| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.netbeans.html.boot.fx; |
| |
| import java.io.BufferedReader; |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.lang.ref.WeakReference; |
| import java.lang.reflect.Array; |
| import java.net.URL; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.NavigableSet; |
| import java.util.TreeSet; |
| import java.util.concurrent.Executor; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import javafx.application.Platform; |
| import javafx.scene.Parent; |
| import javafx.scene.layout.BorderPane; |
| import javafx.scene.web.WebEngine; |
| import javafx.scene.web.WebView; |
| import netscape.javascript.JSException; |
| import netscape.javascript.JSObject; |
| import org.netbeans.html.boot.spi.Fn; |
| |
| /** |
| * |
| * @author Jaroslav Tulach |
| */ |
| public abstract class AbstractFXPresenter implements Fn.Presenter, |
| Fn.KeepAlive, Fn.ToJavaScript, Fn.FromJavaScript, Executor, Cloneable, Fn.Ref<AbstractFXPresenter> { |
| static final Logger LOG = Logger.getLogger(FXPresenter.class.getName()); |
| protected static int cnt; |
| protected Runnable onLoad; |
| protected WebEngine engine; |
| |
| // transient - e.g. not cloneable |
| private JSObject arraySize; |
| private JSObject wrapArrImpl; |
| private JSObject newPOJOImpl; |
| private Object undefined; |
| private JavaValues values; |
| private Id id; |
| |
| @Override |
| protected AbstractFXPresenter clone() { |
| try { |
| AbstractFXPresenter p = (AbstractFXPresenter) super.clone(); |
| p.arraySize = null; |
| p.wrapArrImpl = null; |
| p.undefined = null; |
| p.newPOJOImpl = null; |
| p.values = null; |
| p.id = null; |
| return p; |
| } catch (CloneNotSupportedException ex) { |
| throw new IllegalStateException(ex); |
| } |
| } |
| |
| @Override |
| public Fn defineFn(String code, String... names) { |
| return defineJSFn(code, names, null); |
| } |
| |
| @Override |
| public Fn defineFn(String code, String[] names, boolean[] keepAlive) { |
| return defineJSFn(code, names, keepAlive); |
| } |
| |
| |
| |
| final JSFn defineJSFn(String code, String[] names, boolean[] keepAlive) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("(function() {\n"); |
| sb.append(" return function(\n "); |
| String sep = ""; |
| if (names != null) for (String n : names) { |
| sb.append(sep).append(n); |
| sep = ","; |
| } |
| sb.append(" \n) {\n"); |
| sb.append(code); |
| sb.append("};\n"); |
| sb.append("})();\n"); |
| if (LOG.isLoggable(Level.FINE)) { |
| LOG.log(Level.FINE, |
| "defining function #{0}:\n{1}\n", |
| new Object[] { ++cnt, code } |
| ); |
| } |
| JSObject x = (JSObject) engine.executeScript(sb.toString()); |
| return new JSFn(this, x, cnt, keepAlive); |
| } |
| |
| @Override |
| public void loadScript(Reader code) throws Exception { |
| BufferedReader r = new BufferedReader(code); |
| StringBuilder sb = new StringBuilder(); |
| for (;;) { |
| String l = r.readLine(); |
| if (l == null) { |
| break; |
| } |
| sb.append(l).append('\n'); |
| } |
| final String script = sb.toString(); |
| engine.executeScript(script); |
| } |
| |
| protected final void onPageLoad() { |
| Closeable c = Fn.activate(this.clone()); |
| try { |
| onLoad.run(); |
| } finally { |
| try { |
| c.close(); |
| } catch (IOException ex) { |
| LOG.log(Level.SEVERE, null, ex); |
| } |
| } |
| } |
| |
| @Override |
| public void displayPage(final URL resource, final Runnable onLoad) { |
| this.onLoad = onLoad; |
| final WebView view = findView(resource); |
| this.engine = view.getEngine(); |
| boolean inspectOn = false; |
| try { |
| if (FXInspect.initialize(engine)) { |
| inspectOn = true; |
| } |
| } catch (Throwable ex) { |
| ex.printStackTrace(); |
| } |
| final boolean isFirebugOn = Boolean.getBoolean("firebug.lite"); // NOI18N |
| final boolean isInspectOn = inspectOn; |
| class Run implements Runnable { |
| |
| @Override |
| public void run() { |
| if (isInspectOn || isFirebugOn) { |
| view.setContextMenuEnabled(true); |
| final Parent p = view.getParent(); |
| if (p instanceof BorderPane) { |
| BorderPane bp = (BorderPane) p; |
| if (bp.getTop() == null) { |
| bp.setTop(new FXToolbar(view, bp, isFirebugOn)); |
| } |
| } |
| } |
| try { |
| engine.load(resource.toExternalForm()); |
| } catch (RuntimeException ex) { |
| LOG.log(Level.SEVERE, "Cannot load resource " + resource, ex); |
| } |
| } |
| } |
| Run run = new Run(); |
| if (Platform.isFxApplicationThread()) { |
| run.run(); |
| } else { |
| Platform.runLater(run); |
| } |
| waitFinished(); |
| } |
| |
| abstract void waitFinished(); |
| |
| abstract WebView findView(final URL resource); |
| |
| private final JavaValues values() { |
| if (values == null) { |
| values = new JavaValues(); |
| } |
| return values; |
| } |
| |
| private final JSObject wrapArrFn() { |
| if (wrapArrImpl == null) { |
| try { |
| wrapArrImpl = (JSObject)defineJSFn(" var k = {};" |
| + " k.array= function() {" |
| + " return Array.prototype.slice.call(arguments);" |
| + " };" |
| + " return k;", null, null |
| ).invokeImpl(null, false); |
| } catch (Exception ex) { |
| throw new IllegalStateException(ex); |
| } |
| } |
| return wrapArrImpl; |
| } |
| |
| JSObject createPOJOWrapper(int hash, int id) { |
| if (newPOJOImpl == null) { |
| try { |
| newPOJOImpl = (JSObject) defineJSFn( |
| "var k = {};\n" + |
| "k.fxBrwsrId = function(hash, id) {\n" + |
| " var obj = {};\n" + |
| " Object.defineProperty(obj, 'fxBrwsrId', {\n" + |
| " value : function(callback) { callback.hashAndId(hash, id) }\n" + |
| " });\n" + |
| " return obj;\n" + |
| "};\n" + |
| "return k;\n", new String[] { "callback" }, null |
| ).invokeImpl(null, false); |
| } catch (Exception ex) { |
| throw new IllegalStateException(ex); |
| } |
| } |
| return (JSObject) newPOJOImpl.call("fxBrwsrId", new Object[] { hash, id }); |
| } |
| |
| final Object undefined() { |
| if (undefined == null) { |
| undefined = engine.executeScript("undefined"); |
| } |
| return undefined; |
| } |
| |
| private int getArrayLength(Object val) throws JSException { |
| int length = ((Number) arraySizeFn().call("array", new Object[] { val, null })).intValue(); |
| return length; |
| } |
| |
| private Object[] toArray(int length, Object val) throws JSException { |
| Object[] arr = new Object[length]; |
| arraySizeFn().call("array", new Object[] { val, arr }); |
| checkArray(arr); |
| return arr; |
| } |
| |
| private void checkArray(Object[] arr) { |
| for (int i = 0; i < arr.length; i++) { |
| arr[i] = toJava(arr[i]); |
| } |
| } |
| |
| private final JSObject arraySizeFn() { |
| if (arraySize == null) { |
| try { |
| arraySize = (JSObject)defineJSFn(" var k = {};" |
| + " k.array = function(arr, to) {" |
| + " if (to === null) {" |
| + " if (Object.prototype.toString.call(arr) === '[object Array]') return arr.length;" |
| + " else return -1;" |
| + " } else {" |
| + " var l = arr.length;" |
| + " for (var i = 0; i < l; i++) to[i] = arr[i];" |
| + " return l;" |
| + " }" |
| + " };" |
| + " return k;", null, null |
| ).invokeImpl(null, false); |
| } catch (Exception ex) { |
| throw new IllegalStateException(ex); |
| } |
| } |
| return arraySize; |
| } |
| |
| @Override |
| public Object toJava(Object toJS) { |
| if (toJS == undefined()) { |
| return null; |
| } |
| if (!(toJS instanceof JSObject)) { |
| return toJS; |
| } |
| JSObject js = (JSObject) toJS; |
| int length = getArrayLength(toJS); |
| if (length != -1) { |
| Object[] arr = toArray(length, toJS); |
| return arr; |
| } |
| return values().realValue(js); |
| } |
| |
| @Override |
| public Object toJavaScript(Object value) { |
| return toJavaScript(value, true); |
| } |
| |
| final Object toJavaScript(Object value, boolean keep) { |
| if (value == null) { |
| return null; |
| } |
| if (value instanceof String) { |
| return value; |
| } |
| if (value instanceof Number) { |
| return value; |
| } |
| if (value instanceof JSObject) { |
| return value; |
| } |
| if (value instanceof Boolean) { |
| return value; |
| } |
| if (value instanceof Character) { |
| return (int) (char) (Character) value; |
| } |
| if (value instanceof Enum) { |
| return value; |
| } |
| if (value.getClass().isArray()) { |
| int len = Array.getLength(value); |
| Object[] copy = new Object[len]; |
| for (int i = 0; i < len; i++) { |
| copy[i] = toJavaScript(Array.get(value, i)); |
| } |
| final JSObject wrapArr = (JSObject)wrapArrFn().call("array", copy); // NOI18N |
| return wrapArr; |
| } |
| if (value.getClass().getName().endsWith("$JsCallbacks$")) { |
| return value; |
| } |
| return values().wrap(value, keep); |
| } |
| |
| |
| @Override public void execute(final Runnable r) { |
| if (Platform.isFxApplicationThread()) { |
| Closeable c = Fn.activate(this); |
| try { |
| r.run(); |
| } finally { |
| try { |
| c.close(); |
| } catch (IOException ex) { |
| // ignore |
| } |
| } |
| } else { |
| class Wrap implements Runnable { |
| @Override |
| public void run() { |
| Closeable c = Fn.activate(AbstractFXPresenter.this); |
| try { |
| r.run(); |
| } finally { |
| try { |
| c.close(); |
| } catch (IOException ex) { |
| // ignore |
| } |
| } |
| } |
| } |
| Platform.runLater(new Wrap()); |
| } |
| } |
| |
| private static final class JSFn extends Fn { |
| |
| private final JSObject fn; |
| private static int call; |
| private final int id; |
| private final boolean[] keepAlive; |
| |
| public JSFn(AbstractFXPresenter p, JSObject fn, int id, boolean[] keepAlive) { |
| super(p); |
| this.fn = fn; |
| this.id = id; |
| this.keepAlive = keepAlive; |
| } |
| |
| @Override |
| public Object invoke(Object thiz, Object... args) throws Exception { |
| return invokeImpl(thiz, true, args); |
| } |
| |
| final Object invokeImpl(Object thiz, boolean arrayChecks, Object... args) throws Exception { |
| try { |
| final AbstractFXPresenter presenter = (AbstractFXPresenter) presenter(); |
| if (LOG.isLoggable(Level.FINE)) { |
| LOG.log(Level.FINE, "calling {0} function #{1}", new Object[]{++call, id}); |
| LOG.log(Level.FINER, " thiz : {0}", thiz); |
| LOG.log(Level.FINER, " params: {0}", Arrays.asList(args)); |
| } |
| List<Object> all = new ArrayList<Object>(args.length + 1); |
| all.add(thiz == null ? presenter.undefined() : presenter.toJavaScript(thiz, true)); |
| for (int i = 0; i < args.length; i++) { |
| Object conv = args[i]; |
| if (arrayChecks) { |
| boolean alive = keepAlive == null || keepAlive[i]; |
| conv = presenter.toJavaScript(conv, alive); |
| } |
| all.add(conv); |
| } |
| Object ret = fn.call("call", all.toArray()); // NOI18N |
| if (ret == presenter.undefined()) { |
| return null; |
| } |
| if (!arrayChecks) { |
| return ret; |
| } |
| return presenter.toJava(ret); |
| } catch (Error t) { |
| t.printStackTrace(); |
| throw t; |
| } catch (Exception t) { |
| t.printStackTrace(); |
| throw t; |
| } |
| } |
| } |
| |
| private interface Ref extends Comparable<Ref> { |
| Object value(); |
| int id(); |
| JSObject jsObj(); |
| } |
| |
| private final class WeakRef extends WeakReference<Object> implements Ref { |
| private final int id; |
| private final JSObject js; |
| |
| WeakRef(Object value, int id, JSObject js) { |
| super(value); |
| this.id = id; |
| this.js = js; |
| } |
| |
| @Override |
| public Object value() { |
| return get(); |
| } |
| |
| @Override |
| public int id() { |
| return id; |
| } |
| |
| @Override |
| public JSObject jsObj() { |
| return js; |
| } |
| |
| @Override |
| public int compareTo(Ref o) { |
| return this.id() - o.id(); |
| } |
| } |
| |
| private final class StrongRef implements Ref { |
| private final Object value; |
| private final int id; |
| private final JSObject js; |
| |
| StrongRef(Object value, int id, JSObject js) { |
| this.value = value; |
| this.id = id; |
| this.js = js; |
| } |
| |
| @Override |
| public Object value() { |
| return value; |
| } |
| |
| @Override |
| public int id() { |
| return id; |
| } |
| |
| @Override |
| public JSObject jsObj() { |
| return js; |
| } |
| |
| @Override |
| public int compareTo(Ref o) { |
| return this.id() - o.id(); |
| } |
| } |
| |
| public final class JavaValues { |
| private final Map<Integer,NavigableSet<Ref>> values; |
| private int hash; |
| private int id; |
| |
| JavaValues() { |
| this.values = new HashMap<Integer,NavigableSet<Ref>>(); |
| } |
| |
| synchronized final JSObject wrap(Object pojo, boolean keep) { |
| int hash = System.identityHashCode(pojo); |
| NavigableSet<Ref> refs = values.get(hash); |
| if (refs != null) { |
| for (Ref ref : refs) { |
| if (ref.value() == pojo) { |
| return ref.jsObj(); |
| } |
| } |
| } else { |
| refs = new TreeSet<Ref>(); |
| values.put(hash, refs); |
| } |
| int id = findId(refs); |
| JSObject js = createPOJOWrapper(hash, id); |
| Ref newRef = keep ? new StrongRef(pojo, id, js) : new WeakRef(pojo, id, js); |
| refs.add(newRef); |
| return newRef.jsObj(); |
| } |
| |
| private int findId(NavigableSet<Ref> refs) { |
| if (refs.isEmpty()) { |
| return 0; |
| } |
| final Ref first = refs.first(); |
| int previous = first.id(); |
| if (previous > 0) { |
| return 0; |
| } |
| for (Ref ref : refs.tailSet(first, false)) { |
| int next = ref.id(); |
| if (previous + 1 < next) { |
| return previous + 1; |
| } |
| previous = next; |
| } |
| return previous + 1; |
| } |
| |
| public void hashAndId(int hash, int id) { |
| assert this.hash == -1; |
| assert this.id == -1; |
| this.hash = hash; |
| this.id = id; |
| } |
| |
| Object realValue(JSObject obj) { |
| Object java = obj.getMember("fxBrwsrId"); |
| if (java instanceof JSObject) { |
| for (;;) { |
| final int resultHash; |
| final int resultId; |
| final NavigableSet<Ref> refs; |
| synchronized (this) { |
| this.hash = -1; |
| this.id = -1; |
| obj.call("fxBrwsrId", new Object[] { this }); |
| assert this.hash != -1; |
| assert this.id != -1; |
| resultHash = this.hash; |
| resultId = this.id; |
| refs = values.get(resultHash); |
| if (refs == null) { |
| return null; |
| } |
| } |
| |
| Iterator<Ref> it = refs.iterator(); |
| while (it.hasNext()) { |
| Ref next = it.next(); |
| Object[] pojo = { next.value() }; |
| if (pojo[0] == null) { |
| it.remove(); |
| continue; |
| } |
| if (next.id() == resultId) { |
| return emitJavaObject(pojo, resultHash, resultId); |
| } |
| } |
| if (refs.isEmpty()) { |
| synchronized (this) { |
| values.remove(resultHash); |
| } |
| } |
| } |
| } |
| return obj; |
| } |
| |
| } |
| |
| Object emitJavaObject(Object[] pojo, int hash, int id) { |
| return pojo[0]; |
| } |
| |
| @Override |
| public synchronized Fn.Ref<AbstractFXPresenter> reference() { |
| if (id == null) { |
| id = new Id(this); |
| } |
| return id; |
| } |
| |
| @Override |
| public AbstractFXPresenter presenter() { |
| return this; |
| } |
| |
| private static final class Id extends WeakReference<AbstractFXPresenter> implements Fn.Ref<AbstractFXPresenter> { |
| Id(AbstractFXPresenter referent) { |
| super(referent); |
| } |
| |
| @Override |
| public Fn.Ref<AbstractFXPresenter> reference() { |
| return this; |
| } |
| |
| @Override |
| public AbstractFXPresenter presenter() { |
| return get(); |
| } |
| } |
| } |