/*
    * 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 java.io.IOException;
  import java.util.List;
  import java.util.Map;
  
  import javax.faces.component.UIComponent;
  import javax.faces.component.UIOutcomeTarget;
  import javax.faces.component.behavior.ClientBehavior;
  import javax.faces.component.behavior.ClientBehaviorHolder;
  import javax.faces.component.html.HtmlOutcomeTargetButton;
  import javax.faces.context.ExternalContext;
  import javax.faces.context.FacesContext;
  import javax.faces.context.ResponseWriter;
  
  import org.apache.myfaces.shared.renderkit.ClientBehaviorEvents;
  import org.apache.myfaces.shared.renderkit.JSFAttr;
  import org.apache.myfaces.shared.renderkit.RendererUtils;
  import org.apache.myfaces.shared.renderkit.html.util.ResourceUtils;
  
  /**
   * @since 2.0
   */
  public class HtmlOutcomeTargetButtonRendererBase extends HtmlRenderer
  {
  
      public boolean getRendersChildren()
      {
          return true;
      }
  
      public void encodeBegin(FacesContext facesContext, UIComponent uiComponent)
              throws IOException
      {
          super.encodeBegin(facesContext, uiComponent); //check for NP
  
          String clientId = uiComponent.getClientId(facesContext);
  
          ResponseWriter writer = facesContext.getResponseWriter();
  
          Map<String, List<ClientBehavior>> behaviors = null;
          if (uiComponent instanceof ClientBehaviorHolder)
          {
              behaviors = ((ClientBehaviorHolder) uiComponent).getClientBehaviors();
              if (!behaviors.isEmpty())
              {
                  ResourceUtils.renderDefaultJsfJsInlineIfNecessary(facesContext, facesContext.getResponseWriter());
              }
          }
  
          writer.startElement(HTML.INPUT_ELEM, uiComponent);
  
          writer.writeAttribute(HTML.ID_ATTR, clientId, JSFAttr.ID_ATTR);
          writer.writeAttribute(HTML.NAME_ATTR, clientId, JSFAttr.ID_ATTR);
  
          String image = getImage(uiComponent);
          ExternalContext externalContext = facesContext.getExternalContext();
  
          if (image != null)
          {
              // type="image"
              writer.writeAttribute(HTML.TYPE_ATTR, HTML.INPUT_TYPE_IMAGE, JSFAttr.TYPE_ATTR);
              String src = facesContext.getApplication().getViewHandler().getResourceURL(facesContext, image);
              writer.writeURIAttribute(HTML.SRC_ATTR, externalContext.encodeResourceURL(src), JSFAttr.IMAGE_ATTR);
          }
          else
          {
              // type="button"
              writer.writeAttribute(HTML.TYPE_ATTR, HTML.INPUT_TYPE_BUTTON, JSFAttr.TYPE_ATTR);
              Object value = RendererUtils.getStringValue(facesContext, uiComponent);
              if (value != null)
              {
                  writer.writeAttribute(HTML.VALUE_ATTR, value, JSFAttr.VALUE_ATTR);
              }
          }
  
          String outcomeTargetHref = HtmlRendererUtils.getOutcomeTargetHref(
                      facesContext, (UIOutcomeTarget) uiComponent);
  
          if (HtmlRendererUtils.isDisabled(uiComponent) || outcomeTargetHref == null)
          {
             // disable the button - if disabled is true or no fitting NavigationCase was found
             HtmlRendererUtils.renderHTMLAttribute(writer, HTML.DISABLED_ATTR, HTML.DISABLED_ATTR, true);
         }
         else
         {
             // render onClick attribute
             String href = facesContext.getExternalContext().encodeResourceURL(outcomeTargetHref);
 
             String commandOnClick = (String) uiComponent.getAttributes().get(HTML.ONCLICK_ATTR);
             String navigationJavaScript = "window.location.href = '" + href + "'";
 
             if (behaviors != null && !behaviors.isEmpty())
             {
                 HtmlRendererUtils.renderBehaviorizedAttribute(facesContext, writer, HTML.ONCLICK_ATTR, 
                         uiComponent, ClientBehaviorEvents.CLICK, null, behaviors, HTML.ONCLICK_ATTR, 
                         commandOnClick, navigationJavaScript);
             }
             else
             {
                 StringBuilder onClick = new StringBuilder();
     
                 if (commandOnClick != null)
                 {
                     onClick.append(commandOnClick);
                     onClick.append(';');
                 }
                 onClick.append(navigationJavaScript);
     
                 writer.writeAttribute(HTML.ONCLICK_ATTR, onClick.toString(), null);
             }
         }
 
         if (isCommonPropertiesOptimizationEnabled(facesContext))
         {
             long commonPropertiesMarked = CommonPropertyUtils.getCommonPropertiesMarked(uiComponent);
             
             if (behaviors != null && !behaviors.isEmpty() && uiComponent instanceof ClientBehaviorHolder)
             {
                 HtmlRendererUtils.renderBehaviorizedEventHandlersWithoutOnclick(
                         facesContext, writer, uiComponent, behaviors);
                 HtmlRendererUtils.renderBehaviorizedFieldEventHandlersWithoutOnchangeAndOnselect(
                         facesContext, writer, uiComponent, behaviors);
             }
             else
             {
                 CommonPropertyUtils.renderEventPropertiesWithoutOnclick(
                         writer, commonPropertiesMarked, uiComponent);
                 CommonPropertyUtils.renderFocusBlurEventProperties(writer, commonPropertiesMarked, uiComponent);
             }
             
             CommonPropertyUtils.renderCommonFieldPassthroughPropertiesWithoutDisabledAndEvents(
                     writer, commonPropertiesMarked, uiComponent);
             if ((commonPropertiesMarked & CommonPropertyConstants.ALT_PROP) != 0)
             {
                 HtmlRendererUtils.renderHTMLStringAttribute(writer, uiComponent,
                         HTML.ALT_ATTR, HTML.ALT_ATTR);
             }
         }
         else
         {
             if (uiComponent instanceof ClientBehaviorHolder)
             {
                 HtmlRendererUtils.renderBehaviorizedEventHandlersWithoutOnclick(
                         facesContext, writer, uiComponent, behaviors);
                 HtmlRendererUtils.renderBehaviorizedFieldEventHandlersWithoutOnchangeAndOnselect(
                         facesContext, writer, uiComponent, behaviors);
             }
             else
             {
                 HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent,
                         HTML.EVENT_HANDLER_ATTRIBUTES_WITHOUT_ONCLICK);
                 HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent,
                         HTML.COMMON_FIELD_EVENT_ATTRIBUTES_WITHOUT_ONSELECT_AND_ONCHANGE);
     
             }
             HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent,
                     HTML.COMMON_FIELD_PASSTROUGH_ATTRIBUTES_WITHOUT_DISABLED_AND_EVENTS);
             HtmlRendererUtils.renderHTMLStringAttribute(writer, uiComponent,
                     HTML.ALT_ATTR, HTML.ALT_ATTR);
         }
 
         writer.flush();
     }
 
     private String getImage(UIComponent uiComponent)
     {
         if (uiComponent instanceof HtmlOutcomeTargetButton)
         {
             return ((HtmlOutcomeTargetButton) uiComponent).getImage();
         }
         return (String) uiComponent.getAttributes().get(JSFAttr.IMAGE_ATTR);
     }
 
     public void encodeChildren(FacesContext facesContext, UIComponent component)
             throws IOException
     {
         RendererUtils.renderChildren(facesContext, component);
     }
 
     public void encodeEnd(FacesContext facesContext, UIComponent component)
             throws IOException
     {
         super.encodeEnd(facesContext, component); //check for NP
 
         ResponseWriter writer = facesContext.getResponseWriter();
 
         writer.endElement(HTML.INPUT_ELEM);
     }
 }