ObservableBooleanValue

protected ObservableBooleanValue caretVisible;
/**
* The caret is visible when the text box is focused AND when the selection
* is empty. If the selection is non empty or the text box is not focused
* then we don't want to show the caret. Also, we show the caret while
* performing some operations such as most key strokes. In that case we
* simply toggle its opacity.
* <p>
*/
caretVisible = new BooleanBinding() {
{
bind((richTextArea.focusedProperty()), richTextArea.anchorProperty(), richTextArea.caretPositionProperty(),
richTextArea.disabledProperty(), blink);
}
@Override
protected boolean computeValue() {
return !blink.get() && richTextArea.isFocused() && !richTextArea.isDisabled() && !isHideCaret() &&
// RT-10682: On Windows, we show the caret during selection, but on others we hide it
(isWindows() || richTextArea.getCaretPosition() == richTextArea.getAnchorPosition());
}
};