tobago-core/src/main/java/org/apache/myfaces/tobago/internal/component/AbstractUIPanel.java

/*
 * 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.internal.component;

import org.apache.myfaces.tobago.renderkit.RendererBase;
import org.apache.myfaces.tobago.util.AjaxUtils;
import org.apache.myfaces.tobago.util.ComponentUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.faces.component.behavior.ClientBehaviorHolder;
import javax.faces.context.FacesContext;
import javax.faces.render.Renderer;
import java.io.IOException;
import java.lang.invoke.MethodHandles;

/**
 * {@link org.apache.myfaces.tobago.internal.taglib.component.PanelTagDeclaration}
 */
public abstract class AbstractUIPanel extends AbstractUICollapsiblePanel implements ClientBehaviorHolder {

  private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

  @Override
  public void encodeAll(FacesContext facesContext) throws IOException {

    final AbstractUIReload reload = ComponentUtils.getReloadFacet(this);

    if (reload != null && AjaxUtils.isAjaxRequest(facesContext) && reload.isRendered() && !reload.isUpdate()) {
      // do not render content
      final Renderer renderer = getRenderer(facesContext);
      if (renderer instanceof RendererBase) {
        ((RendererBase) renderer).encodeReload(facesContext, reload);
      } else {
        LOG.warn("Found reload facet but no renderer support for it id='{}'!", getClientId(facesContext));
      }
    } else {
      super.encodeAll(facesContext);
    }
  }
}