--- a/src/java.desktop/share/classes/com/sun/java/swing/plaf/windows/WindowsDesktopManager.java	Mon Dec 04 10:12:46 2017 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,104 +0,0 @@
-/*
- * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-
-package com.sun.java.swing.plaf.windows;
-
-import javax.swing.DefaultDesktopManager;
-import javax.swing.JInternalFrame;
-import javax.swing.JLayeredPane;
-import java.awt.Component;
-import java.awt.Container;
-import java.awt.Dimension;
-import java.beans.PropertyVetoException;
-import java.util.Vector;
-import java.lang.ref.WeakReference;
-
-/**
- * This class implements a DesktopManager which more closely follows
- * the MDI model than the DefaultDesktopManager.  Unlike the
- * DefaultDesktopManager policy, MDI requires that the selected
- * and activated child frames are the same, and that that frame
- * always be the top-most window.
- * <p>
- * The maximized state is managed by the DesktopManager with MDI,
- * instead of just being a property of the individual child frame.
- * This means that if the currently selected window is maximized
- * and another window is selected, that new window will be maximized.
- *
- * @see javax.swing.DefaultDesktopManager
- * @author Thomas Ball
- */
-@SuppressWarnings("serial") // JDK-implementation class
-public class WindowsDesktopManager extends DefaultDesktopManager
-        implements java.io.Serializable, javax.swing.plaf.UIResource {
-
-    /* The frame which is currently selected/activated.
-     * We store this value to enforce MDI's single-selection model.
-     */
-    private WeakReference<JInternalFrame> currentFrameRef;
-
-    public void activateFrame(JInternalFrame f) {
-        JInternalFrame currentFrame = currentFrameRef != null ?
-            currentFrameRef.get() : null;
-        try {
-            super.activateFrame(f);
-            if (currentFrame != null && f != currentFrame) {
-                // If the current frame is maximized, transfer that
-                // attribute to the frame being activated.
-                if (!currentFrame.isClosed() && currentFrame.isMaximum() &&
-                    (f.getClientProperty("JInternalFrame.frameType") !=
-                    "optionDialog") ) {
-                    //Special case.  If key binding was used to select next
-                    //frame instead of minimizing the icon via the minimize
-                    //icon.
-                    if (!currentFrame.isIcon()) {
-                        currentFrame.setMaximum(false);
-                        if (f.isMaximizable()) {
-                            if (!f.isMaximum()) {
-                                f.setMaximum(true);
-                            } else if (f.isMaximum() && f.isIcon()) {
-                                f.setIcon(false);
-                            } else {
-                                f.setMaximum(false);
-                            }
-                        }
-                    }
-                }
-                if (currentFrame.isSelected()) {
-                    currentFrame.setSelected(false);
-                }
-            }
-
-            if (!f.isSelected()) {
-                f.setSelected(true);
-            }
-        } catch (PropertyVetoException e) {}
-        if (f != currentFrame) {
-            currentFrameRef = new WeakReference<JInternalFrame>(f);
-        }
-    }
-
-}