/*

  * 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 java.util.ArrayList;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import javax.el.ValueExpression;

 import javax.faces.flow.builder.NavigationCaseBuilder;

 import org.apache.myfaces.flow.FlowImpl;

 import org.apache.myfaces.flow.NavigationCaseImpl;

 /**

  *

  * @author lu4242

  */

 public class NavigationCaseBuilderImpl extends NavigationCaseBuilder

 {

     private FlowImpl _facesFlow;

     private FlowBuilderImpl _flowBuilder;

     private NavigationCaseImpl _navigationCaseImpl;

     public NavigationCaseBuilderImpl(FlowBuilderImpl flowBuilder, FlowImpl facesFlow)

     {

         this._flowBuilder = flowBuilder;

         this._facesFlow = facesFlow;

         this._navigationCaseImpl = new NavigationCaseImpl();

     }

     @Override

     public NavigationCaseBuilder fromViewId(String fromViewId)

     {

         // This is the best place to add the navigation case into the flow, because

         // fromViewId is required (cannot be null, and null does not mean '*')

         if (this._navigationCaseImpl.getFromViewId() != null)

         {

             this._facesFlow.removeNavigationCase(_navigationCaseImpl);

         }

         if (fromViewId != null)

         {

             this._navigationCaseImpl.setFromViewId(fromViewId);

             this._facesFlow.addNavigationCase(_navigationCaseImpl);

         }

         return this;

     }

     @Override

     public NavigationCaseBuilder fromAction(String fromAction)

     {

         this._navigationCaseImpl.setFromAction(fromAction);

         return this;

     }

     @Override

     public NavigationCaseBuilder fromOutcome(String fromOutcome)

     {

         this._navigationCaseImpl.setFromOutcome(fromOutcome);

         return this;

     }

     @Override

     public NavigationCaseBuilder toViewId(String toViewId)

     {

         this._navigationCaseImpl.setToViewId(toViewId);

         return this;

     }

     @Override

     public NavigationCaseBuilder toFlowDocumentId(String toFlowDocumentId) 

     {

         this._navigationCaseImpl.setToFlowDocumentId(toFlowDocumentId);

         return this;

     }

     @Override

     public NavigationCaseBuilder condition(String condition)

     {

         this._navigationCaseImpl.setConditionExpression(null);

         this._navigationCaseImpl.setCondition(condition);

         return this;

     }

     @Override

     public NavigationCaseBuilder condition(ValueExpression condition)

     {

         this._navigationCaseImpl.setCondition(null);

         this._navigationCaseImpl.setConditionExpression(condition);

         return this;

     }

     @Override

     public RedirectBuilder redirect()

     {

         this._navigationCaseImpl.setRedirect(true);

         return new RedirectBuilderImpl();

     }

     public class RedirectBuilderImpl extends RedirectBuilder

     {

         @Override

         public RedirectBuilder parameter(String name, String value)

         {

             //_navigationCaseImpl.

             Map<String, List<String>> map = _navigationCaseImpl.getParameters();

             if (map == null)

             {

                 map = new HashMap<String, List<String>>();

                 _navigationCaseImpl.setParameters(map);

             }

             List<String> values = map.get(name);

             if (values == null)

             {

                 values = new ArrayList<String>();

                 map.put(name, values);

             }

             values.add(value);

             return this;

         }

         @Override

         public RedirectBuilder includeViewParams()

         {

             _navigationCaseImpl.setIncludeViewParams(true);

             return this;

         }

     }

 }