public Schedule(SyncTaskImpl task, ZPushAccount account, TickHandler scheduleTick, TimeSpan period)
{
this.Task = task;
this.Account = account;
this._tick = scheduleTick;
this._period = period;
}
/// <summary>
/// Adds a synchronisation task.
/// </summary>
/// <param name="owner">The feature owning the task.</param>
/// <param name="name">The task's name, for logging.</param>
/// <param name="action">The action to execute.</param>
public SyncTask AddTask(Feature owner, string name, SyncAction action)
{
if (_started)
{
throw new Exception("Already started, cannot add task");
}
SyncTaskImpl task = new SyncTaskImpl(owner, name, action, null);
_tasks.Add(task);
return(task);
}
/// <summary>
/// Sets a custom schedule for the specified task.
/// </summary>
/// <param name="task">The task</param>
/// <param name="account">The specific account to set the schedule for, or null to set it for all accounts.
/// If a per-account schedule is set, and an all-account schedule, the quickest of both applies.</param>
/// <param name="period">The schedule. Specify null to clear the schedule and resume the original.</param>
/// <returns>The old schedule, or null if there was none.</returns>
public TimeSpan?SetTaskSchedule(SyncTask task, ZPushAccount account, TimeSpan?period, bool executeNow = false)
{
SyncTaskImpl impl = (SyncTaskImpl)task;
Logger.Instance.Trace(this, "Setting task schedule for {0}{1} to {2}",
impl.ToString(),
account == null ? "" : (" for account " + account),
period == null ? "default" : period.Value.ToString());
// Check if there's an existing schedule to modify
Schedule schedule = impl.GetTaskSchedule(account);
TimeSpan?old = schedule?.Period;
if (period == null)
{
// Clearing the schedule
if (schedule != null)
{
// Clear the existing schedule
schedule.Cancel();
impl.SetTaskSchedule(account, null);
}
// If there was no schedule, we're already done
}
else
{
// Setting the schedule
if (schedule == null)
{
// Create a new schedule
schedule = new Schedule(impl, account, ScheduleTick, period.Value);
impl.SetTaskSchedule(account, schedule);
schedule.Start(executeNow);
}
else
{
// Update the existing schedule
schedule.SetPeriod(period.Value, executeNow);
}
}
return(old);
}