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    1   /*
    2    * Copyright (c) 1998, 2010, 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 javax.swing.plaf.basic;
   27   
   28   import java.awt;
   29   import javax.swing;
   30   import javax.swing.border;
   31   import javax.swing.plaf;
   32   import java.awt;
   33   import java.awt.event;
   34   
   35   
   36   /**
   37    * BasicViewport implementation
   38    *
   39    * @author Rich Schiavi
   40    */
   41   public class BasicViewportUI extends ViewportUI {
   42   
   43       // Shared UI object
   44       private static ViewportUI viewportUI;
   45   
   46       public static ComponentUI createUI(JComponent c) {
   47           if(viewportUI == null) {
   48               viewportUI = new BasicViewportUI();
   49           }
   50           return viewportUI;
   51       }
   52   
   53       public void installUI(JComponent c) {
   54           super.installUI(c);
   55           installDefaults(c);
   56       }
   57   
   58       public void uninstallUI(JComponent c) {
   59           uninstallDefaults(c);
   60           super.uninstallUI(c);
   61       }
   62   
   63       protected void installDefaults(JComponent c) {
   64           LookAndFeel.installColorsAndFont(c,
   65                                            "Viewport.background",
   66                                            "Viewport.foreground",
   67                                            "Viewport.font");
   68           LookAndFeel.installProperty(c, "opaque", Boolean.TRUE);
   69       }
   70   
   71       protected void uninstallDefaults(JComponent c) {
   72       }
   73   }

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