AutoComplete javaFx ComboBox items not showing after "clearing selection" - javafx

Question

I'm trying to make an autocomplete combobox in javafx and im almost done but every time i try to submit and clear selection so the user can choose another choice , all the items get hidden except the one he chose last time
// this the class that i used turn a normal combobox to an autocomplete one
public class AutoCompleteComboBoxListener<T> implements EventHandler<KeyEvent> {
private ComboBox<T> comboBox;
private ObservableList<T> data;
private boolean moveCaretToPos = false;
private int caretPos;
public AutoCompleteComboBoxListener(final ComboBox<T> comboBox) {
this.comboBox = comboBox;
data = comboBox.getItems();
this.comboBox.setEditable(true);
this.comboBox.setOnKeyReleased(AutoCompleteComboBoxListener.this);
this.showOnFocus();
}
#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;
}
if (event.getCode() == KeyCode.RIGHT || event.getCode() == KeyCode.LEFT
|| event.isControlDown() || event.getCode() == KeyCode.HOME
|| event.getCode() == KeyCode.END || event.getCode() == KeyCode.TAB) {
return;
}
System.out.println(caretPos);
comboBox.hide();
if(event.getCode() == KeyCode.BACK_SPACE) {
moveCaretToPos = true;
caretPos = comboBox.getEditor().getCaretPosition();
} else if(event.getCode() == KeyCode.DELETE) {
moveCaretToPos = true;
caretPos = comboBox.getEditor().getCaretPosition();
}
ObservableList<T> 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();
String editorText;
editorText=comboBox.getEditor().getText();
list.sort((a, b) -> Integer.compare(a.toString().length(), b.toString().length()));
comboBox.getSelectionModel().selectFirst();
comboBox.getEditor().setText(editorText);
moveCaret(comboBox.getSelectionModel().getSelectedItem().toString().length());
}
if (event.getCode()==KeyCode.ENTER){
comboBox.hide();
comboBox.getEditor().setText(comboBox.getSelectionModel().getSelectedItem().toString());
}
}
private void moveCaret(int textLength) {
if(caretPos == -1)
comboBox.getEditor().positionCaret(textLength);
else
comboBox.getEditor().positionCaret(caretPos);
moveCaretToPos = false;
}
public void showOnFocus(){
this.comboBox.focusedProperty().addListener((obs, oldVal, newVal) ->
this.comboBox.show());
}
}
// and this is what the submit button does the the comboboxes
button.setOnAction(e-> {
combo1.getSelectionModel().clearSelection();
combo1.getSelectionModel().clearSelection();
});