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Fluent interface for functional GUI testing

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/**
 * 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.util.Lists.newArrayList;
import static org.assertj.swing.exception.ActionFailedException.actionFailure;

import java.util.List;

import javax.annotation.Nonnull;
import javax.swing.InputMap;
import javax.swing.KeyStroke;

import org.assertj.swing.annotation.RunsInCurrentThread;

/**
 * 
 * Utility methods related to {@link KeyStroke}.
 * 
 * 
 * 
 * Note: Methods in this class are accessed in the current executing thread. Such thread may or may not be the
 * event dispatch thread (EDT). Client code must call methods in this class from the EDT.
 * 
 * 
 * @author Alex Ruiz
 */
final class KeyStrokes {
  @RunsInCurrentThread
  static @Nonnull KeyStroke[] findKeyStrokesForAction(@Nonnull String actionName, @Nonnull Object actionKey,
      @Nonnull InputMap inputMap) {
    List keyStrokes = newArrayList();
    for (KeyStroke keyStroke : inputMap.allKeys()) {
      if (actionKey.equals(inputMap.get(keyStroke))) {
        keyStrokes.add(keyStroke);
      }
    }
    if (!keyStrokes.isEmpty()) {
      return keyStrokes.toArray(new KeyStroke[keyStrokes.size()]);
    }
    throw actionFailure(String.format("Unable to find valid input event for action with key '%s'", actionName));
  }

  private KeyStrokes() {
  }
}