/// <summary>
/// Internal base constructor for an unbound Trigger.
/// </summary>
internal Trigger()
{
iTaskTrigger = null;
taskTrigger = new TaskTrigger();
taskTrigger.TriggerSize = (ushort)Marshal.SizeOf(taskTrigger);
taskTrigger.BeginYear = (ushort)DateTime.Today.Year;
taskTrigger.BeginMonth = (ushort)DateTime.Today.Month;
taskTrigger.BeginDay = (ushort)DateTime.Today.Day;
}
/// <summary>
/// Internal constructor which initializes itself from
/// from an ITaskTrigger interface.
/// </summary>
/// <param name="iTrigger">Instance of ITaskTrigger from system task scheduler.</param>
internal Trigger(ITaskTrigger iTrigger)
{
if (iTrigger == null)
throw new ArgumentNullException("iTrigger", "ITaskTrigger instance cannot be null");
taskTrigger = new TaskTrigger();
taskTrigger.TriggerSize = (ushort)Marshal.SizeOf(taskTrigger);
iTrigger.GetTrigger(ref taskTrigger);
iTaskTrigger = iTrigger;
}
/// <summary>
/// Creates a new, bound Trigger object from an ITaskTrigger interface. The type of the
/// concrete object created is determined by the type of ITaskTrigger.
/// </summary>
/// <param name="iTaskTrigger">Instance of ITaskTrigger.</param>
/// <returns>One of the concrete classes derived from Trigger.</returns>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="ArgumentException">Unable to recognize trigger type.</exception>
internal static Trigger CreateTrigger(ITaskTrigger iTaskTrigger)
{
if (iTaskTrigger == null)
throw new ArgumentNullException("iTaskTrigger", "Instance of ITaskTrigger cannot be null");
TaskTrigger sTaskTrigger = new TaskTrigger();
sTaskTrigger.TriggerSize = (ushort)Marshal.SizeOf(sTaskTrigger);
iTaskTrigger.GetTrigger(ref sTaskTrigger);
switch ((TriggerType)sTaskTrigger.Type)
{
case TriggerType.RunOnce:
return new RunOnceTrigger(iTaskTrigger);
case TriggerType.RunDaily:
return new DailyTrigger(iTaskTrigger);
case TriggerType.RunWeekly:
return new WeeklyTrigger(iTaskTrigger);
case TriggerType.RunMonthlyDOW:
return new MonthlyDowTrigger(iTaskTrigger);
case TriggerType.RunMonthly:
return new MonthlyTrigger(iTaskTrigger);
case TriggerType.OnIdle:
return new OnIdleTrigger(iTaskTrigger);
case TriggerType.OnSystemStart:
return new OnSystemStartTrigger(iTaskTrigger);
case TriggerType.OnLogon:
return new OnLogonTrigger(iTaskTrigger);
default:
throw new ArgumentException("Unable to recognize type of trigger referenced in iTaskTrigger",
"iTaskTrigger");
}
}