content: /*
   * 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.chemistry.opencmis.workbench;
  
  import java.io.Serializable;
  
  import javax.swing.JTextArea;
  import javax.swing.SwingUtilities;
  
  import org.apache.logging.log4j.core.Filter;
  import org.apache.logging.log4j.core.Layout;
  import org.apache.logging.log4j.core.LogEvent;
  import org.apache.logging.log4j.core.StringLayout;
  import org.apache.logging.log4j.core.appender.AbstractAppender;
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
  import org.apache.logging.log4j.core.config.plugins.PluginElement;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  import org.apache.logging.log4j.core.layout.PatternLayout;
  
  @Plugin(name = "ClientWriterAppender", category = "Core", elementType = "appender")
  public class ClientWriterAppender extends AbstractAppender {
  
      protected ClientWriterAppender(final String name, final Filter filter, final Layout<? extends Serializable> layout) {
          super(name, filter, layout);
      }
  
      private static JTextArea logTextArea = null;
  
      public static void setTextArea(JTextArea textArea) {
          logTextArea = textArea;
      }
  
      @Override
      public void append(LogEvent event) {
          if (logTextArea == null) {
              return;
          }
  
          final String message = ((StringLayout) getLayout()).toSerializable(event);
  
          if (message.length() > 0) {
              SwingUtilities.invokeLater(new Runnable() {
                  @Override
                  public void run() {
                      logTextArea.append(message);
                  }
              });
          }
      }
  
      @PluginFactory
      public static ClientWriterAppender createAppender(@PluginAttribute("name") String name,
              @PluginAttribute("ignoreExceptions") boolean ignoreExceptions, @PluginElement("Layout") Layout<?> layout,
              @PluginElement("Filters") Filter filter) {
  
          if (name == null) {
              LOGGER.error("No name provided for ClientWriterAppender");
              return null;
          }
  
          if (layout == null) {
              layout = PatternLayout.createDefaultLayout();
          }
  
          return new ClientWriterAppender(name, filter, (StringLayout) layout);
      }
  }
  