[英]Making Table Column editable for float data types
I am sucessfull in making table column editable for those which refers to a string
data type column of database table. 我很成功地使表列可以编辑为那些引用数据库表的string
数据类型列的列。 But I am unsucessfull in doing the same with a float
data type column of database table. 但是我对使用数据库表的float
数据类型列做同样的事情是不成功的。
tblColProductID.setCellValueFactory(new PropertyValueFactory<ProductHeader, String>("Product_ID"));
tblColProductName.setCellFactory(TextFieldTableCell.forTableColumn());
tblColProductName.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<ProductHeader,String>>() {
@Override
public void handle(CellEditEvent<ProductHeader, String> t) {
// TODO Auto-generated method stub
((ProductHeader) t.getTableView().getItems()
.get(t.getTablePosition().getRow())).setProduct_ID((String) t.getNewValue());
}
The above tblColProductID
refers to ProductID
column which is has string datatype. 上面的tblColProductID
指的是具有字符串数据类型的ProductID
列。 But the code below gives me error in setCellFactory
但是下面的代码在setCellFactory
中给出了错误
tblColQuantity.setCellValueFactory(new PropertyValueFactory<PurchaseDetail, Float>("Quantity"));
tblColQuantity.setCellFactory(TextFieldTableCell.forTableColumn());
tblColQuantity.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<PurchaseDetail,Float>>() {
@Override
public void handle(CellEditEvent<PurchaseDetail, Float> t) {
((PurchaseDetail) t.getTableView().getItems().get(t.getTablePosition().getRow())).setQuantity((t.getNewValue()));
}
});
How do I make this second code work? 如何使第二个代码工作? Thank you 谢谢
Okay I have solved the problem and this is how I did it. 好的,我已经解决了问题,这就是我做到的。
I refered to https://stackoverflow.com/a/27915420/5675550 which showed how to edit a table column with int
datatype. 我参考https://stackoverflow.com/a/27915420/5675550 ,其中展示了如何使用int
数据类型编辑表列。 I modified the code and made it work for float
datatypes. 我修改了代码并使其适用于float
数据类型。
Here is the code :- 这是代码: -
tblColQuantity.setCellFactory(col -> new IntegerEditingCell());
public class IntegerEditingCell extends TableCell<ProductHeader, Number> {
private final TextField textField = new TextField();
private final Pattern intPattern = Pattern.compile("\\d*\\.\\d+");
public IntegerEditingCell(){
textField.focusedProperty().addListener((obs, wasFocused, isNowFocused) -> {
if (! isNowFocused) {
processEdit();
}
});
textField.setOnAction(event -> processEdit());
}
private void processEdit() {
String text = textField.getText();
if (intPattern.matcher(text).matches()) {
commitEdit(Float.parseFloat(text));
} else {
cancelEdit();
}
}
@Override
public void updateItem(Number value, boolean empty) {
super.updateItem(value, empty);
if (empty) {
setText(null);
setGraphic(null);
}else if (isEditing()) {
setText(null);
textField.setText(value.toString());
setGraphic(textField);
} else {
setText(value.toString());
setGraphic(null);
}
}
@Override
public void startEdit() {
super.startEdit();
Number value = getItem();
if (value != null) {
textField.setText(value.toString());
setGraphic(textField);
setText(null);
}
}
@Override
public void cancelEdit() {
super.cancelEdit();
setText(getItem().toString());
setGraphic(null);
}
// This seems necessary to persist the edit on loss of focus; not sure why:
@Override
public void commitEdit(Number value) {
super.commitEdit(value);
((Item)this.getTableRow().getItem()).setValue(value.floatValue());
}
}
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