FestiveEditor - 10

FestiveImageAdornmentTaggerProvider.cs

[Export(typeof(IViewTaggerProvider))]
[ContentType("text")]
[ContentType("projection")]
[TextViewRole(PredefinedTextViewRoles.Document)]
[TagType(typeof(IntraTextAdornmentTag))]
internal sealed class FestiveImageAdornmentTaggerProvider : IViewTaggerProvider
{
    [Import]
    internal IBufferTagAggregatorFactoryService BufferTagAggregatorFactoryService;

    public ITagger<T> CreateTagger<T>(ITextView textView, ITextBuffer buffer)
        where T : ITag
    {
        if (textView == null)
        {
            throw new ArgumentNullException(nameof(textView));
        }

        if (buffer == null)
        {
            throw new ArgumentNullException(nameof(buffer));
        }

        if (buffer != textView.TextBuffer)
        {
            return null;
        }

        return FestiveImageAdornmentTagger.GetTagger(
            (IWpfTextView)textView,
            new Lazy<ITagAggregator<FestiveImageTag>>(
                () => this.BufferTagAggregatorFactoryService.CreateTagAggregator<FestiveImageTag>(textView.TextBuffer)))
            as ITagger<T>;
    }
}