jiangxincode / ApkToolBoxGUI / #631

    public AutoCompleter(JComboBox<E> comboBox) {

        if (comboBox == null) {

            throw new AutoCompleterInitException("comboBox is null");

        this.comboBox = comboBox;

        ComboBoxEditor comboBoxEditor = comboBox.getEditor();

        if (comboBoxEditor == null) {

            throw new AutoCompleterInitException("comboBoxEditor is null");

        Component component = comboBoxEditor.getEditorComponent();

        if (!(component instanceof JTextField)) {

            throw new AutoCompleterInitException("component is invalid");

        this.textField = (JTextField) component;

        this.textField.addKeyListener(this);

        this.comboBoxModel = comboBox.getModel();

    }

    }

    }

        char keyChar = e.getKeyChar();

        if (Character.isAlphabetic(keyChar) || Character.isDigit(keyChar) || Character.isWhitespace(keyChar)

            String text = textField.getText();

            autoComplete(text);

            textField.setText(text);

    }

        E[] opts = getMatchingOptions(text);

        comboBox.setModel(new DefaultComboBoxModel<>(opts));

        if (comboBox.getItemCount() > 0) {

            comboBox.showPopup();

    }

        List<E> list = new ArrayList<>();

        ComboBoxModel<E> tmp = this.comboBoxModel;

        for (int i = 0; i < tmp.getSize(); i++) {

            E itemObj = tmp.getElementAt(i);

            if (StringUtils.isEmpty(text) || StringUtils.containsIgnoreCase(itemObj.toString(), text)) {

                list.add(itemObj);

        return (E[]) list.toArray();