Initial revision

[pf3gnuchains/gcc-fork.git] / libjava / classpath / java / awt / datatransfer / Clipboard.java

diff --git a/libjava/classpath/java/awt/datatransfer/Clipboard.java b/libjava/classpath/java/awt/datatransfer/Clipboard.java
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+/* Clipboard.java -- Class for transferring data via cut and paste.
+   Copyright (C) 1999, 2001 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 java.awt.datatransfer;
+
+/**
+ * This class allows data to be transferred using a cut and paste type
+ * mechanism.
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ */
+public class Clipboard
+{
+  /**
+   * The data being transferred.
+   */
+  protected Transferable contents;
+
+  /**
+   * The owner of this clipboard.
+   */
+  protected ClipboardOwner owner;
+
+  // The clipboard name
+  private String name;
+
+  /**
+   * Initializes a new instance of <code>Clipboard</code> with the
+   * specified name.
+   *
+   * @param name The clipboard name.
+   */
+  public Clipboard(String name)
+  {
+    this.name = name;
+  }
+
+  /**
+    * Returns the name of the clipboard.
+    */
+  public String getName()
+  {
+    return name;
+  }
+
+  /**
+   * Returns the contents of the clipboard.
+   *
+   * @param requestor The object requesting the contents.
+   *
+   * @exception IllegalStateException If the clipboard is currently unavailable
+   */
+  public synchronized Transferable getContents(Object requestor)
+  {
+    return contents;
+  }
+
+  /**
+   * Sets the content and owner of this clipboard.
+   * If the given owner is different from the current owner
+   * then lostOwnership is called on the current owner.
+   * XXX - is this called with the old or new contents.
+   *
+   * @param contents The new clipboard contents.
+   * @param owner The new clipboard owner
+   *
+   * @exception IllegalStateException If the clipboard is currently unavailable
+   */
+  public synchronized void setContents(Transferable contents, ClipboardOwner owner)
+  {
+    if (this.owner != owner)
+      if (this.owner != null)
+        this.owner.lostOwnership(this, contents);
+ 
+    this.owner = owner;
+    this.contents = contents;
+  }
+}
+