ComboBoxTest.java

/*
 * This file is part of lanterna (http://code.google.com/p/lanterna/).
 *
 * lanterna is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Copyright (C) 2010-2017 Martin Berglund
 */
package com.googlecode.lanterna.gui2;

import com.googlecode.lanterna.TerminalSize;

import java.io.IOException;
import java.util.Arrays;

public class ComboBoxTest extends TestBase {
    public static void main(String[] args) throws IOException, InterruptedException {
        new ComboBoxTest().run(args);
    }

    @Override
    public void init(WindowBasedTextGUI textGUI) {
        final BasicWindow window = new BasicWindow("ComboBoxTest");
        Panel mainPanel = new Panel();

        final ComboBox<String> comboBoxReadOnly = new ComboBox<String>();
        final ComboBox<String> comboBoxEditable = new ComboBox<String>().setReadOnly(false);
        final ComboBox<String> comboBoxCJK = new ComboBox<String>().setReadOnly(false);

        for(String item: Arrays.asList("Berlin", "London", "Paris", "Stockholm", "Tokyo")) {
            comboBoxEditable.addItem(item);
            comboBoxReadOnly.addItem(item);
        }
        comboBoxCJK.addItem("维基百科人人可編輯的自由百科全書");
        comboBoxCJK.addItem("ウィキペディアは誰でも編集できるフリー百科事典です");
        comboBoxCJK.addItem("위키백과는 전 세계 여러 언어로 만들어 나가는 자유 백과사전으로, 누구나 참여하실 수 있습니다.");
        comboBoxCJK.addItem("This is a string without double-width characters");
        comboBoxCJK.setPreferredSize(new TerminalSize(13, 1));

        mainPanel.addComponent(Panels.horizontal(
                comboBoxReadOnly.withBorder(Borders.singleLine("Read-only")),
                comboBoxEditable.withBorder(Borders.singleLine("Editable")),
                comboBoxCJK.withBorder(Borders.singleLine("CJK"))));
        mainPanel.addComponent(new EmptySpace(TerminalSize.ONE));

        final TextBox textBoxNewItem = new TextBox();
        Button buttonAddItem = new Button("Add", new Runnable() {
            @Override
            public void run() {
                comboBoxEditable.addItem(textBoxNewItem.getText());
                comboBoxReadOnly.addItem(textBoxNewItem.getText());
                textBoxNewItem.setText("");
                window.setFocusedInteractable(textBoxNewItem);
            }
        });
        mainPanel.addComponent(Panels.horizontal(textBoxNewItem, buttonAddItem));

        mainPanel.addComponent(new EmptySpace(TerminalSize.ONE));
        mainPanel.addComponent(new Separator(Direction.HORIZONTAL).setLayoutData(LinearLayout.createLayoutData(LinearLayout.Alignment.Fill)));
        mainPanel.addComponent(new Button("OK", new Runnable() {
            @Override
            public void run() {
                window.close();
            }
        }));
        window.setComponent(mainPanel);
        textGUI.addWindow(window);
    }
}