private SearchDialogRequest GetNextRequest(string text, List <DialogItem> dialogsSource)
{
SearchDialogRequest nextRequest;
if (!_searchResultsCache.TryGetValue(text, out nextRequest))
{
foreach (var dialogItem in dialogsSource)
{
var dialog = dialogItem.Dialog;
var chat = dialog.With as TLChatBase;
var user = dialog.With as TLUserBase;
if (chat != null && chat.FullNameWords == null)
{
chat.FullNameWords = chat.FullName.Split(' ');
}
else if (user != null && user.FullNameWords == null)
{
user.FullNameWords = user.FullName.Split(' ');
}
}
nextRequest = new SearchDialogRequest(text, dialogsSource);
}
return(nextRequest);
}
private void Search(string text)
{
if (!string.Equals(text, Text, StringComparison.OrdinalIgnoreCase))
{
return;
}
if (_lastRequest != null)
{
_lastRequest.Cancel();
}
var trimmedText = Text.Trim();
if (string.IsNullOrEmpty(trimmedText))
{
Execute.BeginOnUIThread(() =>
{
if (!string.Equals(trimmedText, Text.Trim(), StringComparison.OrdinalIgnoreCase))
{
return;
}
Rows.Clear();
var firstSliceCount = 5;
var count = 0;
var secondSlice = new List <DialogRow>();
foreach (var item in _previousRows)
{
if (count < firstSliceCount)
{
Rows.Add(item);
count++;
}
else
{
secondSlice.Add(item);
}
}
if (secondSlice.Count > 0)
{
Execute.BeginOnUIThread(() =>
{
if (!string.Equals(trimmedText, Text.Trim(), StringComparison.OrdinalIgnoreCase))
{
return;
}
foreach (var item in secondSlice)
{
Rows.Add(item);
}
});
}
});
return;
}
var nextRequest = GetNextRequest(text, DialogsSource);
nextRequest.ProcessAsync(results =>
{
if (nextRequest.IsCanceled)
{
return;
}
if (!string.Equals(Text, nextRequest.Text, StringComparison.OrdinalIgnoreCase))
{
return;
}
Rows.Clear();
if (results.Count > 0)
{
DialogRow currentRow = null;
var secondSlice = new List <DialogItem>();
var maxCount = 16;
for (var i = 0; i < results.Count; i++)
{
var d = results[i];
if (i < maxCount)
{
if (i % 4 == 0)
{
currentRow = new DialogRow();
Rows.Add(currentRow);
}
currentRow.Add(d);
d.Row = currentRow;
}
else
{
secondSlice.Add(d);
}
}
if (secondSlice.Count > 0)
{
Execute.BeginOnUIThread(() =>
{
if (nextRequest.IsCanceled)
{
return;
}
if (!string.Equals(Text, nextRequest.Text, StringComparison.OrdinalIgnoreCase))
{
return;
}
for (var i = 0; i < secondSlice.Count; i++)
{
if (i % 4 == 0)
{
currentRow = new DialogRow();
Rows.Add(currentRow);
}
currentRow.Add(secondSlice[i]);
secondSlice[i].Row = currentRow;
}
});
}
}
});
_searchResultsCache[nextRequest.Text] = nextRequest;
_lastRequest = nextRequest;
}
