1 /*
2 * Copyright (c) 2002, 2006, 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.synth;
27
28 import javax.swing.*;
29 import javax.swing.text.*;
30 import javax.swing.plaf.*;
31 import javax.swing.plaf.basic.BasicTextAreaUI;
32 import java.awt.*;
33 import java.awt.event.FocusListener;
34 import java.awt.event.FocusEvent;
35 import java.beans.PropertyChangeEvent;
36 import sun.swing.plaf.synth.SynthUI;
37
38 /**
39 * Provides the look and feel for a plain text editor in the
40 * Synth look and feel. In this implementation the default UI
41 * is extended to act as a simple view factory.
42 * <p>
43 * <strong>Warning:</strong>
44 * Serialized objects of this class will not be compatible with
45 * future Swing releases. The current serialization support is
46 * appropriate for short term storage or RMI between applications running
47 * the same version of Swing. As of 1.4, support for long term storage
48 * of all JavaBeans<sup><font size="-2">TM</font></sup>
49 * has been added to the <code>java.beans</code> package.
50 * Please see {@link java.beans.XMLEncoder}.
51 *
52 * @author Shannon Hickey
53 */
54 class SynthTextAreaUI extends BasicTextAreaUI implements SynthUI, FocusListener {
55 private SynthStyle style;
56
57 /**
58 * Creates a UI for a JTextArea.
59 *
60 * @param ta a text area
61 * @return the UI
62 */
63 public static ComponentUI createUI(JComponent ta) {
64 return new SynthTextAreaUI();
65 }
66
67 public void focusGained(FocusEvent e) {
68 getComponent().repaint();
69 }
70
71 public void focusLost(FocusEvent e) {
72 getComponent().repaint();
73 }
74
75 protected void installDefaults() {
76 // Installs the text cursor on the component
77 super.installDefaults();
78 updateStyle((JTextComponent)getComponent());
79 getComponent().addFocusListener(this);
80 }
81
82 protected void uninstallDefaults() {
83 SynthContext context = getContext(getComponent(), ENABLED);
84
85 getComponent().putClientProperty("caretAspectRatio", null);
86 getComponent().removeFocusListener(this);
87
88 style.uninstallDefaults(context);
89 context.dispose();
90 style = null;
91 super.uninstallDefaults();
92 }
93
94 public void installUI(JComponent c) {
95 super.installUI(c);
96 }
97
98 private void updateStyle(JTextComponent comp) {
99 SynthContext context = getContext(comp, ENABLED);
100 SynthStyle oldStyle = style;
101
102 style = SynthLookAndFeel.updateStyle(context, this);
103
104 if (style != oldStyle) {
105 SynthTextFieldUI.updateStyle(comp, context, getPropertyPrefix());
106
107 if (oldStyle != null) {
108 uninstallKeyboardActions();
109 installKeyboardActions();
110 }
111 }
112 context.dispose();
113 }
114
115 public SynthContext getContext(JComponent c) {
116 return getContext(c, getComponentState(c));
117 }
118
119 private SynthContext getContext(JComponent c, int state) {
120 return SynthContext.getContext(SynthContext.class, c,
121 SynthLookAndFeel.getRegion(c), style, state);
122 }
123
124 private int getComponentState(JComponent c) {
125 return SynthLookAndFeel.getComponentState(c);
126 }
127
128 public void update(Graphics g, JComponent c) {
129 SynthContext context = getContext(c);
130
131 SynthLookAndFeel.update(context, g);
132 context.getPainter().paintTextAreaBackground(context,
133 g, 0, 0, c.getWidth(), c.getHeight());
134 paint(context, g);
135 context.dispose();
136 }
137
138 protected void paint(SynthContext context, Graphics g) {
139 super.paint(g, getComponent());
140 }
141
142 protected void paintBackground(Graphics g) {
143 // Overriden to do nothing, all our painting is done from update/paint.
144 }
145
146 public void paintBorder(SynthContext context, Graphics g, int x,
147 int y, int w, int h) {
148 context.getPainter().paintTextAreaBorder(context, g, x, y, w, h);
149 }
150
151 /**
152 * This method gets called when a bound property is changed
153 * on the associated JTextComponent. This is a hook
154 * which UI implementations may change to reflect how the
155 * UI displays bound properties of JTextComponent subclasses.
156 * This is implemented to rebuild the View when the
157 * <em>WrapLine</em> or the <em>WrapStyleWord</em> property changes.
158 *
159 * @param evt the property change event
160 */
161 protected void propertyChange(PropertyChangeEvent evt) {
162 if (SynthLookAndFeel.shouldUpdateStyle(evt)) {
163 updateStyle((JTextComponent)evt.getSource());
164 }
165 super.propertyChange(evt);
166 }
167 }