/**
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 *
 * Copyright 2012-2015 the original author or authors.
 */
package org.assertj.swing.driver;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.util.Arrays.array;
import static org.assertj.swing.edt.GuiActionRunner.execute;

import java.util.Timer;
import java.util.TimerTask;

import javax.swing.JComboBox;
import javax.swing.JList;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JTextField;
import javax.swing.ListModel;

import org.assertj.swing.annotation.RunsInEDT;
import org.assertj.swing.test.core.RobotBasedTestCase;
import org.assertj.swing.test.swing.TestWindow;
import org.junit.Test;

/**
 * Tests for {@link JComboBoxDropDownListFinder#findDropDownList()}.
 *
 * @author Alex Ruiz
 */
public class JComboBoxDropDownListFinder_findDropDownList_Test extends RobotBasedTestCase {
  private MyWindow window;
  private JComboBoxDropDownListFinder finder;

  @Override
  protected void onSetUp() {
    window = MyWindow.createNew();
    finder = new JComboBoxDropDownListFinder(robot);
    robot.showWindow(window);
  }

  @Test
  public void should_Find_Drop_Down_List() {
    showJComboBoxDropDownList();
    JList list = finder.findDropDownList();
    assertThat(list).isNotNull();
    assertThatListContains(list, "first", "second", "third");
  }

  @Test
  public void should_Try_To_Find_Drop_Down_List_Until_It_Is_Found() {
    showDropDownListWithDelay();
    JList list = finder.findDropDownList();
    assertThat(list).isNotNull();
    assertThatListContains(list, "first", "second", "third");
  }

  private void showDropDownListWithDelay() {
    java.util.Timer timer = new Timer("showJComboBoxDropDownList", false);
    timer.schedule(new TimerTask() {
      @Override
      public void run() {
        showJComboBoxDropDownList();
      }
    }, 18000);
  }

  @RunsInEDT
  private void showJComboBoxDropDownList() {
    execute(() -> window.comboBox.showPopup());
    robot.waitForIdle();
  }

  private void assertThatListContains(final JList list, final String... expectedElements) {
    execute(() -> {
      ListModel model = list.getModel();
      int elementCount = model.getSize();
      assertThat(elementCount).isEqualTo(expectedElements.length);
      for (int i = 0; i < elementCount; i++) {
        assertThat(model.getElementAt(i)).isEqualTo(expectedElements[i]);
      }
    });
  }

  @Test
  public void should_Return_Null_If_Drop_Down_Was_Not_Found() {
    JList list = finder.findDropDownList();
    assertThat(list).isNull();
  }

  @Test
  public void should_Return_Null_If_Active_Drop_Down_Does_Not_Belong_To_JComboBox() {
    robot.rightClick(window.textField);
    JList list = finder.findDropDownList();
    assertThat(list).isNull();
  }

  private static class MyWindow extends TestWindow {
    final JComboBox comboBox = new JComboBox(array("first", "second", "third"));
    final JTextField textField = new JTextField(20);

    @RunsInEDT
    static MyWindow createNew() {
      return execute(() -> new MyWindow());
    }

    private MyWindow() {
      super(JComboBoxDropDownListFinder_findDropDownList_Test.class);
      JPopupMenu popupMenu = new JPopupMenu();
      popupMenu.add(new JMenuItem("One"));
      popupMenu.add(new JMenuItem("Two"));
      textField.setComponentPopupMenu(popupMenu);
      addComponents(comboBox, textField);
    }
  }
}