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    1   /*
    2    * Copyright (c) 1997, 1999, 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;
   27   
   28   
   29   /**
   30    * Constants used with the JScrollPane component.
   31    *
   32    * @author Hans Muller
   33    */
   34   public interface ScrollPaneConstants
   35   {
   36       /**
   37        * Identifies a "viewport" or display area, within which
   38        * scrolled contents are visible.
   39        */
   40       String VIEWPORT = "VIEWPORT";
   41       /** Identifies a vertical scrollbar. */
   42       String VERTICAL_SCROLLBAR = "VERTICAL_SCROLLBAR";
   43       /** Identifies a horizonal scrollbar. */
   44       String HORIZONTAL_SCROLLBAR = "HORIZONTAL_SCROLLBAR";
   45       /**
   46        * Identifies the area along the left side of the viewport between the
   47        * upper left corner and the lower left corner.
   48        */
   49       String ROW_HEADER = "ROW_HEADER";
   50       /**
   51        * Identifies the area at the top the viewport between the
   52        * upper left corner and the upper right corner.
   53        */
   54       String COLUMN_HEADER = "COLUMN_HEADER";
   55       /** Identifies the lower left corner of the viewport. */
   56       String LOWER_LEFT_CORNER = "LOWER_LEFT_CORNER";
   57       /** Identifies the lower right corner of the viewport. */
   58       String LOWER_RIGHT_CORNER = "LOWER_RIGHT_CORNER";
   59       /** Identifies the upper left corner of the viewport. */
   60       String UPPER_LEFT_CORNER = "UPPER_LEFT_CORNER";
   61       /** Identifies the upper right corner of the viewport. */
   62       String UPPER_RIGHT_CORNER = "UPPER_RIGHT_CORNER";
   63   
   64       /** Identifies the lower leading edge corner of the viewport. The leading edge
   65        * is determined relative to the Scroll Pane's ComponentOrientation property.
   66        */
   67       String LOWER_LEADING_CORNER = "LOWER_LEADING_CORNER";
   68       /** Identifies the lower trailing edge corner of the viewport. The trailing edge
   69        * is determined relative to the Scroll Pane's ComponentOrientation property.
   70        */
   71       String LOWER_TRAILING_CORNER = "LOWER_TRAILING_CORNER";
   72       /** Identifies the upper leading edge corner of the viewport.  The leading edge
   73        * is determined relative to the Scroll Pane's ComponentOrientation property.
   74        */
   75       String UPPER_LEADING_CORNER = "UPPER_LEADING_CORNER";
   76       /** Identifies the upper trailing edge corner of the viewport. The trailing edge
   77        * is determined relative to the Scroll Pane's ComponentOrientation property.
   78        */
   79       String UPPER_TRAILING_CORNER = "UPPER_TRAILING_CORNER";
   80   
   81       /** Identifies the vertical scroll bar policy property. */
   82       String VERTICAL_SCROLLBAR_POLICY = "VERTICAL_SCROLLBAR_POLICY";
   83       /** Identifies the horizontal scroll bar policy property. */
   84       String HORIZONTAL_SCROLLBAR_POLICY = "HORIZONTAL_SCROLLBAR_POLICY";
   85   
   86       /**
   87        * Used to set the vertical scroll bar policy so that
   88        * vertical scrollbars are displayed only when needed.
   89        */
   90       int VERTICAL_SCROLLBAR_AS_NEEDED = 20;
   91       /**
   92        * Used to set the vertical scroll bar policy so that
   93        * vertical scrollbars are never displayed.
   94        */
   95       int VERTICAL_SCROLLBAR_NEVER = 21;
   96       /**
   97        * Used to set the vertical scroll bar policy so that
   98        * vertical scrollbars are always displayed.
   99        */
  100       int VERTICAL_SCROLLBAR_ALWAYS = 22;
  101   
  102       /**
  103        * Used to set the horizontal scroll bar policy so that
  104        * horizontal scrollbars are displayed only when needed.
  105        */
  106       int HORIZONTAL_SCROLLBAR_AS_NEEDED = 30;
  107       /**
  108        * Used to set the horizontal scroll bar policy so that
  109        * horizontal scrollbars are never displayed.
  110        */
  111       int HORIZONTAL_SCROLLBAR_NEVER = 31;
  112       /**
  113        * Used to set the horizontal scroll bar policy so that
  114        * horizontal scrollbars are always displayed.
  115        */
  116       int HORIZONTAL_SCROLLBAR_ALWAYS = 32;
  117   }

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