public void LoadNextSlice()
{
if (!string.IsNullOrEmpty(Text))
{
return;
}
if (!_secondSliceLoaded)
{
return;
}
var maxSliceCount = int.MaxValue;
var index = 0;
var lastRow = Rows.LastOrDefault();
if (lastRow != null)
{
var lastDialogItem = lastRow.GetLast();
if (lastDialogItem != null)
{
index = DialogsSource.IndexOf(lastDialogItem);
}
}
var currentRow = lastRow;
if (currentRow != null && currentRow.HasEmptyItem())
{
for (index = index + 1; index < DialogsSource.Count; index++)
{
if (!currentRow.HasEmptyItem())
{
break;
}
var d = DialogsSource[index];
d.Row = currentRow;
currentRow.Add(d, true);
}
}
else
{
index++;
}
_lastSlice = new List <DialogRow>();
for (var count = 0; index < DialogsSource.Count && count < maxSliceCount; index++, count++)
{
if (currentRow == null || !currentRow.HasEmptyItem())
{
currentRow = new DialogRow();
_lastSlice.Add(currentRow);
}
var d = DialogsSource[index];
d.Row = currentRow;
currentRow.Add(d);
}
if (_lastSlice.Count > 0 &&
Rows.Count < 10)
{
for (var i = 0; i < 10 - Rows.Count; i++)
{
var row = _lastSlice.FirstOrDefault();
if (row != null)
{
_lastSlice.RemoveAt(0);
Rows.Add(row);
}
else
{
return;
}
}
}
}
private void UpdateDialogsAsync(TLDialog lastDialog)
{
if (_lastSliceLoaded)
{
return;
}
var offsetDate = 0;
var offsetId = 0;
TLInputPeerBase offsetPeer = new TLInputPeerEmpty();
if (lastDialog != null)
{
var lastMessage = lastDialog.TopMessage as TLMessageCommon;
if (lastMessage != null)
{
offsetDate = lastMessage.DateIndex;
offsetId = lastMessage.Index;
if (lastMessage.ToId is TLPeerUser)
{
offsetPeer = !lastMessage.Out.Value
? DialogDetailsViewModel.PeerToInputPeer(new TLPeerUser {
Id = lastMessage.FromId
})
: DialogDetailsViewModel.PeerToInputPeer(lastMessage.ToId);
}
else
{
offsetPeer = DialogDetailsViewModel.PeerToInputPeer(lastMessage.ToId);
}
}
}
var stopwatch = Stopwatch.StartNew();
IoC.Get <IMTProtoService>().GetDialogsAsync(stopwatch,
new TLInt(offsetDate),
new TLInt(offsetId),
offsetPeer,
new TLInt(int.MaxValue),
new TLInt(0),
result => Execute.BeginOnUIThread(() =>
{
_lastSliceLoaded = true;
var dialogs = result.Dialogs;
var clearedDialogs = new List <TLDialogBase>();
foreach (var d in dialogs)
{
if (Skip(d))
{
continue;
}
clearedDialogs.Add(d);
}
foreach (var clearedDialog in clearedDialogs)
{
var d = new DialogItem {
Dialog = clearedDialog
};
DialogsSource.Add(d);
}
LoadNextSlice();
}),
error => Execute.BeginOnUIThread(() =>
{
}));
}
private void LoadDialogs()
{
TLDialogBase currentUserDialog = null;
_dialogs = IoC.Get <ICacheService>().GetDialogs();
var clearedDialogs = new List <TLDialogBase>();
foreach (var d in _dialogs)
{
if (Skip(d))
{
var user = d.With as TLUser;
if (user != null && user.IsSelf)
{
currentUserDialog = d;
}
continue;
}
clearedDialogs.Add(d);
}
if (currentUserDialog != null)
{
clearedDialogs.Insert(0, currentUserDialog);
}
else
{
var currentUser = IoC.Get <ICacheService>().GetUser(new TLInt(IoC.Get <IStateService>().CurrentUserId));
currentUserDialog = new TLDialog {
Peer = new TLPeerUser {
Id = currentUser.Id
}, With = currentUser
};
clearedDialogs.Insert(0, currentUserDialog);
}
_dialogsSource = clearedDialogs;
DialogRow currentRow = null;
var rows = new Group <DialogRow>("group");
Rows = rows;
var groups = new ObservableCollection <Group <DialogRow> > {
rows
};
var secondSlice = new List <DialogRow>();
if (clearedDialogs.Count > 0)
{
var maxFirstSliceCount = 12;
var maxSecondSliceCount = 24;
for (var i = 0; i < clearedDialogs.Count; i++)
{
if (i % 4 == 0)
{
currentRow = new DialogRow();
if (i < maxFirstSliceCount)
{
rows.Add(currentRow);
}
else if (i < maxSecondSliceCount)
{
secondSlice.Add(currentRow);
}
}
var d = new DialogItem {
Dialog = clearedDialogs[i], Row = currentRow
};
DialogsSource.Add(d);
currentRow.Add(d);
}
}
var lastDialog = _dialogs.LastOrDefault(x => x is TLDialog) as TLDialog;
UpdateDialogsAsync(lastDialog);
Execute.BeginOnUIThread(() =>
{
SetListVerticalAlignment(Rows.Count);
Dialogs.ItemsSource = groups;
Dialogs.Visibility = Visibility.Visible;
Dialogs.Opacity = 0.0;
Execute.BeginOnUIThread(() =>
{
Dialogs.Opacity = 1.0;
var storyboard = new Storyboard();
var translateAnimaiton = new DoubleAnimationUsingKeyFrames();
translateAnimaiton.KeyFrames.Add(new EasingDoubleKeyFrame {
KeyTime = TimeSpan.FromSeconds(0.0), Value = Dialogs.ActualHeight
});
translateAnimaiton.KeyFrames.Add(new EasingDoubleKeyFrame {
KeyTime = TimeSpan.FromSeconds(0.4), Value = 0.0, EasingFunction = new ExponentialEase {
Exponent = 5.0, EasingMode = EasingMode.EaseOut
}
});
Storyboard.SetTarget(translateAnimaiton, Dialogs);
Storyboard.SetTargetProperty(translateAnimaiton, new PropertyPath("(UIElement.RenderTransform).(TranslateTransform.Y)"));
storyboard.Children.Add(translateAnimaiton);
storyboard.Begin();
if (secondSlice.Count > 0)
{
storyboard.Completed += (o, e) =>
{
foreach (var item in secondSlice)
{
Rows.Add(item);
}
_secondSliceLoaded = true;
LoadNextSlice();
};
}
else
{
_secondSliceLoaded = true;
LoadNextSlice();
}
});
});
}