org.datavyu.controllers.AutosaveC.java Source code

Introduction

Here is the source code for org.datavyu.controllers.AutosaveC.java

Source

/**
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.datavyu.controllers;

import com.usermetrix.jclient.Logger;
import com.usermetrix.jclient.UserMetrix;

import java.io.IOException;
import javax.swing.Timer;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import org.apache.commons.io.FilenameUtils;
import org.datavyu.Datavyu;
import org.datavyu.controllers.project.ProjectController;
import org.datavyu.models.db.UserWarningException;
import org.datavyu.util.FileFilters.OPFFilter;
import org.datavyu.util.FileFilters.SHAPAFilter;

public class AutosaveC implements ActionListener {

    /** The logger for this class. */
    private static Logger LOGGER = UserMetrix.getLogger(DeleteColumnC.class);

    private static Timer timer;
    private static File f;

    public static void setInterval(int interval) {
        if (interval == 0) {
            if (timer != null) {
                timer.stop();
                timer = null;
            }
            return;
        }
        interval *= 60000;
        if (timer == null) {
            timer = new Timer(interval, new AutosaveC());
            timer.start();
        } else {
            timer.setDelay(interval);
        }
    }

    public static void stop() {
        if (timer != null) {
            timer.stop();
        }
    }

    @Override
    public void actionPerformed(ActionEvent evt) {
        String baseName;
        String ext;
        // save the project
        try {
            if (f != null) {
                f.delete();
            }
            ProjectController projController = Datavyu.getProjectController();
            SaveC saveController = new SaveC();
            if (projController.isNewProject() || (projController.getProjectName() == null)) {
                baseName = "~noname_";
                ext = ".opf";
                f = File.createTempFile(baseName, ext);
                saveController.saveProject(f, projController.getProject(), projController.getDB(), false);
            } else {
                if ((projController.getLastSaveOption() instanceof SHAPAFilter)
                        || (projController.getLastSaveOption() instanceof OPFFilter)) {
                    baseName = "~" + projController.getProjectName() + "_";
                    ext = ".opf";
                    f = File.createTempFile(baseName, ext);
                    saveController.saveProject(f, projController.getProject(), projController.getDB(), false);
                    // Save content just as a database.                          
                } else {
                    String filename = "~" + projController.getDatabaseFileName();
                    baseName = FilenameUtils.getBaseName(filename) + "_";
                    ext = "." + FilenameUtils.getExtension(filename);
                    f = File.createTempFile(baseName, ext);
                    saveController.saveDatabase(f, projController.getDB(), false);
                }
            }
        } catch (UserWarningException lee) {
            LOGGER.error("UserWarningException: Unable to autosave.", lee);
        } catch (IOException ioe) {
            LOGGER.error("IOException: Unable to autosave.", ioe);
        } finally {
            f.deleteOnExit();
        }
    }

    private AutosaveC() {
    }
}