XPages: Show validation errors for multiple/specified components

There's a lot of great stuff in XPages, but there's also a few things I miss. One of those things is message-controls that you can connect to multiple fields. It's quite easy to emulate this using a little bit of SSJS, and a xp:text.

SSJS:

// Fetch messages for specified components
function getFacesMessages( components ){
 try { 
  if( typeof components !== 'array' ){ components = [ components ]; } 
  var clientId, component, messages = [], msgIterator;  
  for( var i = 0; i < components.length; i++ ){
   component = components[i];
   if( typeof component === 'string' ){
    clientId = getClientId( component );
   } else {
    clientId = component.getClientId( facesContext );
   }
   
   msgIterator = facesContext.getMessages( clientId );
   if( !msgIterator ){ continue; }   
   while( msgIterator.hasNext() ){
    messages.push( msgIterator.next().getSummary() );
   }
  }
  return messages;  
 } catch( e ){ /*Debug.logException( e );*/ }
}

XPages source code example:

<xp:text styleClass="xspMessage" 
  escape="false" rendered="#{javascript:return ( this.value );}">
<xp:this.value>
<![CDATA[#{javascript:return getFacesMessages( [ 'field1', 'field2' ] ).join( '<br />' );}]]>
</xp:this.value>
</xp:text>

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