请教 JTable 里的单元格如何使得双击进入单元格后，单元格的内容处于全选中状态
http://bbs.csdn.net/topics/390195204
————————————————————————————————————————
java 达人,
最近在开发一个 java 模块，用到了 JTable。现在对 JTable 里的单元格的操作中，在双击进入单元格后，单元格的内容不是全选中状态。
请问有啥办法使得双击进入单元格后，单元格的内容处于全选中状态？如下面的图片所示
十分感谢！
下面是已经写好的代码：
|
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
|
import
java.awt.BorderLayout;
import
java.awt.Component;
import
java.awt.Dimension;
import
java.awt.FlowLayout;
import
java.awt.GridLayout;
import
java.awt.event.MouseEvent;
import
java.awt.event.MouseListener;
import
java.text.SimpleDateFormat;
import
java.util.Date;
import
java.util.Vector;
import
javax.swing.JButton;
import
javax.swing.JFrame;
import
javax.swing.JLabel;
import
javax.swing.JPanel;
import
javax.swing.JScrollPane;
import
javax.swing.JTable;
import
javax.swing.ListSelectionModel;
import
javax.swing.ScrollPaneLayout;
import
javax.swing.SwingConstants;
import
javax.swing.event.ListSelectionEvent;
import
javax.swing.event.ListSelectionListener;
import
javax.swing.table.DefaultTableCellRenderer;
import
javax.swing.table.DefaultTableModel;
import
javax.swing.table.TableCellRenderer;
import
javax.swing.table.TableColumn;
public
class
GlobalVari_6
extends
JFrame {
private
static
final
long
serialVersionUID = 1L;
private
static
double
select =
0
;
private
static
int
rowIndex =
0
;
public
JTable table =
null
;
// 表格方法使用
public
GlobalVari_6() {
init();
this
.setTitle(
"Global Variables"
);
this
.setSize(
new
Dimension(
650
,
400
));
this
.setLocationRelativeTo(
null
);
this
.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this
.setVisible(
true
);
// this.setResizable(false);
}
private
void
init() {
Vector<String> colHeader =
new
Vector<String>();
Vector<Vector<String>> dataVec =
new
Vector<Vector<String>>();
colHeader.add(
" Variable"
);
colHeader.add(
"Value "
);
colHeader.add(
"Time "
);
table =
new
JTable(dataVec, colHeader) {
private
static
final
long
serialVersionUID = 1L;
public
boolean
isCellEditable(
int
row,
int
column) {
if
(column >
1
) {
return
false
;
}
else
{
return
true
;
}
}
};
// 2设置表头行高
table.getTableHeader().setPreferredSize(
new
Dimension(
0
,
20
));
// 3设置表内容行高
table.setRowHeight(
20
);
// 4设置单选模式
table.getSelectionModel().setSelectionMode(
ListSelectionModel.SINGLE_SELECTION);
// 5设置单元格不可拖动
table.getTableHeader().setReorderingAllowed(
false
);
// 6设置不可改变列宽
table.getTableHeader().setResizingAllowed(
false
);
// 7设置列宽
table.getColumnModel().getColumn(
0
).setPreferredWidth(
95
);
table.getColumnModel().getColumn(
1
).setPreferredWidth(
55
);
table.getColumnModel().getColumn(
2
).setPreferredWidth(
30
);
// 注意索引越界
DefaultTableCellRenderer right =
new
DefaultTableCellRenderer();
// right.setHorizontalAlignment(JLabel.RIGHT);
right.setHorizontalAlignment(SwingConstants.RIGHT);
table.getColumnModel().getColumn(
1
).setCellRenderer(right);
table.getColumnModel().getColumn(
2
).setCellRenderer(right);
// table.getColumn(table.getColumnName(1)).setHeaderRenderer(right);
// table.getTableHeader().setDefaultRenderer(new HeaderRenderer(table));
((DefaultTableCellRenderer) table.getTableHeader().getDefaultRenderer())
.setHorizontalAlignment(JLabel.RIGHT);
TableColumn column = table.getColumnModel().getColumn(
0
);
MultiLineHeaderRenderer headerRenderer =
new
MultiLineHeaderRenderer(
SwingConstants.LEFT, SwingConstants.BOTTOM);
column.setHeaderRenderer(headerRenderer);
/*
* column = table.getColumnModel().getColumn(1); headerRenderer = new
* MultiLineHeaderRenderer( SwingConstants.LEFT, SwingConstants.BOTTOM);
* column.setHeaderRenderer(headerRenderer);
*/
final
JButton buttonAdd =
new
JButton(
"Add"
);
final
JButton buttonDel =
new
JButton(
"Delete"
);
final
JButton buttonCls =
new
JButton(
"Close"
);
rowIndex = table.getSelectedRow();
System.out.println(
"index:"
+ rowIndex);
// 监听事件
table.getSelectionModel().addListSelectionListener(
new
ListSelectionListener() {
public
void
valueChanged(ListSelectionEvent e) {
if
(e.getValueIsAdjusting()) {
// 连续操作
rowIndex = table.getSelectedRow();
if
(rowIndex != -
1
) {
System.out.println(
"表格行被选中"
+ rowIndex);
buttonDel.setEnabled(
true
);
select =
1
;
}
}
}
});
JScrollPane scrollPane =
new
JScrollPane();
scrollPane.setLayout(
new
ScrollPaneLayout());
scrollPane.setViewportView(table);
scrollPane.setBounds(
5
,
5
,
515
,
350
);
this
.getContentPane().add(scrollPane);
buttonAdd.setEnabled(
true
);
buttonDel.setEnabled(
false
);
buttonCls.setEnabled(
true
);
JPanel panel =
new
JPanel();
panel.setBounds(
520
,
5
,
10
,
350
);
this
.getContentPane().add(panel);
panel.setLayout(
null
);
panel.add(buttonAdd);
buttonAdd.setSize(
100
,
22
);
buttonAdd.setLocation(
530
,
6
);
panel.add(buttonDel);
buttonDel.setSize(
100
,
22
);
buttonDel.setLocation(
530
,
40
);
panel.add(buttonCls);
buttonCls.setSize(
100
,
22
);
buttonCls.setLocation(
530
,
322
);
buttonAdd.addMouseListener(
new
MouseListener() {
public
void
mouseClicked(MouseEvent e) {
DefaultTableModel model = (DefaultTableModel) table.getModel();
int
rownum = table.getRowCount() +
1
;
boolean
exist =
true
;
for
(
int
i =
0
; i < model.getRowCount(); i++) {
if
(model.getValueAt(i,
0
).equals(
"gvar"
+ rownum)) {
exist =
false
;
break
;
}
}
if
(exist ==
true
)
model.addRow(
new
Object[] {
"gvar"
+ rownum,
""
,
new
SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss"
)
.format(
new
Date()) });
}
public
void
mousePressed(MouseEvent e) {
}
public
void
mouseReleased(MouseEvent e) {
}
public
void
mouseEntered(MouseEvent e) {
}
public
void
mouseExited(MouseEvent e) {
}
});
buttonDel.addMouseListener(
new
MouseListener() {
public
void
mouseClicked(MouseEvent e) {
if
(select ==
1
) {
DefaultTableModel model = (DefaultTableModel) table
.getModel();
model.removeRow(rowIndex);
select =
0
;
buttonDel.setEnabled(
false
);
}
}
public
void
mousePressed(MouseEvent e) {
}
public
void
mouseReleased(MouseEvent e) {
}
public
void
mouseEntered(MouseEvent e) {
}
public
void
mouseExited(MouseEvent e) {
}
});
buttonCls.addMouseListener(
new
MouseListener() {
public
void
mouseClicked(MouseEvent e) {
setVisible(
false
);
}
public
void
mousePressed(MouseEvent e) {
}
public
void
mouseReleased(MouseEvent e) {
}
public
void
mouseEntered(MouseEvent e) {
}
public
void
mouseExited(MouseEvent e) {
}
});
this
.pack();
}
public
static
void
main(String[] args) {
new
GlobalVari_6();
}
}
|
在你的init较后面的地方加。
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
TableCellEditor tce = table.getDefaultEditor(String.
class
);
if
(tce
instanceof
DefaultCellEditor) {
DefaultCellEditor dce = (DefaultCellEditor) tce;
final
Component c = dce.getComponent();
c.addFocusListener(
new
FocusListener() {
@Override
public
void
focusGained(FocusEvent arg0) {
System.out.println(
"focusGained"
);
if
(c
instanceof
JTextComponent) {
((JTextComponent) c).selectAll();
}
}
@Override
public
void
focusLost(FocusEvent arg0) {
}
});
}
|
但是如果你的JTable里某列自己加过JTextField等。
例如：
写过类似这样的
|
1
|
column.setCellEditor(
new
DefaultCellEditor(textField));
|
那么下面那段也许也要加上。
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
int
count = table.getColumnModel().getColumnCount();
for
(
int
i =
0
; i < count; i++) {
TableColumn tableColumn = table.getColumnModel().getColumn(i);
if
(tableColumn.getCellEditor() ==
null
) {
continue
;
}
if
(tableColumn.getCellEditor()
instanceof
DefaultCellEditor) {
DefaultCellEditor dce = (DefaultCellEditor) tableColumn
.getCellEditor();
final
Component c = dce.getComponent();
c.addFocusListener(
new
FocusListener() {
@Override
public
void
focusGained(FocusEvent arg0) {
if
(c
instanceof
JTextComponent) {
((JTextComponent) c).selectAll();
}
}
@Override
public
void
focusLost(FocusEvent arg0) {
}
});
}
}
|