at.nullpointer.trayrss.gui.TrayRSSSplashScreen.java Source code

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Here is the source code for at.nullpointer.trayrss.gui.TrayRSSSplashScreen.java

Source

/*
 * TrayRSS - simply notification of feed information (c) 2009-2013 TrayRSS Developement Team visit the project at
 * http://trayrss.nullpointer.at/
 * 
 * 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 at.nullpointer.trayrss.gui;

import java.awt.SplashScreen;

import org.apache.log4j.Logger;
import org.springframework.stereotype.Component;

/**
 * Offers the management of the SplashScreen
 * 
 * @author thefake
 * 
 */
@Component
public class TrayRSSSplashScreen {

    /**
     * Logger
     */
    private static final Logger LOG = Logger.getLogger(TrayRSSSplashScreen.class);

    private SplashScreen splash;
    private long start;
    private long end;

    /**
     * Creates a TrayRSSSplashScreen Object and retrieves a reference to the actual SplashScreen given with the java vm
     * parameter -splash. Also the splash screen timer is initiated.
     */
    public TrayRSSSplashScreen() {

        super();

        try {
            this.splash = SplashScreen.getSplashScreen();
        } catch (NullPointerException e) {
            LOG.warn("No splash screen found!");
            LOG.debug("at TrayRSSSplashScreen#TrayRSSSplashScreen()");
        }

        this.start = System.currentTimeMillis();
    }

    /**
     * Closes the SplashScreen after it has been displayed about x seconds
     * 
     * @param seconds Time the SplashScreen has to be displayed
     */
    public void endSplashAfterDisplaytime(int seconds) {

        endTimer();
        long diff = end - start;
        long time = (seconds * 1000) - (end - start);
        try {
            show(time > 0 ? time : 0);
            close();
            LOG.debug("Startup time: " + diff + " Milliseconds");
            LOG.debug("Splash shown for " + seconds + " Seconds");
        } catch (NullPointerException e) {
            LOG.warn("No splash screen found!");
            LOG.debug("at TrayRSSSplashScreen#endSplashAfterDisplaytime");
        }
    }

    private void endTimer() {

        this.end = System.currentTimeMillis();
    }

    private void show(long milliseconds) throws NullPointerException {

        if (splash.isVisible()) {
            try {
                Thread.sleep(milliseconds);
            } catch (InterruptedException e) {
                LOG.debug("Splash screen not paused!");
            }
        }
    }

    private void close() throws NullPointerException {

        if (splash.isVisible())
            splash.close();
        else
            LOG.debug("No splash screen found to close!");
    }

}