public ReflectTextChange ( int start, int oldLength, int newLength, ITextProvider newText ) : void | ||
start | int | Start position of the change |
oldLength | int | Length of changed fragment before the change |
newLength | int | Length of changed fragment after the change |
newText | ITextProvider | Complete new text snapshot |
Résultat | void |
/// <summary> /// Appends indentation to each line so formatted text appears properly /// indented inside the host document (script block in HTML page). /// </summary> private static void IndentLines(ITextView textView, ITextBuffer textBuffer, ITextRange range, AstRoot ast, RFormatOptions options, int originalIndentSizeInSpaces) { ITextSnapshot snapshot = textBuffer.CurrentSnapshot; ITextSnapshotLine firstLine = snapshot.GetLineFromPosition(range.Start); ITextSnapshotLine lastLine = snapshot.GetLineFromPosition(range.End); IREditorDocument document = REditorDocument.TryFromTextBuffer(textBuffer); for (int i = firstLine.LineNumber; i <= lastLine.LineNumber; i++) { // Snapshot is updated after each insertion so do not cache ITextSnapshotLine line = textBuffer.CurrentSnapshot.GetLineFromLineNumber(i); int indent = SmartIndenter.GetSmartIndent(line, ast, originalIndentSizeInSpaces, formatting: true); if (indent > 0 && line.Length > 0 && line.Start >= range.Start) { // Check current indentation and correct for the difference int currentIndentSize = IndentBuilder.TextIndentInSpaces(line.GetText(), options.TabSize); indent = Math.Max(0, indent - currentIndentSize); if (indent > 0) { string indentString = IndentBuilder.GetIndentString(indent, options.IndentType, options.TabSize); textBuffer.Insert(line.Start, indentString); if (document == null) { // Typically this is a test scenario only. In the real editor // instance document is available and automatically updates AST // when whitespace inserted, not no manual update is necessary. ast.ReflectTextChange(line.Start, 0, indentString.Length, new TextProvider(textBuffer.CurrentSnapshot)); } } } } }