| 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 |
| return | 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));
}
}
}
}
}
