1 files changed, 129 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/GtkClipboardNotifier.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/GtkClipboardNotifier.java
new file mode 100644
index 000000000..8e5934557
--- /dev/null
+++ b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/GtkClipboardNotifier.java
@@ -0,0 +1,129 @@
+/* GtkClipboardNotifier.java -- Helper for announcing GtkSelection changes.
+   Copyright (C) 2005, 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.java.awt.peer.gtk;
+
+
+class GtkClipboardNotifier extends Thread
+{
+  /** Whether to announce a new GtkSelection has been set for CLIPBOARD. */
+  static private boolean announceClipboardChange;
+
+  /** Whether to announce a new GtkSelection has been set for PRIMARY. */
+  static private boolean announcePrimaryChange;
+
+  /**
+   * The one and only instance. All operations are synchronized on
+   * this.
+   */
+  private static GtkClipboardNotifier notifier = new GtkClipboardNotifier();
+
+  /**
+   * Creates a deamon thread that monitors this for change
+   * announcements.
+   */
+  private GtkClipboardNotifier()
+  {
+    super("GtkClipBoardNotifier");
+    setDaemon(true);
+    start();
+  }
+
+  /**
+   * Notifies that a new GtkSelection has to be announced.
+   *
+   * @param clipboard either the GtkClipboard.clipboard or the
+   * GtkClipboard.selection.
+   */
+  static void announce(GtkClipboard clipboard)
+  {
+    synchronized (notifier)
+      {
+        if (clipboard == GtkClipboard.clipboard)
+          announceClipboardChange = true;
+        else
+          announcePrimaryChange = true;
+        notifier.notifyAll();
+      }
+  }
+
+  public void run()
+  {
+    GtkClipboard clipboard;
+    while (true)
+      {
+        synchronized (this)
+          {
+            while (! announceClipboardChange && ! announcePrimaryChange)
+              {
+                try
+                  {
+                    this.wait();
+                  }
+                catch (InterruptedException ie)
+                  {
+                    // ignore
+                  }
+              }
+
+            if (announceClipboardChange)
+              {
+                clipboard = GtkClipboard.clipboard;
+                announceClipboardChange = false;
+              }
+            else
+              {
+                clipboard = GtkClipboard.selection;
+                announcePrimaryChange = false;
+              }
+          }
+
+        // Do the actual announcement without the lock held.  We will
+        // notice a new change after this notification has finished.
+        try
+          {
+            clipboard.setContents(new GtkSelection(clipboard), null);
+          }
+        catch (Throwable t)
+          {
+            // should never happen, but might if we have some faulty listener.
+            t.printStackTrace();
+          }
+      }
+  }
+}