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package com.btr.proxy.search.desktop;
import java.net.ProxySelector;
import com.btr.proxy.search.ProxySearchStrategy;
import com.btr.proxy.search.desktop.gnome.GnomeProxySearchStrategy;
import com.btr.proxy.search.desktop.kde.KdeProxySearchStrategy;
import com.btr.proxy.search.desktop.osx.OsxProxySearchStrategy;
import com.btr.proxy.search.desktop.win.WinProxySearchStrategy;
import com.btr.proxy.util.Logger;
import com.btr.proxy.util.Logger.LogLevel;
import com.btr.proxy.util.PlatformUtil;
import com.btr.proxy.util.PlatformUtil.Desktop;
import com.btr.proxy.util.PlatformUtil.Platform;
import com.btr.proxy.util.ProxyException;
/*****************************************************************************
* This search provider will try to find out on which desktop platform we
* are running and then will initialize the default proxy search.
*
* @author Bernd Rosstauscher (proxyvole@rosstauscher.de) Copyright 2009
****************************************************************************/
public class DesktopProxySearchStrategy implements ProxySearchStrategy {
private static final Object lock = new Object();
private static ProxySelector selector = null;
private static long last = 0;
/*************************************************************************
* Gets the default ProxySelector for the current platform.
* @return a ProxySelector, null if none is found.
* @throws ProxyException on error.
************************************************************************/
public ProxySelector getProxySelector() throws ProxyException {
long now = System.currentTimeMillis();
synchronized (lock) {
if (last + 5000 < now)
return selector;
last = now;
ProxySearchStrategy strategy = findDesktopSpecificStrategy();
if (strategy == null)
return null;
selector = strategy.getProxySelector();
return selector;
}
}
/*************************************************************************
* Determine the desktop and create a strategy for it.
* @return a desktop specific strategy, null if none was found.
************************************************************************/
private ProxySearchStrategy findDesktopSpecificStrategy() {
Platform pf = PlatformUtil.getCurrentPlattform();
Desktop dt = PlatformUtil.getCurrentDesktop();
Logger.log(getClass(), LogLevel.TRACE, "Detecting system settings.");
ProxySearchStrategy strategy = null;
if (pf == Platform.WIN) {
Logger.log(getClass(), LogLevel.TRACE, "We are running on Windows.");
strategy = new WinProxySearchStrategy();
} else
if (dt == Desktop.KDE) {
Logger.log(getClass(), LogLevel.TRACE, "We are running on KDE.");
strategy = new KdeProxySearchStrategy();
} else
if (dt == Desktop.GNOME) {
Logger.log(getClass(), LogLevel.TRACE, "We are running on Gnome.");
strategy = new GnomeProxySearchStrategy();
} else
if (dt == Desktop.MAC_OS) {
Logger.log(getClass(), LogLevel.TRACE, "We are running on Mac OSX.");
strategy = new OsxProxySearchStrategy();
}
return strategy;
}
}
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