static void DeleteExistingDefinition(ITextSnapshot snapshot, Parser.Result result)
{
DTE2 dte = Global.GetDTE2();
ITextEdit edit = snapshot.TextBuffer.CreateEdit();
try
{
ITextSnapshotLine currentLine;
for (int i = result.StartLine - 1; i <= result.EndLine - 1; i++)
{
currentLine = snapshot.GetLineFromLineNumber(i);
edit.Delete(currentLine.Start.Position, currentLine.LengthIncludingLineBreak);
}
//remove separating empty line if found
if (snapshot.LineCount > result.EndLine)
{
currentLine = snapshot.GetLineFromLineNumber(result.EndLine);
if (string.IsNullOrWhiteSpace(currentLine.GetText()))
{
edit.Delete(currentLine.Start.Position, currentLine.LengthIncludingLineBreak);
}
}
edit.Apply();
}
catch
{
edit.Cancel();
}
dte.ActiveDocument.Save();
}
public override bool Capitalize()
{
int startPosition = _startPoint.CurrentPosition;
if (IsEmpty)
{
int endPosition = _endPoint.CurrentPosition;
TextRange currentWord = _startPoint.GetCurrentWord();
string nextCharacter = _startPoint.GetNextCharacter();
if (_startPoint.CurrentPosition == currentWord.GetStartPoint().CurrentPosition)
{
nextCharacter = nextCharacter.ToUpper(CultureInfo.CurrentCulture);
}
else
{
nextCharacter = nextCharacter.ToLower(CultureInfo.CurrentCulture);
}
if (!PrimitivesUtilities.Replace(TextBuffer.AdvancedTextBuffer, new Span(_startPoint.CurrentPosition, nextCharacter.Length), nextCharacter))
{
return(false);
}
_endPoint.MoveTo(endPosition);
}
else
{
using (ITextEdit edit = TextBuffer.AdvancedTextBuffer.CreateEdit())
{
TextRange currentWord = _startPoint.GetCurrentWord();
// If the current word extends past this range, go to the next word
if (currentWord.GetStartPoint().CurrentPosition < _startPoint.CurrentPosition)
{
currentWord = currentWord.GetEndPoint().GetNextWord();
}
while (currentWord.GetStartPoint().CurrentPosition < _endPoint.CurrentPosition)
{
string wordText = currentWord.GetText();
string startElement = StringInfo.GetNextTextElement(wordText);
wordText = startElement.ToUpper(CultureInfo.CurrentCulture) + wordText.Substring(startElement.Length).ToLower(CultureInfo.CurrentCulture);
if (!edit.Replace(currentWord.AdvancedTextRange.Span, wordText))
{
edit.Cancel();
return(false);
}
currentWord = currentWord.GetEndPoint().GetNextWord();
}
edit.Apply();
if (edit.Canceled)
{
return(false);
}
}
}
_startPoint.MoveTo(startPosition);
return(true);
}
public void PreOverType(out bool handledCommand)
{
handledCommand = false;
if (ClosingPoint == null)
{
return;
}
// Brace completion is not cancellable.
var cancellationToken = CancellationToken.None;
var snapshot = this.SubjectBuffer.CurrentSnapshot;
var document = snapshot.GetOpenDocumentInCurrentContextWithChanges();
SnapshotPoint closingSnapshotPoint = ClosingPoint.GetPoint(snapshot);
if (!HasForwardTyping && _session.AllowOverType(this, cancellationToken))
{
SnapshotPoint?caretPos = this.GetCaretPosition();
Debug.Assert(caretPos.HasValue && caretPos.Value.Position < closingSnapshotPoint.Position);
// ensure that we are within the session before clearing
if (caretPos.HasValue && caretPos.Value.Position < closingSnapshotPoint.Position && closingSnapshotPoint.Position > 0)
{
using (ITextUndoTransaction undo = CreateUndoTransaction())
{
_editorOperations.AddBeforeTextBufferChangePrimitive();
SnapshotSpan span = new SnapshotSpan(caretPos.Value, closingSnapshotPoint.Subtract(1));
using (ITextEdit edit = SubjectBuffer.CreateEdit())
{
edit.Delete(span);
if (edit.HasFailedChanges)
{
Debug.Fail("Unable to clear closing brace");
edit.Cancel();
undo.Cancel();
}
else
{
handledCommand = true;
edit.Apply();
MoveCaretToClosingPoint();
_editorOperations.AddAfterTextBufferChangePrimitive();
undo.Complete();
}
}
}
}
}
}
/// <summary>
/// Rollback all modified text in the document except specified <see cref="IDiffChange"/>.
/// </summary>
/// <param name="diffChange">Information about a specific difference between two sequences.</param>
private void RollbackAllButThisChange(IDiffChange diffChange)
{
ITextEdit edit = _textView.TextBuffer.CreateEdit();
Span viewSpan;
try
{
string modifiedRegionText = _marginCore.GetModifiedText(diffChange, false);
string originalText = _marginCore.GetOriginalText();
edit.Delete(0, edit.Snapshot.Length);
edit.Insert(0, originalText);
ApplyEdit(edit, "Undo Modified Text");
edit = _textView.TextBuffer.CreateEdit();
ITextSnapshotLine startLine = edit.Snapshot.GetLineFromLineNumber(diffChange.OriginalStart);
ITextSnapshotLine endLine = edit.Snapshot.GetLineFromLineNumber(diffChange.OriginalEnd);
int start = startLine.Start.Position;
int length = endLine.EndIncludingLineBreak.Position - start;
switch (diffChange.ChangeType)
{
case DiffChangeType.Insert:
edit.Insert(start, modifiedRegionText);
viewSpan = new Span(start, modifiedRegionText.Length);
break;
case DiffChangeType.Delete:
edit.Delete(start, length);
viewSpan = new Span(start, 0);
break;
case DiffChangeType.Change:
edit.Replace(start, length, modifiedRegionText);
viewSpan = new Span(start, modifiedRegionText.Length);
break;
default:
throw new InvalidEnumArgumentException();
}
ApplyEdit(edit, "Restore Modified Region");
}
catch (Exception)
{
edit.Cancel();
throw;
}
var viewSnapshotSpan = new SnapshotSpan(_textView.TextSnapshot, viewSpan);
_textView.ViewScroller.EnsureSpanVisible(viewSnapshotSpan, EnsureSpanVisibleOptions.AlwaysCenter);
}
public override bool ToggleCase()
{
if (IsEmpty)
{
TextPoint nextPoint = _startPoint.Clone();
nextPoint.MoveToNextCharacter();
TextRange nextCharacter = _startPoint.GetTextRange(nextPoint);
string nextCharacterString = nextCharacter.GetText();
if (char.IsUpper(nextCharacterString, 0))
{
nextCharacterString = nextCharacterString.ToLower(CultureInfo.CurrentCulture);
}
else
{
nextCharacterString = nextCharacterString.ToUpper(CultureInfo.CurrentCulture);
}
return(nextCharacter.ReplaceText(nextCharacterString));
}
else
{
int startPosition = _startPoint.CurrentPosition;
using (ITextEdit textEdit = TextBuffer.AdvancedTextBuffer.CreateEdit())
{
for (int i = _startPoint.CurrentPosition; i < _endPoint.CurrentPosition; i++)
{
char newChar = textEdit.Snapshot[i];
if (char.IsUpper(newChar))
{
newChar = char.ToLower(newChar, CultureInfo.CurrentCulture);
}
else
{
newChar = char.ToUpper(newChar, CultureInfo.CurrentCulture);
}
if (!textEdit.Replace(i, 1, newChar.ToString(CultureInfo.CurrentCulture)))
{
textEdit.Cancel();
return(false); // break out early if any edit fails to reduce the time of the failure case
}
}
textEdit.Apply();
if (textEdit.Canceled)
{
return(false);
}
}
_startPoint.MoveTo(startPosition);
}
return(true);
}
public override bool TransposeLine(int lineNumber)
{
if ((lineNumber < 0) || (lineNumber > _textBuffer.AdvancedTextBuffer.CurrentSnapshot.LineCount))
{
throw new ArgumentOutOfRangeException(nameof(lineNumber));
}
ITextSnapshot currentSnapshot = _textBuffer.AdvancedTextBuffer.CurrentSnapshot;
// If there is only a single line in this buffer, don't do anything.
if (currentSnapshot.LineCount <= 1)
{
return(true);
}
ITextSnapshotLine currentLine = currentSnapshot.GetLineFromPosition(CurrentPosition);
ITextSnapshotLine nextLine = currentSnapshot.GetLineFromLineNumber(lineNumber);
using (ITextEdit edit = _textBuffer.AdvancedTextBuffer.CreateEdit())
{
// Make sure that both replaces succeed before applying
if ((edit.Replace(currentLine.Extent, nextLine.GetText())) &&
(edit.Replace(nextLine.Extent, currentLine.GetText())))
{
edit.Apply();
if (edit.Canceled)
{
return(false);
}
}
else
{
edit.Cancel();
return(false);
}
}
int newLineNumber = nextLine.LineNumber;
if (currentLine.LineNumber == currentSnapshot.LineCount - 1)
{
newLineNumber = currentLine.LineNumber;
}
MoveTo(_textBuffer.AdvancedTextBuffer.CurrentSnapshot.GetLineFromLineNumber(newLineNumber).Start);
return(true);
}
public void PreOverType(out bool handledCommand)
{
handledCommand = false;
// AllowOverType may make changes to the buffer such as for completing intellisense
if (!HasForwardTyping && (_context == null || _context.AllowOverType(this)))
{
SnapshotPoint?caretPos = CaretPosition;
SnapshotPoint closingSnapshotPoint = _closingPoint.GetPoint(SubjectBuffer.CurrentSnapshot);
Debug.Assert(caretPos.HasValue && caretPos.Value.Position < closingSnapshotPoint.Position);
// ensure that we are within the session before clearing
if (caretPos.HasValue && caretPos.Value.Position < closingSnapshotPoint.Position && closingSnapshotPoint.Position > 0)
{
using (ITextUndoTransaction undo = CreateUndoTransaction())
{
_editorOperations.AddBeforeTextBufferChangePrimitive();
SnapshotSpan span = new SnapshotSpan(caretPos.Value, closingSnapshotPoint.Subtract(1));
using (ITextEdit edit = _subjectBuffer.CreateEdit())
{
edit.Delete(span);
if (edit.HasFailedChanges)
{
Debug.Fail("Unable to clear closing brace");
edit.Cancel();
undo.Cancel();
}
else
{
handledCommand = true;
edit.Apply();
MoveCaretToClosingPoint();
_editorOperations.AddAfterTextBufferChangePrimitive();
undo.Complete();
}
}
}
}
}
}
/// <summary>
/// Rollback modified text.
/// </summary>
/// <param name="diffChange">Information about a specific difference between two sequences.</param>
private void RollbackChange(IDiffChange diffChange)
{
ITextEdit edit = _textView.TextBuffer.CreateEdit();
try
{
ITextSnapshot snapshot = edit.Snapshot;
ITextSnapshotLine startLine = snapshot.GetLineFromLineNumber(diffChange.ModifiedStart);
ITextSnapshotLine endLine = snapshot.GetLineFromLineNumber(diffChange.ModifiedEnd);
int start;
if (diffChange.ChangeType != DiffChangeType.Delete)
{
start = startLine.Start.Position;
int length = endLine.EndIncludingLineBreak.Position - start;
edit.Delete(start, length);
}
else
{
if (startLine.LineNumber == 0 && endLine.LineNumber == 0)
{
start = startLine.Start.Position;
}
else
{
start = startLine.EndIncludingLineBreak.Position;
}
}
if (diffChange.ChangeType != DiffChangeType.Insert)
{
string text = _marginCore.GetOriginalText(diffChange, false);
edit.Insert(start, text);
}
ApplyEdit(edit, "Rollback Modified Region");
}
catch (Exception)
{
edit.Cancel();
throw;
}
}
public void PreBackspace(out bool handledCommand)
{
handledCommand = false;
SnapshotPoint?caretPos = CaretPosition;
ITextSnapshot snapshot = SubjectBuffer.CurrentSnapshot;
if (caretPos.HasValue && caretPos.Value.Position > 0 && (caretPos.Value.Position - 1) == _openingPoint.GetPoint(snapshot).Position &&
!HasForwardTyping)
{
using (ITextUndoTransaction undo = CreateUndoTransaction())
{
using (ITextEdit edit = SubjectBuffer.CreateEdit())
{
SnapshotSpan span = new SnapshotSpan(_openingPoint.GetPoint(snapshot), _closingPoint.GetPoint(snapshot));
edit.Delete(span);
if (edit.HasFailedChanges)
{
edit.Cancel();
undo.Cancel();
Debug.Fail("Unable to clear braces");
// just let this backspace proceed normally
}
else
{
// handle the command so the backspace does
// not go through since we've already cleared the braces
handledCommand = true;
edit.Apply();
undo.Complete();
EndSession();
}
}
}
}
}
private void Start(CancellationToken cancellationToken)
{
// this is where the caret should go after the change
SnapshotPoint pos = TextView.Caret.Position.BufferPosition;
ITrackingPoint beforeTrackingPoint = pos.Snapshot.CreateTrackingPoint(pos.Position, PointTrackingMode.Negative);
ITextSnapshot snapshot = SubjectBuffer.CurrentSnapshot;
SnapshotPoint closingSnapshotPoint = ClosingPoint.GetPoint(snapshot);
if (closingSnapshotPoint.Position < 1)
{
Debug.Fail("The closing point was not found at the expected position.");
EndSession();
return;
}
SnapshotPoint openingSnapshotPoint = closingSnapshotPoint.Subtract(1);
if (openingSnapshotPoint.GetChar() != OpeningBrace)
{
// there is a bug in editor brace completion engine on projection buffer that already fixed in vs_pro. until that is FIed to use
// I will make this not to assert
// Debug.Fail("The opening brace was not found at the expected position.");
EndSession();
return;
}
OpeningPoint = snapshot.CreateTrackingPoint(openingSnapshotPoint, PointTrackingMode.Positive);
var document = snapshot.GetOpenDocumentInCurrentContextWithChanges();
if (!_session.CheckOpeningPoint(this, cancellationToken))
{
EndSession();
return;
}
using (ITextUndoTransaction undo = CreateUndoTransaction())
{
// insert the closing brace
using (ITextEdit edit = SubjectBuffer.CreateEdit())
{
edit.Insert(closingSnapshotPoint, ClosingBrace.ToString());
if (edit.HasFailedChanges)
{
Debug.Fail("Unable to insert closing brace");
// exit without setting the closing point which will take us off the stack
edit.Cancel();
undo.Cancel();
return;
}
else
{
snapshot = edit.Apply();
}
}
SnapshotPoint beforePoint = beforeTrackingPoint.GetPoint(TextView.TextSnapshot);
// switch from positive to negative tracking so it stays against the closing brace
ClosingPoint = SubjectBuffer.CurrentSnapshot.CreateTrackingPoint(ClosingPoint.GetPoint(snapshot), PointTrackingMode.Negative);
Debug.Assert(ClosingPoint.GetPoint(snapshot).Position > 0 && (new SnapshotSpan(ClosingPoint.GetPoint(snapshot).Subtract(1), 1))
.GetText().Equals(ClosingBrace.ToString()), "The closing point does not match the closing brace character");
// move the caret back between the braces
TextView.Caret.MoveTo(beforePoint);
_session.AfterStart(this, cancellationToken);
undo.Complete();
}
}
public void Start()
{
// this is where the caret should go after the change
SnapshotPoint pos = _textView.Caret.Position.BufferPosition;
ITrackingPoint beforeTrackingPoint = pos.Snapshot.CreateTrackingPoint(pos.Position, PointTrackingMode.Negative);
ITextSnapshot snapshot = _subjectBuffer.CurrentSnapshot;
SnapshotPoint closingSnapshotPoint = _closingPoint.GetPoint(snapshot);
if (closingSnapshotPoint.Position < 1)
{
Debug.Fail("The closing point was not found at the expected position.");
EndSession();
return;
}
SnapshotPoint openingSnapshotPoint = closingSnapshotPoint.Subtract(1);
if (openingSnapshotPoint.GetChar() != OpeningBrace)
{
Debug.Fail("The opening brace was not found at the expected position.");
EndSession();
return;
}
_openingPoint = SubjectBuffer.CurrentSnapshot.CreateTrackingPoint(openingSnapshotPoint, PointTrackingMode.Positive);
using (ITextUndoTransaction undo = CreateUndoTransaction())
{
// insert the closing brace
using (ITextEdit edit = _subjectBuffer.CreateEdit())
{
edit.Insert(closingSnapshotPoint, _closingBrace.ToString(CultureInfo.CurrentCulture));
if (edit.HasFailedChanges)
{
Debug.Fail("Unable to insert closing brace");
// exit without setting the closing point which will take us off the stack
edit.Cancel();
undo.Cancel();
return;
}
else
{
snapshot = edit.Apply();
}
}
SnapshotPoint beforePoint = beforeTrackingPoint.GetPoint(_textView.TextSnapshot);
// switch from positive to negative tracking so it stays against the closing brace
_closingPoint = SubjectBuffer.CurrentSnapshot.CreateTrackingPoint(_closingPoint.GetPoint(snapshot), PointTrackingMode.Negative);
Debug.Assert(_closingPoint.GetPoint(snapshot).Position > 0 && (new SnapshotSpan(_closingPoint.GetPoint(snapshot).Subtract(1), 1))
.GetText().Equals(_closingBrace.ToString(CultureInfo.CurrentCulture), System.StringComparison.Ordinal), "The closing point does not match the closing brace character");
// move the caret back between the braces
_textView.Caret.MoveTo(beforePoint);
if (_context != null)
{
// allow the context to do extra formatting
_context.Start(this);
}
undo.Complete();
}
}