/// <summary>
/// Builds a ViewModel aimed at editing an existing SrsEntry,
/// or adding a pre-composed SrsEntry.
/// </summary>
/// <param name="entity">Entity to edit.</param>
public SrsEntryViewModel(SrsEntry entity)
{
// Initialize fields.
_entry = new ExtendedSrsEntry(entity);
_originalNextReviewDate = entity.NextAnswerDate;
_originalLevelValue = entity.CurrentGrade;
_associatedKanjiString = Entry.AssociatedKanji;
_associatedVocabString = Entry.AssociatedVocab;
_srsEntryDao = new SrsEntryDao();
_kanjiDao = new KanjiDao();
_vocabDao = new VocabDao();
if (IsNew)
{
Entry.Tags = Properties.Settings.Default.LastSrsTagsValue;
}
// Create the relay commands.
SubmitCommand = new RelayCommand(OnSubmit);
CancelCommand = new RelayCommand(OnCancel);
SrsProgressResetCommand = new RelayCommand(OnSrsProgressReset);
ApplyAssociatedKanjiCommand = new RelayCommand(OnApplyAssociatedKanji);
ApplyAssociatedVocabCommand = new RelayCommand(OnApplyAssociatedVocab);
ToggleSuspendCommand = new RelayCommand(OnToggleSuspend);
DeleteCommand = new RelayCommand(OnDelete);
ToggleDateEditCommand = new RelayCommand(OnToggleDateEdit);
DateToNowCommand = new RelayCommand(OnDateToNow);
DateToNeverCommand = new RelayCommand(OnDateToNever);
// Get the associated kanji or vocab.
GetAssociatedKanji();
GetAssociatedVocab();
// Initialize the VM.
_isFirstSrsLevelSelect = true;
SrsLevelPickerVm = new SrsLevelPickerViewModel();
SrsLevelPickerVm.SrsLevelSelected += OnSrsLevelSelected;
SrsLevelPickerVm.Initialize(_entry.CurrentGrade);
}
/// <summary>
/// Called when the AddToSrsCommand is fired.
/// Opens the SRS entry window.
/// </summary>
private void OnAddToSrs()
{
// Prepare the new entry.
SrsEntry entry = new SrsEntry();
entry.LoadFromKanji(_kanjiEntity.DbKanji);
// Show the modal entry edition window.
EditSrsEntryWindow wnd = new EditSrsEntryWindow(entry);
wnd.ShowDialog();
// When it is closed, get the result.
ExtendedSrsEntry result = wnd.Result;
if (wnd.IsSaved && result != null &&
result.AssociatedKanji == _kanjiEntity.DbKanji.Character)
{
// The result exists and is still associated with this kanji.
// We can use it in this ViewModel.
SrsEntry = result;
}
}
/// <summary>
/// Builds a kanji details ViewModel handling the given kanji.
/// </summary>
/// <param name="kanjiEntity">Kanji to handle.</param>
public KanjiDetailsViewModel(ExtendedKanji kanjiEntity)
{
KanjiEntity = kanjiEntity;
if (KanjiEntity.DbKanji.SrsEntries.Any())
{
SrsEntry = new ExtendedSrsEntry(
KanjiEntity.DbKanji.SrsEntries.First());
}
VocabFilter filter = new VocabFilter()
{
Kanji = new KanjiEntity[] { _kanjiEntity.DbKanji }
};
CategoryFilterVm = new CategoryFilterViewModel();
CategoryFilterVm.PropertyChanged += OnCategoryChanged;
VocabListVm = new VocabListViewModel(filter);
VocabListVm.KanjiNavigated += OnKanjiNavigated;
VocabFilterVm = new VocabFilterViewModel(filter);
VocabFilterVm.FilterChanged += OnVocabFilterChanged;
VocabFilterVm.PropertyChanged += OnVocabPropertyChanged;
ToggleDetailsCommand = new RelayCommand(OnToggleDetails);
AddToSrsCommand = new RelayCommand(OnAddToSrs);
EditSrsEntryCommand = new RelayCommand(OnEditSrsEntry);
FilterReadingCommand = new RelayCommand <string>(OnFilterReading);
NextStrokeCommand = new RelayCommand(OnNextStroke);
PreviousStrokeCommand = new RelayCommand(OnPreviousStroke);
LastStrokeCommand = new RelayCommand(OnLastStroke);
FirstStrokeCommand = new RelayCommand(OnFirstStroke);
WaniKaniCommand = new RelayCommand(OnWaniKani);
PrepareSvg();
}
/// <summary>
/// Command callback.
/// Calls for the SRS item edition window to edit the SRS item
/// referred by the current question.
/// </summary>
private void OnEditSrsEntry()
{
if (CurrentQuestion != null)
{
// Show the modal entry edition window.
EditSrsEntryWindow wnd = new EditSrsEntryWindow(CurrentQuestionGroup.Reference.Clone());
wnd.ShowDialog();
// When it is closed, get the result.
ExtendedSrsEntry result = wnd.Result;
if (wnd.IsSaved)
{
if (result != null &&
result.NextAnswerDate.HasValue &&
result.NextAnswerDate.Value.ToLocalTime() <= DateTime.Now &&
!result.SuspensionDate.HasValue)
{
// The result exists and is still due for review.
// Update the current group.
CurrentQuestionGroup.Reference = result.Reference;
RaisePropertyChanged("CurrentQuestion");
}
else
{
// The result has been deleted or is no longer due
// for review. Remove the question group from the batch.
ReviewState = SrsReviewStateEnum.Ignore;
_currentBatch.Remove(CurrentQuestionGroup);
FillCurrentBatch();
AnsweredReviewsCount++;
ToNextQuestion();
}
}
}
}
/// <summary>
/// Background task work method.
/// Sends the entity to the database.
/// </summary>
private void DoSendEntity(object sender, DoWorkEventArgs e)
{
SrsEntryOperationEnum operationType = (SrsEntryOperationEnum)e.Argument;
// Acquire the send object. Thus, only one send operation can occur
// at any given time.
lock (_sendLock)
{
// Once the lock is acquired, check that the work is not done.
// You wouldn't want to submit the item again if it worked
// the first time.
if (!_isDone)
{
// The work has still not been done.
// Set the IsSending value and start the job.
IsSending = true;
if (operationType == SrsEntryOperationEnum.Update)
{
// Update
try
{
_isDone = _srsEntryDao.Update(_entry.Reference);
if (!_isDone)
{
ErrorMessage = R.SrsItem_EditFailure;
}
}
catch (Exception ex)
{
// An exception occured.
// Log the exception and set the error message.
LogHelper.GetLogger(this.GetType().Name)
.Error("Could not update the entity.", ex);
ErrorMessage = R.SrsItem_EditFailure;
}
}
else if (operationType == SrsEntryOperationEnum.Add)
{
// Add
try
{
// Sets some properties
Entry.Reference.CreationDate = DateTime.UtcNow;
// Add the entity to the database.
_srsEntryDao.Add(_entry.Reference);
_isDone = true;
// Saves the value of the tags
Properties.Settings.Default.LastSrsTagsValue = Entry.Tags;
}
catch (Exception ex)
{
// An exception occured.
// Log the exception and set the error message.
LogHelper.GetLogger(this.GetType().Name)
.Error("Could not add the entity.", ex);
ErrorMessage = R.SrsItem_EditFailure;
}
}
else
{
// Delete
try
{
_isDone = _srsEntryDao.Delete(_entry.Reference);
if (!_isDone)
{
ErrorMessage = R.SrsItem_EditFailure;
}
}
catch (Exception ex)
{
// An exception occured.
// Log the exception and set the error message.
LogHelper.GetLogger(this.GetType().Name)
.Error("Could not delete the entity.", ex);
ErrorMessage = R.SrsItem_EditFailure;
}
}
// After the job.
if (_isDone && FinishedEditing != null)
{
// If the job has been done, raise the event.
ExtendedSrsEntry result =
(operationType == SrsEntryOperationEnum.Delete ?
null : Entry);
FinishedEditing(this, new SrsEntryEditedEventArgs(result, true));
}
IsSending = false;
}
}
}