/*
* Copyright 2004, 2005, 2006 Odysseus Software GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package de.odysseus.calyxo.panels.conf.impl;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Locale;
import de.odysseus.calyxo.base.conf.ConfigException;
import de.odysseus.calyxo.base.conf.impl.RootConfigImpl;
import de.odysseus.calyxo.panels.conf.PanelConfig;
import de.odysseus.calyxo.panels.conf.PanelsRootConfig;
import de.odysseus.calyxo.panels.conf.PanelsConfig;
/**
*
* @author Christoph Beck
*/
public class PanelsRootConfigImpl extends RootConfigImpl implements PanelsRootConfig {
private HashMap panelsConfigsByLocale = new HashMap();
private HashMap panelsConfigs = new HashMap();
private HashMap localesByLanguage = new HashMap();
private Locale defaultLocale = new Locale("", "");
/* (non-Javadoc)
* @see de.odysseus.calyxo.base.conf.impl.RootConfigImpl#merge(de.odysseus.calyxo.base.conf.impl.RootConfigImpl)
*/
protected void merge(RootConfigImpl other) throws ConfigException {
merge((PanelsRootConfigImpl)other);
}
void merge(PanelsRootConfigImpl other) throws ConfigException {
Iterator configs = other.getPanelsConfigs();
while (configs.hasNext()) {
PanelsConfigImpl value = (PanelsConfigImpl)configs.next();
String key = getPanelsKey(value);
PanelsConfigImpl panelsConfig =
(PanelsConfigImpl)panelsConfigs.get(key);
if (panelsConfig == null) {
panelsConfigs.put(key, value);
} else {
panelsConfig.merge(value);
}
}
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.base.conf.impl.ConfigImpl#_getElementName()
*/
protected String _getElementName() {
return "calyxo-panels-config";
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.base.conf.impl.ConfigImpl#_addChildren(de.odysseus.calyxo.base.conf.impl.ConfigImpl.Elements)
*/
protected void _addChildren(Elements list) {
super._addChildren(list);
list.add(getPanelsConfigs());
}
/**
* Initialize panels by locale lookup.
* @see de.odysseus.calyxo.base.conf.impl.ConfigImpl#_init2()
*/
protected void _init2() throws ConfigException {
super._init2();
Iterator iter = panelsConfigs.values().iterator();
while (iter.hasNext()) {
PanelsConfigImpl value = (PanelsConfigImpl)iter.next();
panelsConfigsByLocale.put(value.getLocale(), value);
}
}
/**
* Create panels key. This key is used until the locales
* of panels elements have been computed.
*/
private String getPanelsKey(PanelsConfigImpl value) {
StringBuffer key = new StringBuffer();
if (value.getLanguage() != null) {
key.append(value.getLanguage());
if (value.getCountry() != null) {
key.append("_");
key.append(value.getCountry());
if (value.getVariant() != null) {
key.append("_");
key.append(value.getVariant());
}
}
}
return key.toString();
}
/**
* Lookup panel by name and locale (exact match).
*/
private PanelConfig getPanelConfig(String name, Locale locale) {
PanelsConfig panelsConfig = (PanelsConfig)panelsConfigsByLocale.get(locale);
if (panelsConfig != null) {
PanelConfig panelConfig = panelsConfig.getPanelConfig(name);
if (panelConfig != null) {
return panelConfig;
}
}
return null;
}
/**
* Get locale specified by language and country codes from locale cache.
* This method is used by to find locale generalizations. A new locale
* instance is created and cached if necessary.
*/
private Locale getCachedLocale(String language, String country) {
HashMap byCountry = (HashMap)localesByLanguage.get(language);
if (byCountry == null) {
localesByLanguage.put(language, byCountry = new HashMap());
}
Locale locale = (Locale)byCountry.get(country);
if (locale == null) {
byCountry.put(country, locale = new Locale(language, country));
}
return locale;
}
/**
* Generalize locale
*/
Locale generalize(Locale locale) {
if (locale == defaultLocale) { // quick check
return null;
} else {
if (locale.getVariant().length() > 0) {
return getCachedLocale(locale.getLanguage(), locale.getCountry());
} else if (locale.getCountry().length() > 0) {
return getCachedLocale(locale.getLanguage(), "");
} else if (locale.getLanguage().length() > 0) {
return defaultLocale;
}
return null;
}
}
/**
* Add panels element
*/
public void add(PanelsConfigImpl value) throws ConfigException {
String key = getPanelsKey(value);
if (panelsConfigs.containsKey(key)) {
throw new ConfigException("Duplicate panels for key '" + key + "' in " + toInlineString());
}
panelsConfigs.put(key, value);
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.panels.conf.PanelsRootConfig#getPanelsConfigs()
*/
public Iterator getPanelsConfigs() {
return panelsConfigs.values().iterator();
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.panels.conf.PanelsRootConfig#findPanelConfig(java.lang.String, java.util.Locale)
*/
public PanelConfig findPanelConfig(String name, Locale locale) {
if (locale == null) {
locale = defaultLocale;
}
do {
PanelConfig result = getPanelConfig(name, locale);
if (result != null)
return result;
locale = generalize(locale);
} while (locale != null);
return null;
}
}