TableView，设置可编辑单元格
TableView, setting editable cells
我尝试使 Table 个单元格可编辑。我设法用两个包含字符串值的列来做到这一点，但我不能用代表整数值的列来做到这一点。
带有 X 的地方是编译器出错的地方：
The method setCellFactory(Callback<TableColumn<DataModel,Integer>,TableCell<DataModel,Integer>>) in the type TableColumn<DataModel,Integer> is not applicable for the arguments (Callback<TableColumn<DataModel,String>,TableCell<DataModel,String>>)
带有 XX 的地方是编译器得到错误的地方：
The method setOnEditCommit(EventHandler<TableColumn.CellEditEvent<DataModel,Integer>>) in the type TableColumn<DataModel,Integer> is not applicable for the arguments ((CellEditEvent<DataModel, Integer> event) -> {})
代码如下：
public void initialize(URL location, ResourceBundle resources) {
//Tworzymy sobie kolumny, które będą odpowiadać oraz przyjmować konretne dane
TableColumn<DataModel, String> nameColumn = new TableColumn<DataModel, String>("Name");
nameColumn.setMinWidth(100);
TableColumn<DataModel, String> surnameColumn = new TableColumn<DataModel, String>("Surname");
surnameColumn.setMinWidth(100);
TableColumn<DataModel, Integer> ageColumn = new TableColumn<DataModel, Integer>("Age");
ageColumn.setMinWidth(100);
TableColumn<DataModel, Integer> telNumberColumn = new TableColumn<DataModel, Integer>("Tel. Number");
telNumberColumn.setMinWidth(100);
//dodajemy kolumny do okna
tableView.getColumns().addAll(nameColumn,surnameColumn,ageColumn,telNumberColumn);
//podajemy nazwy zmiennych, których wartości mają się wyświetlać w poszczególnych kolumnach
nameColumn.setCellValueFactory(new PropertyValueFactory<>("sName"));
surnameColumn.setCellValueFactory(new PropertyValueFactory<>("sSurname"));
ageColumn.setCellValueFactory(new PropertyValueFactory<>("iAge"));
telNumberColumn.setCellValueFactory(new PropertyValueFactory<>("iPhoneNumber"));
//Sprawiamy że poszczególne kolumny stają się edytowalne
nameColumn.setCellFactory(TextFieldTableCell.<DataModel>forTableColumn());
nameColumn.setOnEditCommit((CellEditEvent<DataModel, String> event) -> {
((DataModel) event.getTableView().getItems(). get(event.getTablePosition().getRow())). setsName(event.getNewValue());
});
surnameColumn.setCellFactory(TextFieldTableCell.<DataModel>forTableColumn());
surnameColumn.setOnEditCommit((CellEditEvent<DataModel, String> event) -> {
((DataModel) event.getTableView().getItems(). get(event.getTablePosition().getRow())). setsSurname(event.getNewValue());
});
X ageColumn.setCellFactory(TextFieldTableCell.<DataModel>forTableColumn());
XX ageColumn.setOnEditCommit((CellEditEvent<DataModel, Integer> event) -> {
// ((DataModel) event.getTableView().getItems(). get(event.getTablePosition().getRow())). setiAge(Integer.valueOf(event.getNewValue()));
});
X telNumberColumn.setCellFactory(TextFieldTableCell.<DataModel>forTableColumn());
XX telNumberColumn.setOnEditCommit((CellEditEvent<DataModel, Integer> event) -> {
// ((DataModel) event.getTableView().getItems(). get(event.getTablePosition().getRow())). setiPhoneNumber(Integer.valueOf(event.getNewValue()));
});
tableView.setPlaceholder(new Label("Pust tabelka!"));//jaki element dodać jeśli tabelka nie jest wyświetlona
tableView.setEditable(true);
tableView.setItems(dataList); //wczytujemy dane do przygotowanej tabelki
buttAdd.setOnAction((ActionEvent e) -> {
buttAddAction(e);
});
}
我正在学oracle Table查看教程，难度比较大。帮助。
问题是 TextFieldTableCell.forTableColumn() 被键入了一个字符串值。查看默认实现：
public static <S> Callback<TableColumn<S,String>, TableCell<S,String>> forTableColumn() {
return forTableColumn(new DefaultStringConverter());
}
你需要的是 TextFieldTableCell 加上 IntegerStringConverter，例如：
ageColumn.setCellFactory(TextFieldTableCell.<DataModel, Integer>forTableColumn(new IntegerStringConverter()));
我搜索了很多答案，并且 borrowed/extended/merged 找到了这个解决方案。当焦点从已编辑的单元格移开时，将提交编辑。对于可以在 table 中表示的每种数据类型，我都有一个 public class：EditingTextCell、EditingIntegerCell 等。这些 public classes 可以应用于任何table 前提是数据表示为 class 的可观察列表，该列表访问要显示为属性的数据。我发布此解决方案是因为我面临着为我的应用程序中每个 table 的每一列创建一个 class。目前，双精度值和组合框单元格版本绑定到特定 table 的特定列。如果时间允许，我会做这些的通用版本。请原谅我没有提供源链接——我在仔细阅读它们时忘记将它们添加为书签。
Java 文档表明即将推出更简单的方法。
整数字段的用法示例：
TableColumn<Factor, Number> noLevelsCol =
new TableColumn<>("No. Levels");
noLevelsCol.setCellValueFactory(
new PropertyValueFactory("numberLevels"));
noLevelsCol.setMinWidth(40);
noLevelsCol.setCellFactory(col -> new EditingIntegerCell<>());
noLevelsCol.setOnEditCommit((CellEditEvent<Factor, Number> t) -> {
((Factor) t.getTableView().getItems().get(
t.getTablePosition().getRow())
).setNumberLevels(t.getNewValue().intValue());
});
字符串字段的用法示例：
TableColumn<Factor, String> nameCol = new TableColumn<>("Name");
nameCol.setMinWidth(60);
nameCol.setCellValueFactory(
new PropertyValueFactory("factorName"));
nameCol.setCellFactory(cellFactory);
nameCol.setOnEditCommit((CellEditEvent<Factor, String> t) -> {
((Factor) t.getTableView().getItems().get(
t.getTablePosition().getRow())
).setFactorName(t.getNewValue());
});
因子定义class:
public class 因子 {
private final IntegerProperty factorID = new SimpleIntegerProperty();
public IntegerProperty getFactorID() { return factorID; }
private StringProperty factorName = new SimpleStringProperty();
public void setFactorName(String value) {
factorNameProperty().set(value); }
public String getFactorName() { return factorNameProperty().get(); }
public StringProperty factorNameProperty() {
if (factorName == null) factorName =
new SimpleStringProperty(this, "factorName");
return factorName;
}
private IntegerProperty numberLevels = new SimpleIntegerProperty();
public void setNumberLevels(int value) {
numberLevelsProperty().set(value); }
public IntegerProperty getNumberLevels() { return numberLevels; }
public IntegerProperty numberLevelsProperty() {
if (numberLevels == null) numberLevels =
new SimpleIntegerProperty(this, "numberLevels");
return numberLevels;
}
private StringProperty listOfLevels = new SimpleStringProperty();
public void setListOfLevels(String value) {
listOfLevelsProperty().set(value); }
public String getListOfLevels() { return listOfLevelsProperty().get(); }
public StringProperty listOfLevelsProperty() {
if (listOfLevels == null) listOfLevels =
new SimpleStringProperty(this, "listOfLevels");
return listOfLevels;
}
// Constructors
public Factor(int factorID, String factorName) {
this.factorID.set(factorID);
this.factorName.set(factorName);
this.numberLevels.set(1);
this.listOfLevels.set("-1, 1");
}
public Factor(int factorID, String factorName, int numberLevels,
String listOfLevels) {
this.factorID.set(factorID);
this.factorName.set(factorName);
this.numberLevels.set(numberLevels);
this.listOfLevels.set(listOfLevels);
}
@Override
public String toString() {
return "Factor{" + "factorName=" + factorName + '}';
}
public String[] getLevels() {
return listOfLevels.getValue().split(",");
}
}
正在将数据加载到 table
最终 ObservableList factorList =
FXCollections.observableArrayList(
新因素（1，"Factor1"，2，“-1，1”）
);
factorTableView.setEditable(true);
factorTableView.getColumns().clear();
factorTableView.setItems(factorList);
boolean addAll;
addAll = factorTableView.getColumns().addAll(idCol,
nameCol, noLevelsCol, levelsCol);
EditingIntegerCell class
public class EditingIntegerCell 扩展了 TableCell {
private TextField textField;
private final Pattern intPattern = Pattern.compile("-?\d+");
public EditingIntegerCell() {
}
@Override
public void startEdit() {
if (!isEmpty()) {
super.startEdit();
createTextField();
setText(null);
setGraphic(textField);
textField.selectAll();
}
}
@Override
public void cancelEdit() {
super.cancelEdit();
setText((String) getItem().toString());
setGraphic(null);
}
@Override
public void updateItem(Number item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(null);
} else {
if (isEditing()) {
if (textField != null) {
textField.setText(getString());
}
setText(null);
setGraphic(textField);
} else {
setText(getString());
setGraphic(null);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap()* 2);
textField.focusedProperty().addListener(
(ObservableValue<? extends Boolean> arg0, Boolean arg1, Boolean arg2)
-> {
if (!arg2) {
processEdit();
}
});
}
private void processEdit() {
String text = textField.getText();
if (intPattern.matcher(text).matches()) {
commitEdit(Integer.parseInt(text));
} else {
cancelEdit();
}
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
}
** EditingTextCell class **
public class EditingTextCell 扩展了 TableCell {
private TextField textField;
public EditingTextCell() {
}
@Override
public void startEdit() {
if (!isEmpty()) {
super.startEdit();
createTextField();
setText(null);
setGraphic(textField);
textField.selectAll();
}
}
@Override
public void cancelEdit() {
super.cancelEdit();
setText((String) getItem());
setGraphic(null);
}
@Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(null);
} else {
if (isEditing()) {
if (textField != null) {
textField.setText(getString());
}
setText(null);
setGraphic(textField);
} else {
setText(getString());
setGraphic(null);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap()* 2);
textField.focusedProperty().addListener(
(ObservableValue<? extends Boolean> arg0, Boolean arg1, Boolean arg2)
-> {
if (!arg2) {
commitEdit(textField.getText());
}
});
}
private String getString() {
return getItem() == null ? "" : getItem();
}
}
我尝试使 Table 个单元格可编辑。我设法用两个包含字符串值的列来做到这一点，但我不能用代表整数值的列来做到这一点。
带有 X 的地方是编译器出错的地方：
The method setCellFactory(Callback<TableColumn<DataModel,Integer>,TableCell<DataModel,Integer>>) in the type TableColumn<DataModel,Integer> is not applicable for the arguments (Callback<TableColumn<DataModel,String>,TableCell<DataModel,String>>)
带有 XX 的地方是编译器得到错误的地方：
The method setOnEditCommit(EventHandler<TableColumn.CellEditEvent<DataModel,Integer>>) in the type TableColumn<DataModel,Integer> is not applicable for the arguments ((CellEditEvent<DataModel, Integer> event) -> {})
代码如下：
public void initialize(URL location, ResourceBundle resources) {
//Tworzymy sobie kolumny, które będą odpowiadać oraz przyjmować konretne dane
TableColumn<DataModel, String> nameColumn = new TableColumn<DataModel, String>("Name");
nameColumn.setMinWidth(100);
TableColumn<DataModel, String> surnameColumn = new TableColumn<DataModel, String>("Surname");
surnameColumn.setMinWidth(100);
TableColumn<DataModel, Integer> ageColumn = new TableColumn<DataModel, Integer>("Age");
ageColumn.setMinWidth(100);
TableColumn<DataModel, Integer> telNumberColumn = new TableColumn<DataModel, Integer>("Tel. Number");
telNumberColumn.setMinWidth(100);
//dodajemy kolumny do okna
tableView.getColumns().addAll(nameColumn,surnameColumn,ageColumn,telNumberColumn);
//podajemy nazwy zmiennych, których wartości mają się wyświetlać w poszczególnych kolumnach
nameColumn.setCellValueFactory(new PropertyValueFactory<>("sName"));
surnameColumn.setCellValueFactory(new PropertyValueFactory<>("sSurname"));
ageColumn.setCellValueFactory(new PropertyValueFactory<>("iAge"));
telNumberColumn.setCellValueFactory(new PropertyValueFactory<>("iPhoneNumber"));
//Sprawiamy że poszczególne kolumny stają się edytowalne
nameColumn.setCellFactory(TextFieldTableCell.<DataModel>forTableColumn());
nameColumn.setOnEditCommit((CellEditEvent<DataModel, String> event) -> {
((DataModel) event.getTableView().getItems(). get(event.getTablePosition().getRow())). setsName(event.getNewValue());
});
surnameColumn.setCellFactory(TextFieldTableCell.<DataModel>forTableColumn());
surnameColumn.setOnEditCommit((CellEditEvent<DataModel, String> event) -> {
((DataModel) event.getTableView().getItems(). get(event.getTablePosition().getRow())). setsSurname(event.getNewValue());
});
X ageColumn.setCellFactory(TextFieldTableCell.<DataModel>forTableColumn());
XX ageColumn.setOnEditCommit((CellEditEvent<DataModel, Integer> event) -> {
// ((DataModel) event.getTableView().getItems(). get(event.getTablePosition().getRow())). setiAge(Integer.valueOf(event.getNewValue()));
});
X telNumberColumn.setCellFactory(TextFieldTableCell.<DataModel>forTableColumn());
XX telNumberColumn.setOnEditCommit((CellEditEvent<DataModel, Integer> event) -> {
// ((DataModel) event.getTableView().getItems(). get(event.getTablePosition().getRow())). setiPhoneNumber(Integer.valueOf(event.getNewValue()));
});
tableView.setPlaceholder(new Label("Pust tabelka!"));//jaki element dodać jeśli tabelka nie jest wyświetlona
tableView.setEditable(true);
tableView.setItems(dataList); //wczytujemy dane do przygotowanej tabelki
buttAdd.setOnAction((ActionEvent e) -> {
buttAddAction(e);
});
}
我正在学oracle Table查看教程，难度比较大。帮助。
问题是 TextFieldTableCell.forTableColumn() 被键入了一个字符串值。查看默认实现：
public static <S> Callback<TableColumn<S,String>, TableCell<S,String>> forTableColumn() {
return forTableColumn(new DefaultStringConverter());
}
你需要的是 TextFieldTableCell 加上 IntegerStringConverter，例如：
ageColumn.setCellFactory(TextFieldTableCell.<DataModel, Integer>forTableColumn(new IntegerStringConverter()));
我搜索了很多答案，并且 borrowed/extended/merged 找到了这个解决方案。当焦点从已编辑的单元格移开时，将提交编辑。对于可以在 table 中表示的每种数据类型，我都有一个 public class：EditingTextCell、EditingIntegerCell 等。这些 public classes 可以应用于任何table 前提是数据表示为 class 的可观察列表，该列表访问要显示为属性的数据。我发布此解决方案是因为我面临着为我的应用程序中每个 table 的每一列创建一个 class。目前，双精度值和组合框单元格版本绑定到特定 table 的特定列。如果时间允许，我会做这些的通用版本。请原谅我没有提供源链接——我在仔细阅读它们时忘记将它们添加为书签。
Java 文档表明即将推出更简单的方法。
整数字段的用法示例：
TableColumn<Factor, Number> noLevelsCol =
new TableColumn<>("No. Levels");
noLevelsCol.setCellValueFactory(
new PropertyValueFactory("numberLevels"));
noLevelsCol.setMinWidth(40);
noLevelsCol.setCellFactory(col -> new EditingIntegerCell<>());
noLevelsCol.setOnEditCommit((CellEditEvent<Factor, Number> t) -> {
((Factor) t.getTableView().getItems().get(
t.getTablePosition().getRow())
).setNumberLevels(t.getNewValue().intValue());
});
字符串字段的用法示例：
TableColumn<Factor, String> nameCol = new TableColumn<>("Name");
nameCol.setMinWidth(60);
nameCol.setCellValueFactory(
new PropertyValueFactory("factorName"));
nameCol.setCellFactory(cellFactory);
nameCol.setOnEditCommit((CellEditEvent<Factor, String> t) -> {
((Factor) t.getTableView().getItems().get(
t.getTablePosition().getRow())
).setFactorName(t.getNewValue());
});
因子定义class: public class 因子 {
private final IntegerProperty factorID = new SimpleIntegerProperty();
public IntegerProperty getFactorID() { return factorID; }
private StringProperty factorName = new SimpleStringProperty();
public void setFactorName(String value) {
factorNameProperty().set(value); }
public String getFactorName() { return factorNameProperty().get(); }
public StringProperty factorNameProperty() {
if (factorName == null) factorName =
new SimpleStringProperty(this, "factorName");
return factorName;
}
private IntegerProperty numberLevels = new SimpleIntegerProperty();
public void setNumberLevels(int value) {
numberLevelsProperty().set(value); }
public IntegerProperty getNumberLevels() { return numberLevels; }
public IntegerProperty numberLevelsProperty() {
if (numberLevels == null) numberLevels =
new SimpleIntegerProperty(this, "numberLevels");
return numberLevels;
}
private StringProperty listOfLevels = new SimpleStringProperty();
public void setListOfLevels(String value) {
listOfLevelsProperty().set(value); }
public String getListOfLevels() { return listOfLevelsProperty().get(); }
public StringProperty listOfLevelsProperty() {
if (listOfLevels == null) listOfLevels =
new SimpleStringProperty(this, "listOfLevels");
return listOfLevels;
}
// Constructors
public Factor(int factorID, String factorName) {
this.factorID.set(factorID);
this.factorName.set(factorName);
this.numberLevels.set(1);
this.listOfLevels.set("-1, 1");
}
public Factor(int factorID, String factorName, int numberLevels,
String listOfLevels) {
this.factorID.set(factorID);
this.factorName.set(factorName);
this.numberLevels.set(numberLevels);
this.listOfLevels.set(listOfLevels);
}
@Override
public String toString() {
return "Factor{" + "factorName=" + factorName + '}';
}
public String[] getLevels() {
return listOfLevels.getValue().split(",");
}
}
正在将数据加载到 table 最终 ObservableList factorList = FXCollections.observableArrayList( 新因素（1，"Factor1"，2，“-1，1”） );
factorTableView.setEditable(true);
factorTableView.getColumns().clear();
factorTableView.setItems(factorList);
boolean addAll;
addAll = factorTableView.getColumns().addAll(idCol,
nameCol, noLevelsCol, levelsCol);
EditingIntegerCell class public class EditingIntegerCell 扩展了 TableCell {
private TextField textField;
private final Pattern intPattern = Pattern.compile("-?\d+");
public EditingIntegerCell() {
}
@Override
public void startEdit() {
if (!isEmpty()) {
super.startEdit();
createTextField();
setText(null);
setGraphic(textField);
textField.selectAll();
}
}
@Override
public void cancelEdit() {
super.cancelEdit();
setText((String) getItem().toString());
setGraphic(null);
}
@Override
public void updateItem(Number item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(null);
} else {
if (isEditing()) {
if (textField != null) {
textField.setText(getString());
}
setText(null);
setGraphic(textField);
} else {
setText(getString());
setGraphic(null);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap()* 2);
textField.focusedProperty().addListener(
(ObservableValue<? extends Boolean> arg0, Boolean arg1, Boolean arg2)
-> {
if (!arg2) {
processEdit();
}
});
}
private void processEdit() {
String text = textField.getText();
if (intPattern.matcher(text).matches()) {
commitEdit(Integer.parseInt(text));
} else {
cancelEdit();
}
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
}
** EditingTextCell class ** public class EditingTextCell 扩展了 TableCell {
private TextField textField;
public EditingTextCell() {
}
@Override
public void startEdit() {
if (!isEmpty()) {
super.startEdit();
createTextField();
setText(null);
setGraphic(textField);
textField.selectAll();
}
}
@Override
public void cancelEdit() {
super.cancelEdit();
setText((String) getItem());
setGraphic(null);
}
@Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(null);
} else {
if (isEditing()) {
if (textField != null) {
textField.setText(getString());
}
setText(null);
setGraphic(textField);
} else {
setText(getString());
setGraphic(null);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap()* 2);
textField.focusedProperty().addListener(
(ObservableValue<? extends Boolean> arg0, Boolean arg1, Boolean arg2)
-> {
if (!arg2) {
commitEdit(textField.getText());
}
});
}
private String getString() {
return getItem() == null ? "" : getItem();
}
}