public void FocusBottom()
{
if (this.Timeline.Count == 0) return;
FocusedStatus = this.Timeline[this.Timeline.Count - 1];
}
public void FocusTop()
{
if (this.Timeline.Count == 0) return;
FocusedStatus = this.Timeline[0];
}
public void FocusDown()
{
if (Timeline.Count == 0) return;
var index = FocusedStatus == null
? 0
: this.Timeline.IndexOf(FocusedStatus) + 1;
if (index >= this.Timeline.Count) return;
FocusedStatus = this.Timeline[index];
}
public void FocusUp()
{
if (Timeline.Count == 0 || FocusedStatus == null) return;
var index = this.Timeline.IndexOf(FocusedStatus) - 1;
FocusedStatus = index < 0 ? null : this.Timeline[index];
}
/// <summary>
/// Constructor
/// </summary>
public InputAreaViewModel()
{
_provider = new InputAreaSuggestItemProvider();
#region Account control
_accountSelectionFlip = new AccountSelectionFlipViewModel();
_accountSelectionFlip.Closed += () =>
{
// After selection accounts, return focus to text box
// if input area is opened.
if (IsOpening)
{
FocusToTextBox();
}
};
var accountSelectReflecting = false;
_accountSelectionFlip.SelectedAccountsChanged += () =>
{
if (!_isSuppressAccountChangeRelay)
{
// write-back
accountSelectReflecting = true;
InputAreaModel.BindingAccounts.Clear();
_accountSelectionFlip.SelectedAccounts
.ForEach(InputAreaModel.BindingAccounts.Add);
accountSelectReflecting = false;
_baseSelectedAccounts = InputAreaModel.BindingAccounts.Select(_ => _.Id).ToArray();
}
InputInfo.Accounts = AccountSelectionFlip.SelectedAccounts;
RaisePropertyChanged(() => AuthInfoGridRowColumn);
UpdateTextCount();
RaisePropertyChanged(() => IsPostLimitPredictionEnabled);
};
CompositeDisposable.Add(_accountSelectionFlip);
CompositeDisposable.Add(
new CollectionChangedEventListener(
InputAreaModel.BindingAccounts,
(_, __) =>
{
RaisePropertyChanged(() => IsPostLimitPredictionEnabled);
if (accountSelectReflecting) return;
_baseSelectedAccounts = InputAreaModel.BindingAccounts
.Select(a => a.Id)
.ToArray();
ApplyBaseSelectedAccounts();
UpdateTextCount();
}));
#endregion
CompositeDisposable.Add(_bindingHashtags =
ViewModelHelperRx.CreateReadOnlyDispatcherCollectionRx(
InputAreaModel.BindingHashtags,
_ => new BindHashtagViewModel(_, () => UnbindHashtag(_)),
DispatcherHelper.UIDispatcher));
CompositeDisposable.Add(_bindingHashtags
.ListenCollectionChanged()
.Subscribe(_ => RaisePropertyChanged(() => IsBindingHashtagExisted)));
_bindableHashtagCandidates =
new DispatcherCollection<BindHashtagViewModel>(DispatcherHelper.UIDispatcher);
CompositeDisposable.Add(_bindableHashtagCandidates
.ListenCollectionChanged()
.Subscribe(_ => RaisePropertyChanged(() => IsBindableHashtagExisted)));
CompositeDisposable.Add(_draftedInputs =
ViewModelHelperRx.CreateReadOnlyDispatcherCollectionRx(
InputAreaModel.Drafts,
_ =>
new TweetInputInfoViewModel(this, _, vm => InputAreaModel.Drafts.Remove(vm)),
DispatcherHelper.UIDispatcher));
CompositeDisposable.Add(_draftedInputs
.ListenCollectionChanged()
.Subscribe(_ =>
{
RaisePropertyChanged(() => DraftCount);
RaisePropertyChanged(() => IsDraftsExisted);
}));
CompositeDisposable.Add(_bindingAuthInfos =
ViewModelHelperRx.CreateReadOnlyDispatcherCollectionRx(
InputAreaModel.BindingAccounts,
account => new TwitterAccountViewModel(account),
DispatcherHelper.UIDispatcher));
CompositeDisposable.Add(_bindingAuthInfos
.ListenCollectionChanged()
.Subscribe(_ => RaisePropertyChanged(() => IsBindingAuthInfoExisted)));
CompositeDisposable.Add(
new EventListener<Action<IEnumerable<TwitterAccount>, string, CursorPosition, TwitterStatus>>(
h => InputAreaModel.SetTextRequested += h,
h => InputAreaModel.SetTextRequested -= h, (infos, body, cursor, inReplyTo) =>
{
OpenInput(false);
if (!CheckClearInput(body)) return;
if (infos != null)
{
OverrideSelectedAccounts(infos);
}
if (inReplyTo != null)
{
Task.Run(async () => InReplyTo = new StatusViewModel(await StatusModel.Get(inReplyTo)));
}
switch (cursor)
{
case CursorPosition.Begin:
Messenger.Raise(new TextBoxSetCaretMessage(0));
break;
case CursorPosition.End:
Messenger.Raise(new TextBoxSetCaretMessage(InputText.Length));
break;
}
}));
CompositeDisposable.Add(
new EventListener<Action<IEnumerable<TwitterAccount>, TwitterUser>>(
_ => InputAreaModel.SendDirectMessageRequested += _,
_ => InputAreaModel.SendDirectMessageRequested -= _,
(infos, user) =>
{
OpenInput(false);
CheckClearInput();
OverrideSelectedAccounts(infos);
DirectMessageTo = new UserViewModel(user);
}));
CompositeDisposable.Add(InitPostLimitPrediction());
_geoWatcher = new GeoCoordinateWatcher(GeoPositionAccuracy.Default);
_geoWatcher.StatusChanged += (_, e) =>
{
if (e.Status != GeoPositionStatus.Ready)
{
IsLocationEnabled = true;
}
else
{
IsLocationEnabled = false;
AttachedLocation = null;
}
};
CompositeDisposable.Add(_geoWatcher);
_geoWatcher.Start();
}
public void FocusDown()
{
if (FocusedStatus == null)
{
FocusTop();
return;
}
var index = this.Timeline.IndexOf(FocusedStatus) + 1;
if (index >= this.Timeline.Count) return;
FocusedStatus = this.Timeline[index];
}
