/*
    * 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.
   */
  package org.apache.myfaces.flow.builder;
  
  import javax.el.ValueExpression;
  import javax.faces.flow.builder.ReturnBuilder;
  import org.apache.myfaces.flow.FlowImpl;
  import org.apache.myfaces.flow.ReturnNodeImpl;
  import org.apache.myfaces.view.facelets.el.ELText;
  
  /**
   *
   * @since 2.2
   * @author Leonardo Uribe
   */
  public class ReturnBuilderImpl extends ReturnBuilder
  {
      private FlowBuilderImpl _flowBuilder;
      private FlowImpl _facesFlow;
      private ReturnNodeImpl _returnNode;
  
      public ReturnBuilderImpl(FlowBuilderImpl flowBuilder, FlowImpl facesFlow, String returnNodeId)
      {
          this._flowBuilder = flowBuilder;
          this._facesFlow = facesFlow;
          this._returnNode = new ReturnNodeImpl(returnNodeId);
          this._facesFlow.putReturn(returnNodeId, _returnNode);
      }
  
      @Override
      public ReturnBuilder fromOutcome(String outcome)
      {
          if (ELText.isLiteral(outcome))
          {
              this._returnNode.setFromOutcome(outcome);
          }
          else
          {
              this._returnNode.setFromOutcome(_flowBuilder.createValueExpression(outcome));
          }
          return this;
      }
  
      @Override
      public ReturnBuilder fromOutcome(ValueExpression outcome)
      {
          this._returnNode.setFromOutcome(outcome);
          return this;
      }
  
      @Override
      public ReturnBuilder markAsStartNode()
      {
          _facesFlow.setStartNodeId(_returnNode.getId());
          return this;
      }
      
  }