public TextSnapshot(TextImage textImage, IContentType contentType, TextBuffer textBuffer, ITextVersion textVersion)
{
this.textImage = textImage ?? throw new ArgumentNullException(nameof(textImage));
ContentType = contentType ?? throw new ArgumentNullException(nameof(contentType));
TextBuffer = textBuffer ?? throw new ArgumentNullException(nameof(textBuffer));
Version = textVersion ?? throw new ArgumentNullException(nameof(textVersion));
}
void CreateNewCurrentSnapshot(IList <ITextChange> changes, int?reiteratedVersionNumber = null, ITextSource afterTextSource = null)
{
// It's null the first time it's called from the ctor
if (changes != null)
{
currentTextVersion = currentTextVersion.SetChanges(changes, reiteratedVersionNumber);
}
var textSource = afterTextSource ?? Document.CreateSnapshot();
var textImage = new TextImage(this, textSource, currentTextVersion.ImageVersion);
CurrentSnapshot = new TextSnapshot(textImage, ContentType, this, currentTextVersion);
}