OnFocusChange

```
@Retention(RUNTIME)
@Target(FIELD)
public @interface OnFocusChange
```
A binding that will call one method when the bound component loses focus, and another method when focus is gained.

- Optional Element Summary
  
  Optional Elements
  Modifier and Type Optional Element Description
  
  java.lang.String gained
  
  java.lang.String lost

Element Detail
- lost
```
java.lang.String lost
```
  Default:
  
  ""

- gained
```
java.lang.String gained
```
  Default:
  
  ""