public TaskResult PerformTask <T>(TaskBase <T> task, T argument, object ownerKey = null)
{
if (!this.Enable || this.IsUndoing)
{
return(TaskResult.NoEnable);
}
ArgumentValidator.AssertNotNull <TaskBase <T> >(task, "task");
if (ownerKey == null)
{
return(this.PerformTask <T>(task, argument));
}
CancellableTaskServiceEventArgs e = new CancellableTaskServiceEventArgs((ITask)task);
this.OnExecuting(e);
if (e.Cancel)
{
return(TaskResult.Cancelled);
}
this.undoableDictionary.Remove(ownerKey);
this.redoableDictionary.Remove(ownerKey);
TaskService.TaskCollection <IInternalTask> taskCollection;
if (!this.repeatableDictionary.TryGetValue(ownerKey, out taskCollection))
{
taskCollection = new TaskService.TaskCollection <IInternalTask>();
this.repeatableDictionary[ownerKey] = taskCollection;
}
taskCollection.AddLast((IInternalTask)task);
TaskResult taskResult = task.PerformTask((object)argument, TaskMode.FirstTime);
this.TrimIfRequired(ownerKey);
this.OnExecuted(new TaskServiceEventArgs((ITask)task));
return(taskResult);
}
private TaskResult PerformTask <T>(TaskBase <T> task, T argument)
{
CancellableTaskServiceEventArgs e = new CancellableTaskServiceEventArgs((ITask)task);
this.OnExecuting(e);
if (e.Cancel)
{
return(TaskResult.Cancelled);
}
this.globallyRedoableTasks.Clear();
this.globallyUndoableTasks.Clear();
this.globallyRepeatableTasks.AddLast((IInternalTask)task);
TaskResult taskResult = task.PerformTask((object)argument, TaskMode.FirstTime);
this.TrimIfRequired((object)null);
this.OnExecuted(new TaskServiceEventArgs((ITask)task));
return(taskResult);
}