Javafx Tableview無需輸入鍵即可保存數據

Question

我試圖找到一種解決方案，可以直接為可編輯單元格保存數據，而無需按Enter來保存它。 大多數解決方案是在沒有雙擊的情況下開始編輯（我實現了這一點），我看到沒有輸入鍵就無法保存數據的解決方案。 因此，根據我的知識和研究，我沒有找到任何幫助的方法，這是我要問的問題嗎？如何做？

編輯：

@FXML
private TableView tableVeiwResults;
@FXML
private TableColumn colAnalysis;
@FXML
private TableColumn colResult;
private AnalysisPacientDetailsJpaController apdjpa = new 
AnalysisPacientDetailsJpaController(emf);

 colAnalysis.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<AnalysisPacientDetails, String>, ObservableValue<String>>() {
        @Override
        public ObservableValue<String> call(TableColumn.CellDataFeatures<AnalysisPacientDetails, String> param) {
            return new SimpleStringProperty((param.getValue()).getIdAnalysis().getAnalysisName());

        }
    });


 colResult.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<AnalysisPacientDetails, String>, ObservableValue<String>>() {
        @Override
        public ObservableValue<String> call(TableColumn.CellDataFeatures<AnalysisPacientDetails, String> param) {
            return new SimpleStringProperty((param.getValue()).getAnalysisPacientDetailsResults());
        }
    });

 colResult.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<AnalysisPacientDetails, String>>() {
        @Override
        public void handle(TableColumn.CellEditEvent<AnalysisPacientDetails, String> event) {
            try {

                String newValue = event.getNewValue();
                if (newValue == null || newValue.trim().isEmpty()) {
                    return;
                }

AnalysisPacientDetails apdRes = (AnalysisPacientDetails) tableVeiwResults.getSelectionModel().getSelectedItem();


apdRes.setAnalysisPacientDetailsRezultat(event.getNewValue());

                apdjpa.edit(apdRes);

tableVeiwResults.refresh();
                TablePosition pos = tableVeiwResults.getFocusModel().getFocusedCell();
                if (pos.getRow() < tableVeiwResults.getItems().size() - 1) {

tableVeiwResults.getSelectionModel().clearAndSelect(pos.getRow() + 1, pos.getTableColumn());
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            }
  }
});

Answer 1

如果我理解您的問題，您希望不提交回車（即用戶點擊標簽）就將數據提交到單元格。

我們創建了自己的定制表單元格來處理此問題。 這是一個例子。

import javafx.beans.value.ChangeListener;
import javafx.event.Event;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableColumn.CellEditEvent;
import javafx.scene.control.TablePosition;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
public class EditableStringTableCell<T, E> extends TableCell<T, String> {
    protected TextField textField;
    protected ChangeListener<? super Boolean> changeListener = (obs,ov, nv) -> {
        if (!nv) {
            commitEdit(textField.getText());
        }
    };

    public EditableStringTableCell () {

    }

    @Override
    public void startEdit() {
        if(editableProperty().get()){
            if (!isEmpty()) {
                super.startEdit();
                createTextField();
                setText(null);
                setGraphic(textField);
                textField.requestFocus();
            }
        }
    }

    @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());
                    textField.selectAll();
                }
                setText(null);
                setGraphic(textField);
            } else {
                setText(getString());
                setGraphic(null);
            }
        }
    }

    protected void createTextField() {
        textField = new TextField(getString());
        textField.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2);
        textField.focusedProperty().addListener(changeListener);
        textField.setOnAction(evt -> commitEdit(textField.getText()));

        textField.setOnKeyPressed((ke) -> {
            if (ke.getCode().equals(KeyCode.ESCAPE)) {
                textField.focusedProperty().removeListener(changeListener);
                cancelEdit();
            }
            if (ke.getCode().equals(KeyCode.TAB)) {
                commitEdit(textField.getText());
            }
        });
    }



    protected String getString() {
        return getItem() == null ? "" : getItem().toString();
    }

    @Override
    @SuppressWarnings({"unchecked", "rawtypes"})
    public void commitEdit(String item) {
        textField.focusedProperty().removeListener(changeListener);
        if (isEditing()) {
            super.commitEdit(item);
        } else {
            final TableView table = getTableView();
            if (table != null) {
                TablePosition position = new TablePosition(getTableView(),
                        getTableRow().getIndex(), getTableColumn());
                CellEditEvent editEvent = new CellEditEvent(table, position,
                        TableColumn.editCommitEvent(), item);
                Event.fireEvent(getTableColumn(), editEvent);
            }
            updateItem(item, false);
            if (table != null) {
                table.edit(-1, null);
            }

        }
    }

}