private async Task AddToken(object data)
{
if (data is string str && TokenItemCreating != null)
{
var ticea = new TokenItemCreatingEventArgs(str);
await TokenItemCreating.InvokeAsync(this, ticea);
if (ticea.Cancel)
{
return;
}
if (ticea.Item != null)
{
data = ticea.Item; // Transformed by event implementor
}
}
var item = new TokenizingTextBoxItem()
{
Content = data,
ContentTemplateSelector = TokenItemTemplateSelector,
ContentTemplate = TokenItemTemplate,
Style = TokenItemStyle
};
item.Click += TokenizingTextBoxItem_Click; // TODO: Wonder if this needs to be in a PrepareContainerForItemOverride?
item.ClearClicked += TokenizingTextBoxItem_ClearClicked;
item.KeyUp += TokenizingTextBoxItem_KeyUp;
var removeMenuItem = new MenuFlyoutItem
{
Text = StringExtensions.GetLocalized("WindowsCommunityToolkit_TokenizingTextBoxItem_MenuFlyout_Remove", "Microsoft.Toolkit.Uwp.UI.Controls/Resources")
};
removeMenuItem.Click += (s, e) => TokenizingTextBoxItem_ClearClicked(item, null);
var menuFlyout = new MenuFlyout();
menuFlyout.Items.Add(removeMenuItem);
item.ContextFlyout = menuFlyout;
var i = _wrapPanel.Children.Count - 1;
_wrapPanel.Children.Insert(i, item);
TokenizedItemsInternal.Add(item);
TokenItemAdded?.Invoke(this, item);
}
private void RemoveToken(TokenizingTextBoxItem item)
{
var tirea = new TokenItemRemovedEventArgs(item?.Content, item);
TokenItemRemoved?.Invoke(this, tirea);
if (tirea.Cancel)
{
return;
}
SelectedItemsInternal.Remove(item);
TokenizedItemsInternal.Remove(item);
var itemIndex = Math.Max(_wrapPanel.Children.IndexOf(item) - 1, 0);
_wrapPanel.Children.Remove(item);
if (_wrapPanel.Children[itemIndex] is Control control)
{
control.Focus(FocusState.Programmatic);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="TokenizingTextBox"/> class.
/// </summary>
public TokenizingTextBox()
{
DefaultStyleKey = typeof(TokenizingTextBox);
TokenizedItemsInternal.Clear();
}
