Package org.apache.myfaces.tobago.renderkit.html.scarborough.standard.tag

Source Code of org.apache.myfaces.tobago.renderkit.html.scarborough.standard.tag.LabelRenderer

package org.apache.myfaces.tobago.renderkit.html.scarborough.standard.tag;

/*
* 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.
*/

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.internal.util.Deprecation;
import org.apache.myfaces.tobago.layout.LayoutBase;
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.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);

    // 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 {

    // todo: remove test after 1.5.0, then UILabel is required
    if (!(component instanceof UILabel)) {
      Deprecation.LOG.warn("LabelRenderer should only render UILabel but got " + component.getClass().getName()
          + " id=" + component.getClientId(facesContext));
    }
    TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);

    LabelWithAccessKey label = new LabelWithAccessKey(component);

    String forValue = ComponentUtils.findClientIdFor(component, facesContext);

    String clientId = component.getClientId(facesContext);
    writer.startElement(HtmlElements.LABEL, component);
    HtmlRendererUtils.renderDojoDndItem(component, writer, true);
    final Classes classes = Classes.create(component);
    writer.writeClassAttribute(classes);
    if (component instanceof LayoutBase) {
      Style style = new Style(facesContext, (LayoutBase) component);
      writer.writeStyleAttribute(style);
    }
    writer.writeIdAttribute(clientId);
    if (forValue != null) {
      writer.writeAttribute(HtmlAttributes.FOR, forValue, false);
    }

    HtmlRendererUtils.renderTip(component, writer);

    if (label.getText() != null) {
      HtmlRendererUtils.writeLabelWithAccessKey(writer, label);
    }

    if (label.getAccessKey() != null) {
      if (LOG.isInfoEnabled()
          && !AccessKeyMap.addAccessKey(facesContext, label.getAccessKey())) {
        LOG.info("dublicated accessKey : " + label.getAccessKey());
      }
      HtmlRendererUtils.addClickAcceleratorKey(facesContext, clientId, label.getAccessKey());
    }
    writer.endElement(HtmlElements.LABEL);
  }
}
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