de.micromata.genome.util.i18n.I18NTranslationProviderImpl.java Source code

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Here is the source code for de.micromata.genome.util.i18n.I18NTranslationProviderImpl.java

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//
// Copyright (C) 2010-2016 Micromata 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.micromata.genome.util.i18n;

import java.util.Enumeration;
import java.util.Locale;
import java.util.Map;
import java.util.ResourceBundle;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.commons.collections4.iterators.IteratorEnumeration;

/**
 * Translates dynamically by current locale
 * 
 * @author Roger Rene Kommer (r.kommer.extern@micromata.de)
 *
 */
public class I18NTranslationProviderImpl extends ResourceBundle implements I18NTranslationProvider {
    private Map<Locale, I18NTranslationProvider> localeToTrans = new ConcurrentHashMap<>();
    private I18NLocaleProvider localeProvider;
    private I18NTranslationResolver resolver;

    public I18NTranslationProviderImpl(I18NLocaleProvider localeProvider, I18NTranslationResolver resolver) {
        this.localeProvider = localeProvider;
        this.resolver = resolver;
    }

    protected I18NTranslationProvider getCurrentTranslationProvider() {
        Locale locale = getLocale();
        I18NTranslationProvider transpro = localeToTrans.get(locale);
        if (transpro == null) {
            transpro = resolver.getTranslationFor(locale);
            localeToTrans.put(locale, transpro);
        }
        return transpro;
    }

    @Override
    public Object getTranslationForKey(String key) {
        I18NTranslationProvider prov = getCurrentTranslationProvider();
        return prov.getTranslationForKey(key);
    }

    @Override
    public String getId() {
        I18NTranslationProvider prov = getCurrentTranslationProvider();
        return prov.getId();
    }

    @Override
    public boolean needReload() {
        return false;
    }

    @Override
    public Locale getLocale() {
        return localeProvider.getCurrentLocale();
    }

    @Override
    protected Object handleGetObject(String key) {
        return getTranslationForKey(key);
    }

    @Override
    public boolean containsKey(String key) {
        I18NTranslationProvider prov = getCurrentTranslationProvider();
        Set<String> set = prov.keySet();
        return set.contains(key);
    }

    @Override
    public Set<String> keySet() {
        I18NTranslationProvider prov = getCurrentTranslationProvider();
        return prov.keySet();
    }

    @Override
    public Enumeration<String> getKeys() {
        return new IteratorEnumeration<String>(keySet().iterator());
    }

}