Execute command button after user tabs out of inputtext

Question

All,
I have a command button which is used to call a webservice. This works fine.
I also have an Inputtext field. What I want is to execute the action when the user tabs out of the inputtext.
Does any one have the solution for me ? I've not yet been able to achieve this for instance in a backing bean.
My code:
<af:inputText
value="#{bindings.pEan.inputValue}"
label="Ean-code"
required="#{bindings.pEan.mandatory}"
columns="#{bindings.pEan.displayWidth}"
autoSubmit="true">
<af:validator binding="#{bindings.pEan.validator}"/>
</af:inputText>
<af:commandButton id="BepaalVoorraad"
actionListener="#{bindings.GetStockQuote.execute}"
text="Bepaal Voorraad"
disabled="#{!bindings.GetStockQuote.enabled}"/>
The binding from my pageDef.xml:
<methodAction id="GetStockQuote" MethodName="GetStockQuote"
RequiresUpdateModel="true" Action="999" DataControl="GetStock"
InstanceName="GetStock" ReturnName="GetStock.methodResults.GetStock_GetStockQuote_result">
<NamedData NDName="pEan" NDType="java.math.BigDecimal"
NDValue="${bindings.GetStockQuote_pEan}"/>
</methodAction>

Answer 1

Set the inputText to have autosubmit on, and add a valueChangeListener to it.
<af:inputText label="Label 1"
binding="#{backing_untitled1.inputText1}"
id="inputText1"
valueChangeListener="#{backing_untitled1.valchange}"
autoSubmit="true"/>
In the method of the valueChangeListener call the method that is associated with the button.