/*
    * 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.shared.renderkit.html;
  
  import org.apache.myfaces.shared.renderkit.JSFAttr;
  import org.apache.myfaces.shared.renderkit.RendererUtils;
  import org.apache.myfaces.shared.renderkit.html.util.ResourceUtils;
  
  import javax.faces.component.UIComponent;
  import javax.faces.component.UISelectMany;
  import javax.faces.component.UISelectOne;
  import javax.faces.component.behavior.ClientBehavior;
  import javax.faces.component.behavior.ClientBehaviorHolder;
  import javax.faces.component.html.HtmlSelectManyListbox;
  import javax.faces.component.html.HtmlSelectOneListbox;
  import javax.faces.context.FacesContext;
  import javax.faces.convert.Converter;
  import javax.faces.convert.ConverterException;
  import java.io.IOException;
  import java.util.List;
  import java.util.Map;
  
  
  public class HtmlListboxRendererBase
          extends HtmlSelectableRendererBase
  {
      public void encodeEnd(FacesContext facesContext, UIComponent uiComponent)
              throws IOException
      {
          org.apache.myfaces.shared.renderkit.RendererUtils.checkParamValidity(facesContext, uiComponent, null);
          
          Map<String, List<ClientBehavior>> behaviors = null;
          if (uiComponent instanceof ClientBehaviorHolder)
          {
              behaviors = ((ClientBehaviorHolder) uiComponent).getClientBehaviors();
              if (!behaviors.isEmpty())
              {
                  ResourceUtils.renderDefaultJsfJsInlineIfNecessary(
                          facesContext, facesContext.getResponseWriter());
              }
          }
  
          Integer size = (Integer)uiComponent.getAttributes().get(JSFAttr.SIZE_ATTR);
          if (size == null)
          {
              size = Integer.MIN_VALUE;
          }
  
          if (uiComponent instanceof UISelectMany)
          {
              renderListbox(facesContext,
                                              (UISelectMany)uiComponent,
                                              isDisabled(facesContext, uiComponent),
                                              size, getConverter(facesContext, uiComponent));
          }
          else if (uiComponent instanceof HtmlSelectOneListbox)
          {
              renderListbox(facesContext,
                                              (UISelectOne)uiComponent,
                                              isDisabled(facesContext, uiComponent),
                                              size, getConverter(facesContext, uiComponent));
          }
          else
          {
              throw new IllegalArgumentException("Unsupported component class " + uiComponent.getClass().getName());
          }
      }
      
      protected void renderListbox(FacesContext facesContext,
              UISelectOne selectOne, boolean disabled, int size,
              Converter converter) throws IOException
      {
          internalRenderSelect(facesContext, selectOne, disabled, size, false,
                  converter);
      }
  
      protected void renderListbox(FacesContext facesContext,
              UISelectMany selectMany, boolean disabled, int size,
              Converter converter) throws IOException
      {
          internalRenderSelect(facesContext, selectMany, disabled, size, true,
                  converter);
      }
 
     protected boolean isDisabled(FacesContext facesContext, UIComponent uiComponent)
     {
         //TODO: overwrite in extended HtmlListboxRenderer and check for enabledOnUserRole
         if (uiComponent instanceof HtmlSelectManyListbox)
         {
             return ((HtmlSelectManyListbox)uiComponent).isDisabled();
         }
         else if (uiComponent instanceof HtmlSelectOneListbox)
         {
             return ((HtmlSelectOneListbox)uiComponent).isDisabled();
         }
         else
         {
             return org.apache.myfaces.shared.renderkit.RendererUtils.getBooleanAttribute(uiComponent, 
                     org.apache.myfaces.shared.renderkit.html.HTML.DISABLED_ATTR, false);
         }
     }
 
 
     public void decode(FacesContext facesContext, UIComponent uiComponent)
     {
         RendererUtils.checkParamValidity(facesContext, uiComponent, null);
 
         if (uiComponent instanceof UISelectMany)
         {
             HtmlRendererUtils.decodeUISelectMany(facesContext, uiComponent);
         }
         else if (uiComponent instanceof UISelectOne)
         {
             HtmlRendererUtils.decodeUISelectOne(facesContext, uiComponent);
         }
         else
         {
             throw new IllegalArgumentException("Unsupported component class " + uiComponent.getClass().getName());
         }
         if (uiComponent instanceof ClientBehaviorHolder &&
                 !HtmlRendererUtils.isDisabled(uiComponent))
         {
             HtmlRendererUtils.decodeClientBehaviors(facesContext, uiComponent);
         }
     }
 
     public Object getConvertedValue(FacesContext facesContext, UIComponent uiComponent, Object submittedValue)
          throws ConverterException
     {
         org.apache.myfaces.shared.renderkit.RendererUtils.checkParamValidity(facesContext, uiComponent, null);
 
         if (uiComponent instanceof UISelectMany)
         {
             return org.apache.myfaces.shared.renderkit.RendererUtils.getConvertedUISelectManyValue(facesContext,
                                                                (UISelectMany)uiComponent,
                                                                submittedValue);
         }
         else if (uiComponent instanceof UISelectOne)
         {
             return RendererUtils.getConvertedUISelectOneValue(facesContext,
                                                            (UISelectOne)uiComponent,
                                                            submittedValue);
         }
         else
         {
             throw new IllegalArgumentException("Unsupported component class " + uiComponent.getClass().getName());
         }
     }
     
     /**
      * Gets the converter for the given component rendered by this renderer.
      * @param facesContext
      * @param component
      * @return
      */
     protected Converter getConverter(FacesContext facesContext,
             UIComponent component)
     {
         if (component instanceof UISelectMany)
         {
             return HtmlRendererUtils.findUISelectManyConverterFailsafe(facesContext, 
                     (UISelectMany) component);
         }
         else if (component instanceof UISelectOne)
         {
             return HtmlRendererUtils.findUIOutputConverterFailSafe(facesContext, component);
         }
         return null;
     }
 
 }