1 /*

     2  * CDDL HEADER START

     3  *

     4  * The contents of this file are subject to the terms of the

     5  * Common Development and Distribution License (the "License").

     6  * You may not use this file except in compliance with the License.

     7  *

     8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

     9  * or http://www.opensolaris.org/os/licensing.

    10  * See the License for the specific language governing permissions

    11  * and limitations under the License.

    12  *

    13  * When distributing Covered Code, include this CDDL HEADER in each

    14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

    15  * If applicable, add the following below this CDDL HEADER, with the

    16  * fields enclosed by brackets "[]" replaced with your own identifying

    17  * information: Portions Copyright [yyyy] [name of copyright owner]

    18  *

    19  * CDDL HEADER END

    20  */

    21 

    22 /*

    23  * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.

    24  */

    25 

    26 package com.oracle.solaris.vp.util.swing;

    27 

    28 import java.awt.*;

    29 import javax.swing.*;

    30 

    31 @SuppressWarnings({"serial"})

    32 public class UnidirectionalScrollPane extends ExtScrollPane {

    33     //

    34     // Inner classes/enums

    35     //

    36 

    37     public enum Orientation {

    38 	HORIZONTAL, VERTICAL

    39     }

    40 

    41     protected static class ScrollablePanel extends JPanel

    42 	implements Scrollable {

    43 

    44 	//

    45 	// Instance data

    46 	//

    47 

    48 	private Orientation orientation;

    49 	private Component view;

    50 

    51 	//

    52 	// Constructors

    53 	//

    54 

    55 	public ScrollablePanel(Orientation orientation) {

    56 	    this.orientation = orientation;

    57 	    setLayout(new BorderLayout());

    58 	    setOpaque(false);

    59 	}

    60 

    61 	public ScrollablePanel(Orientation orientation, Component view) {

    62 	    this(orientation);

    63 	    setView(view);

    64 	}

    65 

    66 	//

    67 	// Scrollable methods

    68 	//

    69 

    70 	@Override

    71 	public Dimension getPreferredScrollableViewportSize() {

    72 	    return getPreferredSize();

    73 	}

    74 

    75 	@Override

    76 	public int getScrollableBlockIncrement(Rectangle visibleRect,

    77 	    int orientation, int direction) {

    78 	    if (view instanceof Scrollable) {

    79 		return ((Scrollable)view).getScrollableBlockIncrement(

    80 		    visibleRect, orientation, direction);

    81 	    }

    82 

    83 	    if (orientation == SwingConstants.VERTICAL) {

    84 		return visibleRect.height;

    85 	    }

    86 

    87 	    return visibleRect.width;

    88 	}

    89 

    90 	@Override

    91 	public boolean getScrollableTracksViewportHeight() {

    92 	    return orientation != Orientation.VERTICAL;

    93 	}

    94 

    95 	@Override

    96 	public boolean getScrollableTracksViewportWidth() {

    97 	    return orientation != Orientation.HORIZONTAL;

    98 	}

    99 

   100 	@Override

   101 	public int getScrollableUnitIncrement(Rectangle visibleRect,

   102 	    int orientation, int direction) {

   103 	    if (view instanceof Scrollable) {

   104 		return ((Scrollable)view).getScrollableUnitIncrement(

   105 		    visibleRect, orientation, direction);

   106 	    }

   107 	    return GUIUtil.getScrollableUnitIncrement();

   108 	}

   109 

   110 	//

   111 	// ScrollablePanel methods

   112 	//

   113 

   114 	public Component getView() {

   115 	    return view;

   116 	}

   117 

   118 	public void setView(Component view) {

   119 	    this.view = view;

   120 	    add(view, BorderLayout.CENTER);

   121 	}

   122     }

   123 

   124     //

   125     // Instance data

   126     //

   127 

   128     private Orientation orientation;

   129     private ScrollablePanel scrollablePanel;

   130 

   131     //

   132     // Constructors

   133     //

   134 

   135     public UnidirectionalScrollPane(Orientation orientation) {

   136 	this.orientation = orientation;

   137 	scrollablePanel = new ScrollablePanel(orientation);

   138     }

   139 

   140     public UnidirectionalScrollPane(Orientation orientation,

   141 	Component view) {

   142 	this(orientation);

   143 

   144 	// Stretch the view when the viewport is larger

   145 //	getViewport().setLayout(new SimpleViewportLayout(true));

   146 

   147 	setViewportView(view);

   148     }

   149 

   150     //

   151     // JScollPane methods

   152     //

   153 

   154     @Override

   155     public void setViewportView(Component view) {

   156 	scrollablePanel.setView(view);

   157 	super.setViewportView(scrollablePanel);

   158     }

   159 }