/// <summary>
/// Starts the given Task when the tasks ended successfully.
/// </summary>
/// <param name="followingTask">The task to start.</param>
/// <param name="target">The DispatcherBase to start the following task on.</param>
/// <returns>The tasks.</returns>
public static IEnumerable <Task> Then(this IEnumerable <Task> that, Task followingTask, DispatcherBase target)
{
var remaining = that.Count();
var syncRoot = new object();
foreach (var task in that)
{
task.WhenFailed(() =>
{
if (followingTask.ShouldAbort)
{
return;
}
followingTask.Abort();
});
task.WhenSucceeded(() =>
{
if (followingTask.ShouldAbort)
{
return;
}
lock (syncRoot)
{
remaining--;
if (remaining == 0)
{
if (target != null)
{
followingTask.Run(target);
}
else if (ThreadBase.CurrentThread is TaskWorker)
{
followingTask.Run(((TaskWorker)ThreadBase.CurrentThread).TaskDistributor);
}
else
{
followingTask.Run();
}
}
}
});
}
return(that);
}
/// <summary>
/// Starts the given Task when this Task ended successfully.
/// </summary>
/// <param name="followingTask">The task to start.</param>
/// <param name="target">The DispatcherBase to start the following task on.</param>
/// <returns>This task.</returns>
public static Task Then(this Task that, Task followingTask, DispatcherBase target)
{
that.WhenFailed(() =>
{
followingTask.Abort();
});
that.WhenSucceeded(() =>
{
if (target != null)
{
followingTask.Run(target);
}
else if (ThreadBase.CurrentThread is TaskWorker)
{
followingTask.Run(((TaskWorker)ThreadBase.CurrentThread).TaskDistributor);
}
else
{
followingTask.Run();
}
});
return(that);
}