private static void OnItemFilterPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
AutoCompleteBox source = (AutoCompleteBox)d;
AutoCompleteFilterPredicate <object> value = (AutoCompleteFilterPredicate <object>)e.NewValue;
if (value == null)
{
source.FilterMode = AutoCompleteFilterMode.None;
}
else
{
source.FilterMode = AutoCompleteFilterMode.Custom;
}
}
public void Item_Search()
{
RunTest((control, textbox) =>
{
control.FilterMode = AutoCompleteFilterMode.Custom;
control.ItemFilter = (search, item) =>
{
string s = item as string;
return(s == null ? false : true);
};
// Just set to null briefly to exercise that code path
AutoCompleteFilterPredicate <object> filter = control.ItemFilter;
Assert.NotNull(filter);
control.ItemFilter = null;
Assert.Null(control.ItemFilter);
control.ItemFilter = filter;
Assert.NotNull(control.ItemFilter);
textbox.Text = "a";
Dispatcher.UIThread.RunJobs();
Assert.Equal(textbox.Text, control.Text);
textbox.Text = "acc";
Dispatcher.UIThread.RunJobs();
Assert.Equal(textbox.Text, control.Text);
textbox.Text = "a";
Dispatcher.UIThread.RunJobs();
Assert.Equal(textbox.Text, control.Text);
textbox.Text = "";
Dispatcher.UIThread.RunJobs();
Assert.Equal(textbox.Text, control.Text);
textbox.Text = "cook";
Dispatcher.UIThread.RunJobs();
Assert.Equal(textbox.Text, control.Text);
textbox.Text = "accept";
Dispatcher.UIThread.RunJobs();
Assert.Equal(textbox.Text, control.Text);
textbox.Text = "cook";
Dispatcher.UIThread.RunJobs();
Assert.Equal(textbox.Text, control.Text);
});
}
public TransactionViewModel(IEventAggregator eventAggregator)
{
eventAggregator.Subscribe(this);
categoryFilter = (search, item) =>
{
if (string.IsNullOrEmpty(search))
{
return(true);
}
if (item is CategoryDTO)
{
string searchToLower = search.ToLower(CultureInfo.InvariantCulture);
return((item as CategoryDTO).Name.ToLower(CultureInfo.InvariantCulture).Contains(searchToLower));
}
return(false);
};
Translator.CultureChanged += (sender, args) => OperationDate = DateTime.Now;
}
/// <summary>
/// Attempts to look through the view and locate the specific exact
/// text match.
/// </summary>
/// <param name="searchText">The search text.</param>
/// <param name="view">The view reference.</param>
/// <param name="predicate">The predicate to use for the partial or
/// exact match.</param>
/// <returns>Returns the object or null.</returns>
private object TryGetMatch(string searchText, ObservableCollection<object> view, AutoCompleteFilterPredicate<string> predicate)
{
if (view != null && view.Count > 0)
{
foreach (object o in view)
{
if (predicate(searchText, FormatValue(o)))
{
return o;
}
}
}
return null;
}
private void SelectFilter(AutoCompleteFilterMode mode)
{
switch (mode)
{
case AutoCompleteFilterMode.None:
this._filterMode = AutoCompleteFilterMode.None;
this._filter = None;
break;
case AutoCompleteFilterMode.StartsWith:
this._filterMode = AutoCompleteFilterMode.StartsWith;
this._filter = StartsWith;
break;
case AutoCompleteFilterMode.StartsWithCaseSensitive:
this._filterMode = AutoCompleteFilterMode.StartsWithCaseSensitive;
this._filter = StartsWithCaseSensitive;
break;
case AutoCompleteFilterMode.StartsWithOrdinal:
this._filterMode = AutoCompleteFilterMode.StartsWithOrdinal;
this._filter = StartsWithOrdinal;
break;
case AutoCompleteFilterMode.StartsWithOrdinalCaseSensitive:
this._filterMode = AutoCompleteFilterMode.StartsWithOrdinalCaseSensitive;
this._filter = StartsWithOrdinalCaseSensitive;
break;
case AutoCompleteFilterMode.Contains:
this._filterMode = AutoCompleteFilterMode.Contains;
this._filter = Contains;
break;
case AutoCompleteFilterMode.ContainsCaseSensitive:
this._filterMode = AutoCompleteFilterMode.ContainsCaseSensitive;
this._filter = ContainsCaseSensitive;
break;
case AutoCompleteFilterMode.ContainsOrdinal:
this._filterMode = AutoCompleteFilterMode.ContainsOrdinal;
this._filter = ContainsOrdinal;
break;
case AutoCompleteFilterMode.ContainsOrdinalCaseSensitive:
this._filterMode = AutoCompleteFilterMode.ContainsOrdinalCaseSensitive;
this._filter = ContainsOrdinalCaseSensitive;
break;
case AutoCompleteFilterMode.Equals:
this._filterMode = AutoCompleteFilterMode.Equals;
this._filter = Equals;
break;
case AutoCompleteFilterMode.EqualsCaseSensitive:
this._filterMode = AutoCompleteFilterMode.EqualsCaseSensitive;
this._filter = EqualsCaseSensitive;
break;
case AutoCompleteFilterMode.EqualsOrdinal:
this._filterMode = AutoCompleteFilterMode.EqualsOrdinal;
this._filter = EqualsOrdinal;
break;
case AutoCompleteFilterMode.EqualsOrdinalCaseSensitive:
this._filterMode = AutoCompleteFilterMode.EqualsOrdinalCaseSensitive;
this._filter = EqualsOrdinalCaseSensitive;
break;
case AutoCompleteFilterMode.Custom:
this._filterMode = AutoCompleteFilterMode.Custom;
this._filter = Custom;
break;
default:
throw new ArgumentException("Filters can't be combined.");
}
}
/// <summary>
/// Attempts to look through the view and locate the specific exact
/// text match.
/// </summary>
/// <param name="searchText">The search text.</param>
/// <param name="view">The view reference.</param>
/// <param name="predicate">The predicate to use for the partial or
/// exact match.</param>
/// <returns>Returns the object or null.</returns>
private object TryGetMatch(string searchText, ObservableCollection<object> view, AutoCompleteFilterPredicate<string> predicate)
{
if(view != null && view.Count > 0)
{
return view.FirstOrDefault(o => predicate(searchText, FormatValue(o)));
}
return null;
}
