private async void OnCodeEditorTextChanging(RichEditBox sender, RichEditBoxTextChangingEventArgs e)
{
if (e.IsContentChanging && previousSelection != currentSelection)
{
HighlightSearchBoxMatches();
CodeEditor.TextDocument.GetText(TextGetOptionsFromNewLineMode(ViewModel.NewLineMode), out string wholeText);
string?previousText = ViewModel.CurrentText;
if (wholeText != previousText)
{
ViewModel.CurrentText = wholeText;
int start = Math.Min(previousSelection.Start, currentSelection.Start);
ITextRange range = CodeEditor.Document.GetRange(start, currentSelection.End);
range.GetText(TextGetOptionsFromNewLineMode(ViewModel.NewLineMode), out string text);
TextSpan span = GetAdjustedTextSpan(TextSpan.FromBounds(start, previousSelection.End), previousText, ViewModel.NewLineMode, true);
TextChange textChange = new TextChange(span, text);
await ViewModel.ApplyChangesAsync(textChange, null);
}
}
}
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 ClearStyle(ITextRange range)
{
var start = Math.Min(range.StartPosition, range.EndPosition);
var end = Math.Max(range.StartPosition, range.EndPosition);
range.SetRange(start, end);
range.CharacterFormat = Document.GetDefaultCharacterFormat();
range.GetText(TextGetOptions.NoHidden, out string text);
range.SetText(TextSetOptions.Unlink, text);
range.SetRange(start, start + text.Length);
}
private bool TryExtractQueryFromRange(ITextRange range, out string prefix, out string query)
{
prefix = string.Empty;
query = string.Empty;
range.GetText(TextGetOptions.NoHidden, out var possibleQuery);
if (possibleQuery.Length > 0 && Prefixes.Contains(possibleQuery[0]) &&
!possibleQuery.Any(char.IsWhiteSpace) && string.IsNullOrEmpty(range.Link))
{
if (possibleQuery.Length == 1)
{
prefix = possibleQuery;
return(true);
}
prefix = possibleQuery[0].ToString();
query = possibleQuery.Substring(1);
return(true);
}
return(false);
}
public static string GetText(this ITextRange range, ITextBuffer textBuffer) => range.GetText(textBuffer.CurrentSnapshot);
public static string GetText(this ITextRange range, ITextBuffer textBuffer)
{
return(range.GetText(textBuffer.CurrentSnapshot));
}
public static string GetText(this ITextRange range)
{
range.GetText(TextGetOptions.None, out string text);
return(text);
}