private TimerExtension GetTimerExtension(ActivityContext context)
{
TimerExtension timerExtension = context.GetExtension <TimerExtension>();
Fx.Assert(timerExtension != null, "TimerExtension must exist.");
return(timerExtension);
}
protected override void Cancel(NativeActivityContext context)
{
Bookmark timerBookmark = this.timerBookmark.Get(context);
TimerExtension timerExtension = GetTimerExtension(context);
timerExtension.CancelTimer(timerBookmark);
context.RemoveBookmark(timerBookmark);
context.MarkCanceled();
}
private TimerExtension GetTimerExtension()
{
TimerExtension service = this.executor.GetService(typeof(TimerExtension)) as TimerExtension;
if (service == null)
{
throw new InvalidOperationException(ExecutionStringManager.InteropCantFindTimerExtension);
}
return(service);
}
protected override void Abort(NativeActivityAbortContext context)
{
Bookmark timerBookmark = this.timerBookmark.Get(context);
// The bookmark could be null in abort when user passed in a negative delay as a duration
if (timerBookmark != null)
{
TimerExtension timerExtension = GetTimerExtension(context);
timerExtension.CancelTimer(timerBookmark);
}
base.Abort(context);
}
protected override void Execute(NativeActivityContext context)
{
TimeSpan actualValue = this.Duration.Get(context);
if (actualValue < TimeSpan.Zero)
{
throw FxTrace.Exception.ArgumentOutOfRange("Duration", actualValue, System.Activities.SR.DurationIsNegative(base.DisplayName));
}
if (actualValue != TimeSpan.Zero)
{
TimerExtension timerExtension = this.GetTimerExtension(context);
Bookmark bookmark = context.CreateBookmark();
timerExtension.RegisterTimer(actualValue, bookmark);
this.timerBookmark.Set(context, bookmark);
}
}
protected override void Execute(NativeActivityContext context)
{
TimeSpan duration = this.Duration.Get(context);
if (duration < TimeSpan.Zero)
{
throw FxTrace.Exception.ArgumentOutOfRange("Duration", duration, SR.DurationIsNegative(this.DisplayName));
}
if (duration == TimeSpan.Zero)
{
return;
}
TimerExtension timerExtension = GetTimerExtension(context);
Bookmark bookmark = context.CreateBookmark();
timerExtension.RegisterTimer(duration, bookmark);
this.timerBookmark.Set(context, bookmark);
}
