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 javax.swing.JFileChooser.DIRECTORIES_ONLY;
  import static javax.swing.JFileChooser.FILES_ONLY;
  import static org.fest.swing.driver.ComponentPreconditions.checkEnabledAndShowing;
  import static org.fest.swing.edt.GuiActionRunner.execute;
  import static org.fest.swing.format.Formatting.format;
  import static org.fest.util.Strings.concat;
  import static org.fest.util.ToString.toStringOf;
  
  import java.io.File;
  
  import javax.annotation.Nonnull;
  import javax.swing.JFileChooser;
  
  import org.fest.swing.annotation.RunsInCurrentThread;
  import org.fest.swing.annotation.RunsInEDT;
  import org.fest.swing.edt.GuiTask;
  
  /**
   * Selects a file in a {@code JFileChooser}. This task is executed in the event dispatch thread (EDT.)
   * 
   * @author Alex Ruiz
   */
  final class JFileChooserSelectFileTask {
    @RunsInEDT
    static void setSelectedFile(final @Nonnull JFileChooser fileChooser, final @Nonnull File file) {
      execute(new GuiTask() {
        @Override
        protected void executeInEDT() {
          checkEnabledAndShowing(fileChooser);
          checkSelectionMode(fileChooser, file);
          fileChooser.setSelectedFile(file);
        }
      });
    }
  
    @RunsInEDT
    static void setSelectedFiles(final @Nonnull JFileChooser fileChooser, final @Nonnull File[] files) {
      execute(new GuiTask() {
        @Override
        protected void executeInEDT() {
          checkEnabledAndShowing(fileChooser);
          if (files.length > 1 && !fileChooser.isMultiSelectionEnabled()) {
            throw new IllegalStateException(concat("Expecting file chooser ", format(fileChooser),
                " to handle multiple selection"));
          }
          for (File file : files) {
            checkSelectionMode(fileChooser, file);
          }
          fileChooser.setSelectedFiles(files);
        }
      });
    }
  
    @RunsInCurrentThread
    private static void checkSelectionMode(JFileChooser fileChooser, File file) {
      int mode = fileChooser.getFileSelectionMode();
      if (mode == FILES_ONLY && !file.isFile()) {
        throw cannotSelectFile(file, "the file chooser can only open files");
      }
      if (mode == DIRECTORIES_ONLY && !file.isDirectory()) {
        throw cannotSelectFile(file, "the file chooser can only open directories");
      }
    }
  
    private static IllegalArgumentException cannotSelectFile(File file, String reason) {
      String msg = String.format("Unabled to select file %s: %s", toStringOf(file), reason);
      return new IllegalArgumentException(msg);
    }
  
    private JFileChooserSelectFileTask() {}
  }