有没有办法让javafx中的TableView在摆动时像JTable一样动作？
TableView编辑单元格内容的当前过程是：
而在jtable中则更容易;你不必按Enter进行编辑;你可以直接编辑。
在这一点上让javafx表视图像jtable一样的任何想法？
答案 0 :(得分：0)
我是用一堆听众做的。我会添加我的代码片段，因为列不会真正适用于您。
public class DataTable extends TableView<LineItem> {
private final Data data;
//used for keyreleased in table to put table in editing state and remember which key was pressed
private String lastKey = null;
/** makes a table
* @param data The Data structure
*/
public DataTable(Data data){
super(data.lines);
this.data = data;
setEditable(true);
//cut out my deleted lines stack but left some code because has to handle del in textfield
Callback<TableColumn<LineItem,String>, TableCell<LineItem,String>> txtCellFactory =
(TableColumn<LineItem,String> p) -> {return new EditingCell();};
TableColumn<LineItem,String> lineNoCol = new TableColumn<>("Line");
lineNoCol.setCellValueFactory(new PropertyValueFactory<>("LineNo"));
lineNoCol.setCellFactory(txtCellFactory);
lineNoCol.setOnEditCommit((TableColumn.CellEditEvent<LineItem, String> evt) -> {
evt.getTableView().getItems().get(evt.getTablePosition().getRow())
.setLineNo(evt.getNewValue());
});
//more columns
///// This puts it in editing state and remebers the key pressed for the textfield
setOnKeyPressed((KeyEvent t) -> {
TablePosition tp;
if (!t.isControlDown() &&
(t.getCode().isLetterKey() || t.getCode().isDigitKey())) {
lastKey = t.getText();
tp = getFocusModel().getFocusedCell();
edit(tp.getRow(),tp.getTableColumn());
lastKey = null;
}
});
addEventFilter(KeyEvent.KEY_PRESSED, (KeyEvent t) -> {
if (getEditingCell() == null && t.getCode() == KeyCode.ENTER) {
if (t.isShiftDown()) {
getSelectionModel().selectAboveCell();
} else {
getSelectionModel().selectBelowCell();
}
t.consume();
}
if (t.isControlDown() && t.getCode() == KeyCode.TAB) {
if (t.isShiftDown()) {
getSelectionModel().selectLeftCell();
} else {
getSelectionModel().selectRightCell();
}
t.consume();
}
});
setOnKeyReleased((KeyEvent t) -> {
TablePosition tp;
switch (t.getCode()) {
case INSERT:
data.lines.add(new LineItem());//maybe try adding at position
getSelectionModel().selectLast();
break;
case DELETE:
//textfield has to consume this so it doesn't reach here.
tp = getSelectionModel().getSelectedCells().get(0);
if (tp.getTableColumn() == lineNoCol) {
deletedLines.push(data.lines.remove(tp.getRow()));
//todo reselect something
} else { //maybe delete cell value
}
break;
case Z:
if (t.isControlDown()) {
if (!deletedLines.isEmpty()) {
data.lines.add(deletedLines.pop());
//todo re-sort etc
}
}
}
});
}
private class EditingCell extends TableCell {//no type for now
private TextField textField;
@Override
public void startEdit() {
if (!isEmpty()) {
super.startEdit();
createTextField();
setText(null);
setGraphic(textField);
Platform.runLater(() -> {//without this space erases text, f2 doesn't
textField.requestFocus();//also selects
});
if (lastKey != null) {
textField.setText(lastKey);
Platform.runLater(() -> {
textField.deselect();
textField.end();
});
}
}
}
@Override
public void cancelEdit() {
super.cancelEdit();
try {
setText(getItem().toString());
} catch (Exception e) {}
setGraphic(null);
}
@Override
public void updateItem(Object 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);
//not applicable but shows how to align columns
if (getTableColumn().getText().equals("Amount"))
setAlignment(Pos.CENTER_RIGHT);
}
}
private void createTextField() {
textField = new TextField(getString());
//setPadding(Insets.EMPTY);//screws up table cell for after
textField.setPadding(new Insets(0,0,0,5));
textField.setPrefHeight(this.getHeight()-2);//border hgt??
textField.focusedProperty().addListener(
(ObservableValue<? extends Boolean> arg0, Boolean arg1, Boolean arg2) -> {
if (!arg2) commitEdit(textField.getText());
});
textField.setOnKeyReleased((KeyEvent t) -> {
if (t.getCode() == KeyCode.ENTER) {
commitEdit(textField.getText());
EditingCell.this.getTableView().requestFocus();//why does it lose focus??
EditingCell.this.getTableView().getSelectionModel().selectBelowCell();
}
else if (t.getCode() == KeyCode.RIGHT) {//dont really like this
if (textField.getCaretPosition() >= textField.getLength()){
commitEdit(textField.getText());
EditingCell.this.getTableView().requestFocus();//why does it lose focus??
EditingCell.this.getTableView().getSelectionModel().selectRightCell();
}
}
else if (t.getCode() == KeyCode.UP) {//moves caret to 0
if (textField.getCaretPosition() == 0){
commitEdit(textField.getText());
EditingCell.this.getTableView().requestFocus();//why does it lose focus??
EditingCell.this.getTableView().getSelectionModel().selectAboveCell();
}
}
else if (t.getCode() == KeyCode.DOWN) {
if (textField.getCaretPosition() >= textField.getLength()){
commitEdit(textField.getText());
EditingCell.this.getTableView().requestFocus();//why does it lose focus??
EditingCell.this.getTableView().getSelectionModel().selectBelowCell();
}
}
else if (t.getCode() == KeyCode.ESCAPE) {
cancelEdit();
}
});
textField.addEventFilter(KeyEvent.KEY_RELEASED, (KeyEvent t) -> {
if (t.getCode() == KeyCode.DELETE) {
t.consume();//stop from deleting line in table keyevent
}
});
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
}
}