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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.log4j.chainsaw;
19  
20  
21  /**
22   * Chainsaw compatible gui viewers must implement this interface
23   * in order to be opened and configured by the ChainsawAppender class.
24   *
25   * @author Mark Womack
26   */
27  public interface ChainsawViewer {
28      /**
29       * Called when the viewer should activate.
30       *
31       * @param model The ChainsawAppender model instance the viewer should use.
32       */
33      void activateViewer(ChainsawAppender model);
34  }