How to get lost focus event in GWT

Question

I have a TextBox, and I want to do something with content after box will lose focus.
in older versions of GWT I could use FocusListener (it has methods onFocus and onLostFocus). But t is deprecated and replaced by FocusHandler.
Is FocusHandler can handle lost focus event? and how I can distinguish them from onFocus?

Answer 1

As always, the javadoc points to the replacement class(es), in this case BlurHandler.

Answer 2

In GWT we use BlurHandler for focus lost, such as below:

textBox.addBlurHandler(new BlurHandler() {

    @Override
    public void onBlur(BlurEvent event) {
        // Your Code
    }
});