AbstractComboBoxItemIndexValidator.java example

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assertj-swing-master
/**
 * 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.jide.grids.driver;

import static java.lang.String.valueOf;
import static org.assertj.core.util.Strings.concat;

import org.assertj.swing.annotation.RunsInCurrentThread;

import com.jidesoft.combobox.AbstractComboBox;

/**
 * Understands verification that a given number is a valid index of an item in a
 * <code>{@link com.jidesoft.combobox.AbstractComboBox}</code>.
 * <p>
 * <b>Note:</b> Methods in this class are <b>not</b> executed in the event dispatch thread (EDT). Clients are
 * responsible for invoking them in the EDT.
 * </p>
 */
final class AbstractComboBoxItemIndexValidator {

  @RunsInCurrentThread
  static void validateIndex(AbstractComboBox comboBox, int index) {
	int itemCount = comboBox.getModel().getSize();
	if (index >= 0 && index < itemCount) {
	  return;
	}
	throw new IndexOutOfBoundsException(concat("Item index (",
	                                           valueOf(index),
	                                           ") should be between [",
	                                           valueOf(0),
	                                           "] and [",
	                                           valueOf(itemCount - 1),
	                                           "] (inclusive)"));
  }

  private AbstractComboBoxItemIndexValidator() {
  }
}