001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 package javax.activation; 021 022 /** 023 * @version $Rev: 467553 $ $Date: 2006-10-25 06:01:51 +0200 (Mi, 25. Okt 2006) $ 024 */ 025 public abstract class CommandMap { 026 private static CommandMap defaultCommandMap = new MailcapCommandMap(); 027 028 /** 029 * Return the default CommandMap. If this has not been explictly set 030 * using setDefaultCommandMap() then a MailcapCommandMap is returned. 031 * @return the default CommandMap 032 */ 033 public static CommandMap getDefaultCommandMap() { 034 return defaultCommandMap; 035 } 036 037 /** 038 * Set the default CommandMap. 039 * 040 * @param commandMap the new default CommandMap; if null resets to a MailcapCommandMap 041 * @throws SecurityException if the caller does not have "SetFactory" RuntimePermission 042 */ 043 public static void setDefaultCommandMap(CommandMap commandMap) { 044 SecurityManager sm = System.getSecurityManager(); 045 if (sm != null) { 046 sm.checkSetFactory(); 047 } 048 defaultCommandMap = commandMap == null ? new MailcapCommandMap() : commandMap; 049 } 050 051 public CommandMap() { 052 } 053 054 public abstract CommandInfo[] getPreferredCommands(String mimeType); 055 056 public abstract CommandInfo[] getAllCommands(String mimeType); 057 058 public abstract CommandInfo getCommand(String mimeType, String cmdName); 059 060 public abstract DataContentHandler createDataContentHandler(String mimeType); 061 }