/// <inheritdoc/>
public override Selection UpdateOnDocumentChange(DocumentChangeEventArgs e)
{
if (e == null)
throw new ArgumentNullException("e");
return Selection.Create(
textArea,
new TextViewPosition(textArea.Document.GetLocation(e.GetNewOffset(startOffset, AnchorMovementType.Default)), start.VisualColumn),
new TextViewPosition(textArea.Document.GetLocation(e.GetNewOffset(endOffset, AnchorMovementType.Default)), end.VisualColumn)
);
}
internal void OnDocumentChanged(DocumentChangeEventArgs e)
{
InvalidateVisualColumn();
if (storedCaretOffset >= 0) {
int newCaretOffset = e.GetNewOffset(storedCaretOffset, AnchorMovementType.Default);
TextDocument document = textArea.Document;
if (document != null) {
// keep visual column
this.Position = new TextViewPosition(document.GetLocation(newCaretOffset), position.VisualColumn);
}
}
storedCaretOffset = -1;
}
/// <inheritdoc/>
public override Selection UpdateOnDocumentChange(DocumentChangeEventArgs e)
{
TextLocation newStartLocation = textArea.Document.GetLocation(e.GetNewOffset(topLeftOffset, AnchorMovementType.AfterInsertion));
TextLocation newEndLocation = textArea.Document.GetLocation(e.GetNewOffset(bottomRightOffset, AnchorMovementType.BeforeInsertion));
return new RectangleSelection(textArea,
new TextViewPosition(newStartLocation, GetVisualColumnFromXPos(newStartLocation.Line, startXPos)),
new TextViewPosition(newEndLocation, GetVisualColumnFromXPos(newEndLocation.Line, endXPos)));
}