1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.lwawt;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Insets;
import java.awt.SystemColor;
import java.awt.TextComponent;
import java.awt.event.TextEvent;
import java.awt.event.InputMethodListener;
import java.awt.event.InputMethodEvent;
import java.awt.im.InputMethodRequests;
import java.awt.peer.TextComponentPeer;
import sun.awt.AWTAccessor;
import javax.swing.JComponent;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.Document;
import javax.swing.text.JTextComponent;
/**
* Lightweight implementation of {@link TextComponentPeer}. Provides useful
* methods for {@link LWTextAreaPeer} and {@link LWTextFieldPeer}
*/
abstract class LWTextComponentPeer<T extends TextComponent, D extends JComponent>
extends LWComponentPeer<T, D>
implements DocumentListener, TextComponentPeer, InputMethodListener {
private volatile boolean firstChangeSkipped;
LWTextComponentPeer(final T target,
final PlatformComponent platformComponent) {
super(target, platformComponent);
if (!getTarget().isBackgroundSet()) {
getTarget().setBackground(SystemColor.text);
}
}
@Override
void initializeImpl() {
super.initializeImpl();
synchronized (getDelegateLock()) {
// This listener should be added before setText().
getTextComponent().getDocument().addDocumentListener(this);
}
setEditable(getTarget().isEditable());
setText(getTarget().getText());
getTarget().addInputMethodListener(this);
final int start = getTarget().getSelectionStart();
final int end = getTarget().getSelectionEnd();
if (end > start) {
select(start, end);
}
setCaretPosition(getTarget().getCaretPosition());
firstChangeSkipped = true;
}
@Override
protected final void disposeImpl() {
synchronized (getDelegateLock()) {
// visible caret has a timer thread which must be stopped
getTextComponent().getCaret().setVisible(false);
}
super.disposeImpl();
}
/**
* This method should be called under getDelegateLock().
*/
abstract JTextComponent getTextComponent();
public Dimension getMinimumSize(final int rows, final int columns) {
final Insets insets;
synchronized (getDelegateLock()) {
insets = getTextComponent().getInsets();
}
final int borderHeight = insets.top + insets.bottom;
final int borderWidth = insets.left + insets.right;
final FontMetrics fm = getFontMetrics(getFont());
return new Dimension(fm.charWidth(WIDE_CHAR) * columns + borderWidth,
fm.getHeight() * rows + borderHeight);
}
@Override
public final void setEditable(final boolean editable) {
synchronized (getDelegateLock()) {
getTextComponent().setEditable(editable);
}
}
@Override
public final String getText() {
synchronized (getDelegateLock()) {
return getTextComponent().getText();
}
}
@Override
public final void setText(final String l) {
synchronized (getDelegateLock()) {
// JTextArea.setText() posts two different events (remove & insert).
// Since we make no differences between text events,
// the document listener has to be disabled while
// JTextArea.setText() is called.
final Document document = getTextComponent().getDocument();
document.removeDocumentListener(this);
getTextComponent().setText(l);
revalidate();
if (firstChangeSkipped) {
postEvent(new TextEvent(getTarget(),
TextEvent.TEXT_VALUE_CHANGED));
}
document.addDocumentListener(this);
}
repaintPeer();
}
@Override
public final int getSelectionStart() {
synchronized (getDelegateLock()) {
return getTextComponent().getSelectionStart();
}
}
@Override
public final int getSelectionEnd() {
synchronized (getDelegateLock()) {
return getTextComponent().getSelectionEnd();
}
}
@Override
public final void select(final int selStart, final int selEnd) {
synchronized (getDelegateLock()) {
getTextComponent().select(selStart, selEnd);
}
repaintPeer();
}
@Override
public final void setCaretPosition(final int pos) {
synchronized (getDelegateLock()) {
getTextComponent().setCaretPosition(pos);
}
repaintPeer();
}
@Override
public final int getCaretPosition() {
synchronized (getDelegateLock()) {
return getTextComponent().getCaretPosition();
}
}
@Override
public final InputMethodRequests getInputMethodRequests() {
synchronized (getDelegateLock()) {
return getTextComponent().getInputMethodRequests();
}
}
//TODO IN XAWT we just return true..
@Override
public final boolean isFocusable() {
return getTarget().isFocusable();
}
protected final void revalidate() {
synchronized (getDelegateLock()) {
getTextComponent().invalidate();
getDelegate().validate();
}
}
protected final void postTextEvent() {
postEvent(new TextEvent(getTarget(), TextEvent.TEXT_VALUE_CHANGED));
synchronized (getDelegateLock()) {
revalidate();
}
}
@Override
public final void changedUpdate(final DocumentEvent e) {
postTextEvent();
}
@Override
public final void insertUpdate(final DocumentEvent e) {
postTextEvent();
}
@Override
public final void removeUpdate(final DocumentEvent e) {
postTextEvent();
}
@Override
public void inputMethodTextChanged(final InputMethodEvent event) {
synchronized (getDelegateLock()) {
AWTAccessor.getComponentAccessor().processEvent(getTextComponent(), event);
}
}
@Override
public void caretPositionChanged(final InputMethodEvent event) {
synchronized (getDelegateLock()) {
AWTAccessor.getComponentAccessor().processEvent(getTextComponent(), event);
}
}
}
|
