/*

  * 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 javax.faces.component.behavior;

 import java.util.Collection;

 import javax.faces.component.UIComponent;

 import javax.faces.context.FacesContext;

 /**

  * @since 2.0

  */

 public abstract class ClientBehaviorContext

 {

     public static ClientBehaviorContext createClientBehaviorContext(FacesContext context,

                                                                     UIComponent component,

                                                                     String eventName,

                                                                     String sourceId,

                                                                     Collection<Parameter> parameters)

     {

         // This method is weird... Creating a dummy impl class seems stupid, yet I don't see any other way...

         if(context == null)

         {

             throw new NullPointerException("context argument must not be null");

         }

         if(component == null)

         {

             throw new NullPointerException("component argument must not be null");

         }

         if(eventName == null)

         {

             throw new NullPointerException("eventName argument must not be null");

         }

         return new ClientBehaviorContextImpl(context,component,eventName,sourceId, parameters);

     }

     public abstract UIComponent getComponent();

     public abstract String getEventName();

     public abstract FacesContext getFacesContext();

     public abstract Collection<Parameter> getParameters();

     public abstract String getSourceId();

     /**

      * @since 2.0

      */

     public static class Parameter

     {

         private String _name;

         private Object _value;

         public Parameter(String name, Object value)

         {

             if (name == null)

             {

                 throw new NullPointerException("name");

             }

             _name = name;

             _value = value;

         }

         public String getName()

         {

             return _name;

         }

         public Object getValue()

         {

             return _value;

         }

     }

     private static final class ClientBehaviorContextImpl extends ClientBehaviorContext

     {

         private FacesContext _facesContext;

         private UIComponent _component;

         private String _eventName;

         private String _sourceId;

         private Collection<ClientBehaviorContext.Parameter> _parameters;

         public ClientBehaviorContextImpl(FacesContext context, UIComponent component, String eventName,

                 String sourceId, Collection<ClientBehaviorContext.Parameter> parameters)

         {

             _facesContext = context;

             _component = component;

             _eventName = eventName;

             _sourceId = sourceId;

             _parameters = parameters;            

         }

         @Override

         public UIComponent getComponent()

         {

             return _component;

         }

         @Override

         public String getEventName()

         {

             return _eventName;

         }

         @Override

         public FacesContext getFacesContext()

         {

             return _facesContext;

         }

         @Override

         public Collection<Parameter> getParameters()

         {

             return _parameters;

         }

         @Override

         public String getSourceId()

         {

             return _sourceId;

         }

     }

 }