Automatically select all text in a TextField when user clicks inside it

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my_tf.addEventListener(FocusEvent.FOCUS_IN, onFocusIn);
my_tf.addEventListener(FocusEvent.FOCUS_OUT, onFocusOut);
 
function onFocusIn(event:FocusEvent):void {
    setTimeout(event.target.setSelection, 50, 0, event.target.text.length);   
}
 
function onFocusOut(event:FocusEvent):void {
    event.target.setSelection(0,0);
}