public override bool Indent()
{
string textToInsert = _editorOptions.IsConvertTabsToSpacesEnabled() ? new string(' ', _editorOptions.GetTabSize()) : "\t";
if (_startPoint.LineNumber == _endPoint.LineNumber)
{
return(_startPoint.InsertIndent());
}
using (ITextEdit edit = TextBuffer.AdvancedTextBuffer.CreateEdit())
{
ITextSnapshot snapshot = TextBuffer.AdvancedTextBuffer.CurrentSnapshot;
for (int i = _startPoint.LineNumber; i <= _endPoint.LineNumber; i++)
{
ITextSnapshotLine line = snapshot.GetLineFromLineNumber(i);
if ((line.Length > 0) &&
(line.Start != _endPoint.CurrentPosition))
{
if (!edit.Insert(line.Start, textToInsert))
{
return(false);
}
}
}
edit.Apply();
if (edit.Canceled)
{
return(false);
}
}
return(true);
}
public override bool InsertIndent()
{
return(_bufferPoint.InsertIndent());
}
public override bool Indent()
{
bool singleLineSelection = (GetStartPoint().LineNumber == GetEndPoint().LineNumber);
bool entireLastLineSelected
= (GetStartPoint().CurrentPosition != GetEndPoint().CurrentPosition&&
GetStartPoint().CurrentPosition == TextBuffer.GetEndPoint().StartOfLine&&
GetEndPoint().CurrentPosition == TextBuffer.GetEndPoint().EndOfLine);
if (singleLineSelection && !entireLastLineSelected)
{
TextPoint endPoint = GetEndPoint();
if (!Delete())
{
return(false);
}
if (!endPoint.InsertIndent())
{
return(false);
}
TextView.AdvancedTextView.Caret.MoveTo(endPoint.AdvancedTextPoint);
}
else // indent the selected lines
{
VirtualSnapshotPoint oldStartPoint = TextSelection.Start;
VirtualSnapshotPoint oldEndPoint = TextSelection.End;
bool isReversed = TextSelection.IsReversed;
ITextSnapshotLine startLine = AdvancedTextRange.Snapshot.GetLineFromPosition(oldStartPoint.Position);
ITextSnapshotLine endLine = AdvancedTextRange.Snapshot.GetLineFromPosition(oldEndPoint.Position);
// If the selection span initially starts at the whitespace at the beginning of the line in the startLine or
// ends at the whitespace at the beginning of the line in the endLine, restore selection and caret position,
// *unless* the selection was in box mode.
bool startAtStartLineWhitespace = oldStartPoint.Position <= _textView.GetTextPoint(startLine.Start).GetFirstNonWhiteSpaceCharacterOnLine().CurrentPosition;
bool endAtEndLineWhitespace = oldEndPoint.Position < _textView.GetTextPoint(endLine.Start).GetFirstNonWhiteSpaceCharacterOnLine().CurrentPosition;
bool isBoxSelection = AdvancedSelection.Mode == TextSelectionMode.Box;
if (isBoxSelection)
{
if (!this.BoxIndent())
{
return(false);
}
}
else
{
if (!TextRange.Indent())
{
return(false);
}
}
// Computing the new selection and caret position
VirtualSnapshotPoint newStartPoint = TextSelection.Start;
VirtualSnapshotPoint newEndPoint = TextSelection.End;
if (!isBoxSelection && (startAtStartLineWhitespace || endAtEndLineWhitespace))
{
// After indent selection span should start at the start of startLine and end at the start of endLine
if (startAtStartLineWhitespace)
{
newStartPoint = new VirtualSnapshotPoint(AdvancedTextRange.Snapshot, oldStartPoint.Position.Position);
}
if (endAtEndLineWhitespace && oldEndPoint.Position.Position != endLine.Start && endLine.Length != 0)
{
int insertedTextSize = _editorOptions.IsConvertTabsToSpacesEnabled() ? _editorOptions.GetTabSize() : 1;
newEndPoint = new VirtualSnapshotPoint(AdvancedTextRange.Snapshot, newEndPoint.Position.Position - insertedTextSize);
}
if (!isReversed)
{
TextSelection.Select(newStartPoint, newEndPoint);
}
else
{
TextSelection.Select(newEndPoint, newStartPoint);
}
TextView.AdvancedTextView.Caret.MoveTo(TextSelection.ActivePoint, PositionAffinity.Successor);
}
}
TextView.AdvancedTextView.Caret.EnsureVisible();
return(true);
}
