feat!: add constructor for initializing with a locale collection

BREAKING CHANGE: removes item population from the empty constructor

src/main/java/com/flowingcode/vaadin/addons/localecombobox/LocaleComboBox.java

@@ -26,6 +26,8 @@
 import com.vaadin.flow.component.html.Span;
 import com.vaadin.flow.data.renderer.LitRenderer;
 import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
 import java.util.Locale;
 import java.util.Optional;
 
@@ -80,15 +82,22 @@ public enum DisplayMode {
   private Locale customDisplayLocale = Locale.getDefault();
 
   /**
-   * Creates a new instance of LocaleComboBox with all the installed locales.
+   * Creates a new instance of LocaleComboBox.
    */
   public LocaleComboBox() {
     setItemLabelGenerator(item -> item.getDisplayName(getLocaleForDisplay()));
     setRenderer(getLocaleRenderer());
     addValueChangeListener(this::onValueChange);
-    setItems(
-        Arrays.stream(Locale.getAvailableLocales()).filter(loc -> loc.getCountry().length() == 2)
-            .sorted((l1, l2) -> l1.getDisplayName().compareTo(l2.getDisplayName())).toList());
+  }
+
+  /**
+   * Creates a new instance of LocaleComboBox with the desired locales
+   * 
+   * @param locales the {@link Collection} of locales to include in the combobox
+   */
+  public LocaleComboBox(Collection<Locale> items) {
+    this();
+    setItems(items);
   }
 
   /**

src/test/java/com/flowingcode/vaadin/addons/localecombobox/LocaleComboBoxDemo.java

@@ -29,6 +29,8 @@
 import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
 import com.vaadin.flow.router.PageTitle;
 import com.vaadin.flow.router.Route;
+import java.util.Arrays;
+import java.util.List;
 import java.util.Locale;
 
 @DemoSource
@@ -39,21 +41,27 @@ public class LocaleComboBoxDemo extends Div {
 
   public LocaleComboBoxDemo() {
 
-    LocaleComboBox defaultDisplayLocale = new LocaleComboBox();
+    List<Locale> localeList =
+        Arrays.stream(Locale.getAvailableLocales()).filter(loc -> !loc.getDisplayName().isBlank())
+            .sorted((l1, l2) -> l1.getDisplayName().compareTo(l2.getDisplayName())).toList();
+
+    LocaleComboBox defaultDisplayLocale = new LocaleComboBox(localeList);
     LocaleComboBox koreanLocaleCombo = new LocaleComboBox();
-    LocaleComboBox selectedLocaleCombo = new LocaleComboBox();
+    LocaleComboBox selectedLocaleCombo = new LocaleComboBox(localeList);
 
     defaultDisplayLocale.setValue(Locale.ITALY);
-
+
+    koreanLocaleCombo.setItems(localeList);
     koreanLocaleCombo.setDisplayLocale(Locale.KOREA);
     koreanLocaleCombo.setDisplayMode(LocaleComboBox.DisplayMode.CUSTOM);
     koreanLocaleCombo.setValue(Locale.ITALY);
-    
+
     selectedLocaleCombo.setDisplayMode(LocaleComboBox.DisplayMode.SELECTED);
     selectedLocaleCombo.setValue(Locale.ITALY);
-    
+
     // #if vaadin eq 0
-    add(createHorizontalContainer("Default display mode (uses default locale):", defaultDisplayLocale),
+    add(createHorizontalContainer("Default display mode (uses default locale):",
+        defaultDisplayLocale),
         createHorizontalContainer("Display locales with Korean locale:", koreanLocaleCombo),
         createHorizontalContainer("Display locales with selected locale:", selectedLocaleCombo));
     // #endif