private IEnumerable <Task> InitTaskInstance(IEnumerable <TaskItem <bool> > aTasks)
{
var progressingTasks = aTasks.Select(async t =>
{
if (t.TaskInstance == null)
{
t.TaskInstance = TaskExcuteHandler.Invoke(t, t.TaskCancellationTokenSource.Token);
}
await t.TaskInstance.ConfigureAwait(false);
});
return(progressingTasks);
}
private async void TraversalTaskListNew(ObservableCollection <TaskItem <bool> > aTaskCollection)
{
isRun = true;
await Task.Run(async() =>
{
NullTaskNoteVisibility = Visibility.Collapsed;
TaskCollection = new ObservableCollection <TaskItem <bool> >(aTaskCollection.Where(x => x.TaskStatus != TaskStatusEnum.Completed));
if (TaskCollection.FirstOrDefault(x => x.TaskStatus == TaskStatusEnum.InProgress) != null)
{
await Task.Delay(100);
TraversalTaskListNew(TaskCollection);
}
else
{
var task = TaskCollection.FirstOrDefault(t => t.TaskStatus == TaskStatusEnum.Ready || t.TaskStatus == TaskStatusEnum.Hangup);
if (task != null)
{
if (task.TaskStatus == TaskStatusEnum.Hangup)
{
task.TaskCancellationTokenSource = new CancellationTokenSource();
}
task.TaskInstance = TaskExcuteHandler.Invoke(task, task.TaskCancellationTokenSource.Token);
await Task.Delay(100);
await task.TaskInstance.ContinueWith(_ => TraversalTaskListNew(TaskCollection));
}
else
{
isRun = false;
if (TaskCollection.Count() == 0)
{
NullTaskNoteVisibility = Visibility.Visible;
return;
}
}
}
});
}
