Upgrading to 11.x - AddOwnerWithDataValidation and ItemContainerGenerator<T>

[alexandrehtrb]

Hello,

I am trying to migrate the AvaloniaTokenizingTextBox project to Avalonia 11.x, but I don't know how to refactor some parts of the code.

public static readonly DirectProperty<TokenizingTextBox, string> TextProperty =
    TextBlock.TextProperty.AddOwnerWithDataValidation<TokenizingTextBox>(
        o => o.Text,
        (o, v) => o.Text = v,
        defaultBindingMode: BindingMode.TwoWay,
        enableDataValidation: true);

AddOwnerWithDataValidation doesn't exist anymore, what is the alternative?

protected override IItemContainerGenerator CreateItemContainerGenerator()
{
    return new ItemContainerGenerator<TokenizingTextBoxItem>(
        this,
        TokenizingTextBoxItem.ContentProperty,
        TokenizingTextBoxItem.ContentTemplateProperty);
}

There is no ItemContainerGenerator<T> and SelectingItemsControl class doesn't have a CreateItemContainerGenerator() method to override. How to fix that?

[timunie]

You may want to look into TextBlock source and ListBoxSource for reference.

[alexandrehtrb]

Answering here.

AddOwnerWithDataValidation

Now is:

/// <summary>
/// Defines the <see cref="Text"/> property.
/// </summary>
public static readonly StyledProperty<string?> TextProperty =
    TextBlock.TextProperty.AddOwner<TokenizingTextBox>(new(
        coerce: (sender, text) => text,
        defaultBindingMode: BindingMode.TwoWay,
        enableDataValidation: true));

You can customize coerce callback if you want.

CreateItemContainerGenerator

Doesn't exist anymore. Replace the former method with the overrides below:

protected override Control CreateContainerForItemOverride(object? item, int index, object? recycleKey)
{
    return new TokenizingTextBoxItem();
}

protected override bool NeedsContainerOverride(object? item, int index, out object? recycleKey)
{
    return NeedsContainer<TokenizingTextBoxItem>(item, out recycleKey);
}