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Fix and improve languageSelect

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This commit is contained in:
Moritz Dieing 2021-02-05 21:39:40 +01:00
parent 8f0ca5d2ba
commit 2895f84988
1 changed files with 10 additions and 18 deletions
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26
src/main/java/edu/kit/typicalc/view/main/HelpDialog.java
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@ -2,6 +2,7 @@ package edu.kit.typicalc.view.main;
import java.util.Locale;
import com.vaadin.flow.component.ItemLabelGenerator;
import com.vaadin.flow.component.UI;
import com.vaadin.flow.component.dependency.CssImport;
import com.vaadin.flow.component.dialog.Dialog;
@ -29,20 +30,22 @@ public class HelpDialog extends Dialog implements LocaleChangeObserver {
private final H3 heading;
private final H5 inputSyntax;
private final Select<String> languageSelect;
private final Select<Locale> languageSelect;
private final ItemLabelGenerator<Locale> renderer;
/**
* Create a new HelpDialog.
*/
protected HelpDialog() {
final HorizontalLayout headingLayout = new HorizontalLayout();
renderer = item -> getTranslation("root." + item.getDisplayLanguage(Locale.ENGLISH).toLowerCase());
heading = new H3(getTranslation("root.operatingHelp"));
headingLayout.setId(HEADING_LAYOUT_ID);
languageSelect = new Select<>(getTranslation("root.german"), getTranslation("root.english"));
languageSelect = new Select<>(Locale.GERMAN, Locale.ENGLISH);
languageSelect.setTextRenderer(renderer);
languageSelect.setLabel(getTranslation("root.selectLanguage"));
languageSelect.setValue(getTranslation("root."
+ UI.getCurrent().getLocale().getDisplayLanguage(Locale.ENGLISH).toLowerCase()));
languageSelect.addValueChangeListener(event -> onLanguageChange());
languageSelect.setValue(UI.getCurrent().getLocale());
languageSelect.addValueChangeListener(event -> UI.getCurrent().setLocale(event.getValue()));
languageSelect.setId(LANGUAGE_SELECT_ID);
headingLayout.add(heading, languageSelect);
@ -54,22 +57,11 @@ public class HelpDialog extends Dialog implements LocaleChangeObserver {
add(headingLayout, contentLayout);
}
private void onLanguageChange() {
Locale newLocale;
if (languageSelect.getValue().equals(getTranslation("root.german"))) {
newLocale = Locale.GERMAN;
} else if (languageSelect.getValue().equals(getTranslation("root.english"))) {
newLocale = Locale.ENGLISH;
} else {
throw new IllegalStateException();
}
UI.getCurrent().setLocale(newLocale);
}
@Override
public void localeChange(LocaleChangeEvent event) {
heading.setText(getTranslation("root.operatingHelp"));
inputSyntax.setText(getTranslation("root.inputSyntax"));
languageSelect.setLabel(getTranslation("root.selectLanguage"));
languageSelect.setTextRenderer(renderer);
}
}