Description
Describe the problem
The current model only allows a single use case: adding text as AddTokenAsync() data has to be a string. Otherwise the TokenItemAdding event isn't raised and there is no chance to change the Item to be added.
By always raising the TokenItemAdding event the TokenizingTextBox could be used in ways not possible without.
Also needed: having the possibility to access the AutoSuggestBox IsSuggestionListOpen property...
Describe the solution
TokenizingTextBox.cs
if data is not a string, call the event with string.Empty and the item set to data... should be compatible this way with existing code.
internal async Task AddTokenAsync(object data, bool? atEnd = null)
{
if (ReadLocalValue(MaximumTokensProperty) != DependencyProperty.UnsetValue && (MaximumTokens <= 0 || MaximumTokens <= _innerItemsSource.ItemsSource.Count))
{
// No tokens for you
return;
}
if (TokenItemAdding != null)
{
TokenItemAddingEventArgs tiaea;
if (data is string str)
{
tiaea = new TokenItemAddingEventArgs(str);
}
else
{
tiaea = new TokenItemAddingEventArgs(string.Empty);
tiaea.Item = data;
}
await TokenItemAdding.InvokeAsync(this, tiaea);
if (tiaea.Cancel)
{
return;
}
if (tiaea.Item != null)
{
data = tiaea.Item; // Transformed by event implementor
}
}
// If we've been typing in the last box, just add this to the end of our collection
if (atEnd == true || _currentTextEdit == _lastTextEdit)
{
_innerItemsSource.InsertAt(_innerItemsSource.Count - 1, data);
}
else
{
// Otherwise, we'll insert before our current box
var edit = _currentTextEdit;
var index = _innerItemsSource.IndexOf(edit);
// Insert our new data item at the location of our textbox
_innerItemsSource.InsertAt(index, data);
// Remove our textbox
_innerItemsSource.Remove(edit);
}
// Focus back to our end box as Outlook does.
var last = ContainerFromItem(_lastTextEdit) as TokenizingTextBoxItem;
last?._autoSuggestTextBox.Focus(FocusState.Keyboard);
TokenItemAdded?.Invoke(this, data);
GuardAgainstPlaceholderTextLayoutIssue();
}
public bool IsSuggestionListOpen
{
get => (ContainerFromItem(_lastTextEdit) is TokenizingTextBoxItem lastContainer) ? lastContainer.IsSuggestionListOpen : false;
set
{
if (ContainerFromItem(_lastTextEdit) is TokenizingTextBoxItem lastContainer) lastContainer.IsSuggestionListOpen = value;
}
}
TokenizingTextBoxItem.AutoSuggestBox.cs
internal bool IsSuggestionListOpen
{
get => (_autoSuggestBox != null) ? _autoSuggestBox.IsSuggestionListOpen : false;
set { if (_autoSuggestBox != null) _autoSuggestBox.IsSuggestionListOpen = value; }
}
Alternatives
None
Additional info
Sorry for not providing a pull request.
Spent hours integrating the needed source files into my project in Visual Studio... . "total mess" for someone new to Windows development just wanting to code and having no clue about the tool chain.
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