CODEWITHSUNDEEP
javajavafxjavafx-8
user9615409
user9615409

Reputation:

How to use LocalDate with Binding

My application contains a part where the user inputs their name, email etc. but they can also add the date (it doesn't have an initial value)

The date is a DatePicker.

What I have done is added a binding to a "submit" button to make sure that the users have inputted all the information before the button becomes available, however, I don't know how to bind to the LocalDate.

I tried this method which works (except for the date.getValue() at the end):

 public BooleanBinding isEitherFieldEmpty() { //This is for the "SUBMIT binding" to check if all text fields are empty
        return txtFirstName.textProperty().isEmpty().or(txtSurname.textProperty().isEmpty()).or
                (txtPNumber.textProperty().isEmpty()).or(txtEmail.textProperty().isEmpty()).or(date.getValue() == null);
    }

the last part: .or(date.getValue() == null); gives me an error which says

The method or(ObservableBooleanValue) in the type BooleanExpression is not applicable for the arguments (boolean)

I was wondering whether there was another way to bind the button to the LocalDate as well.

Thank you

Upvotes: 0

Views: 265

Answers (1)

James_D
James_D

Reputation: 209418

Assuming date is a DatePicker, you can just use

date.valueProperty().isNull()

which returns a BooleanBinding. I.e.:

public BooleanBinding isEitherFieldEmpty() { //This is for the "SUBMIT binding" to check if all text fields are empty
        return txtFirstName.textProperty().isEmpty()
        .or(txtSurname.textProperty().isEmpty())
        .or(txtPNumber.textProperty().isEmpty())
        .or(txtEmail.textProperty().isEmpty())
        .or(date.valueProperty().isNull());
}

Upvotes: 2

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