jaroslav@123: /**
jaroslav@123:  * HTML via Java(tm) Language Bindings
jaroslav@123:  * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@123:  *
jaroslav@123:  * This program is free software: you can redistribute it and/or modify
jaroslav@123:  * it under the terms of the GNU General Public License as published by
jaroslav@123:  * the Free Software Foundation, version 2 of the License.
jaroslav@123:  *
jaroslav@123:  * This program is distributed in the hope that it will be useful,
jaroslav@123:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@123:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@123:  * GNU General Public License for more details. apidesign.org
jaroslav@123:  * designates this particular file as subject to the
jaroslav@123:  * "Classpath" exception as provided by apidesign.org
jaroslav@123:  * in the License file that accompanied this code.
jaroslav@123:  *
jaroslav@123:  * You should have received a copy of the GNU General Public License
jaroslav@123:  * along with this program. Look for COPYING file in the top folder.
jaroslav@123:  * If not, see http://wiki.apidesign.org/wiki/GPLwithClassPathException
jaroslav@123:  */
jaroslav@123: 
jaroslav@128: package org.apidesign.html.boot.impl;
jaroslav@123: 
jaroslav@323: import java.io.Closeable;
jaroslav@163: import java.io.Reader;
jaroslav@123: import java.net.URL;
jaroslav@123: import java.net.URLClassLoader;
jaroslav@123: import java.util.ArrayList;
jaroslav@123: import java.util.Arrays;
jaroslav@123: import java.util.Collection;
jaroslav@123: import java.util.List;
jaroslav@123: import javax.script.Invocable;
jaroslav@123: import javax.script.ScriptEngine;
jaroslav@123: import javax.script.ScriptEngineManager;
jaroslav@123: import javax.script.ScriptException;
jaroslav@128: import org.apidesign.html.boot.spi.Fn;
jaroslav@123: import org.testng.annotations.BeforeClass;
jaroslav@288: import org.testng.annotations.BeforeMethod;
jaroslav@123: 
jaroslav@123: /**
jaroslav@123:  *
jaroslav@123:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@123:  */
jaroslav@123: public class FnTest extends JsClassLoaderBase {
jaroslav@288:     private static Fn.Presenter presenter;
jaroslav@123:     
jaroslav@123:     public FnTest() {
jaroslav@123:     }
jaroslav@123: 
jaroslav@123:     @BeforeClass
jaroslav@123:     public static void createClassLoader() throws Exception {
jaroslav@123:         ScriptEngineManager sem = new ScriptEngineManager();
jaroslav@123:         final ScriptEngine eng = sem.getEngineByMimeType("text/javascript");
jaroslav@123:         
jaroslav@123:         final URL my = FnTest.class.getProtectionDomain().getCodeSource().getLocation();
jaroslav@123:         ClassLoader parent = JsClassLoaderTest.class.getClassLoader().getParent();
jaroslav@123:         final URLClassLoader ul = new URLClassLoader(new URL[] { my }, parent);
jaroslav@123:         
jaroslav@128:         class Impl implements FindResources, Fn.Presenter {
jaroslav@123:             @Override
jaroslav@123:             public void findResources(String path, Collection<? super URL> results, boolean oneIsEnough) {
jaroslav@123:                 URL u = ul.findResource(path);
jaroslav@123:                 if (u != null) {
jaroslav@123:                     results.add(u);
jaroslav@123:                 }
jaroslav@123:             }
jaroslav@123: 
jaroslav@123:             @Override
jaroslav@123:             public Fn defineFn(String code, String... names) {
jaroslav@123:                 StringBuilder sb = new StringBuilder();
jaroslav@123:                 sb.append("(function() {");
jaroslav@123:                 sb.append("return function(");
jaroslav@123:                 String sep = "";
jaroslav@123:                 for (String n : names) {
jaroslav@123:                     sb.append(sep);
jaroslav@123:                     sb.append(n);
jaroslav@123:                     sep = ", ";
jaroslav@123:                 }
jaroslav@123:                 sb.append(") {");
jaroslav@123:                 sb.append(code);
jaroslav@123:                 sb.append("};");
jaroslav@123:                 sb.append("})()");
jaroslav@123:                 try {
jaroslav@123:                     final Object val = eng.eval(sb.toString());
jaroslav@288:                     return new Fn(this) {
jaroslav@123:                         @Override
jaroslav@289:                         public Object invoke(Object thiz, Object... args) throws Exception {
jaroslav@123:                             List<Object> all = new ArrayList<Object>(args.length + 1);
jaroslav@123:                             all.add(thiz == null ? val : thiz);
jaroslav@123:                             all.addAll(Arrays.asList(args));
jaroslav@123:                             Invocable inv = (Invocable)eng;
jaroslav@161:                             try {
jaroslav@161:                                 Object ret = inv.invokeMethod(val, "call", all.toArray());
jaroslav@214:                                 return val.equals(ret) ? null : ret;
jaroslav@161:                             } catch (ScriptException ex) {
jaroslav@161:                                 throw ex;
jaroslav@161:                             }
jaroslav@123:                         }
jaroslav@123:                     };
jaroslav@123:                 } catch (ScriptException ex) {
jaroslav@123:                     throw new LinkageError("Can't parse: " + sb, ex);
jaroslav@123:                 }
jaroslav@123:             }
jaroslav@127: 
jaroslav@127:             @Override
jaroslav@128:             public void displayPage(URL resource, Runnable r) {
jaroslav@127:                 throw new UnsupportedOperationException();
jaroslav@127:             }
jaroslav@163: 
jaroslav@163:             @Override
jaroslav@163:             public void loadScript(Reader code) throws Exception {
jaroslav@163:                 eng.eval(code);
jaroslav@163:             }
jaroslav@123:         }
jaroslav@123:         Impl impl = new Impl();
jaroslav@126:         ClassLoader loader = FnUtils.newLoader(impl, impl, parent);
jaroslav@288:         presenter = impl;
jaroslav@123:         
jaroslav@323:         Closeable close = FnContext.activate(impl);
jaroslav@123:         methodClass = loader.loadClass(JsMethods.class.getName());
jaroslav@323:         close.close();
jaroslav@123:     }
jaroslav@288: 
jaroslav@288:     @BeforeMethod public void initPresenter() {
jaroslav@309:         FnContext.currentPresenter(presenter);
jaroslav@288:     }
jaroslav@123: }