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Java Build a JavaFX Application Build a Pomodoro App Build the State Change Events

Kevin Faust
Kevin Faust
15,353 Points
Posted by Kevin Faust
Kevin Faust
15,353 Points

confused with getStyleClass() and the toString()

Hey everyone,

I am confused with this line of code

container.getStyleClass().add(kind.toString().toLowerCase());

I get how we first select our vBox and we put the enum in string format into our fxml. How would it look like in our fxml? In terms of how would the code look like after we add it (Where in the code is it added to)?

Also when we call the toString() method on the enum, what is returned? We didn't override it so would it return the default memory location like with objects?

Thank you

3 Answers

Craig Dennis
STAFF
Craig Dennis
Treehouse Teacher
Craig Dennis
Craig Dennis
Treehouse Teacher

Hey Kevin!

Great question! The toString of an enum returns the current enum's name (or key). 

AttemptKind.FOCUS.toString(); // returns "FOCUS"

Make sense?

Kevin Faust
Kevin Faust
15,353 Points
Kevin Faust
Kevin Faust
15,353 Points

Hey Craig,

Makes sense. Thanks!

Jeremiah Shore
Jeremiah Shore
31,168 Points
Jeremiah Shore
Jeremiah Shore
31,168 Points

Thanks for clarifying! What we were doing wasn't completely clear until I read this and the question below from Amanda Lam and the answer from Benjamin Keller. Thanks everyone.

Benjamin Keller
Benjamin Keller
20,763 Points
Benjamin Keller
Benjamin Keller
20,763 Points

I couldn't find documentation with .getStyleClass() in it, but what I'm positive about is .getStyleClass().add("class") adds the CSS class to the node, and .getStyleClass().remove("class") would remove it, so

 private void addAttemptStyle(AttemptKind kind) {
        container.getStyleClass().add(kind.toString().toLowerCase());
    }

would mean the class with the same name(lowercased) would effect the node with fx:id="container". For instance FOCUS, would mean the background color is the grey, #2D3339.

.focus {
    -fx-background-color: #2D3339;
}

because the in home.fxml the VBox has the fx:id="container" and is linked to the correct stylesheet.

<VBox stylesheets="/css/main.css"
      xmlns="http://javafx.com/javafx/8"
      xmlns:fx="http://javafx.com/fxml"
      fx:controller="com.teamtreehouse.pomodoro.controllers.Home"
      fx:id="container">
Amanda Lam
Amanda Lam
2,178 Points
Amanda Lam
Amanda Lam
2,178 Points

What does container.getStyleClass() return or what is it suppose to be doing?