/*
    * 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.tobago.renderkit.html.scarborough.standard.tag;
  
  import org.apache.myfaces.tobago.component.UILabel;
  import org.apache.myfaces.tobago.context.Markup;
  import org.apache.myfaces.tobago.internal.util.AccessKeyMap;
  import org.apache.myfaces.tobago.renderkit.LabelWithAccessKey;
  import org.apache.myfaces.tobago.renderkit.LayoutComponentRendererBase;
  import org.apache.myfaces.tobago.renderkit.css.Classes;
  import org.apache.myfaces.tobago.renderkit.css.Style;
  import org.apache.myfaces.tobago.renderkit.html.HtmlAttributes;
  import org.apache.myfaces.tobago.renderkit.html.HtmlElements;
  import org.apache.myfaces.tobago.renderkit.html.util.HtmlRendererUtils;
  import org.apache.myfaces.tobago.util.ComponentUtils;
  import org.apache.myfaces.tobago.webapp.TobagoResponseWriter;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.component.UIComponent;
  import javax.faces.component.UIInput;
  import javax.faces.context.FacesContext;
  import java.io.IOException;
  
  public class LabelRenderer extends LayoutComponentRendererBase {
  
    private static final Logger LOG = LoggerFactory.getLogger(LabelRenderer.class);
  
    @Override
    public void prepareRender(FacesContext facesContext, UIComponent component) throws IOException {
      super.prepareRender(facesContext, component);
  
      ComponentUtils.evaluateAutoFor(component, UIInput.class);
  
      // adding the markups from the corresponding input component
      final UILabel label = (UILabel) component;
      final UIComponent corresponding = ComponentUtils.findFor(label);
      if (corresponding != null) {
        Markup markup = label.getCurrentMarkup();
        markup = ComponentUtils.updateMarkup(corresponding, markup);
        label.setCurrentMarkup(markup);
      }
    }
  
    public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
  
      UILabel label = (UILabel) component;
      TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
  
      String forValue = ComponentUtils.findClientIdFor(label, facesContext);
  
      String clientId = label.getClientId(facesContext);
      writer.startElement(HtmlElements.LABEL, label);
      HtmlRendererUtils.writeDataAttributes(facesContext, writer, label);
      HtmlRendererUtils.renderDojoDndItem(label, writer, true);
      final Classes classes = Classes.create(label);
      writer.writeClassAttribute(classes);
      writer.writeStyleAttribute(new Style(facesContext, label));
      writer.writeIdAttribute(clientId);
      if (forValue != null) {
        writer.writeAttribute(HtmlAttributes.FOR, forValue, false);
      }
      HtmlRendererUtils.renderTip(label, writer);
  
      encodeTextContent(facesContext, writer, label);
  
      writer.endElement(HtmlElements.LABEL);
    }
  
    /** Encodes the text inside of the label. 
     * Can be overwritten in other themes.
     */
    protected void encodeTextContent(FacesContext facesContext, TobagoResponseWriter writer, UILabel label) 
        throws IOException {
      String clientId = label.getClientId(facesContext);
      LabelWithAccessKey key = new LabelWithAccessKey(label);
      if (key.getAccessKey() != null) {
        writer.writeAttribute(HtmlAttributes.ACCESSKEY, Character.toString(key.getAccessKey()), false);
      }
      if (key.getText() != null) {
        HtmlRendererUtils.writeLabelWithAccessKey(writer, key);
      }
     if (key.getAccessKey() != null) {
       if (LOG.isInfoEnabled()
           && !AccessKeyMap.addAccessKey(facesContext, key.getAccessKey())) {
         LOG.info("Duplicated accessKey : " + key.getAccessKey());
       }
       HtmlRendererUtils.addClickAcceleratorKey(facesContext, clientId, key.getAccessKey());
     }
   }
 }