/***
/* launch_foaf_explorer 0.3 by Charles Nepote <charles@nepote.org> (2007-06-14)
   Licence GPL v. 2.
   
   launch_foaf_explorer is a script for the Firefox Extension Operator 0.8a
   (see http://www.kaply.com/weblog/2007/06/04/operator-08a-is-available/ )

   It launch the Foaf file of a given resource on 2 conditions :
  -- the resource is a foaf:Person
  -- the resource is defined by an external URI with the rdfs:isDefinedBy property
*/

var foaf_explorer = {
  /* description : will be shown as an action for a given subject */
  description: "Show with Foaf Explorer",
  /* icon : ? */
  /* icon: "http://xml.mfd-consult.dk/images/foaf-explorer.32.png", */
  scope: {
    semantic: {
      "RDFa" :  {
        /* property which is concerned by this action */
        property : "http://www.w3.org/1999/02/22-rdf-syntax-ns#type",
	defaultNS : "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
      }
    }
  },
  doAction: function(semanticObject, semanticObjectType) {
    if (semanticObjectType == "RDFa") {
      var so = semanticObject;
      var isDefinedBy = so.model.getProperty(so.subject, "http://www.w3.org/2000/01/rdf-schema#isDefinedBy");
      /* If the object is a foaf:Person and is defined by an external URI (rdfs:isDefinedBy) */
      /* then launch the foaf file with foaf explorer */
      if (so.type == "http://xmlns.com/foaf/0.1/Person" && isDefinedBy) {
        /* alert (so.type); /* debug */
        return "http://xml.mfd-consult.dk/foaf/explorer/?foaf=" + isDefinedBy;
      }
    }
  }
};

SemanticActions.add("foaf_explorer", foaf_explorer);