Home » openjdk-7 » sun » awt » X11 » [javadoc | source]

    1   /*
    2    * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package sun.awt.X11;
   27   
   28   
   29   import java.io.File;
   30   import java.io.IOException;
   31   import java.net.MalformedURLException;
   32   import java.net.URI;
   33   
   34   import java.awt.Desktop.Action;
   35   import java.awt.peer.DesktopPeer;
   36   
   37   
   38   /**
   39    * Concrete implementation of the interface <code>DesktopPeer</code> for
   40    * the Gnome desktop on Linux and Unix platforms.
   41    *
   42    * @see DesktopPeer
   43    */
   44   public class XDesktopPeer implements DesktopPeer {
   45   
   46       private static boolean nativeLibraryLoaded = false;
   47       private static boolean initExecuted = false;
   48   
   49       private static void initWithLock(){
   50           XToolkit.awtLock();
   51           try {
   52               if (!initExecuted) {
   53                   nativeLibraryLoaded = init();
   54               }
   55           } finally {
   56               initExecuted = true;
   57               XToolkit.awtUnlock();
   58           }
   59       }
   60   
   61       //package-private
   62       XDesktopPeer(){
   63           initWithLock();
   64       }
   65   
   66       static boolean isDesktopSupported() {
   67           initWithLock();
   68           return nativeLibraryLoaded;
   69       }
   70   
   71       public boolean isSupported(Action type) {
   72           return type != Action.PRINT && type != Action.EDIT;
   73       }
   74   
   75       public void open(File file) throws IOException {
   76           try {
   77               launch(file.toURI());
   78           } catch (MalformedURLException e) {
   79               throw new IOException(file.toString());
   80           }
   81       }
   82   
   83       public void edit(File file) throws IOException {
   84           throw new UnsupportedOperationException("The current platform " +
   85               "doesn't support the EDIT action.");
   86       }
   87   
   88       public void print(File file) throws IOException {
   89           throw new UnsupportedOperationException("The current platform " +
   90               "doesn't support the PRINT action.");
   91       }
   92   
   93       public void mail(URI uri) throws IOException {
   94           launch(uri);
   95       }
   96   
   97       public void browse(URI uri) throws IOException {
   98           launch(uri);
   99       }
  100   
  101       private void launch(URI uri) throws IOException {
  102           byte[] uriByteArray = ( uri.toString() + '\0' ).getBytes();
  103           boolean result = false;
  104           XToolkit.awtLock();
  105           try {
  106               if (!nativeLibraryLoaded) {
  107                   throw new IOException("Failed to load native libraries.");
  108               }
  109               result = gnome_url_show(uriByteArray);
  110           } finally {
  111               XToolkit.awtUnlock();
  112           }
  113           if (!result) {
  114               throw new IOException("Failed to show URI:" + uri);
  115           }
  116       }
  117   
  118       private native boolean gnome_url_show(byte[] url);
  119       private static native boolean init();
  120   }

Home » openjdk-7 » sun » awt » X11 » [javadoc | source]