content: /*
   * Created on Aug 8, 2008
   * 
   * 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 @2008-2013 the original author or authors.
   */
  package org.fest.swing.driver;
  
  import static org.fest.swing.edt.GuiActionRunner.execute;
  
  import javax.annotation.Nonnull;
  import javax.annotation.Nullable;
  import javax.swing.JFileChooser;
  import javax.swing.plaf.FileChooserUI;
  
  import org.fest.swing.annotation.RunsInEDT;
  import org.fest.swing.edt.GuiQuery;
  import org.fest.util.Strings;
  
  /**
   * Returns the text used in the "approve button" of a {@code JFileChooser}. This action is executed in the event
   * dispatch thread (EDT.)
   * 
   * @see JFileChooser#getApproveButtonText()
   * @see FileChooserUI#getApproveButtonText(JFileChooser)
   * 
   * @author Alex Ruiz
   * @author Yvonne Wang
   */
  final class JFileChooserApproveButtonTextQuery {
    @RunsInEDT
    static @Nullable
    String approveButtonTextFrom(final @Nonnull JFileChooser fileChooser) {
      return execute(new GuiQuery<String>() {
        @Override
        protected @Nullable
        String executeInEDT() {
          String text = fileChooser.getApproveButtonText();
          if (!Strings.isNullOrEmpty(text)) {
            return text;
          }
          return fileChooser.getUI().getApproveButtonText(fileChooser);
        }
      });
    }
  
    private JFileChooserApproveButtonTextQuery() {}
  }