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I18NProvider eingefügt
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package edu.kit.typicalc.view;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.Locale;
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import java.util.MissingResourceException;
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import java.util.ResourceBundle;
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import org.apache.commons.lang3.StringUtils;
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import org.springframework.stereotype.Component;
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import com.vaadin.flow.i18n.I18NProvider;
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@Component
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/**
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* Provides a simple implementation of the I18NProvider.
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* Allows for multiple languages and retrieving static Strings from .property-files.
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*/
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public class TypicalcI18NProvider implements I18NProvider {
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private static final long serialVersionUID = 8261479587838699070L;
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/**
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* Prefix of all .property-files
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*/
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public static final String BUNDLE_PREFIX = "language.translation";
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@Override
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public List<Locale> getProvidedLocales() {
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return Collections.unmodifiableList(Arrays.asList(Locale.GERMAN, Locale.ENGLISH));
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}
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@Override
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public String getTranslation(String key, Locale locale, Object... params) {
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if(key == null) {
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return StringUtils.EMPTY;
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}
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String translation;
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try {
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final ResourceBundle bundle = ResourceBundle.getBundle(BUNDLE_PREFIX, locale);
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translation = bundle.getString(key);
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} catch (final MissingResourceException exception) {
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throw new IllegalStateException("this should never happen:"
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+ " either an invalid locale is set or an invalid key is provided.");
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}
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return translation;
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}
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}
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