JaroslavTulach commented on a change in pull request #3349: URL: https://github.com/apache/netbeans/pull/3349#discussion_r765437662
########## File path: java/java.lsp.server/src/org/netbeans/modules/java/lsp/server/htmlui/Browser.java ########## @@ -0,0 +1,741 @@ +/** + * 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.modules.java.lsp.server.htmlui; + +import java.io.Closeable; +import java.io.File; +import java.io.FileNotFoundException; +import java.io.Flushable; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.OutputStream; +import java.io.Reader; +import java.io.Writer; +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URL; +import java.net.URLConnection; +import java.net.URLDecoder; +import java.nio.file.Files; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Queue; +import java.util.Random; +import java.util.UUID; +import java.util.concurrent.Executor; +import java.util.function.Consumer; +import java.util.function.Supplier; +import java.util.logging.Level; +import java.util.logging.Logger; +import org.netbeans.html.boot.spi.Fn; +import org.netbeans.html.boot.spi.Fn.Presenter; +import org.netbeans.html.presenters.spi.ProtoPresenter; +import org.netbeans.html.presenters.spi.ProtoPresenterBuilder; + +/** Browser based {@link Presenter}. It starts local server and + * launches browser that connects to it. Use {@link Browser.Config} to + * configure the actual browser to be started. + * <p> + * To use this presenter specify following dependency: + * <pre> + * <dependency> + * <groupId>org.netbeans.html.browser</groupId> + * <artifactId>browser</artifactId> + * <version><a target="blank" href="http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.dukescript.presenters%22%20AND%20a%3A%22browser%22";>1.x</a></version> + * </dependency> + * </pre> + */ +public final class Browser implements Fn.Presenter, Fn.KeepAlive, Flushable, +Executor, Closeable { + static final Logger LOG = Logger.getLogger(Browser.class.getName()); + private final Map<String,Command> SESSIONS = new HashMap<>(); + private final String app; + private HttpServer server; + private Runnable onPageLoad; + private Command current; + private final Config config; + private final Supplier<HttpServer<?, ?, ?, ?>> serverProvider; + + /** Default constructor. Reads configuration from properties. The actual browser to + * be launched can be influenced by value of + * <code>com.dukescript.presenters.browser</code> property. + * It can have following values: + * <ul> + * <li><b>GTK</b> - use Gtk WebKit implementation. Requires presence of + * appropriate native libraries</li> + * <li><b>AWT</b> - use {@link java.awt.Desktop#browse(java.net.URI)} to + * launch a browser</li> + * <li><b>NONE</b> - just launches the server, useful together with + * <code>com.dukescript.presenters.browserPort</code> property that + * can specify a fixed port to open the server at + * </li> + * <li>any other value is interpreted as a command which is then + * launched on a command line with one parameter - the URL to connect to</li> + * </ul> + * If the property is not specified the system tries <b>GTK</b> mode first, + * followed by <b>AWT</b> and then tries to execute <code>xdg-open</code> + * (default LINUX command to launch a browser from a shell script). + * <p> + * In addition to the above properties, it is possible to also enable + * debugging by setting <code>com.dukescript.presenters.browserDebug=true</code>. + * + * @throws Exception + */ + public Browser() { + this(new Config()); + } + + /** + * Browser configured by provided config. + * + * @param config the configuration + */ + public Browser(Config config) { + this(findCalleeClassName(), config, null); + } + + Browser(String app, Config config, Supplier<HttpServer<?,?,?, ?>> serverProvider) { + this.serverProvider = serverProvider != null ? serverProvider : () -> { + return new SimpleServer(config.random); + }; + this.app = app; + this.config = new Config(config); + } + + @Override + public final void execute(final Runnable r) { + current.execute(r); + } + + @Override + public void close() throws IOException { + if (server != null) { + server.shutdownNow(); + } + } + + HttpServer server() { + return server; + } + + static HttpServer findServer(Object obj) { + Command c; + if (obj instanceof Command) { + c = (Command) obj; + } else if (obj instanceof ProtoPresenter) { + c = ((ProtoPresenter) obj).lookup(Command.class); + } else { + throw new IllegalArgumentException("Cannot find server for " + obj); + } + return c.browser.server(); + } + + /** Shows URL in a browser. + * @param page the page to display in the browser + * @throws IOException if something goes wrong + */ + void show(URI page) throws IOException { + config.getBrowser().accept(page); + } + @Override + public Fn defineFn(String string, String... strings) { + throw new UnsupportedOperationException(); + } + + @Override + public void loadScript(Reader reader) throws Exception { + throw new UnsupportedOperationException(); + } + + @Override + public Fn defineFn(String string, String[] strings, boolean[] blns) { + throw new UnsupportedOperationException(); + } + + @Override + public void flush() throws IOException { + throw new UnsupportedOperationException(); + } + + private static URI pageURL(String protocol, HttpServer server, final String page) { + int port = server.getPort(); + try { + return new URI(protocol + "://localhost:" + port + page); + } catch (URISyntaxException ex) { + throw new IllegalStateException(ex); + } + } + + @Override + public final void displayPage(URL page, Runnable onPageLoad) { + try { + this.onPageLoad = onPageLoad; + this.server = serverProvider.get(); + int from = 8080; + int to = 65535; + int port = config.getPort(); + if (port != -1) { + from = to = port; + } + server.init(from, to); + + String prefix = "/" + new UUID(config.random.nextLong(), config.random.nextLong()).toString(); + Review comment: a65a7de synchronizes the `SimpleServer` class with https://github.com/apache/netbeans-html4j/pull/26/commits/9bc1429686ea37037bba33d9d3a8123ae9ff1148 -- This is an automated message from the Apache Git Service. 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