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 /*
19 */
20 package org.apache.log4j.chainsaw;
21
22 import java.util.Collection;
23
24
25 /**
26 * Implementations of this model contain all the known Logger
27 * names within it's model space.
28 *
29 * @author Paul Smith psmith@apache.org
30 */
31 public interface LoggerNameModel {
32
33 /**
34 * Returns an unmodifiable Collection of the uniquely
35 * known LoggerNames within this model.
36 *
37 * @return unmodifiable Collection of Logger name Strings
38 */
39 Collection getLoggerNames();
40
41 /**
42 * Attempts to add the loggerName to the model, and returns
43 * true if it does, i.e that the loggerName is new, otherwise
44 * it is ignored.
45 * <p>
46 * If the loggerName is new for this model, all the LoggerNameListeners
47 * are notified using this thread.
48 *
49 * @param loggerName
50 */
51 boolean addLoggerName(String loggerName);
52
53 /**
54 * The logger names have been cleared
55 */
56 void reset();
57
58 void addLoggerNameListener(LoggerNameListener l);
59
60 void removeLoggerNameListener(LoggerNameListener l);
61 }