements Function { |
| private JavaAdapter(Invocable engine) { |
| this.engine = engine; |
| } |
| |
| static void init(Context cx, Scriptable scope, boolean sealed) |
| throws RhinoException { |
| RhinoTopLevel topLevel = (RhinoTopLevel) scope; |
| Invocable engine = topLevel.getScriptEngine(); |
| JavaAdapter obj = new JavaAdapter(engine); |
| obj.setParentScope(scope); |
| obj.setPrototype(getFunctionPrototype(scope)); |
| /* |
| * Note that we can't use defineProperty. A property of this |
| * name is already defined in Context.initStandardObjects. We |
| * simply overwrite the property value! |
| */ |
| ScriptableObject.putProperty(topLevel, "JavaAdapter", obj); |
| } |
| |
| public String getClassName() { |
| return "JavaAdapter"; |
| } |
| |
| public Object call(Context cx, Scriptable scope, Scriptable thisObj, |
| Object[] args) throws RhinoException { |
| return construct(cx, scope, args); |
| } |
| |
| public Scriptable construct(Context cx, Scriptable scope, Object[] args) |
| throws RhinoException { |
| if (args.length == 2) { |
| Class<?> clazz = null; |
| Object obj1 = args[0]; |
| if (obj1 instanceof Wrapper) { |
| Object o = ((Wrapper)obj1).unwrap(); |
| if (o instanceof Class && ((Class)o).isInterface()) { |
| clazz = (Class) o; |
| } |
| } else if (obj1 instanceof Class) { |
| if (((Class)obj1).isInterface()) { |
| clazz = (Class) obj1; |
| } |
| } |
| if (clazz == null) { |
| throw Context.reportRuntimeError("JavaAdapter: first arg should be interface Class"); |
| } |
| |
| Scriptable topLevel = ScriptableObject.getTopLevelScope(scope); |
| return cx.toObject(engine.getInterface(args[1], clazz), topLevel); |
| } else { |
| throw Context.reportRuntimeError("JavaAdapter requires two arguments"); |
| } |
| } |
| |
| private Invocable engine; |
| } |