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From-SVN: r102074

1 files changed, 103 insertions, 0 deletions

diff --git a/libjava/classpath/java/awt/FocusTraversalPolicy.java b/libjava/classpath/java/awt/FocusTraversalPolicy.java
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+/* FocusTraversalPolicy.java -- 
+   Copyright (C) 2002 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;
+
+/**
+ * @since 1.4
+ */
+public abstract class FocusTraversalPolicy
+{
+  /**
+   * Creates a <code>FocusTraversalPolicy</code> object.
+   */
+  public FocusTraversalPolicy()
+  {
+    // Do nothing in here.
+  }
+
+  /**
+   * Returns the Component that should receive the focus after a Component.
+   *
+   * @exception IllegalArgumentException If root or current is null,
+   * or if root is not a focus cycle root of current.
+   */
+  public abstract Component getComponentAfter(Container root,
+                                              Component current);
+
+  /**
+   * Returns the Component that should receive the focus before a Component.
+   *
+   * @exception IllegalArgumentException If root or current is null,
+   * or if root is not a focus cycle root of current.
+   */
+  public abstract Component getComponentBefore(Container root,
+                                               Component current);
+
+  /**
+   * Returns the first Component in the traversal cycle.
+   *
+   * @exception IllegalArgumentException If root is null.
+   */
+  public abstract Component getFirstComponent(Container root);
+
+  /**
+   * Returns the last Component in the traversal cycle.
+   *
+   * @exception IllegalArgumentException If root is null.
+   */
+  public abstract Component getLastComponent(Container root);
+
+  /**
+   * Returns the default Component to focus.
+   *
+   * @exception IllegalArgumentException If root is null.
+   */
+  public abstract Component getDefaultComponent(Container root);
+
+  /**
+   * Returns the Component that should receive the focus when a Window is made
+   * visible for the first time.
+   *
+   * @exception IllegalArgumentException If window is null.
+   */
+  public Component getInitialComponent(Window window)
+  {
+    return getDefaultComponent(window);
+  }
+} // class FocusTraversalPolicy