private ITextView TestAutoFormat(int position, string textToType, string initialContent = "")
{
AstRoot ast;
ITextView textView = TextViewTest.MakeTextView(initialContent, position, out ast);
textView.TextBuffer.Changed += (object sender, TextContentChangedEventArgs e) => {
List <TextChangeEventArgs> textChanges = TextUtility.ConvertToRelative(e);
ast.ReflectTextChanges(textChanges);
if (e.Changes[0].NewText.Length == 1)
{
char ch = e.Changes[0].NewText[0];
if (AutoFormat.IsAutoformatTriggerCharacter(ch))
{
int offset = 0;
if (e.Changes[0].NewText[0].IsLineBreak())
{
position = e.Changes[0].OldPosition + 1;
textView.Caret.MoveTo(new SnapshotPoint(e.After, position));
offset = -1;
}
FormatOperations.FormatLine(textView, textView.TextBuffer, ast, offset);
}
}
else
{
ITextSnapshotLine line = e.After.GetLineFromPosition(position);
textView.Caret.MoveTo(new SnapshotPoint(e.After, Math.Min(e.After.Length, line.Length + 1)));
}
};
Typing.Type(textView.TextBuffer, position, textToType);
return(textView);
}
private void OnTextBufferChanged(object sender, TextContentChangedEventArgs e)
{
if (REditorSettings.SyntaxCheck && e.Changes.Count > 0)
{
var changes = TextUtility.ConvertToRelative(e);
foreach (var change in changes)
{
_errorTags.ReflectTextChange(change.Start, change.OldLength, change.NewLength,
trivialChange: !_document.EditorTree.IsReady);
}
if ((_errorTags.RemovedTags.Count > 0) && (TagsChanged != null))
{
int start = Int32.MaxValue;
int end = Int32.MinValue;
foreach (var errorTag in _errorTags.RemovedTags)
{
start = Math.Min(start, errorTag.Start);
end = Math.Max(end, errorTag.End);
}
// RemovedTags haven't had their positions updated, verify their
// values won't break the SnapshotSpan creation
ITextSnapshot snapshot = _textBuffer.CurrentSnapshot;
start = Math.Min(start, snapshot.Length);
end = Math.Min(end, snapshot.Length);
TagsChanged(this, new SnapshotSpanEventArgs(
new SnapshotSpan(snapshot, start, end - start)));
}
TasksUpdated?.Invoke(this, EventArgs.Empty);
}
}
private void OnTextBufferChanged(object sender, TextContentChangedEventArgs e)
{
if (e.Changes.Count > 0)
{
// In case of tabbing multiple lines update comes as multiple changes
// each is an insertion of whitespace in the beginning of the line.
// We don't want to combine them since then change will technically
// damage existing elements while actually it is just a whitespace change.
// All changes are relative to the current snapshot hence we have to transform
// them first and make them relative to each other so we can apply changes
// sequentially as after every change element positions will shift and hence
// next change must be relative to the new position and not to the current
// text buffer snapshot. Changes are sorted by position.
List <TextChangeEventArgs> textChanges = TextUtility.ConvertToRelative(e);
TreeUpdateTask.OnTextChanges(textChanges);
}
}