JavaFX datepicker未更新值

Question

public DatePicker getDatePicker(DtDate defaultDate, int width){
    DatePicker dtpckr = new DatePicker();
    dtpckr.setMaxWidth(width);
    dtpckr.setMinWidth(width);
    dtpckr.setConverter(new StringConverter<LocalDate>() {
        private DateTimeFormatter dateTimeFormatter=DateTimeFormatter.ofPattern("yyyy/MM/dd");
        @Override
        public String toString(LocalDate localDate) {
            if(localDate==null)
                return "";
            return dateTimeFormatter.format(localDate);
        }
        @Override
        public LocalDate fromString(String dateString) {
            if(dateString==null || dateString.trim().isEmpty())
                return null;
            return LocalDate.parse(dateString,dateTimeFormatter);
        }
    });
    dtpckr.setPromptText("yyyy/MM/dd");
    dtpckr.setValue(LocalDate.parse(defaultDate.toString(), DateTimeFormatter.ofPattern("yyyy/MM/dd")));
    return dtpckr;
}

public void createSetDateAndTimeControls(){
    DtDateAndTime currentDateAndTime;
    try {
        currentDateAndTime = systemstateController.getServerDateTime();
        /*
         * Creating controls to be used on the form
         */
        int width = 150;
        DatePicker dtpckr = getDatePicker(currentDateAndTime.date, width);
        Label lblDate = new Label("Date:");
        Label lblTimeHour = new Label("Hour:");
        Label lblTimeMinute = new Label("Minute:");
        Label lblTimeSecond = new Label("Second:");
        TextField txtfldCurrentSetSecond = new TextField();
        TextField txtfldCurrentSetMinute = new TextField();
        TextField txtfldCurrentSetHour = new TextField();
        Slider sldrHourPicker = getSlider(width, SliderType.Hour, txtfldCurrentSetHour, currentDateAndTime.time);
        Slider sldrMinutePicker = getSlider(width, SliderType.Minute, txtfldCurrentSetMinute, currentDateAndTime.time);
        Slider sldrSecondPicker = getSlider(width, SliderType.Second, txtfldCurrentSetSecond, currentDateAndTime.time);
        /*
         * Adding a grid pane to keep controls in correct place and aligned correctly
         */
        GridPane grdpn = new GridPane();
        grdpn.add(lblDate, 1, 1);
        grdpn.add(dtpckr, 2, 1, 2,1);
        grdpn.add(lblTimeHour, 1, 2);
        grdpn.add(sldrHourPicker, 2, 2, 2 ,1);
        grdpn.add(txtfldCurrentSetHour, 4, 2);
        grdpn.add(lblTimeMinute, 1, 3);
        grdpn.add(sldrMinutePicker, 2, 3, 2, 1);
        grdpn.add(txtfldCurrentSetMinute, 4, 3);
        grdpn.add(lblTimeSecond, 1, 4);
        grdpn.add(sldrSecondPicker, 2, 4, 2, 1);
        grdpn.add(txtfldCurrentSetSecond, 4, 4);
        /*
         * Creating buttons for user to press
         */
        Button bttnOK = new Button("Change date and time");
        bttnOK.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                try {
                    if (checkIfAllDialogHasBeenFilledIn(grdpn)){
                        LocalDate test = dtpckr.getValue();
                        if (systemstateController.oeSetClock(ICrashUtils.setDateAndTime(dtpckr.getValue().getYear(), dtpckr.getValue().getMonthValue(), dtpckr.getValue().getDayOfMonth(),
                                (int)Math.floor(sldrHourPicker.getValue()), (int)Math.floor(sldrMinutePicker.getValue()), (int)Math.floor(sldrSecondPicker.getValue()))).getValue())
                            showOKMessage("Updated", "Date and time was updated successfully");
                        else
                            showErrorMessage("Error", "There was an error updating the date and time");
                    }
                    else
                        showUserCancelledActionPopup();
                } catch (ServerOfflineException | ServerNotBoundException e) {
                    showExceptionErrorMessage(e);
                }
            }
        });
        bttnOK.setDefaultButton(true);
        grdpn.add(bttnOK, 2, 5, 3, 1);
        Button bttnSetNow = new Button("Now");
        bttnSetNow.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                dtpckr.setValue(LocalDate.now());
                LocalTime time = LocalTime.now();
                sldrHourPicker.setValue(time.getHour());
                sldrMinutePicker.setValue(time.getMinute());
                sldrSecondPicker.setValue(time.getSecond());
            }
        });

        grdpn.add(bttnSetNow, 4, 1);
        /*
         * End of creating controls to be used on the form
         */
        anchrpnActivator.getChildren().add(grdpn);
        AnchorPane.setTopAnchor(grdpn, 0.0);
        AnchorPane.setRightAnchor(grdpn, 0.0);
        AnchorPane.setLeftAnchor(grdpn, 0.0);
        AnchorPane.setBottomAnchor(grdpn, 0.0);
    } catch (ServerOfflineException | ServerNotBoundException e) {
        showExceptionErrorMessage(e);
    }
}

其行如下：

bttnOK.setDefaultButton(true);

这意味着，如果用户在date picker控件的文本输入过程中按enter键，那么在用户将数据放入其他控件之前，就会触发onAction事件，我并不特别希望这样。

所以问题是，如果用户在框中输入文本，然后不按Enter就离开框，为什么dtpckr.getvalue()不改变呢？我找不到在用户离开datepicker框时调用的事件或datepicker的属性来获取控件的文本值并将其与dtpckr.getValue()的值进行比较。我是不是漏掉了什么？

这可能是JavaFX中当前datepicker设置中的一个bug

我可能不得不删除默认按钮，并在Jubula测试中输入一个回车键，以使其正常工作。除非有人有替代方案？

Answer 1

我在上面添加的bug日志有了答案。您可以通过以下代码访问textbox的字符串值：

datePicker.getEditor().getText();

因此，可以通过以下方式设置textbox值：

datePicker.setValue(datePicker.getConverter()
    .fromString(datePicker.getEditor().getText()));

我正在向丢失焦点事件添加一个事件，该事件将强制更新datepicker值

public DatePicker getDatePicker(DtDate defaultDate, int width){
    DatePicker dtpckr = new DatePicker();
    dtpckr.setMaxWidth(width);
    dtpckr.setMinWidth(width);
    dtpckr.setConverter(new StringConverter<LocalDate>() {
        private DateTimeFormatter dateTimeFormatter=DateTimeFormatter.ofPattern("yyyy/MM/dd");
        @Override
        public String toString(LocalDate localDate) {
            if(localDate==null)
                return "";
            return dateTimeFormatter.format(localDate);
        }
        @Override
        public LocalDate fromString(String dateString) {
            if(dateString==null || dateString.trim().isEmpty())
                return null;
            try{
                return LocalDate.parse(dateString,dateTimeFormatter);
            }
            catch(Exception e){
                //Bad date value entered
                return null;
            }
        }
    });
    dtpckr.setPromptText("yyyy/MM/dd");
    dtpckr.setValue(LocalDate.parse(defaultDate.toString(), DateTimeFormatter.ofPattern("yyyy/MM/dd")));
    //This deals with the bug located here where the datepicker value is not updated on focus lost
    //https://bugs.openjdk.java.net/browse/JDK-8092295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
    dtpckr.focusedProperty().addListener(new ChangeListener<Boolean>() {
        @Override
        public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
            if (!newValue){
                dtpckr.setValue(dtpckr.getConverter().fromString(dtpckr.getEditor().getText()));
            }
        }
    });
    return dtpckr;
}