private bool TryCommitSuggestionIntoDocument(ITextRange range, string displayText, Guid id, ITextCharacterFormat format, bool addTrailingSpace = true)
{
// We don't want to set text when the display text doesn't change since it may lead to unexpected caret move.
range.GetText(TextGetOptions.NoHidden, out var existingText);
if (existingText != displayText)
{
range.SetText(TextSetOptions.Unhide, displayText);
}
var formatBefore = range.CharacterFormat.GetClone();
range.CharacterFormat.SetClone(format);
PadRange(range, formatBefore);
range.Link = $"\"{id}\"";
// In some rare case, setting Link can fail. Only observed when interacting with Undo/Redo feature.
if (range.Link != $"\"{id}\"")
{
range.Delete(TextRangeUnit.Story, -1);
return(false);
}
if (addTrailingSpace)
{
var clone = range.GetClone();
clone.Collapse(false);
clone.SetText(TextSetOptions.Unhide, " ");
clone.Collapse(false);
TextDocument.Selection.SetRange(clone.EndPosition, clone.EndPosition);
}
return(true);
}
private void ValidateTokenFromRange(ITextRange range)
{
if (range.Length == 0 || !TryGetTokenFromRange(range, out var token))
{
return;
}
// Check for duplicate tokens. This can happen if the user copies and pastes the token multiple times.
if (token.Active && token.RangeStart != range.StartPosition && token.RangeEnd != range.EndPosition)
{
var guid = Guid.NewGuid();
if (TryCommitSuggestionIntoDocument(range, token.DisplayText, guid, CreateTokenFormat(range), false))
{
token = new RichSuggestToken(guid, token.DisplayText)
{
Active = true, Item = token.Item
};
token.UpdateTextRange(range);
_tokens.Add(range.Link, token);
}
return;
}
if (token.ToString() != range.Text)
{
range.Delete(TextRangeUnit.Story, 0);
token.Active = false;
return;
}
token.UpdateTextRange(range);
token.Active = true;
}
