public CreateNewLessonsViewModel(User currentUser)
{
CurrentUser = currentUser;
RevertToPreviousViewModelCmd = new RelayCommand((p) => ViewModelManager.Instance.ReturnToPreviousModel());
AddNewLessonCmd = new RelayCommand((p) => StartAddingNewLesson(), (p) => CanStartAddingNewLesson());
ShowLessonCmd = new RelayCommand((p) => ShowLesson(), (p) => CurrentLesson != null);
SaveLessonCmd = new RelayCommand((p) => SaveLesson(), (p) => CanSaveLesson());
DeleteSelectedWordCmd = new RelayCommand((p) => CurrentLessonWords.Remove(CurrentEditingWord),
(p) => CurrentEditingWord != null && CurrentLessonWords.Count() > 1);
AddNewWordToLessonCmd = new RelayCommand((p) => AddNewWordToLesson(), (p) => CanAddNewWordToLesson());
DeleteSelectedLessonCmd = new RelayCommand((p) => DeleteSelectedLesson(p), (p) => CanDeleteSelectedLesson(p));
using (var db = Database.Instance.GetConnection())
{
Lessons = new ObservableCollection <Lesson>();
foreach (var lesson in db.Table <Lesson>().Where(lesson => lesson.UserId == currentUser.Id))
{
Lessons.Add(lesson);
}
}
_langNameValidationService = new ValidateLanguageDefinitionService();
_newLessonValidationService = (p) =>
{
var ret = new List <string>();
int count;
using (var db = Database.Instance.GetConnection())
{
count = db.Table <Lesson>().Where(l => l.UserId == currentUser.Id && l.Name.Equals(p)).Count();
}
if (count >= 1 || (CurrentLesson != null && CurrentLesson.Name.Equals(p as string)))
{
ret.Add("Lesson name has to be unique");
}
else if ((p as string).Length < Constants.MinLessonNameLength ||
(p as string).Length > Constants.MaxLessonNameLength)
{
ret.Add(String.Format("Length has to be between {0} and {1}", Constants.MinLessonNameLength, Constants.MaxLessonNameLength));
}
return(ret);
};
ShowModifyLessonSubView = false;
CurrentLessonWords = new ObservableCollection <Word>();
CurrentEditingWord = new Word()
{
};
CurrentLessonWords.CollectionChanged += CurrentLessonWords_CollectionChanged;
CurrentLessonWordsChanged = false;
}
public Lesson()
{
_langNameValidatorService = new ValidateLanguageDefinitionService();
}
