vaadin-framework/src/com/itmill/toolkit/terminal/gwt/client/LocaleService.java

package com.itmill.toolkit.terminal.gwt.client;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONBoolean;
import com.google.gwt.json.client.JSONNumber;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONString;

/**
 * Date / time etc. localisation service for all widgets. Caches all loaded
 * locales as JSONObjects.
 * 
 * @author IT Mill Ltd.
 * 
 */
public class LocaleService {

	private static Map cache = new HashMap();
	private static String defaultLocale;

	public static void addLocale(JSONObject json) {
		String key = ((JSONString) json.get("name")).stringValue();
		if (cache.containsKey(key))
			cache.remove(key);
		cache.put(key, json);
		if (cache.size() == 1)
			setDefaultLocale(key);
	}

	public static void setDefaultLocale(String locale) {
		defaultLocale = locale;
	}

	public static String getDefaultLocale() {
		return defaultLocale;
	}

	public static Set getAvailableLocales() {
		return cache.keySet();
	}

	public static String[] getMonthNames(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONArray mn = (JSONArray) l.get("mn");
			String[] temp = new String[12];
			temp[0] = ((JSONString) mn.get(0)).stringValue();
			temp[1] = ((JSONString) mn.get(1)).stringValue();
			temp[2] = ((JSONString) mn.get(2)).stringValue();
			temp[3] = ((JSONString) mn.get(3)).stringValue();
			temp[4] = ((JSONString) mn.get(4)).stringValue();
			temp[5] = ((JSONString) mn.get(5)).stringValue();
			temp[6] = ((JSONString) mn.get(6)).stringValue();
			temp[7] = ((JSONString) mn.get(7)).stringValue();
			temp[8] = ((JSONString) mn.get(8)).stringValue();
			temp[9] = ((JSONString) mn.get(9)).stringValue();
			temp[10] = ((JSONString) mn.get(10)).stringValue();
			temp[11] = ((JSONString) mn.get(11)).stringValue();
			return temp;
		} else
			throw new LocaleNotLoadedException(locale);
	}

	public static String[] getShortMonthNames(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONArray smn = (JSONArray) l.get("smn");
			String[] temp = new String[12];
			temp[0] = ((JSONString) smn.get(0)).stringValue();
			temp[1] = ((JSONString) smn.get(1)).stringValue();
			temp[2] = ((JSONString) smn.get(2)).stringValue();
			temp[3] = ((JSONString) smn.get(3)).stringValue();
			temp[4] = ((JSONString) smn.get(4)).stringValue();
			temp[5] = ((JSONString) smn.get(5)).stringValue();
			temp[6] = ((JSONString) smn.get(6)).stringValue();
			temp[7] = ((JSONString) smn.get(7)).stringValue();
			temp[8] = ((JSONString) smn.get(8)).stringValue();
			temp[9] = ((JSONString) smn.get(9)).stringValue();
			temp[10] = ((JSONString) smn.get(10)).stringValue();
			temp[11] = ((JSONString) smn.get(11)).stringValue();
			return temp;
		} else
			throw new LocaleNotLoadedException(locale);
	}

	public static String[] getDayNames(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONArray dn = (JSONArray) l.get("dn");
			String[] temp = new String[7];
			temp[0] = ((JSONString) dn.get(0)).stringValue();
			temp[1] = ((JSONString) dn.get(1)).stringValue();
			temp[2] = ((JSONString) dn.get(2)).stringValue();
			temp[3] = ((JSONString) dn.get(3)).stringValue();
			temp[4] = ((JSONString) dn.get(4)).stringValue();
			temp[5] = ((JSONString) dn.get(5)).stringValue();
			temp[6] = ((JSONString) dn.get(6)).stringValue();
			return temp;
		} else
			throw new LocaleNotLoadedException(locale);
	}

	public static String[] getShortDayNames(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONArray sdn = (JSONArray) l.get("sdn");
			String[] temp = new String[7];
			temp[0] = ((JSONString) sdn.get(0)).stringValue();
			temp[1] = ((JSONString) sdn.get(1)).stringValue();
			temp[2] = ((JSONString) sdn.get(2)).stringValue();
			temp[3] = ((JSONString) sdn.get(3)).stringValue();
			temp[4] = ((JSONString) sdn.get(4)).stringValue();
			temp[5] = ((JSONString) sdn.get(5)).stringValue();
			temp[6] = ((JSONString) sdn.get(6)).stringValue();
			return temp;
		} else
			throw new LocaleNotLoadedException(locale);
	}

	public static int getFirstDayOfWeek(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONNumber fdow = (JSONNumber) l.get("fdow");
			return (int) fdow.getValue();
		} else
			throw new LocaleNotLoadedException(locale);
	}

	public static String getDateFormat(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONString df = (JSONString) l.get("df");
			return df.stringValue();
		} else
			throw new LocaleNotLoadedException(locale);
	}

	public static boolean isTwelveHourClock(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONBoolean thc = (JSONBoolean) l.get("thc");
			return thc.booleanValue();
		} else
			throw new LocaleNotLoadedException(locale);
	}

	public static String getClockDelimiter(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONString hmd = (JSONString) l.get("hmd");
			return hmd.stringValue();
		} else
			throw new LocaleNotLoadedException(locale);
	}

	public static String[] getAmPmStrings(String locale)
			throws LocaleNotLoadedException {
		if (cache.containsKey(locale)) {
			JSONObject l = (JSONObject) cache.get(locale);
			JSONArray ampm = (JSONArray) l.get("ampm");
			String[] temp = new String[2];
			temp[0] = ((JSONString) ampm.get(0)).stringValue();
			temp[1] = ((JSONString) ampm.get(1)).stringValue();
			return temp;
		} else
			throw new LocaleNotLoadedException(locale);
	}

}