you can try:
<cc:implementation>
<h:commandButton
value="Ok" rendered="#{not empty cc.attrs.action and
empty cc.attrs.actionListener}"
action="#{cc.attrs.action}"
/>
<h:commandButton
value="Ok" rendered="#{not empty cc.attrs.actionListener and
empty cc.attrs.action}"
actionListener="#{cc.attrs.actionListener}"
action="#{cc.attrs.action}"
/>
<h:commandButton
value="Ok" rendered="#{not empty cc.attrs.actionListener and
not empty cc.attrs.action}"
actionListener="#{cc.attrs.actionListener}"
/>
</cc:implementation>
maybe it helps.
Att,
Rafael M. Pestano
Desenvolvedor Java Cia. de Processamento de Dados do Rio Grande do Sul
Graduando em Ciência da Computação UFRGS
http://code.google.com/p/jsf-conventions-framework/
http://rpestano.wordpress.com
http://twitter.com/realpestano
________________________________
De: José Luis Cetina <[email protected]>
Para: MyFaces Discussion <[email protected]>
Enviadas: Quinta-feira, 28 de Junho de 2012 18:28
Assunto: Custom tag
Hi i have this:
Simple custom tag:
<cc: interface componentType="my_button" >
<cc:attribute name="action" method-signature="java.lang.String action()"/>
<cc:attribute name="actionListener" method-signature="void
actionListener(javax.faces.event.ActionEvent event)"/>
</ cc:interface>
<cc:implementation>
<h:commandButton
value="Ok"
action="#{cc.attrs.action}"
actionListener="#{cc.attrs.actionListener}"
/>
</cc:implementation>
Then in my page i do:
<mytags:mybutton action="#{myBean.actionMethod}"/>
But i get a NullPointerException, this is because im not setting the
actionListener attribute, but the thing is that sometimes i need or
only action or actionlistener not both, but i have to provided both if
not i get the nullpointer.
I have to do this, but the listener method is empty in my managedbean,
i only do this for avoid the nullpointer.
<mytags:mybutton action="#{myBean.actionMethod}"
actionListener="#{myBean.actionListenerMethod}"/>
how can i avoid this?
Thanks
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SCJA. José Luis Cetina
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