/*
 * Copyright (c) 2005-2016 Vincent Vandenschrick. All rights reserved.
 *
 *  This file is part of the Jspresso framework.
 *
 *  Jspresso is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Jspresso is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with Jspresso.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.jspresso.framework.application.frontend.action.swing.file;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Map;

import javax.swing.JFileChooser;

import org.jspresso.framework.action.IActionHandler;
import org.jspresso.framework.application.frontend.file.IFileOpenCallback;
import org.jspresso.framework.util.swing.SwingUtil;

/**
 * Initiates a file open action.
 *
 * @author Vincent Vandenschrick
 */
public class OpenFileAction extends ChooseFileAction {

  private Integer fileMaxSize;

  /**
   * {@inheritDoc}
   */
  @Override
  public boolean execute(IActionHandler actionHandler,
      Map<String, Object> context) {

    JFileChooser currentFileChooser = createFileChooser(context);

    int returnVal = currentFileChooser.showOpenDialog(SwingUtil
        .getVisibleWindow(getSourceComponent(context)));
    IFileOpenCallback openCallback = getFileOpenCallback(context);
    if (returnVal == JFileChooser.APPROVE_OPTION) {
      File file = currentFileChooser.getSelectedFile();
      if (file != null) {
        try {
          openCallback.fileChosen(file.getName(),
              new FileInputStream(file), actionHandler, context);
        } catch (FileNotFoundException ex) {
          openCallback.cancel(actionHandler, context);
        }
      } else {
        openCallback.cancel(actionHandler, context);
      }
    } else {
      openCallback.cancel(actionHandler, context);
    }
    return super.execute(actionHandler, context);
  }

  /**
   * Sets the fileOpenCallback.
   *
   * @param fileOpenCallback
   *          the fileOpenCallback to set.
   */
  public void setFileOpenCallback(IFileOpenCallback fileOpenCallback) {
    super.setFileCallback(fileOpenCallback);
  }

  /**
   * Gets the fileOpenCallback.
   *
   * @param context the action context.
   * @return the fileOpenCallback.
   */
  protected IFileOpenCallback getFileOpenCallback(Map<String, Object> context) {
    return (IFileOpenCallback) super.getFileCallback(context);
  }

  /**
   * Gets the file max size.
   *
   * @param context
   *     the action context
   * @return the max size
   */
  protected Integer getFileMaxSize(Map<String, Object> context) {
    return fileMaxSize;
  }

  /**
   * Sets the file max size.
   *
   * @param fileMaxSize
   *     the max size
   */
  public void setFileMaxSize(Integer fileMaxSize) {
    this.fileMaxSize = fileMaxSize;
  }

}