protected IEnumerable <IBaseModel> LoadModel(params IListParameter[] parameters)
{
_cancellationTokenSource = new CancellationTokenSource();
//var ret = TaskEx.Run(() => AutoCompleteDataManager.Get<IBaseModel>(parameters), _cancellationTokenSource.Token);
if (AutoCompleteDataManager == null)
{
return(null);
}
var ret = AutoCompleteDataManager.Get <IBaseModel>(parameters);
_cancellationTokenSource = null;
return(ret);
}
protected override void OnLoaded()
{
base.OnLoaded();
AppearanceReadOnly.TextOptions.HAlignment = HorzAlignment.Near;
_autocompleteCache = new Dictionary <int, string>();
ButtonClick += (sender, args) =>
{
var dLookup = sender as dLookupF;
if (dLookup != null && dLookup.Enabled)
{
dLookup.OpenLookupPopup();
}
};
CustomDisplayText += (sender, args) =>
{
int output;
if (args.Value != null && int.TryParse(args.Value.ToString(), out output))
{
var model = AutoCompleteDataManager.GetFirst <IBaseModel>(WhereTerm.Default(output, "id"));
args.DisplayText = model != null?AutoCompleteDisplayFormater(model) : string.Empty;
_autocompleteCache.Clear();
_autocompleteCache.Add(output, args.DisplayText);
}
};
ParseEditValue += (sender, args) =>
{
if (_parsingEditValue)
{
return;
}
if (_skipNextEditValueParsing)
{
_skipNextEditValueParsing = false;
return;
}
_parsingEditValue = true;
int output;
var lookup = sender as dLookupF;
if (lookup == null)
{
return;
}
if (args.Value != null && int.TryParse(args.Value.ToString(), out output))
{
if (!_autocompleteCache.ContainsKey(output))
{
lookup.DefaultValue = new IListParameter[] { WhereTerm.Default(output, "id") };
args.Value = lookup.DisplayString;
_previousDisplayString = lookup.DisplayString;
_autocompleteCache.Add(output, lookup.DisplayString);
}
else
{
lookup.Value = output;
args.Value = _autocompleteCache[output];
}
}
else if (lookup.Value != null && int.TryParse(lookup.Value.ToString(), out output))
{
if (args.Value != null && !args.Value.Equals(_previousDisplayString))
{
_skipNextEditValueParsing = true;
}
args.Value = output;
}
_skipNextEditValueParsing = true;
args.Handled = true;
_parsingEditValue = false;
};
FormatEditValue += (sender, args) =>
{
if (_formattingEditValue)
{
return;
}
_formattingEditValue = true;
int output;
if (args.Value != null && int.TryParse(args.Value.ToString(), out output))
{
if (!_autocompleteCache.ContainsKey(output))
{
var model = AutoCompleteDataManager.GetFirst <IBaseModel>(WhereTerm.Default(output, "id"));
args.Value = model != null?AutoCompleteDisplayFormater(model) : string.Empty;
_autocompleteCache.Add(output, args.Value.ToString());
}
else
{
args.Value = _autocompleteCache[output];
}
}
args.Handled = true;
_formattingEditValue = false;
};
}
private void AutoComplete()
{
// ReSharper disable once TooWideLocalVariableScope
int count;
if (!ClearOnLeave)
{
return;
}
if (Text.Length < OriginalTextStartPosition)
{
OriginalTextStartPosition = 0;
}
var strlen = Text.Length - OriginalTextStartPosition - SelectionLength;
if (strlen > Text.Length - OriginalTextStartPosition || strlen < 0)
{
strlen = Text.Length - OriginalTextStartPosition;
}
var searchTerm = Text.Substring(OriginalTextStartPosition, strlen);
if (!searchTerm.IsEmpty() && !Array.Exists(AutoCompleteCachedSource, s => s.Contains(searchTerm)) &&
searchTerm.Length > AutocompleteMinimumTextLength)
{
IQueryable <IBaseModel> result = null;
if (AutoCompleteWheretermFormater != null)
{
result = AutoCompleteDataManager
.Get <IBaseModel>(Paging.Instance(0, 1), out count, AutoCompleteWheretermFormater(searchTerm))
.AsQueryable();
}
else if (AutoCompleteWhereExpression != null)
{
if (!(AutoCompleteDataManager is IExtendedQueryableDataManager))
{
throw new Exception(string.Format("Autocomplete field {0} is using AutoCompleteWhereExpression property, but the AutoCompleteDataManager property does not implement IExtendedQueryableDataManager.", Name));
}
var param = new AutoCompleteWhereExpressionParam();
AutoCompleteWhereExpression(searchTerm, param);
result = ((IExtendedQueryableDataManager)AutoCompleteDataManager)
.Get <IBaseModel>(Paging.Instance(0, 1), out count, param.Expression, param.Parameters)
.AsQueryable();
}
if (result != null && result.Any())
{
Value = (int)result.Select(model => model.Id).ToArray().GetValue(0);
DisplayString = result.Select(AutoCompleteDisplayFormater).ToArray().GetValue(0).ToString();
ByAuto = true;
var strtemp = searchTerm;
if (AutoCompleteText != null)
{
Text = result.Select(AutoCompleteText).ToArray().GetValue(0).ToString();
}
else
{
Text = DisplayString;
}
OriginalTextStartPosition = Text.ToLower().IndexOf(strtemp.ToLower(), StringComparison.Ordinal);
var startSel = OriginalTextStartPosition + strtemp.Length;
SelectionStart = startSel;
SelectionLength = Text.Length - startSel;
OriginalTextStartPosition = OriginalTextStartPosition < 0 ? 0 : OriginalTextStartPosition;
DisplayString = Text;
}
else
{
Value = null;
DisplayString = string.Empty;
}
}
if (Text.IsEmpty())
{
Value = null;
DisplayString = string.Empty;
}
}