1 /*
2 * Copyright (c) 2002, 2014, 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
37 /**
38 * Provides the look and feel for a plain text editor in the
39 * Synth look and feel. In this implementation the default UI
40 * is extended to act as a simple view factory.
41 * <p>
42 * <strong>Warning:</strong>
43 * Serialized objects of this class will not be compatible with
44 * future Swing releases. The current serialization support is
45 * appropriate for short term storage or RMI between applications running
46 * the same version of Swing. As of 1.4, support for long term storage
47 * of all JavaBeans™
48 * has been added to the {@code java.beans} package.
49 * Please see {@link java.beans.XMLEncoder}.
50 *
51 * @author Shannon Hickey
52 * @since 1.7
53 */
54 @SuppressWarnings("serial") // Same-version serialization only
55 public class SynthTextAreaUI extends BasicTextAreaUI implements SynthUI {
56 private Handler handler = new Handler();
57 private SynthStyle style;
58
59 /**
60 * Creates a UI object for a JTextArea.
61 *
62 * @param ta a text area
63 * @return the UI object
64 */
65 public static ComponentUI createUI(JComponent ta) {
66 return new SynthTextAreaUI();
67 }
68
69 /**
70 * {@inheritDoc}
71 */
72 @Override
73 protected void installDefaults() {
74 // Installs the text cursor on the component
75 super.installDefaults();
76 updateStyle(getComponent());
77 getComponent().addFocusListener(handler);
78 }
79
80 /**
81 * {@inheritDoc}
82 */
83 @Override
84 protected void uninstallDefaults() {
85 SynthContext context = getContext(getComponent(), ENABLED);
86
87 getComponent().putClientProperty("caretAspectRatio", null);
88 getComponent().removeFocusListener(handler);
89
90 style.uninstallDefaults(context);
91 context.dispose();
92 style = null;
93 super.uninstallDefaults();
94 }
95
96 private void updateStyle(JTextComponent comp) {
97 SynthContext context = getContext(comp, ENABLED);
98 SynthStyle oldStyle = style;
99
100 style = SynthLookAndFeel.updateStyle(context, this);
101
102 if (style != oldStyle) {
103 SynthTextFieldUI.updateStyle(comp, context, getPropertyPrefix());
104
105 if (oldStyle != null) {
106 uninstallKeyboardActions();
107 installKeyboardActions();
108 }
109 }
110 context.dispose();
111 }
112
113 /**
114 * {@inheritDoc}
115 */
116 @Override
117 public SynthContext getContext(JComponent c) {
118 return getContext(c, SynthLookAndFeel.getComponentState(c));
119 }
120
121 private SynthContext getContext(JComponent c, int state) {
122 return SynthContext.getContext(c, style, state);
123 }
124
125 /**
126 * Notifies this UI delegate to repaint the specified component.
127 * This method paints the component background, then calls
128 * the {@link #paint(SynthContext,Graphics)} method.
129 *
130 * <p>In general, this method does not need to be overridden by subclasses.
131 * All Look and Feel rendering code should reside in the {@code paint} method.
132 *
133 * @param g the {@code Graphics} object used for painting
134 * @param c the component being painted
135 * @see #paint(SynthContext,Graphics)
136 */
137 @Override
138 public void update(Graphics g, JComponent c) {
139 SynthContext context = getContext(c);
140
141 SynthLookAndFeel.update(context, g);
142 context.getPainter().paintTextAreaBackground(context,
143 g, 0, 0, c.getWidth(), c.getHeight());
144 paint(context, g);
145 context.dispose();
146 }
147
148 /**
149 * Paints the specified component.
150 *
151 * @param context context for the component being painted
152 * @param g the {@code Graphics} object used for painting
153 * @see #update(Graphics,JComponent)
154 */
155 protected void paint(SynthContext context, Graphics g) {
156 super.paint(g, getComponent());
157 }
158
159 /**
160 * {@inheritDoc}
161 *
162 * Overridden to do nothing.
163 */
164 @Override
165 protected void paintBackground(Graphics g) {
166 // Overriden to do nothing, all our painting is done from update/paint.
167 }
168
169 /**
170 * {@inheritDoc}
171 */
172 @Override
173 public void paintBorder(SynthContext context, Graphics g, int x,
174 int y, int w, int h) {
175 context.getPainter().paintTextAreaBorder(context, g, x, y, w, h);
176 }
177
178 /**
179 * This method gets called when a bound property is changed
180 * on the associated JTextComponent. This is a hook
181 * which UI implementations may change to reflect how the
182 * UI displays bound properties of JTextComponent subclasses.
183 * This is implemented to rebuild the View when the
184 * <em>WrapLine</em> or the <em>WrapStyleWord</em> property changes.
185 *
186 * @param evt the property change event
187 */
188 @Override
189 protected void propertyChange(PropertyChangeEvent evt) {
190 if (SynthLookAndFeel.shouldUpdateStyle(evt)) {
191 updateStyle((JTextComponent)evt.getSource());
192 }
193 super.propertyChange(evt);
194 }
195
196 private final class Handler implements FocusListener {
197 public void focusGained(FocusEvent e) {
198 getComponent().repaint();
199 }
200
201 public void focusLost(FocusEvent e) {
202 getComponent().repaint();
203 }
204 }
205 }
--- EOF ---