/// <summary> Creates a new task. </summary>
public StudyTask(IStudyTasksService client, string name, string userId, TimeSpan estimate)
{
if (client == null)
{
throw new ArgumentNullException(nameof(client));
}
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentException(nameof(name));
}
if (userId == null)
{
throw new ArgumentNullException(nameof(userId));
}
this.MessageObject = new StudyTaskService()
{
Name = name, UserId = userId, Estimate = estimate
};
this.service = client;
this.Name = name;
this.Estimate = estimate;
this.TimeSpans = new ObservableCollection <TaskTimeSpan>();
this.TimeSpans.CollectionChanged += OnTimeSpansChanged;
this.PropertyChanged += OnPropertyChanged;
}
/// <summary> Creates a <see cref="StudyTask"/> instance representing an already existing task in the database. </summary>
public StudyTask(IStudyTasksService service, StudyTaskService task)
{
if (service == null)
{
throw new ArgumentNullException(nameof(service));
}
if (task == null)
{
throw new ArgumentNullException(nameof(task));
}
if (task.Id == 0)
{
throw new ArgumentException();
}
if (task.UserId == null)
{
throw new ArgumentNullException(nameof(task.UserId));
}
this.MessageObject = task;
this.service = service;
this.Name = this.MessageObject.Name;
this.Estimate = this.MessageObject.Estimate;
//retrieve time spans from database:
var timeSpans = service.GetTimeSpansFor(task.Id).Select(timeSpanDB => new TaskTimeSpan(service, timeSpanDB, this));
this.TimeSpans = new ObservableCollection <TaskTimeSpan>(timeSpans);
this.TimeSpans.CollectionChanged += OnTimeSpansChanged;
this.PropertyChanged += OnPropertyChanged;
}
