verdandi.ui.action.ImportPluginAction.java Source code

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Here is the source code for verdandi.ui.action.ImportPluginAction.java

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/*******************************************************************************
 * Copyright 2010 Olaf Sebelin
 * 
 * This file is part of Verdandi.
 * 
 * Verdandi 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.
 * 
 * Verdandi 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 Verdandi.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package verdandi.ui.action;

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.prefs.BackingStoreException;
import java.util.prefs.Preferences;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.filechooser.FileFilter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import verdandi.model.VerdandiModel;

public class ImportPluginAction extends VerdandiAction {

    private static final Log LOG = LogFactory.getLog(ImportPluginAction.class);

    private static final String KEY_CWD = "cwd";

    private Component parent;

    public ImportPluginAction(Component parent) {
        super("pluginimportaction.name");
        this.parent = parent;
    }

    private static final long serialVersionUID = 1L;

    /**
     * Ask the import file from the user
     */
    private File getFile() {
        File res = null;
        Preferences prefs = Preferences.userNodeForPackage(getClass());
        File importDir = new File(prefs.get(KEY_CWD, System.getProperty("user.home")));

        JFileChooser chooser = new JFileChooser(importDir);
        chooser.setFileFilter(new FileFilter() {

            @Override
            public boolean accept(File f) {
                return f.getName().toLowerCase().endsWith(".jar") || f.isDirectory();
            }

            @Override
            public String getDescription() {
                return RC.getString("pluginimportaction.filechooser.jarfilter.description");
            }
        });

        chooser.setDialogTitle(RC.getString("pluginimportaction.filechooser.title"));
        chooser.setMultiSelectionEnabled(false);

        if (chooser.showOpenDialog(parent) != JFileChooser.APPROVE_OPTION) {
            LOG.debug("User cancelled");
            return null;
        }
        res = chooser.getSelectedFile();

        prefs.put("import.dir", res.getParent());
        try {
            prefs.flush();
        } catch (BackingStoreException e) {
            LOG.error("Cannot write export file preference", e);
        }

        return res;
    }

    @Override
    public void actionPerformed(ActionEvent evt) {
        File fileToLoad = getFile();

        if (fileToLoad == null) {
            return;
        }

        File destFile = new File(VerdandiModel.getConf().getPluginDir(), fileToLoad.getName());
        // FIXME: overwrite won't work under windows!
        FileInputStream fIn = null;
        FileOutputStream fOut = null;
        try {
            fIn = new FileInputStream(fileToLoad);
            fOut = new FileOutputStream(destFile);
            byte buf[] = new byte[4096];
            for (int read = fIn.read(buf); read != -1; read = fIn.read(buf)) {
                fOut.write(buf, 0, read);
            }
        } catch (IOException e) {
            // VerdandiException ve = new VerdandiException()
            // model.fireEvent(new ErrorEvent())
            LOG.error("", e);
        } finally {
            if (fIn != null) {
                try {
                    fIn.close();
                } catch (Throwable t) {
                    LOG.error("Cannot close stream: ", t);
                }
            }
            if (fOut != null) {
                try {
                    fOut.close();
                } catch (Throwable t) {
                    LOG.error("Cannot close stream: ", t);
                }
            }
        }

        JOptionPane.showMessageDialog(parent, RC.getString("pluginimportaction.info.message"),
                RC.getString("pluginimportaction.info.title"), JOptionPane.INFORMATION_MESSAGE);

    }

}