2011-06-26 22:10:10 +02:00
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package be.klak.rhino;
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2011-06-24 21:11:58 +02:00
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import org.mozilla.javascript.Context;
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import org.mozilla.javascript.ContextFactory;
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import org.mozilla.javascript.Function;
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import org.mozilla.javascript.Scriptable;
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import org.mozilla.javascript.ScriptableObject;
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import org.mozilla.javascript.tools.shell.Global;
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public class RhinoContext {
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2011-06-28 14:12:29 +02:00
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private Context jsContext;
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private Scriptable jsScope;
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public RhinoContext() {
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this.jsContext = createJavascriptContext();
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this.jsScope = createJavascriptScopeForContext(this.jsContext);
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}
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public RhinoContext(Scriptable sharedScope) {
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this.jsContext = createJavascriptContext();
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Scriptable newScope = this.jsContext.newObject(sharedScope);
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newScope.setPrototype(sharedScope);
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newScope.setParentScope(null);
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this.jsScope = newScope;
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}
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private RhinoContext createNewRhinoContextBasedOnPrevious() {
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return new RhinoContext(this.jsScope);
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}
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public void runAsync(final RhinoRunnable runnable) {
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new Thread(new Runnable() {
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@Override
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public void run() {
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RhinoContext newRhinoContextBasedOnPrevious = createNewRhinoContextBasedOnPrevious();
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try {
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runnable.run(newRhinoContextBasedOnPrevious);
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} finally {
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newRhinoContextBasedOnPrevious.exit();
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}
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}
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}).start();
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}
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public Object evalJS(String js) {
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return this.jsContext.evaluateString(this.jsScope, js, "script", 1, null);
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}
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@SuppressWarnings("unchecked")
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public <T extends ScriptableObject> T createClassInJS(Class<T> classToExport) {
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exportClass(classToExport);
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T newObj = (T) jsContext.newObject(jsScope, classToExport.getSimpleName());
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return newObj;
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}
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public void setProperty(String objectToReceiveProperty, String property, Object value) {
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Object obj = evalJS(objectToReceiveProperty);
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if (obj == null || !(obj instanceof ScriptableObject)) {
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throw new IllegalStateException("object to receive property is no ScriptableObject but a "
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+ (obj == null ? "" : obj.getClass().getSimpleName()));
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}
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ScriptableObject objectToReceive = (ScriptableObject) obj;
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objectToReceive.put(property, objectToReceive, value);
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}
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private void exportClass(Class<? extends ScriptableObject> classToExport) {
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try {
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ScriptableObject.defineClass(this.jsScope, classToExport);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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public void load(String path, String... jsFiles) {
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for (String jsFile : jsFiles) {
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load(path + jsFile);
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}
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}
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public void load(String fileName) {
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evalJS("load('" + fileName + "')");
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// Main.processFile(this.jsContext, this.jsScope, fileName);
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}
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public Object executeFunction(ScriptableObject object, String fnName, Object[] arguments) {
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Object fnPointer = object.get(fnName, object);
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if (fnPointer == null || !(fnPointer instanceof Function)) {
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fnPointer = object.getPrototype().get(fnName, object);
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}
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return ((Function) fnPointer).call(jsContext, jsScope, object, arguments);
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}
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public Object executeFunction(ScriptableObject object, String fnName) {
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return executeFunction(object, fnName, new Object[] {});
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}
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public Context getJsContext() {
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return jsContext;
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}
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public Scriptable getJsScope() {
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return jsScope;
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}
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public void loadEnv(String jsDir) {
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// TODO ensure rhino 1.7R3 instead of R2 -> geen shim nodig + paths
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// gedoe in orde zetten hier
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load(jsDir + "/lib/es5-shim-0.0.4.min.js");
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load(jsDir + "/lib/env.rhino.1.2.js");
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load(jsDir + "/lib/env.utils.js");
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load(jsDir + "/envJsOptions.js");
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}
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private Global createJavascriptScopeForContext(Context jsContext) {
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Global scope = new Global();
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scope.init(jsContext);
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return scope;
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}
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private Context createJavascriptContext() {
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Context jsContext = ContextFactory.getGlobal().enterContext();
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jsContext.setOptimizationLevel(-1);
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jsContext.setLanguageVersion(Context.VERSION_1_5); // TODO 1.8 plx
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jsContext.setErrorReporter(new ChainedErrorReporter(jsContext.getErrorReporter()));
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return jsContext;
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}
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public void exit() {
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Context.exit();
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}
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2011-06-24 21:11:58 +02:00
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}
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