//{HEADER
/**
* This class is part of jnex 'Nexirius Application Framework for Java'
*
* Copyright (C) Nexirius GmbH, CH-4450 Sissach, Switzerland (www.nexirius.ch)
*
* <p>This library is free software; you can redistribute it and/or<br>
* modify it under the terms of the GNU Lesser General Public<br>
* License as published by the Free Software Foundation; either<br>
* version 2.1 of the License, or (at your option) any later version.</p>
*
* <p>This library is distributed in the hope that it will be useful,<br>
* but WITHOUT ANY WARRANTY; without even the implied warranty of<br>
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU<br>
* Lesser General Public License for more details.</p>
*
* <p>You should have received a copy of the GNU Lesser General Public<br>
* License along with this library; if not, write to the Free Software<br>
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</p>
* </blockquote>
*
* <p>
* Nexirius GmbH, hereby disclaims all copyright interest in<br>
* the library jnex' 'Nexirius Application Framework for Java' written<br>
* by Marcel Baumann.</p>
*/
//}HEADER
package com.nexirius.util.support;
import com.nexirius.framework.datamodel.SimpleArrayModel;
import com.nexirius.util.StringVector;
import com.nexirius.util.resource.ClientResource;
/**
* This class is a singleton which acts as a server for all currency related informations.
*/
public class CurrencyManager {
public static final String CURRENCY_CODES = "CurrencyCodes";
protected static String DEFAULT_CURRENCY_NUMBER_FORMAT = "#,##0.00;-#,##0.00";
protected static double DEFAULT_CURRENCY_ROUNDING_DENOMINATOR = 0.01;
private static CurrencyManager instance = null;
ClientResource resource;
protected SimpleArrayModel currencyCodes = null;
public static void init(ClientResource resource) {
if (isInitialized()) {
throw new RuntimeException("Can't initialize CurrencyManager more than once");
}
instance = new CurrencyManager(resource);
}
public static boolean isInitialized() {
return instance != null;
}
public static CurrencyManager getInstance() {
if (isInitialized()) {
return instance;
}
throw new RuntimeException("Can't access CurrencyManager instance before initialisation");
}
public static void setInstance(CurrencyManager manager) {
instance = manager;
}
public CurrencyManager() {
}
private CurrencyManager(ClientResource resource) {
this.resource = resource;
}
public SimpleArrayModel getCurrencyCodes() {
if (currencyCodes == null) {
// get the list of available currency codes
String codes = resource.getText(CURRENCY_CODES);
if (codes == null) {
throw new RuntimeException(CURRENCY_CODES + " must be defined in the resources (comma separated list)");
}
StringVector codesVector = new StringVector(codes, ", \t");
currencyCodes = new SimpleArrayModel(codesVector.getArray(), CURRENCY_CODES);
}
return currencyCodes;
}
public String getNumberFormat(String currencyCode) {
String ret = resource.getCurrencyNumberFormat(currencyCode);
if (ret == null) {
ret = DEFAULT_CURRENCY_NUMBER_FORMAT;
}
return ret;
}
public double getRoundingDenominator(String currencyCode) {
double ret = resource.getCurrencyRoundingDenominator(currencyCode);
if (ret == 0.0) {
ret = DEFAULT_CURRENCY_ROUNDING_DENOMINATOR;
}
return ret;
}
}