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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  }