/*

  * 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.view.facelets.tag.composite;

 import java.io.Serializable;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.List;

 import javax.el.ValueExpression;

 import javax.faces.component.UIComponent;

 import javax.faces.context.FacesContext;

 import javax.faces.view.AttachedObjectTarget;

 import org.apache.myfaces.shared.util.StringUtils;

 import org.apache.myfaces.view.facelets.tag.jsf.ComponentSupport;

 /**

  * 

  * @author Leonardo Uribe (latest modification by $Author$)

  * @version $Revision$ $Date$

  */

 public class AttachedObjectTargetImpl implements AttachedObjectTarget, Serializable

 {    

     /**

      * 

      */

     private static final long serialVersionUID = -7214478234269252354L;

     protected ValueExpression _name;

     protected ValueExpression _targets;

     public AttachedObjectTargetImpl()

     {

     }

     public String getName()

     {

         if (_name != null)

         {

             return (String) _name.getValue(FacesContext.getCurrentInstance().getELContext());

         }        

         return null;

     }

     public List<UIComponent> getTargets(UIComponent topLevelComponent)

     {

         FacesContext facesContext = FacesContext.getCurrentInstance();

         String [] targetsArray = getTargets(facesContext);

         if (targetsArray.length > 0)

         {

             List<UIComponent> targetsList = new ArrayList<UIComponent>(targetsArray.length);

             final char separatorChar = facesContext.getNamingContainerSeparatorChar();

             UIComponent facetBase = topLevelComponent.getFacet(UIComponent.COMPOSITE_FACET_NAME);

             for (String target : targetsArray)

             {

                 //UIComponent innerComponent = topLevelComponent.findComponent(

                 //        topLevelComponent.getId() + UINamingContainer.getSeparatorChar(facesContext) + target);

                 int separator = target.indexOf(separatorChar);

                 UIComponent innerComponent = null;

                 if (separator == -1)

                 {

                     innerComponent = ComponentSupport.findComponentChildOrFacetFrom(

                             facetBase, target, null);

                 }

                 else

                 {

                     innerComponent = ComponentSupport.findComponentChildOrFacetFrom(

                             facetBase, target.substring(0,separator), target);

                 }

                 if (innerComponent != null)

                 {

                     targetsList.add(innerComponent);

                 }

             }

             return targetsList;

         }

         else

         {

             // composite:actionSource/valueHolder/editableValueHolder

             // "name" description says if targets is not set, name is 

             // the component id of the target component where

             // it should be mapped to

             String name = getName();

             if (name != null)

             {

                 //UIComponent innerComponent = topLevelComponent.findComponent(

                 //        topLevelComponent.getId() + UINamingContainer.getSeparatorChar(facesContext) + getName());

                 UIComponent innerComponent = ComponentSupport.findComponentChildOrFacetFrom(

                         topLevelComponent.getFacet(UIComponent.COMPOSITE_FACET_NAME),

                         name, null);

                 if (innerComponent != null)

                 {

                     List<UIComponent> targetsList = new ArrayList<UIComponent>(1);

                     targetsList.add(innerComponent);

                     return targetsList;

                 }

             }

             return Collections.emptyList();

         }

     }

     public String [] getTargets(FacesContext context)

     {

         if (_targets != null)

         {

             return StringUtils.splitShortString((String) _targets.getValue(context.getELContext()), ' ');

         }

         return org.apache.myfaces.shared.util.ArrayUtils.EMPTY_STRING_ARRAY;

     }

     public void setName(ValueExpression ve)

     {

         _name = ve;

     }

     public void setTargets(ValueExpression ve)

     {

         _targets = ve;

     }

 }