OpenAction.java :  » ERP-CRM-Financial » csheets » csheets » ui » ctrl » Java Open Source

/*
 * Copyright (c) 2005 Einar Pehrson <einar@pehrson.nu>.
 *
 * This file is part of
 * CleanSheets - a spreadsheet application for the Java platform.
 *
 * CleanSheets is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * CleanSheets 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with CleanSheets; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package csheets.ui.ctrl;

import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.InvalidClassException;
import java.io.OptionalDataException;
import java.io.StreamCorruptedException;

import javax.swing.ImageIcon;
import javax.swing.KeyStroke;

import csheets.CleanSheets;
import csheets.core.Workbook;
import csheets.ui.FileChooser;

/**
 * An action for opening a spreadsheet.
 * @author Einar Pehrson
 */
@SuppressWarnings("serial")
public class OpenAction extends BaseAction {

  /** The CleanSheets application */
  protected CleanSheets app;

  /** The user interface controller */
  protected UIController uiController;

  /** The file chooser to use when prompting the user for the file to open */
  private FileChooser chooser;

  /**
   * Creates a new open action.
   * @param app the CleanSheets application
   * @param uiController the user interface controller
   * @param chooser the file chooser to use when prompting the user for the file to open
   */
  public OpenAction(CleanSheets app, UIController uiController, FileChooser chooser) {
    // Stores members
    this.app = app;
    this.uiController = uiController;
    this.chooser = chooser;
    setEnabled(chooser != null);
  }

  protected String getName() {
    return "Open...";
  }

  protected void defineProperties() {
    putValue(MNEMONIC_KEY, KeyEvent.VK_O);
    putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_O, ActionEvent.CTRL_MASK));
    putValue(SMALL_ICON, new ImageIcon(CleanSheets.class.getResource("res/img/open.gif")));
  }

  public void actionPerformed(ActionEvent event) {
    File file = getFile();
    if (file != null) {
      Workbook workbook = app.getWorkbook(file);
      if (workbook == null)
        try {
          // Opens the file
          app.load(file);
        } catch (FileNotFoundException fe) {
          showErrorDialog("The file you requested was not found.");
        } catch (ClassNotFoundException e) {
          showErrorDialog("The class of a serialized object cannot be found:\n" + e.getMessage() + ".");
        } catch (InvalidClassException e) {
          showErrorDialog("Something is wrong with a class used by serialization.");
        } catch (StreamCorruptedException e) {
          showErrorDialog("Control information in the input stream is inconsistent.");
        } catch (OptionalDataException e) {
          showErrorDialog("Primitive data was found in the input stream instead of objects.");
        } catch (Exception e) {
          showErrorDialog("An I/O error occurred when loading the file.");
        }
      else
        uiController.setActiveWorkbook(workbook);
    }
  }

  /**
   * Returns the file to open.
   * @return file the file to open
   */
  public File getFile() {
    return chooser.getFileToOpen();
  }
}