| /* PluginAppletViewer.java -- manages embeddable applet windows |
| Copyright (C) 2003, 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.classpath.tools.appletviewer; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.net.MalformedURLException; |
| import java.nio.charset.Charset; |
| import java.util.HashMap; |
| |
| |
| /** |
| * PluginAppletViewer communicates through pipes with a web browser |
| * plugin. A PluginAppletViewer manages applet windows that may be |
| * embedded into web pages. |
| */ |
| class PluginAppletViewer |
| { |
| // A mapping of instance IDs to PluginAppletWindows. |
| static HashMap appletWindows = new HashMap (); |
| |
| private static BufferedReader pluginInputStream; |
| private static BufferedWriter pluginOutputStream; |
| |
| static void start(InputStream inputStream, OutputStream outputStream) |
| throws MalformedURLException, IOException |
| { |
| // Set up input and output pipes. Use UTF-8 encoding. |
| pluginInputStream = |
| new BufferedReader(new InputStreamReader(inputStream, |
| Charset.forName("UTF-8"))); |
| pluginOutputStream = |
| new BufferedWriter(new OutputStreamWriter(outputStream, |
| Charset.forName("UTF-8"))); |
| |
| write("running"); |
| |
| // Read first message. |
| String message = read(); |
| |
| PluginAppletWindow currentWindow = null; |
| |
| while (true) |
| { |
| if (message.startsWith("instance")) |
| { |
| // Read applet instance identifier. |
| String key = message.substring(9); |
| |
| if (appletWindows.get(key) == null) |
| appletWindows.put(key, new PluginAppletWindow()); |
| |
| currentWindow = (PluginAppletWindow) appletWindows.get(key); |
| } |
| else if (message.startsWith("tag")) |
| { |
| int pos = message.indexOf(' ', 4); |
| String documentbase = message.substring(4, pos); |
| String tag = message.substring(pos + 1); |
| currentWindow.setParser(tag, documentbase); |
| } |
| else if (message.startsWith("handle")) |
| { |
| long handle = Long.parseLong(message.substring(7)); |
| |
| currentWindow.setHandle(handle); |
| } |
| else if (message.startsWith("width")) |
| { |
| int width = Integer.parseInt(message.substring(6)); |
| |
| currentWindow.setSize(width, currentWindow.getHeight()); |
| } |
| else if (message.startsWith("height")) |
| { |
| int height = Integer.parseInt(message.substring(7)); |
| |
| currentWindow.setSize(currentWindow.getWidth(), height); |
| } |
| else if (message.startsWith("destroy")) |
| { |
| appletWindows.remove(currentWindow); |
| currentWindow.dispose(); |
| } |
| |
| // Read next message. |
| message = read(); |
| } |
| } |
| |
| /** |
| * Write string to plugin. |
| * |
| * @param message the message to write |
| * |
| * @exception IOException if an error occurs |
| */ |
| static void write(String message) throws IOException |
| { |
| pluginOutputStream.write(message, 0, message.length()); |
| pluginOutputStream.newLine(); |
| pluginOutputStream.flush(); |
| |
| System.err.println(" PIPE: applet viewer wrote: " + message); |
| } |
| |
| /** |
| * Read string from plugin. |
| * |
| * @return the read string |
| * |
| * @exception IOException if an error occurs |
| */ |
| static String read() throws IOException |
| { |
| String message = pluginInputStream.readLine(); |
| |
| System.err.println(" PIPE: applet viewer read: " + message); |
| |
| if (message == null || message.equals("shutdown")) |
| { |
| // Close input/output channels to plugin. |
| pluginInputStream.close(); |
| pluginOutputStream.close(); |
| |
| System.err.println("appletviewer: exiting plugin applet viewer"); |
| System.exit(0); |
| } |
| |
| return message; |
| } |
| } |