Source Code Cross Referenced for ConfigScheme.java in  » Web-Mail » jwebmail-0.7 » net » wastl » webmail » config » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Mail » jwebmail 0.7 » net.wastl.webmail.config 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* $Id: ConfigScheme.java,v 1.1.1.1 2002/10/02 18:41:44 wastl Exp $ */
002:        package net.wastl.webmail.config;
003:
004:        import java.util.*;
005:
006:        /*
007:         * ConfigScheme.java
008:         *
009:         * Created: 31.08.99
010:         *
011:         * Copyright (C) 1999-2000 Sebastian Schaffert
012:         * 
013:         * This program is free software; you can redistribute it and/or
014:         * modify it under the terms of the GNU General Public License
015:         * as published by the Free Software Foundation; either version 2
016:         * of the License, or (at your option) any later version.
017:         * 
018:         * This program is distributed in the hope that it will be useful,
019:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
020:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
021:         * GNU General Public License for more details.
022:         * 
023:         * You should have received a copy of the GNU General Public License
024:         * along with this program; if not, write to the Free Software
025:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
026:         */
027:        /**
028:         * This class contains a scheme for WebMail configuration data.
029:         *
030:         * It is mainly a container for the ConfigParameter objects and a wrapper to access
031:         * the main functions in them to ease access to the scheme.
032:         *
033:         * Created: 31.08.99
034:         *
035:         * @author Sebastian Schaffert
036:         * @version $Revision: 1.1.1.1 $
037:         */
038:        public class ConfigScheme {
039:
040:            protected Hashtable config_scheme;
041:
042:            public ConfigScheme() {
043:                System.err.print("- Configuration Scheme Handler ... ");
044:                config_scheme = new Hashtable();
045:                System.err.println("done!");
046:            }
047:
048:            /**
049:             * Check whether a key/value pair is valid in this configuration scheme
050:             * @param key Name of the parameter
051:             * @param value value to check for
052:             */
053:            public boolean isValid(String key, Object value) {
054:                ConfigParameter scheme = getConfigParameter(key);
055:                if (scheme == null) {
056:                    return false;
057:                } else {
058:                    return scheme.isPossibleValue(value);
059:                }
060:            }
061:
062:            public String filter(String key, String value) {
063:                ConfigParameter c = (ConfigParameter) config_scheme.get(key);
064:                if (c != null) {
065:                    return c.filter(value);
066:                } else {
067:                    return value;
068:                }
069:            }
070:
071:            /**
072:             * Register a configuration key that can take String values
073:             * @param key Name of the configuration key
074:             * @param default Default value for this key
075:             * @param desc Description for this key
076:             */
077:            public void configRegisterStringKey(String key, String def,
078:                    String desc) {
079:                StringConfigParameter parm = new StringConfigParameter(key,
080:                        def, desc);
081:                registerConfig(parm);
082:            }
083:
084:            public void configRegisterStringKey(ConfigurationListener l,
085:                    String key, String def, String desc) {
086:                StringConfigParameter parm = new StringConfigParameter(key,
087:                        def, desc);
088:                registerConfig(parm);
089:                parm.addConfigurationListener(l);
090:            }
091:
092:            /**
093:             * Register a configuration key that can take String values
094:             * @param key Name of the configuration key
095:             * @param default Default value for this key
096:             * @param desc Description for this key
097:             */
098:            public void configRegisterIntegerKey(String key, String def,
099:                    String desc) {
100:                IntegerConfigParameter parm = new IntegerConfigParameter(key,
101:                        def, desc);
102:                registerConfig(parm);
103:            }
104:
105:            public void configRegisterIntegerKey(ConfigurationListener l,
106:                    String key, String def, String desc) {
107:                IntegerConfigParameter parm = new IntegerConfigParameter(key,
108:                        def, desc);
109:                registerConfig(parm);
110:                parm.addConfigurationListener(l);
111:            }
112:
113:            /**
114:             * Register a configuration key that can take String values and crypts them
115:             * @param key Name of the configuration key
116:             * @param default Default value for this key
117:             * @param desc Description for this key
118:             */
119:            public void configRegisterCryptedStringKey(String key, String def,
120:                    String desc) {
121:                CryptedStringConfigParameter parm = new CryptedStringConfigParameter(
122:                        key, def, desc);
123:                registerConfig(parm);
124:            }
125:
126:            public void configRegisterCryptedStringKey(ConfigurationListener l,
127:                    String key, String def, String desc) {
128:                CryptedStringConfigParameter parm = new CryptedStringConfigParameter(
129:                        key, def, desc);
130:                registerConfig(parm);
131:                parm.addConfigurationListener(l);
132:            }
133:
134:            /**
135:             * Register a configuration key that can take one of a choice of possible values
136:             * @param key Name of the configuration key
137:             * @param desc Description for this key
138:             * @see configAddChoice
139:             */
140:            public void configRegisterChoiceKey(String key, String desc) {
141:                ChoiceConfigParameter parm = new ChoiceConfigParameter(key,
142:                        desc);
143:                registerConfig(parm);
144:            }
145:
146:            public void configRegisterChoiceKey(ConfigurationListener l,
147:                    String key, String desc) {
148:                ChoiceConfigParameter parm = new ChoiceConfigParameter(key,
149:                        desc);
150:                registerConfig(parm);
151:                parm.addConfigurationListener(l);
152:            }
153:
154:            public void configRegisterYesNoKey(String key, String desc) {
155:                ChoiceConfigParameter parm = new ConfigYesNoParameter(key, desc);
156:                registerConfig(parm);
157:            }
158:
159:            public void configRegisterYesNoKey(ConfigurationListener l,
160:                    String key, String desc) {
161:                ChoiceConfigParameter parm = new ConfigYesNoParameter(key, desc);
162:                registerConfig(parm);
163:                parm.addConfigurationListener(l);
164:            }
165:
166:            /**
167:             * Add a choice to an already-existing Choice-key
168:             * @param key Name of the configuration key where a choice is to be added
169:             * @param choice Name of the new choice
170:             * @param desc Description for this choice
171:             */
172:            public void configAddChoice(String key, String choice, String desc) {
173:                if (config_scheme != null) {
174:                    ConfigParameter parm = (ConfigParameter) config_scheme
175:                            .get(key);
176:                    if (parm instanceof  ChoiceConfigParameter) {
177:                        ((ChoiceConfigParameter) parm).addChoice(choice, desc);
178:                    }
179:                }
180:            }
181:
182:            /**
183:             * Add a configuration listener for a key.
184:             * There may be any amount of Listeners for a parameter.
185:             */
186:            public void addConfigurationListener(String key,
187:                    ConfigurationListener l) {
188:                ConfigParameter parm = getConfigParameter(key);
189:                parm.addConfigurationListener(l);
190:            }
191:
192:            public ConfigParameter getConfigParameter(String key) {
193:                return (ConfigParameter) config_scheme.get(key);
194:            }
195:
196:            public String getConfigParameterType(String key) {
197:                return getConfigParameter(key).getType();
198:            }
199:
200:            public String getConfigParameterGroup(String key) {
201:                return getConfigParameter(key).getGroup();
202:            }
203:
204:            public Object getDefaultValue(String key) {
205:                ConfigParameter cp = (ConfigParameter) config_scheme.get(key);
206:                if (cp != null) {
207:                    return cp.getDefault();
208:                } else {
209:                    return null;
210:                }
211:            }
212:
213:            public void setDefaultValue(String key, Object default_value) {
214:                ConfigParameter cp = (ConfigParameter) config_scheme.get(key);
215:                if (cp != null) {
216:                    cp.setDefault(default_value);
217:                }
218:            }
219:
220:            public String getDescription(String key) {
221:                ConfigParameter cp = (ConfigParameter) config_scheme.get(key);
222:                if (cp != null) {
223:                    return cp.getDescription();
224:                } else {
225:                    return null;
226:                }
227:            }
228:
229:            public Enumeration getPossibleKeys() {
230:                return config_scheme.keys();
231:            }
232:
233:            public void notifyConfigurationChange(String key) {
234:// 	System.err.println("NOTIFY: "+key);
235:	ConfigParameter parm=getConfigParameter(key);
236:	if(parm!=null) {
237:	    Enumeration enum=parm.getConfigurationListeners();
238:	
239:	    while(enum.hasMoreElements()) {
240:		ConfigurationListener l=(ConfigurationListener)enum.nextElement();
241:// 		System.err.println(l);
242:		try {
243:		    l.notifyConfigurationChange(key);
244:		} catch(Exception e) {
245:		    e.printStackTrace();
246:		}
247:	    }
248:	}
249:    }
250:
251:            public void registerConfig(ConfigParameter parm) {
252:                if (config_scheme == null) {
253:                    config_scheme = new Hashtable();
254:                }
255:                Enumeration e = config_scheme.keys();
256:                boolean flag = false;
257:                while (e.hasMoreElements()) {
258:                    if (e.nextElement().equals(parm.getKey())) {
259:                        flag = true;
260:                        break;
261:                    }
262:                }
263:                if (!flag) {
264:                    config_scheme.put(parm.getKey(), parm);
265:                }
266:            }
267:        }
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