/*

  * 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;

 import java.util.Collections;

 import java.util.HashMap;

 import java.util.Map;

 import javax.el.ValueExpression;

 import javax.faces.context.FacesContext;

 import javax.faces.flow.FlowCallNode;

 import javax.faces.flow.Parameter;

 /**

  *

  * @since 2.2

  * @author Leonardo Uribe

  */

 public class FlowCallNodeImpl extends FlowCallNode implements Freezable

 {

     private String _id;

     private String _calledFlowId;

     private ValueExpression _calledFlowIdEL;

     private String _calledFlowDocumentId;

     private ValueExpression _calledFlowDocumentIdEL;

     private Map<String, Parameter> _outboundParametersMap;

     private Map<String, Parameter> _unmodifiableOutboundParametersMap;

     private boolean _initialized;

     public FlowCallNodeImpl(String id)

     {

         this._id = id;

         _outboundParametersMap = new HashMap<String, Parameter>();

         _unmodifiableOutboundParametersMap = Collections.unmodifiableMap(_outboundParametersMap);

     }

     @Override

     public Map<String, Parameter> getOutboundParameters()

     {

         return _unmodifiableOutboundParametersMap;

     }

     public void putOutboundParameter(String key, Parameter value)

     {

         checkInitialized();

         _outboundParametersMap.put(key, value);

     }

     @Override

     public String getCalledFlowDocumentId(FacesContext context)

     {

         if (_calledFlowDocumentIdEL != null)

         {

             return (String) _calledFlowDocumentIdEL.getValue(context.getELContext());

         }

         return _calledFlowDocumentId;

     }

     @Override

     public String getCalledFlowId(FacesContext context)

     {

         if (_calledFlowIdEL != null)

         {

             return (String) _calledFlowIdEL.getValue(context.getELContext());

         }

         return _calledFlowId;

     }

     @Override

     public String getId()

     {

         return _id;

     }

     public void setId(String id)

     {

         checkInitialized();

         this._id = id;

     }

     public void setCalledFlowId(String calledFlowId)

     {

         checkInitialized();

         this._calledFlowId = calledFlowId;

         this._calledFlowIdEL = null;

     }

     public void setCalledFlowDocumentId(String calledFlowDocumentId)

     {

         checkInitialized();

         this._calledFlowDocumentId = calledFlowDocumentId;

         this._calledFlowDocumentIdEL = null;

     }

     public void freeze()

     {

         _initialized = true;

         for (Map.Entry<String, Parameter> entry : _outboundParametersMap.entrySet())

         {

             if (entry.getValue() instanceof Freezable)

             {

                 ((Freezable)entry.getValue()).freeze();

             }

         }

     }

     private void checkInitialized() throws IllegalStateException

     {

         if (_initialized)

         {

             throw new IllegalStateException("Flow is inmutable once initialized");

         }

     }

     /**

      * @param calledFlowIdEL the _calledFlowIdEL to set

      */

     public void setCalledFlowId(ValueExpression calledFlowIdEL)

     {

         this._calledFlowIdEL = calledFlowIdEL;

         this._calledFlowId = null;

     }

     /**

      * @param calledFlowDocumentIdEL the _calledFlowDocumentIdEL to set

      */

     public void setCalledFlowDocumentId(ValueExpression calledFlowDocumentIdEL)

     {

         this._calledFlowDocumentIdEL = calledFlowDocumentIdEL;

         this._calledFlowDocumentId = null;

     }

 }