JavaFX中的AutoComplete ComboBox

Question

我正在寻找一种向JavaFX添加自动完成功能的方法ComboBox.在搜索了很多之后,是时候在这里问了一下.

这AutoFillBox是众所周知的,但不是我正在搜索的内容.我想要的是一个可编辑的组合框,输入列表时应该过滤掉.但是我也希望打开列表而不打字并查看整个项目.

任何的想法？

Answer 1

首先,您必须在项目中创建此类:

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.scene.control.ComboBox;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;

public class FxUtilTest {

    public interface AutoCompleteComparator<T> {
        boolean matches(String typedText, T objectToCompare);
    }

    public static<T> void autoCompleteComboBoxPlus(ComboBox<T> comboBox, AutoCompleteComparator<T> comparatorMethod) {
        ObservableList<T> data = comboBox.getItems();

        comboBox.setEditable(true);
        comboBox.getEditor().focusedProperty().addListener(observable -> {
            if (comboBox.getSelectionModel().getSelectedIndex() < 0) {
                comboBox.getEditor().setText(null);
            }
        });
        comboBox.addEventHandler(KeyEvent.KEY_PRESSED, t -> comboBox.hide());
        comboBox.addEventHandler(KeyEvent.KEY_RELEASED, new EventHandler<KeyEvent>() {

            private boolean moveCaretToPos = false;
            private int caretPos;

            @Override
            public void handle(KeyEvent event) {
                if (event.getCode() == KeyCode.UP) {
                    caretPos = -1;
                    if (comboBox.getEditor().getText() != null) {
                        moveCaret(comboBox.getEditor().getText().length());
                    }
                    return;
                } else if (event.getCode() == KeyCode.DOWN) {
                    if (!comboBox.isShowing()) {
                        comboBox.show();
                    }
                    caretPos = -1;
                    if (comboBox.getEditor().getText() != null) {
                        moveCaret(comboBox.getEditor().getText().length());
                    }
                    return;
                } else if (event.getCode() == KeyCode.BACK_SPACE) {
                    if (comboBox.getEditor().getText() != null) {
                        moveCaretToPos = true;
                        caretPos = comboBox.getEditor().getCaretPosition();
                    }
                } else if (event.getCode() == KeyCode.DELETE) {
                    if (comboBox.getEditor().getText() != null) {
                        moveCaretToPos = true;
                        caretPos = comboBox.getEditor().getCaretPosition();
                    }
                } else if (event.getCode() == KeyCode.ENTER) {
                    return;
                }

                if (event.getCode() == KeyCode.RIGHT || event.getCode() == KeyCode.LEFT || event.getCode().equals(KeyCode.SHIFT) || event.getCode().equals(KeyCode.CONTROL)
                        || event.isControlDown() || event.getCode() == KeyCode.HOME
                        || event.getCode() == KeyCode.END || event.getCode() == KeyCode.TAB) {
                    return;
                }

                ObservableList<T> list = FXCollections.observableArrayList();
                for (T aData : data) {
                    if (aData != null && comboBox.getEditor().getText() != null && comparatorMethod.matches(comboBox.getEditor().getText(), aData)) {
                        list.add(aData);
                    }
                }
                String t = "";
                if (comboBox.getEditor().getText() != null) {
                    t = comboBox.getEditor().getText();
                }

                comboBox.setItems(list);
                comboBox.getEditor().setText(t);
                if (!moveCaretToPos) {
                    caretPos = -1;
                }
                moveCaret(t.length());
                if (!list.isEmpty()) {
                    comboBox.show();
                }
            }

            private void moveCaret(int textLength) {
                if (caretPos == -1) {
                    comboBox.getEditor().positionCaret(textLength);
                } else {
                    comboBox.getEditor().positionCaret(caretPos);
                }
                moveCaretToPos = false;
            }
        });
    }

    public static<T> T getComboBoxValue(ComboBox<T> comboBox){
        if (comboBox.getSelectionModel().getSelectedIndex() < 0) {
            return null;
        } else {
            return comboBox.getItems().get(comboBox.getSelectionModel().getSelectedIndex());
        }
    }

}

要使您的组合框自动完成,请使用如下:

FxUtilTest.autoCompleteComboBoxPlus(myComboBox, (typedText, itemToCompare) -> itemToCompare.getName().toLowerCase().contains(typedText.toLowerCase()) || itemToCompare.getAge().toString().equals(typedText));

当你需要从组合框中获取选定的值时,请务必使用此方法,否则您可能会遇到一些例外情况,例如"类强制转换异常":

FxUtilTest.getComboBoxValue(myComboBox);

PS:这个方法在jre 8.51和8.65之间的版本中存在一些问题,导致一些奇怪的行为,现在问题似乎不再发生了.如果您遇到某些问题,可以看到对此答案所做的编辑,并获取当时修复问题的旧版本.这个方法必须正常,如果您遇到任何问题,请告诉我.

Answer 2

我找到了一个适合我的解决方案:

public class AutoCompleteComboBoxListener<T> implements EventHandler<KeyEvent> {

    private ComboBox comboBox;
    private StringBuilder sb;
    private ObservableList<T> data;
    private boolean moveCaretToPos = false;
    private int caretPos;

    public AutoCompleteComboBoxListener(final ComboBox comboBox) {
        this.comboBox = comboBox;
        sb = new StringBuilder();
        data = comboBox.getItems();

        this.comboBox.setEditable(true);
        this.comboBox.setOnKeyPressed(new EventHandler<KeyEvent>() {

            @Override
            public void handle(KeyEvent t) {
                comboBox.hide();
            }
        });
        this.comboBox.setOnKeyReleased(AutoCompleteComboBoxListener.this);
    }

    @Override
    public void handle(KeyEvent event) {

        if(event.getCode() == KeyCode.UP) {
            caretPos = -1;
            moveCaret(comboBox.getEditor().getText().length());
            return;
        } else if(event.getCode() == KeyCode.DOWN) {
            if(!comboBox.isShowing()) {
                comboBox.show();
            }
            caretPos = -1;
            moveCaret(comboBox.getEditor().getText().length());
            return;
        } else if(event.getCode() == KeyCode.BACK_SPACE) {
            moveCaretToPos = true;
            caretPos = comboBox.getEditor().getCaretPosition();
        } else if(event.getCode() == KeyCode.DELETE) {
            moveCaretToPos = true;
            caretPos = comboBox.getEditor().getCaretPosition();
        }

        if (event.getCode() == KeyCode.RIGHT || event.getCode() == KeyCode.LEFT
                || event.isControlDown() || event.getCode() == KeyCode.HOME
                || event.getCode() == KeyCode.END || event.getCode() == KeyCode.TAB) {
            return;
        }

        ObservableList list = FXCollections.observableArrayList();
        for (int i=0; i<data.size(); i++) {
            if(data.get(i).toString().toLowerCase().startsWith(
                AutoCompleteComboBoxListener.this.comboBox
                .getEditor().getText().toLowerCase())) {
                list.add(data.get(i));
            }
        }
        String t = comboBox.getEditor().getText();

        comboBox.setItems(list);
        comboBox.getEditor().setText(t);
        if(!moveCaretToPos) {
            caretPos = -1;
        }
        moveCaret(t.length());
        if(!list.isEmpty()) {
            comboBox.show();
        }
    }

    private void moveCaret(int textLength) {
        if(caretPos == -1) {
            comboBox.getEditor().positionCaret(textLength);
        } else {
            comboBox.getEditor().positionCaret(caretPos);
        }
        moveCaretToPos = false;
    }

}

你可以用它来调用它

new AutoCompleteComboBoxListener<>(comboBox);

它基于此,我根据自己的需求进行了定制.

如果有人可以改进它,请随意使用它,告诉我.

Answer 3

使用ControlsFX库,您可以使用两行代码完成:

comboBox.setEditable(true);
TextFields.bindAutoCompletion(comboBox.getEditor(), comboBox.getItems());

Answer 4

根据Jonatan的回答,我能够构建以下解决方案:

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;
    }
}

更新:

在Java 9+中,您可以访问ListView以下内容:

ListView<ComboBoxItem> lv = (ListView<ComboBoxItem>) ((ComboBoxListViewSkin<?>) comboBox.getSkin()).getPopupContent();

Answer 5

我发现 Eng Fouad 的 答案是整体上最好的（即使是 10,000 多个项目）但是，我必须修复 3 个错误：

1. 当您单击 时SHIFT，编辑器消失了

2. 当您键入时SPACE，ComboBox将关闭

3. 当您“清除选择”然后打开组合框并关闭它而不选择任何内容时，它会重新选择最后一个项目。

我还添加了一个StringConverter使用 Apache StringUtils的传递，用于比较以及将 Streams 移动到常规 for 循环以达到性能目的：https : //blog.jooq.org/2015/12/08/3-reasons-why -you-shouldnt-replace-your-for-loops-by-stream-foreach/

同样根据Eng Fouad的回答，

在 Java 9+ 中，您可以ListView像这样访问：

ListView<ComboBoxItem> lv = (ListView<ComboBoxItem>) ((ComboBoxListViewSkin<?>) comboBox.getSkin()).getPopupContent();

示例用法：

List<Locale> locales = Arrays.asList(Locale.getAvailableLocales());
ComboBox<HideableItem<Locale>> dropDown = AutoCompleteComboBox.createComboBoxWithAutoCompletionSupport(locales, new StringConverter<HideableItem<Locale>>()
{
                        
    @Override
    public String toString(HideableItem<Locale> object)
    {
        if(object!=null)
        {                    
            return object.getObject().getDisplayName();
        }else
        {
           return null;
        }
    }

    @Override
    public HideableItem<Locale> fromString(String string)
    {
        Locale foundLocale = locales.stream().filter((Locale i)
                        -> (i.getDisplayName()).equals(string)).findFirst().orElse(null);
        return new HideableItem(foundLocale, this);
    }
    
});

自动完成组合框.java

import com.sun.javafx.scene.control.skin.ComboBoxListViewSkin;
import java.util.List;
import javafx.application.Platform;
import javafx.beans.Observable;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.collections.transformation.FilteredList;
import javafx.event.Event;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Control;
import javafx.scene.control.ListView;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.util.StringConverter;
import org.apache.commons.lang3.StringUtils;

public class AutoCompleteComboBox
{

    public static class HideableItem<T>
    {

        private final ObjectProperty<T> object = new SimpleObjectProperty<>();
        private final BooleanProperty hidden = new SimpleBooleanProperty();
        private StringConverter converter;

        public HideableItem(T object, StringConverter converter)
        {
            setConverter(converter);
            setObject(object);

        }

        private ObjectProperty<T> objectProperty()
        {
            return this.object;
        }

        public 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);
        }

        private void setConverter(StringConverter converter)
        {
            this.converter = converter;
        }

        @Override
        public String toString()
        {
            return getObject() == null ? null : converter.toString(this);
        }
    }

    public static <T> ComboBox<HideableItem<T>> createComboBoxWithAutoCompletionSupport(List<T> items, StringConverter converter)
    {
        ObservableList<HideableItem<T>> hideableHideableItems = FXCollections.observableArrayList(hideableItem -> new Observable[]
        {
            hideableItem.hiddenProperty()
        });

        for (T item : items)
        {
            HideableItem<T> hideableItem = new HideableItem<>(item, converter);
            hideableHideableItems.add(hideableItem);
        }

        FilteredList<HideableItem<T>> filteredHideableItems = new FilteredList<>(hideableHideableItems, t -> !t.isHidden());

        ComboBox<HideableItem<T>> comboBox = new ComboBox<>();
        comboBox.setItems(filteredHideableItems);
        comboBox.setConverter(converter);

        ComboBoxListViewSkin<HideableItem<T>> comboBoxListViewSkin = new ComboBoxListViewSkin<HideableItem<T>>(comboBox);
        comboBoxListViewSkin.getPopupContent().addEventFilter(KeyEvent.ANY, (KeyEvent event) ->
        {
            if (event.getCode() == KeyCode.SPACE)
            {
                event.consume();
            }
        });
        comboBox.setSkin(comboBoxListViewSkin);

        @SuppressWarnings("unchecked")
        HideableItem<T>[] selectedItem = (HideableItem<T>[]) new HideableItem[1];

        comboBox.addEventHandler(KeyEvent.KEY_PRESSED, event ->
        {
            if (!comboBox.isShowing() || event.isShiftDown() || event.isControlDown())
            {
                return;
            }
            comboBox.setEditable(true);
            comboBox.getEditor().clear();
        });

        comboBox.showingProperty().addListener((ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean 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);
                if (value != null)
                {
                    Platform.runLater(() ->
                    {
                        comboBox.getSelectionModel().select(selectedItem[0]);
                        comboBox.setValue(selectedItem[0]);
                    });
                }

            }
        });

        comboBox.setOnHidden((Event event) ->
        {
            for (HideableItem item : hideableHideableItems)
            {
                item.setHidden(false);
            }
        });
        comboBox.valueProperty().addListener((ObservableValue<? extends HideableItem<T>> obs, HideableItem<T> oldValue, HideableItem<T> newValue) ->
        {
            if (newValue == null)
            {
                for (HideableItem item : hideableHideableItems)
                {
                    item.setHidden(false);
                }
            }
        });

        comboBox.getEditor().textProperty().addListener((ObservableValue<? extends String> obs, String oldValue, String newValue) ->
        {
            if (!comboBox.isShowing())
            {
                return;
            }

            Platform.runLater(() ->
            {
                if (comboBox.getSelectionModel().getSelectedItem() == null)
                {
                    for (HideableItem item : hideableHideableItems)
                    {
                        item.setHidden(!StringUtils.containsIgnoreCase(item.toString(), newValue));
                    }
                } else
                {

                    boolean validText = false;

                    for (HideableItem hideableItem : hideableHideableItems)
                    {
                        if (hideableItem.toString().equals(newValue))
                        {
                            validText = true;
                            break;
                        }
                    }

                    if (!validText)
                    {
                        comboBox.getSelectionModel().select(null);
                    }
                }
            });
        });

        return comboBox;
    }
}