public NewStatusViewModel(ComposerViewModel owner, NewStatus status)
{
this.owner = owner;
this.NewStatus = status;
this.Media = ViewModelHelper.CreateReadOnlyDispatcherCollection(
status.MediaPaths,
path => new MediaViewModel(path, () => status.MediaPaths.Remove(path)),
App.Current.Dispatcher);
this.CompositeDisposable.Add(this.Media);
this.CompositeDisposable.Add(new PropertyChangedEventListener(status)
{
(sender, e) => this.RaisePropertyChanged(e.PropertyName),
{ "Exception", (sender, e) => this.RaisePropertyChanged("ErrorMessage") },
});
this.CompositeDisposable.Add(new EventListener<EventHandler<CaretIndexChangeRequestedEventArgs>>(
h => this.NewStatus.CaretIndexChangeRequested += h,
h => this.NewStatus.CaretIndexChangeRequested -= h,
(sender, e) => this.Messenger.Raise(new SetCaretMessage("SetCaretIndex") { CaretIndex = e.CaretIndex })));
this.CompositeDisposable.Add(new EventListener<EventHandler<TextSelectionRequestedEventArgs>>(
h => this.NewStatus.TextSelectionRequested += h,
h => this.NewStatus.TextSelectionRequested -= h,
(sender, e) => this.Messenger.Raise(new SelectTextMessage("SelectText") { Start = e.Start, Length = e.Length })));
}
/// <summary>
/// ツイートを投稿します。
/// </summary>
public static Task<Status> UpdateStatus(this TwitterToken token, NewStatus status)
{
return status.MediaPaths.HasValue()
? token.UpdateStatus(status.TextWithFooter, status.MediaPaths.ToArray(), status.InReplyTo == null ? null : new StatusId?(status.InReplyTo.Id))
: token.UpdateStatus(status.TextWithFooter, status.InReplyTo == null ? null : new StatusId?(status.InReplyTo.Id));
}
/// <summary>
/// 指定したツイートを投稿します。
/// </summary>
public async void Update(NewStatus status)
{
if (!status.CanUpdate) return;
if(!this.NewStatuses.Contains(status)) this.NewStatuses.Add(status);
try
{
status.IsUpdating = true;
status.Exception = null;
await status.Account.CurrentToken.UpdateStatus(status);
}
catch (Exception ex)
{
ex.Write();
// 投稿に失敗した場合、例外情報を持たせる
status.Exception = ex;
return;
}
finally
{
status.IsUpdating = false;
}
// 投稿に成功した場合、キューから削除し、インスタンス破棄
this.NewStatuses.Remove(status);
status.Dispose();
}