[vidalia-svn] r3166: Add some GliderProcess helper methods for determining if it' (vidalia/trunk/src/vidalia)

[edmanm@xxxxxxxxxxxxxxxxxxx]

Author: edmanm
Date: 2008-09-29 22:19:38 -0400 (Mon, 29 Sep 2008)
New Revision: 3166

Modified:
   vidalia/trunk/src/vidalia/gliderprocess.cpp
   vidalia/trunk/src/vidalia/gliderprocess.h
Log:
Add some GliderProcess helper methods for determining if it's time to check
for updates, and, if not, when we should schedule the next check for updates.


Modified: vidalia/trunk/src/vidalia/gliderprocess.cpp
===================================================================
--- vidalia/trunk/src/vidalia/gliderprocess.cpp	2008-09-30 02:18:54 UTC (rev 3165)
+++ vidalia/trunk/src/vidalia/gliderprocess.cpp	2008-09-30 02:19:38 UTC (rev 3166)
@@ -16,3 +16,24 @@
 {  
 }
 
+int
+GliderProcess::checkForUpdatesInterval()
+{
+  /* XXX: Check once a day. I totally made this up. We want to do something
+   * smarter here. */
+  return 24*60*60;
+}
+
+QDateTime
+GliderProcess::nextCheckForUpdates(const QDateTime &lastCheckedAt)
+{
+  return lastCheckedAt.toUTC().addSecs(checkForUpdatesInterval());
+}
+
+bool
+GliderProcess::shouldCheckForUpdates(const QDateTime &lastCheckedAt)
+{
+  QDateTime nextCheck = nextCheckForUpdates(lastCheckedAt);
+  return (nextCheck >= QDateTime::currentDateTime().toUTC());
+}
+

Modified: vidalia/trunk/src/vidalia/gliderprocess.h
===================================================================
--- vidalia/trunk/src/vidalia/gliderprocess.h	2008-09-30 02:18:54 UTC (rev 3165)
+++ vidalia/trunk/src/vidalia/gliderprocess.h	2008-09-30 02:19:38 UTC (rev 3166)
@@ -12,6 +12,7 @@
 #define _GLIDERPROCESS_H
 
 #include <QProcess>
+#include <QDateTime>
 
 
 class GliderProcess : public QProcess
@@ -19,7 +20,24 @@
   Q_OBJECT
 
 public:
+  /** Default constructor.
+   */
   GliderProcess(QObject *parent = 0);
+
+  /** Return the time at which we should next check for available updates, 
+   * given the last we checked was at <b>lastCheckedAt</b>.
+   */
+  static QDateTime nextCheckForUpdates(const QDateTime &lastCheckedAt);
+
+  /** Return true if we should check for available software udpates, given
+   * the last time we checked was at <b>lastCheckedAt</b>. The returned
+   * QDateTime will be in UTC.
+   */
+  static bool shouldCheckForUpdates(const QDateTime &lastCheckedAt);
+
+  /** Returns the preferred interval (in seconds) between executions of the
+   * Glider process to check for available software updates. */
+  static int checkForUpdatesInterval();
 };
 
 #endif