JTable中的JSpinner（Time） [英] JSpinner (Time) in JTable
本文介绍了JTable中的JSpinner（Time）的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
这里是我的SpinnerEditor.class洞，添加了一些评论。
代码：
public SpinnerEditor（String timeFormat）{
super（new JTextField（））;
//要显示的默认时间（1小时）
时间日期=新时间（3600000）;
SpinnerDateModel timeModel = new SpinnerDateModel（date，null，null，Calendar.MINUTE）;
spinner = new JSpinner（timeModel）;
editorDate = new JSpinner.DateEditor（spinner，timeFormat）;
spinner.setEditor（editorDate）;
editorDate =（（JSpinner.DateEditor）spinner.getEditor（））;
// println result：Thu Jan 01 01:00:00 UTC 1970
System.out.println（editorDate.getTextField（）。getValue（））;
textField = editorDate.getTextField（）;
textField.addFocusListener（new FocusListener（）{
public void focusGained（FocusEvent fe）{
System.err.println（Got focus）;
//textField.setSelectionStart （0）;
//textField.setSelectionEnd(1）;
SwingUtilities.invokeLater（new Runnable（）{
public void run（）{
if（valueSet）{
textField.setCaretPosition（1）;
}
}
}）;
}
public void focusLost（FocusEvent fe）{
}
}）;
textField.addActionListener（new ActionListener（）{
public void actionPerformed（ActionEvent ae）{
stopCellEditing（）;
}
}）;
}
//准备微调器组件并返回它。
public Component getTableCellEditorComponent（
JTable table，Object value，boolean isSelected，int row，int column
）{
if（！valueSet）{
spinner.setValue值）;
}
SwingUtilities.invokeLater（new Runnable（）{
public void run（）{
textField.requestFocus（）;
}
}）;
返回旋转;
}
public boolean isCellEditable（EventObject eo）{
System.err.println（isCellEditable）;
if（eo instanceof KeyEvent）{
KeyEvent ke =（KeyEvent）eo;
System.err.println（key event：+ ke.getKeyChar（））;
textField.setText（String.valueOf（ke.getKeyChar（）））;
valueSet = true;
} else {
valueSet = false;
}
返回true;
}
//返回旋转器当前值。
public Object getCellEditorValue（）{
return spinner.getValue（）;
}
public boolean stopCellEditing（）{
System.err.println（Stopping edit）;
//在stopcellEditing被称为TextField被设置为错误的值（Thu Jan 01 01:00:00 UTC 1970）
super.stopCellEditing（）;
try {
if（editorNumeric！= null）
{
editorNumeric.commitEdit（）;
spinner.commitEdit（）;
}
if（editorDate！= null）
{
SimpleDateFormat lFormat = new SimpleDateFormat（HH：mm）;
textField.setText（（spinner.getValue（）！= null）？lFormat.format（spinner.getValue（））：）;
}
} catch（java.text.ParseException e）{
JOptionPane.showMessageDialog（null，
无效的值，丢弃）;
}
返回true;
}
解决方案
你很混乱的编辑器和渲染器。编辑器是在编辑单元格时显示的小部件。当单元格不再编辑时，单元格渲染器用于绘制单元格。这一切都在本段落中解释。我真的建议你阅读它，因为它清楚地说明了如何执行表格渲染。
您应该做的是使用自定义CellRenderer作为相关列，以便它使用您的日期格式化程序。
查看本教程了解更多信息在细胞编辑器和细胞渲染器上。
I am trying to implement an JSpinner for time in to a JTable , it worked preaty goot at the first look but after losing the focus of the cell the edited cell is being set to "Thu Jan 01 +time+ UTC 1970" the time is being set correctly. How can I remove the Date from the Time ?
here is my hole SpinnerEditor.class , have added some comments.
Code :
public SpinnerEditor(String timeFormat) {
super(new JTextField());
// Default Time I want to Display (1 Hour)
Time date = new Time(3600000);
SpinnerDateModel timeModel = new SpinnerDateModel(date, null, null,Calendar.MINUTE);
spinner = new JSpinner(timeModel);
editorDate = new JSpinner.DateEditor(spinner, timeFormat);
spinner.setEditor(editorDate);
editorDate = ((JSpinner.DateEditor)spinner.getEditor());
// println result : "Thu Jan 01 01:00:00 UTC 1970"
System.out.println(editorDate.getTextField().getValue());
textField = editorDate.getTextField();
textField.addFocusListener( new FocusListener() {
public void focusGained( FocusEvent fe ) {
System.err.println("Got focus");
//textField.setSelectionStart(0);
//textField.setSelectionEnd(1);
SwingUtilities.invokeLater( new Runnable() {
public void run() {
if ( valueSet ) {
textField.setCaretPosition(1);
}
}
});
}
public void focusLost( FocusEvent fe ) {
}
});
textField.addActionListener( new ActionListener() {
public void actionPerformed( ActionEvent ae ) {
stopCellEditing();
}
});
}
// Prepares the spinner component and returns it.
public Component getTableCellEditorComponent(
JTable table, Object value, boolean isSelected, int row, int column
) {
if ( !valueSet ) {
spinner.setValue(value);
}
SwingUtilities.invokeLater( new Runnable() {
public void run() {
textField.requestFocus();
}
});
return spinner;
}
public boolean isCellEditable( EventObject eo ) {
System.err.println("isCellEditable");
if ( eo instanceof KeyEvent ) {
KeyEvent ke = (KeyEvent)eo;
System.err.println("key event: "+ke.getKeyChar());
textField.setText(String.valueOf(ke.getKeyChar()));
valueSet = true;
} else {
valueSet = false;
}
return true;
}
// Returns the spinners current value.
public Object getCellEditorValue() {
return spinner.getValue();
}
public boolean stopCellEditing() {
System.err.println("Stopping edit");
// after stopcellEditing is called the TextField is being set with the wrong values (Thu Jan 01 01:00:00 UTC 1970)
super.stopCellEditing();
try {
if( editorNumeric!=null)
{
editorNumeric.commitEdit();
spinner.commitEdit();
}
if( editorDate!=null)
{
SimpleDateFormat lFormat = new SimpleDateFormat("HH:mm");
textField.setText((spinner.getValue() != null) ? lFormat.format(spinner.getValue()) : "");
}
} catch ( java.text.ParseException e ) {
JOptionPane.showMessageDialog(null,
"Invalid value, discarding.");
}
return true;
}
解决方案
You are confusing Editors and Renderers. Editor is a widget displayed when a cell is being edited. When the cell is no longer edited, the cell renderer is used to "paint" the cell. This is all explained in this paragraph. I would really recommend you to read it, as it explains clearly how table rendering is performed.
What you should do, is use a Custom CellRenderer for the involved column so that it uses your date formatter.
Take a look at this tutorial for more information on cell editors and cell renderers.
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