/*
*    Licensed to the Apache Software Foundation (ASF) under one or more
*    contributor license agreements.  See the NOTICE file distributed with
*    this work for additional information regarding copyright ownership.
*    The ASF licenses this file to You under the Apache License, Version 2.0
*    (the "License"); you may not use this file except in compliance with
*    the License.  You may obtain a copy of the License at
*
*        http://www.apache.org/licenses/LICENSE-2.0
*
*    Unless required by applicable law or agreed to in writing, software
*    distributed under the License is distributed on an "AS IS" BASIS,
*    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*    See the License for the specific language governing permissions and
*    limitations under the License.
*/

import Ember from 'ember';
var NodeVisitor = Ember.Object.extend({
  process(node,callback,context){
    var visitedNodes=[];
    return this.visitNode(node,callback,context,visitedNodes);
  },
  visitNode(node,callback,context,visitedNodes){
    if (visitedNodes.contains(node.get("id"))){
      return;
    }
    visitedNodes.push(node.get("id"));
    callback(node,context);
    var self=this;
    if (node.transitions){
      node.transitions.forEach(function(tran){
        return self.visitNode(tran.targetNode,callback,context,visitedNodes);
      });
    }
  }
});
export {NodeVisitor};
