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.panels.coreadm.client.swing.path;

    27 

    28 import java.awt.*;

    29 import java.beans.*;

    30 import javax.swing.*;

    31 import com.oracle.solaris.vp.util.swing.*;

    32 

    33 @SuppressWarnings({"serial"})

    34 public class TextPaneScrollPane extends ExtScrollPane {

    35     //

    36     // Instance data

    37     //

    38 

    39     private JTextPane textPane;

    40     private int columns;

    41     private int columnWidth;

    42     private int height;

    43 

    44     //

    45     // Constructors

    46     //

    47 

    48     public TextPaneScrollPane(JTextPane textPane, int columns) {

    49 	super(getPanel(textPane));

    50 	this.textPane = textPane;

    51 	this.columns = columns;

    52 

    53 	// Schedule recalculation of column width when font changes

    54 	textPane.addPropertyChangeListener("font",

    55 	    new PropertyChangeListener() {

    56 		@Override

    57 		public void propertyChange(PropertyChangeEvent e) {

    58 		    columnWidth = 0;

    59 		    height = 0;

    60 		}

    61 	    });

    62 

    63 	// Don't show scroll bars

    64 	setVerticalScrollBarPolicy(

    65 	    ScrollPaneConstants.VERTICAL_SCROLLBAR_NEVER);

    66 	setHorizontalScrollBarPolicy(

    67 	    ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

    68     }

    69 

    70     public TextPaneScrollPane(JTextPane textPane) {

    71 	this(textPane, GUIUtil.getTextFieldWidth());

    72     }

    73 

    74     //

    75     // Component methods

    76     //

    77 

    78     @Override

    79     public Dimension getPreferredSize() {

    80 	Dimension d = super.getPreferredSize();

    81 

    82 	// Limit height of scroll pane to initial height of text pane

    83 	if (height == 0) {

    84 	    height = d.height;

    85 	} else {

    86 	    d.height = height;

    87 	}

    88 

    89 	int columns = getColumns();

    90 	if (columns >= 0) {

    91 	    int columnWidth = getColumnWidth();

    92 	    Insets i = textPane.getInsets();

    93 	    d.width = i.left + i.right + columns * columnWidth;

    94 	}

    95 

    96 	return d;

    97     }

    98 

    99     //

   100     // TextPaneScrollPane methods

   101     //

   102 

   103     protected int getColumnWidth() {

   104         if (columnWidth == 0) {

   105             FontMetrics metrics = textPane.getFontMetrics(textPane.getFont());

   106             columnWidth = metrics.charWidth('m');

   107         }

   108         return columnWidth;

   109     }

   110 

   111     public JTextPane getTextPane() {

   112 	return textPane;

   113     }

   114 

   115     public int getColumns() {

   116 	return columns;

   117     }

   118 

   119     public void setColumns(int columns) {

   120 	this.columns = columns;

   121 

   122 	invalidate();

   123 

   124 	Container parent = getParent();

   125 	if (parent != null && parent instanceof JComponent) {

   126 	    ((JComponent)parent).revalidate();

   127 	}

   128     }

   129 

   130     //

   131     // Static methods

   132     //

   133 

   134     private static JPanel getPanel(JTextPane textPane) {

   135 	JPanel panel = new JPanel(new BorderLayout());

   136 	panel.add(textPane);

   137 	return panel;

   138     }

   139 }