概述
转载地址: http://www.cnblogs.com/aquar/p/3263761.html
当JTable的单元格处于编辑状态时,如果用户触发以下事件,表格就会退出编辑状态,进而调用TableModel的
public void setValueAt(Object aValue, int row, int column)
1. 回车确认
2. 使用方向键或tab移动到别的单元格
3. 鼠标点击别的单元格
但是,如果用户点击了表格之外的控件,表格中单元格还是处于编辑状态,此时如果点击的是“保存”按钮,由于单元格并没有接受用户的输入,导致当前编辑的单元格的值为null,用户输入的数据没有保存。
同时,由于表格中的所有单元格是共用一个CellEditor,当用户新建一行时,通常会让光标移动到新建的行的某一个单元格,此时原来正在编辑的单元格就会替换到新增加的行中,而之前单元格的输入的内容没有保存。
因此,在触发其他操作之前,最好能够取消表格正在编辑的状态。
方法1.
JTable table = new JTable(...);
table.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);
当其他控件获取焦点后,表格会停止编辑,但是点击最小化时没有效果。
方法2.
if (table.isEditing())
table.getCellEditor().stopCellEditing();
在需要取消表格编辑状态的按钮等控件的事件响应中根据具体情况来取消表格的编辑状态。
原文说点击表格的表头,使用第一种方法,表格不会退出编辑状态,但是经测试也是会退出编辑状态的。
表格Model简单继承DefaultTableModel
package
com.aquar.table;
import
com.aquar.data.Movie;
import
javax.swing.table.DefaultTableModel;
import
java.util.ArrayList;
import
java.util.Date;
import
java.util.List;
import
java.util.Vector;
/**
* Created with IntelliJ IDEA.
* User: Edison
* Date: 13-8-16
* Time: 下午10:46
* A table model for movies.
*/
public
class
TableModelMovie
extends
DefaultTableModel {
private
static
final
int
COL_NAME =
0
;
private
static
final
int
COL_PREMIERE = COL_NAME +
1
;
private
static
final
int
COL_DIRCTOR = COL_PREMIERE +
1
;
public
TableModelMovie() {
init();
mockData();
}
private
void
init() {
columnIdentifiers.add(
"Name"
);
columnIdentifiers.add(
"Premiere"
);
columnIdentifiers.add(
"Director"
);
}
/**
* make some movies.
*/
private
void
mockData() {
List<Movie> list =
new
ArrayList<>();
list.add(
new
Movie(
"The Shawshank Redemption"
,
new
Date(),
"Frank Darabont"
));
list.add(
new
Movie(
"The Godfather"
,
new
Date(),
" Francis Ford Coppola"
));
list.add(
new
Movie(
"Pulp Fiction"
,
new
Date(),
"Quentin Tarantino"
));
list.add(
new
Movie(
"The Dark Knight"
,
new
Date(),
"Frank Darabont"
));
fillTableData(list);
}
private
void
fillTableData(List<Movie> movies) {
dataVector.clear();
for
(Movie movie : movies) {
Vector rowVector =
new
Vector();
rowVector.add(movie);
dataVector.add(rowVector);
}
fireTableDataChanged();
}
@Override
public
Object getValueAt(
int
row,
int
column) {
Object ret =
""
;
if
(row > dataVector.size()) {
return
ret;
}
// Get one row data.
Vector rowData = (Vector) dataVector.elementAt(row);
Movie movie = (Movie) rowData.elementAt(
0
);
switch
(column) {
case
COL_NAME:
ret = movie.getName();
break
;
case
COL_PREMIERE:
ret = movie.getPremiere().toString();
break
;
case
COL_DIRCTOR:
ret = movie.getDirector();
break
;
default
:
break
;
}
return
ret;
}
@Override
public
void
setValueAt(Object aValue,
int
row,
int
column) {
if
(row > dataVector.size()) {
return
;
}
// Get one row data.
Vector rowData = (Vector) dataVector.elementAt(row);
Movie movie = (Movie) rowData.elementAt(
0
);
switch
(column) {
case
COL_NAME:
movie.setName(aValue.toString());
break
;
case
COL_DIRCTOR:
movie.setDirector(aValue.toString());
break
;
default
:
break
;
}
}
@Override
public
boolean
isCellEditable(
int
row,
int
column) {
return
column == COL_NAME || column == COL_DIRCTOR;
}
}
|
数据对象
package
com.aquar.data;
import
java.util.Date;
import
java.util.List;
/**
* Created with IntelliJ IDEA.
* User: Edison
* Date: 13-8-16
* Time: 下午10:30
* To change this template use File | Settings | File Templates.
*/
public
class
Movie {
private
String name;
private
Date premiere;
private
String publisher;
private
String director;
private
List<String> starrings;
public
Movie(String movName, Date movPremiere, String movDirector) {
this
.name = movName;
this
.premiere = movPremiere;
this
.director = movDirector;
}
public
String getName() {
return
name;
}
public
Date getPremiere() {
return
premiere;
}
public
String getPublisher() {
return
publisher;
}
public
String getDirector() {
return
director;
}
public
List<String> getStarrings() {
return
starrings;
}
public
void
setName(String name) {
this
.name = name;
}
public
void
setPremiere(Date premiere) {
this
.premiere = premiere;
}
public
void
setPublisher(String publisher) {
this
.publisher = publisher;
}
public
void
setDirector(String director) {
this
.director = director;
}
public
void
setStarrings(List<String> starrings) {
this
.starrings = starrings;
}
}
|
程序入口和UI
package
com.aquar.main;
import
com.aquar.table.TableModelMovie;
import
javax.swing.*;
import
java.awt.*;
import
java.awt.event.ActionEvent;
import
java.awt.event.ActionListener;
/**
* Created with IntelliJ IDEA.
* User: Edison
* Date: 13-7-14
* Time: 下午11:55
* To change this template use File | Settings | File Templates.
*/
public
class
MainFrame {
private
final
int
width =
800
;
private
final
int
height =
600
;
private
JFrame mFrame;
private
JTable movTable;
public
MainFrame() {
mFrame =
new
JFrame();
mFrame.setLayout(
new
BorderLayout(
0
,
0
));
mFrame.setSize(
new
Dimension(width, height));
mFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
initUI();
mFrame.setVisible(
true
);
}
private
void
initUI() {
TableModelMovie modelMovie =
new
TableModelMovie();
movTable =
new
JTable(modelMovie);
movTable.setRowHeight(
20
);
movTable.putClientProperty(
"terminateEditOnFocusLost"
, Boolean.TRUE);
JScrollPane scrollPane =
new
JScrollPane(movTable);
mFrame.add(scrollPane, BorderLayout.CENTER);
JPanel footPanel =
new
JPanel();
JButton newBtn =
new
JButton(
"New"
);
newBtn.addActionListener(
new
ActionListener() {
@Override
public
void
actionPerformed(ActionEvent e) {
// if (movTable.isEditing()) {
// movTable.getCellEditor().stopCellEditing();
// }
}
});
footPanel.add(newBtn);
mFrame.add(footPanel, BorderLayout.SOUTH);
}
public
void
show() {
}
public
static
void
main(String[] args) {
new
MainFrame();
}
}
|
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