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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  package org.apache.log4j.chainsaw.prefs;
    18
    19  import java.util.*;
    20
    21  /**
    22   * @author Paul Smith &lt;psmith@apache.org&gt;
    23   */
    24  public class LoadSettingsEvent extends SettingsEvent {
    25
    26      LoadSettingsEvent(Object source, Properties properties) {
    27          super(source);
    28          this.properties = properties;
    29      }
    30
    31      public String getSetting(String key) {
    32          return properties.getProperty(key);
    33      }
    34
    35      public boolean asBoolean(String key) {
    36          return Boolean.valueOf(getSetting(key));
    37      }
    38
    39      public int asInt(String key) {
    40          String val = getSetting(key);
    41          try {
    42              return Integer.parseInt(val);
    43          } catch (NumberFormatException e) {
    44              e.printStackTrace();
    45              throw new RuntimeException(
    46                  "An error occurred retrieving the Integer value of the setting '"
    47                      + key
    48                      + "'");
    49          }
    50
    51      }
    52
    53      private final Properties properties;
    54
    55      /**
    56       * Returns an unmodifiable Collection of values whose
    57       * setting key begins (String.startsWith()) the specified
    58       * string.
    59       *
    60       * @param string
    61       */
    62      public Collection getSettingsStartingWith(String string) {
    63          Collection c = new ArrayList();
    64
    65          for (Map.Entry<Object, Object> objectObjectEntry : properties.entrySet()) {
    66              Map.Entry<Object, Object> entry = objectObjectEntry;
    67              if (entry.getKey().toString().startsWith(string)) {
    68                  c.add(entry.getValue());
    69              }
    70          }
    71
    72          return Collections.unmodifiableCollection(c);
    73
    74      }
    75  }