ConfigScheme.java
上传用户:huihesys
上传日期:2007-01-04
资源大小:3877k
文件大小:7k
- /* $Id: ConfigScheme.java,v 1.3 2000/04/06 08:02:01 wastl Exp $ */
- package net.wastl.webmail.config;
- import java.util.*;
- /*
- * ConfigScheme.java
- *
- * Created: 31.08.99
- *
- * Copyright (C) 1999-2000 Sebastian Schaffert
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- /**
- * This class contains a scheme for WebMail configuration data.
- *
- * It is mainly a container for the ConfigParameter objects and a wrapper to access
- * the main functions in them to ease access to the scheme.
- *
- * Created: 31.08.99
- *
- * @author Sebastian Schaffert
- * @version $Revision: 1.3 $
- */
- public class ConfigScheme {
-
- protected Hashtable config_scheme;
- public ConfigScheme() {
- System.err.print("- Configuration Scheme Handler ... ");
- config_scheme=new Hashtable();
- System.err.println("done!");
- }
- /**
- * Check whether a key/value pair is valid in this configuration scheme
- * @param key Name of the parameter
- * @param value value to check for
- */
- public boolean isValid(String key, Object value) {
- ConfigParameter scheme=getConfigParameter(key);
- if(scheme==null) {
- return false;
- } else {
- return scheme.isPossibleValue(value);
- }
- }
- public String filter(String key, String value) {
- ConfigParameter c=(ConfigParameter)config_scheme.get(key);
- if(c!=null) {
- return c.filter(value);
- } else {
- return value;
- }
- }
- /**
- * Register a configuration key that can take String values
- * @param key Name of the configuration key
- * @param default Default value for this key
- * @param desc Description for this key
- */
- public void configRegisterStringKey(String key, String def, String desc) {
- StringConfigParameter parm=new StringConfigParameter(key,def,desc);
- registerConfig(parm);
- }
- public void configRegisterStringKey(ConfigurationListener l,String key, String def, String desc) {
- StringConfigParameter parm=new StringConfigParameter(key,def,desc);
- registerConfig(parm);
- parm.addConfigurationListener(l);
- }
- /**
- * Register a configuration key that can take String values
- * @param key Name of the configuration key
- * @param default Default value for this key
- * @param desc Description for this key
- */
- public void configRegisterIntegerKey(String key, String def, String desc) {
- IntegerConfigParameter parm=new IntegerConfigParameter(key,def,desc);
- registerConfig(parm);
- }
- public void configRegisterIntegerKey(ConfigurationListener l,String key, String def, String desc) {
- IntegerConfigParameter parm=new IntegerConfigParameter(key,def,desc);
- registerConfig(parm);
- parm.addConfigurationListener(l);
- }
- /**
- * Register a configuration key that can take String values and crypts them
- * @param key Name of the configuration key
- * @param default Default value for this key
- * @param desc Description for this key
- */
- public void configRegisterCryptedStringKey(String key, String def, String desc) {
- CryptedStringConfigParameter parm=new CryptedStringConfigParameter(key,def,desc);
- registerConfig(parm);
- }
- public void configRegisterCryptedStringKey(ConfigurationListener l,String key, String def, String desc) {
- CryptedStringConfigParameter parm=new CryptedStringConfigParameter(key,def,desc);
- registerConfig(parm);
- parm.addConfigurationListener(l);
- }
- /**
- * Register a configuration key that can take one of a choice of possible values
- * @param key Name of the configuration key
- * @param desc Description for this key
- * @see configAddChoice
- */
- public void configRegisterChoiceKey(String key, String desc) {
- ChoiceConfigParameter parm=new ChoiceConfigParameter(key,desc);
- registerConfig(parm);
- }
- public void configRegisterChoiceKey(ConfigurationListener l,String key, String desc) {
- ChoiceConfigParameter parm=new ChoiceConfigParameter(key,desc);
- registerConfig(parm);
- parm.addConfigurationListener(l);
- }
- public void configRegisterYesNoKey(String key, String desc) {
- ChoiceConfigParameter parm=new ConfigYesNoParameter(key,desc);
- registerConfig(parm);
- }
- public void configRegisterYesNoKey(ConfigurationListener l,String key, String desc) {
- ChoiceConfigParameter parm=new ConfigYesNoParameter(key,desc);
- registerConfig(parm);
- parm.addConfigurationListener(l);
- }
- /**
- * Add a choice to an already-existing Choice-key
- * @param key Name of the configuration key where a choice is to be added
- * @param choice Name of the new choice
- * @param desc Description for this choice
- */
- public void configAddChoice(String key, String choice, String desc) {
- if(config_scheme!=null) {
- ConfigParameter parm=(ConfigParameter)config_scheme.get(key);
- if(parm instanceof ChoiceConfigParameter) {
- ((ChoiceConfigParameter)parm).addChoice(choice,desc);
- }
- }
- }
- /**
- * Add a configuration listener for a key.
- * There may be any amount of Listeners for a parameter.
- */
- public void addConfigurationListener(String key,ConfigurationListener l) {
- ConfigParameter parm=getConfigParameter(key);
- parm.addConfigurationListener(l);
- }
- public ConfigParameter getConfigParameter(String key) {
- return (ConfigParameter)config_scheme.get(key);
- }
- public String getConfigParameterType(String key) {
- return getConfigParameter(key).getType();
- }
- public String getConfigParameterGroup(String key) {
- return getConfigParameter(key).getGroup();
- }
- public Object getDefaultValue(String key) {
- ConfigParameter cp=(ConfigParameter)config_scheme.get(key);
- if(cp!=null) {
- return cp.getDefault();
- } else {
- return null;
- }
- }
- public String getDescription(String key) {
- ConfigParameter cp=(ConfigParameter)config_scheme.get(key);
- if(cp!=null) {
- return cp.getDescription();
- } else {
- return null;
- }
- }
- public Enumeration getPossibleKeys() {
- return config_scheme.keys();
- }
- public void notifyConfigurationChange(String key) {
- // System.err.println("NOTIFY: "+key);
- ConfigParameter parm=getConfigParameter(key);
- if(parm!=null) {
- Enumeration enum=parm.getConfigurationListeners();
-
- while(enum.hasMoreElements()) {
- ConfigurationListener l=(ConfigurationListener)enum.nextElement();
- // System.err.println(l);
- try {
- l.notifyConfigurationChange(key);
- } catch(Exception e) {
- e.printStackTrace();
- }
- }
- }
- }
- public void registerConfig(ConfigParameter parm) {
- if(config_scheme == null) {
- config_scheme=new Hashtable();
- }
- Enumeration e=config_scheme.keys();
- boolean flag=false;
- while(e.hasMoreElements()) {
- if(e.nextElement().equals(parm.getKey())) {
- flag=true;
- break;
- }
- }
- if(!flag) {
- config_scheme.put(parm.getKey(),parm);
- }
- }
- }
-