1 /*
2 * Copyright (c) 1997, 2013, 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 com.sun.java.swing.plaf.windows;
27
28 import java.awt.*;
29 import java.awt.event.*;
30 import java.beans.PropertyChangeEvent;
31 import javax.swing.plaf.*;
32 import javax.swing.plaf.basic.BasicTextFieldUI;
33 import javax.swing.text.*;
34 import javax.swing.*;
35 import javax.swing.plaf.UIResource;
36 import sun.swing.DefaultLookup;
37
38
39
40 /**
41 * Provides the Windows look and feel for a text field. This
42 * is basically the following customizations to the default
43 * look-and-feel.
44 * <ul>
45 * <li>The border is beveled (using the standard control color).
46 * <li>The background is white by default.
47 * <li>The highlight color is a dark color, blue by default.
48 * <li>The foreground color is high contrast in the selected
49 * area, white by default. The unselected foreground is black.
50 * <li>The cursor blinks at about 1/2 second intervals.
51 * <li>The entire value is selected when focus is gained.
52 * <li>Shift-left-arrow and shift-right-arrow extend selection
53 * <li>Ctrl-left-arrow and ctrl-right-arrow act like home and
54 * end respectively.
55 * </ul>
56 * <p>
57 * <strong>Warning:</strong>
58 * Serialized objects of this class will not be compatible with
59 * future Swing releases. The current serialization support is appropriate
60 * for short term storage or RMI between applications running the same
61 * version of Swing. A future release of Swing will provide support for
62 * long term persistence.
63 *
64 * @author Timothy Prinzing
65 */
66 public class WindowsTextFieldUI extends BasicTextFieldUI
67 {
68 /**
69 * Creates a UI for a JTextField.
70 *
71 * @param c the text field
72 * @return the UI
73 */
74 public static ComponentUI createUI(JComponent c) {
75 return new WindowsTextFieldUI();
76 }
77
78 /**
79 * Paints a background for the view. This will only be
80 * called if isOpaque() on the associated component is
81 * true. The default is to paint the background color
82 * of the component.
83 *
84 * @param g the graphics context
85 */
86 protected void paintBackground(Graphics g) {
87 super.paintBackground(g);
88 }
89
90 /**
91 * Creates the caret for a field.
92 *
93 * @return the caret
94 */
95 protected Caret createCaret() {
96 return new WindowsFieldCaret();
97 }
98
99 /**
100 * WindowsFieldCaret has different scrolling behavior than
101 * DefaultCaret.
102 */
103 static class WindowsFieldCaret extends DefaultCaret implements UIResource {
104
105 public WindowsFieldCaret() {
106 super();
107 }
108
109 /**
110 * Adjusts the visibility of the caret according to
111 * the windows feel which seems to be to move the
112 * caret out into the field by about a quarter of
113 * a field length if not visible.
114 */
115 protected void adjustVisibility(Rectangle r) {
116 SwingUtilities.invokeLater(new SafeScroller(r));
117 }
118
119 /**
120 * Gets the painter for the Highlighter.
121 *
122 * @return the painter
123 */
124 protected Highlighter.HighlightPainter getSelectionPainter() {
125 return WindowsTextUI.WindowsPainter;
126 }
127
128
129 private class SafeScroller implements Runnable {
130 SafeScroller(Rectangle r) {
131 this.r = r;
132 }
133
134 public void run() {
135 JTextField field = (JTextField) getComponent();
136 if (field != null) {
137 TextUI ui = field.getUI();
138 int dot = getDot();
139 // PENDING: We need to expose the bias in DefaultCaret.
140 Position.Bias bias = Position.Bias.Forward;
141 Rectangle startRect = null;
142 try {
143 startRect = ui.modelToView(field, dot, bias);
144 } catch (BadLocationException ble) {}
145
146 Insets i = field.getInsets();
147 BoundedRangeModel vis = field.getHorizontalVisibility();
148 int x = r.x + vis.getValue() - i.left;
149 int quarterSpan = vis.getExtent() / 4;
150 if (r.x < i.left) {
151 vis.setValue(x - quarterSpan);
152 } else if (r.x + r.width > i.left + vis.getExtent()) {
153 vis.setValue(x - (3 * quarterSpan));
154 }
155 // If we scroll, our visual location will have changed,
156 // but we won't have updated our internal location as
157 // the model hasn't changed. This checks for the change,
158 // and if necessary, resets the internal location.
159 if (startRect != null) {
160 try {
161 Rectangle endRect;
162 endRect = ui.modelToView(field, dot, bias);
163 if (endRect != null && !endRect.equals(startRect)){
164 damage(endRect);
165 }
166 } catch (BadLocationException ble) {}
167 }
168 }
169 }
170
171 private Rectangle r;
172 }
173 }
174
175 }