protected virtual DisplayTaskBag GetTaskBag(NotificationDisplayTask task)
{
PositionSize positionSize = this.GetDefaultNotificationPositionSize();
NotificationWindowVM notificationWindowVM = this.GetNotificationWindowVM(task, positionSize);
return(new DisplayTaskBag(task, notificationWindowVM, DateTime.UtcNow, positionSize));
}
public DisplayTaskBag(
[NotNull] NotificationDisplayTask task,
[NotNull] NotificationWindowVM windowVM,
DateTime enqueueTime,
PositionSize positionSize)
{
Assert.ArgumentNotNull(task, "task");
Assert.ArgumentNotNull(windowVM, "windowVM");
this.Task = task;
this.WindowVM = windowVM;
this.EnqueueTime = enqueueTime;
this.PositionSize = positionSize;
}
public virtual bool EnqueueToDisplay(NotificationDisplayTask task)
{
var taskBag = this.GetTaskBag(task);
task.TaskDiscardHandler = this.DiscardTask;
lock (this.Lock)
{
this.AddBagToQueue(taskBag);
Monitor.Pulse(this.Lock);
this.ProcessPendingQueue();
}
return(true);
}
protected virtual bool DiscardTask(NotificationDisplayTask task, bool onlyIfNonDisplayed)
{
DisplayTaskBag bagToRemove = null;
try
{
lock (this.Lock)
{
bagToRemove = this.QueuedTasks.FirstOrDefault(displayTaskBag => displayTaskBag.Task == task);
if (bagToRemove != null)
{
this.QueuedTasks.Remove(bagToRemove);
return(true);
}
//Don't try to remove from main collection if flag is true
if (onlyIfNonDisplayed)
{
return(false);
}
bagToRemove = this.DisplayedWaitForResultTasks.FirstOrDefault(displayTaskBag => displayTaskBag.Task == task);
if (bagToRemove == null)
{
return(false);
}
this.DisplayedWaitForResultTasks.Remove(bagToRemove);
return(true);
}
}
finally
{
if (bagToRemove != null)
{
bagToRemove.WindowVM.IsAlive = false;
bagToRemove.Task.State = NotificationState.Aborted;
}
}
}
protected virtual DisplayTaskBag GetTaskBag(NotificationDisplayTask task)
{
PositionSize positionSize = this.GetDefaultNotificationPositionSize();
NotificationWindowVM notificationWindowVM = this.GetNotificationWindowVM(task, positionSize);
return new DisplayTaskBag(task, notificationWindowVM, DateTime.UtcNow, positionSize);
}
protected virtual NotificationWindowVM GetNotificationWindowVM(NotificationDisplayTask task, PositionSize actualPositionAndSize)
{
return new NotificationWindowVM(actualPositionAndSize, task.RelatedSpecializedNotification, task.Originator);
}
protected virtual bool DiscardTask(NotificationDisplayTask task, bool onlyIfNonDisplayed)
{
DisplayTaskBag bagToRemove = null;
try
{
lock (this.Lock)
{
bagToRemove = this.QueuedTasks.FirstOrDefault(displayTaskBag => displayTaskBag.Task == task);
if (bagToRemove != null)
{
this.QueuedTasks.Remove(bagToRemove);
return true;
}
//Don't try to remove from main collection if flag is true
if (onlyIfNonDisplayed)
{
return false;
}
bagToRemove = this.DisplayedWaitForResultTasks.FirstOrDefault(displayTaskBag => displayTaskBag.Task == task);
if (bagToRemove == null)
{
return false;
}
this.DisplayedWaitForResultTasks.Remove(bagToRemove);
return true;
}
}
finally
{
if (bagToRemove != null)
{
bagToRemove.WindowVM.IsAlive = false;
bagToRemove.Task.State = NotificationState.Aborted;
}
}
}
public virtual bool EnqueueToDisplay(NotificationDisplayTask task)
{
var taskBag = this.GetTaskBag(task);
task.TaskDiscardHandler = this.DiscardTask;
lock (this.Lock)
{
this.AddBagToQueue(taskBag);
Monitor.Pulse(this.Lock);
this.ProcessPendingQueue();
}
return true;
}
protected virtual NotificationWindowVM GetNotificationWindowVM(NotificationDisplayTask task, PositionSize actualPositionAndSize)
{
return(new NotificationWindowVM(actualPositionAndSize, task.RelatedSpecializedNotification, task.Originator));
}
