https://stackoverflow.com/a/47933342/597657
import com.sun.javafx.scene.control.skin.ComboBoxListViewSkin;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.beans.Observable;
import javafx.beans.property.*;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.collections.transformation.FilteredList;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Control;
import javafx.scene.control.ListView;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
import java.util.ArrayList;
import java.util.List;
public class Main extends Application
{
public static class HideableItem<T>
{
private final ObjectProperty<T> object = new SimpleObjectProperty<>();
private final BooleanProperty hidden = new SimpleBooleanProperty();
private HideableItem(T object)
{
setObject(object);
}
private ObjectProperty<T> objectProperty(){return this.object;}
private T getObject(){return this.objectProperty().get();}
private void setObject(T object){this.objectProperty().set(object);}
private BooleanProperty hiddenProperty(){return this.hidden;}
private boolean isHidden(){return this.hiddenProperty().get();}
private void setHidden(boolean hidden){this.hiddenProperty().set(hidden);}
@Override
public String toString()
{
return getObject() == null ? null : getObject().toString();
}
}
public void start(Stage stage)
{
List<String> countries = new ArrayList<>();
countries.add("Afghanistan");
countries.add("Albania");
countries.add("Algeria");
countries.add("Andorra");
countries.add("Angola");
countries.add("Antigua and Barbuda");
countries.add("Argentina");
countries.add("Armenia");
countries.add("Australia");
countries.add("Austria");
countries.add("Azerbaijan");
countries.add("Bahamas");
countries.add("Bahrain");
countries.add("Bangladesh");
countries.add("Barbados");
countries.add("Belarus");
countries.add("Belgium");
countries.add("Belize");
countries.add("Benin");
countries.add("Bhutan");
countries.add("Bolivia");
countries.add("Bosnia and Herzegovina");
countries.add("Botswana");
countries.add("Brazil");
countries.add("Brunei");
countries.add("Bulgaria");
countries.add("Burkina Faso");
countries.add("Burundi");
countries.add("Cabo Verde");
countries.add("Cambodia");
countries.add("Cameroon");
countries.add("Canada");
countries.add("Central African Republic (CAR)");
countries.add("Chad");
countries.add("Chile");
countries.add("China");
countries.add("Colombia");
countries.add("Comoros");
countries.add("Democratic Republic of the Congo");
countries.add("Republic of the Congo");
countries.add("Costa Rica");
countries.add("Cote d'Ivoire");
countries.add("Croatia");
countries.add("Cuba");
countries.add("Cyprus");
countries.add("Czech Republic");
countries.add("Denmark");
countries.add("Djibouti");
countries.add("Dominica");
countries.add("Dominican Republic");
countries.add("Ecuador");
countries.add("Egypt");
countries.add("El Salvador");
countries.add("Equatorial Guinea");
countries.add("Eritrea");
countries.add("Estonia");
countries.add("Ethiopia");
countries.add("Fiji");
countries.add("Finland");
countries.add("France");
countries.add("Gabon");
countries.add("Gambia");
countries.add("Georgia");
countries.add("Germany");
countries.add("Ghana");
countries.add("Greece");
countries.add("Grenada");
countries.add("Guatemala");
countries.add("Guinea");
countries.add("Guinea-Bissau");
countries.add("Guyana");
countries.add("Haiti");
countries.add("Honduras");
countries.add("Hungary");
countries.add("Iceland");
countries.add("India");
countries.add("Indonesia");
countries.add("Iran");
countries.add("Iraq");
countries.add("Ireland");
countries.add("Israel");
countries.add("Italy");
countries.add("Jamaica");
countries.add("Japan");
countries.add("Jordan");
countries.add("Kazakhstan");
countries.add("Kenya");
countries.add("Kiribati");
countries.add("Kosovo");
countries.add("Kuwait");
countries.add("Kyrgyzstan");
countries.add("Laos");
countries.add("Latvia");
countries.add("Lebanon");
countries.add("Lesotho");
countries.add("Liberia");
countries.add("Libya");
countries.add("Liechtenstein");
countries.add("Lithuania");
countries.add("Luxembourg");
countries.add("Macedonia (FYROM)");
countries.add("Madagascar");
countries.add("Malawi");
countries.add("Malaysia");
countries.add("Maldives");
countries.add("Mali");
countries.add("Malta");
countries.add("Marshall Islands");
countries.add("Mauritania");
countries.add("Mauritius");
countries.add("Mexico");
countries.add("Micronesia");
countries.add("Moldova");
countries.add("Monaco");
countries.add("Mongolia");
countries.add("Montenegro");
countries.add("Morocco");
countries.add("Mozambique");
countries.add("Myanmar (Burma)");
countries.add("Namibia");
countries.add("Nauru");
countries.add("Nepal");
countries.add("Netherlands");
countries.add("New Zealand");
countries.add("Nicaragua");
countries.add("Niger");
countries.add("Nigeria");
countries.add("North Korea");
countries.add("Norway");
countries.add("Oman");
countries.add("Pakistan");
countries.add("Palau");
countries.add("Palestine");
countries.add("Panama");
countries.add("Papua New Guinea");
countries.add("Paraguay");
countries.add("Peru");
countries.add("Philippines");
countries.add("Poland");
countries.add("Portugal");
countries.add("Qatar");
countries.add("Romania");
countries.add("Russia");
countries.add("Rwanda");
countries.add("Saint Kitts and Nevis");
countries.add("Saint Lucia");
countries.add("Saint Vincent and the Grenadines");
countries.add("Samoa");
countries.add("San Marino");
countries.add("Sao Tome and Principe");
countries.add("Saudi Arabia");
countries.add("Senegal");
countries.add("Serbia");
countries.add("Seychelles");
countries.add("Sierra Leone");
countries.add("Singapore");
countries.add("Slovakia");
countries.add("Slovenia");
countries.add("Solomon Islands");
countries.add("Somalia");
countries.add("South Africa");
countries.add("South Korea");
countries.add("South Sudan");
countries.add("Spain");
countries.add("Sri Lanka");
countries.add("Sudan");
countries.add("Suriname");
countries.add("Swaziland");
countries.add("Sweden");
countries.add("Switzerland");
countries.add("Syria");
countries.add("Taiwan");
countries.add("Tajikistan");
countries.add("Tanzania");
countries.add("Thailand");
countries.add("Timor-Leste");
countries.add("Togo");
countries.add("Tonga");
countries.add("Trinidad and Tobago");
countries.add("Tunisia");
countries.add("Turkey");
countries.add("Turkmenistan");
countries.add("Tuvalu");
countries.add("Uganda");
countries.add("Ukraine");
countries.add("United Arab Emirates (UAE)");
countries.add("United Kingdom (UK)");
countries.add("United States of America (USA)");
countries.add("Uruguay");
countries.add("Uzbekistan");
countries.add("Vanuatu");
countries.add("Vatican City (Holy See)");
countries.add("Venezuela");
countries.add("Vietnam");
countries.add("Yemen");
countries.add("Zambia");
countries.add("Zimbabwe");
ComboBox<HideableItem<String>> comboBox = createComboBoxWithAutoCompletionSupport(countries);
comboBox.setMaxWidth(Double.MAX_VALUE);
HBox root = new HBox();
root.getChildren().add(comboBox);
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
comboBox.setMinWidth(comboBox.getWidth());
comboBox.setPrefWidth(comboBox.getWidth());
}
public static void main(String[] args)
{
launch();
}
private static <T> ComboBox<HideableItem<T>> createComboBoxWithAutoCompletionSupport(List<T> items)
{
ObservableList<HideableItem<T>> hideableHideableItems = FXCollections.observableArrayList(hideableItem -> new Observable[]{hideableItem.hiddenProperty()});
items.forEach(item ->
{
HideableItem<T> hideableItem = new HideableItem<>(item);
hideableHideableItems.add(hideableItem);
});
FilteredList<HideableItem<T>> filteredHideableItems = new FilteredList<>(hideableHideableItems, t -> !t.isHidden());
ComboBox<HideableItem<T>> comboBox = new ComboBox<>();
comboBox.setItems(filteredHideableItems);
@SuppressWarnings("unchecked")
HideableItem<T>[] selectedItem = (HideableItem<T>[]) new HideableItem[1];
comboBox.addEventHandler(KeyEvent.KEY_PRESSED, event ->
{
if(!comboBox.isShowing()) return;
comboBox.setEditable(true);
comboBox.getEditor().clear();
});
comboBox.showingProperty().addListener((observable, oldValue, newValue) ->
{
if(newValue)
{
@SuppressWarnings("unchecked")
ListView<HideableItem> lv = ((ComboBoxListViewSkin<HideableItem>) comboBox.getSkin()).getListView();
Platform.runLater(() ->
{
if(selectedItem[0] == null) // first use
{
double cellHeight = ((Control) lv.lookup(".list-cell")).getHeight();
lv.setFixedCellSize(cellHeight);
}
});
lv.scrollTo(comboBox.getValue());
}
else
{
HideableItem<T> value = comboBox.getValue();
if(value != null) selectedItem[0] = value;
comboBox.setEditable(false);
Platform.runLater(() ->
{
comboBox.getSelectionModel().select(selectedItem[0]);
comboBox.setValue(selectedItem[0]);
});
}
});
comboBox.setOnHidden(event -> hideableHideableItems.forEach(item -> item.setHidden(false)));
comboBox.getEditor().textProperty().addListener((obs, oldValue, newValue) ->
{
if(!comboBox.isShowing()) return;
Platform.runLater(() ->
{
if(comboBox.getSelectionModel().getSelectedItem() == null)
{
hideableHideableItems.forEach(item -> item.setHidden(!item.getObject().toString().toLowerCase().contains(newValue.toLowerCase())));
}
else
{
boolean validText = false;
for(HideableItem hideableItem : hideableHideableItems)
{
if(hideableItem.getObject().toString().equals(newValue))
{
validText = true;
break;
}
}
if(!validText) comboBox.getSelectionModel().select(null);
}
});
});
return comboBox;
}
}