PinUnpinArticleAction.java

// BlogBridge -- RSS feed reader, manager, and web based service
// Copyright (C) 2002-2006 by R. Pito Salas
//
// 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 2 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, write to the Free Software Foundation, Inc., 59 Temple Place,
// Suite 330, Boston, MA 02111-1307 USA
//
// Contact: R. Pito Salas
// mailto:pitosalas@users.sourceforge.net
// More information: about BlogBridge
// http://www.blogbridge.com
// http://sourceforge.net/projects/blogbridge
//
// $Id $
//

package com.salas.bb.core.actions.article;

import com.salas.bb.core.GlobalController;
import com.salas.bb.core.GlobalModel;
import com.salas.bb.domain.IArticle;

import javax.swing.*;
import java.awt.event.ActionEvent;

/**
 * Shows properties dialog for currently selected article.
 */
public final class PinUnpinArticleAction extends AbstractAction
{
    private static PinUnpinArticleAction instance;

    /**
     * Hidden constructor of singleton class.
     */
    private PinUnpinArticleAction()
    {
    }

    /**
     * Returns initialized instance.
     *
     * @return instance of action.
     */
    public static synchronized PinUnpinArticleAction getInstance()
    {
        if (PinUnpinArticleAction.instance == null) PinUnpinArticleAction.instance = new PinUnpinArticleAction();
        return PinUnpinArticleAction.instance;
    }

    /**
     * Performs an action.
     *
     * @param e event object.
     */
    public void actionPerformed(ActionEvent e)
    {
        GlobalModel model = GlobalModel.SINGLETON;

        // Get the lead article
        IArticle lead = model.getSelectedArticle();
        if (lead == null) return;

        // Get the state of the lead, invert it and populate
        boolean newState = !lead.isPinned();

        GlobalController.pinArticles(newState,
            model.getSelectedGuide(),
            model.getSelectedFeed(),
            model.getSelectedArticles());
    }
}