private void SetSelectionStart(int index, ByInterface method, int textColumnIndex)
{
this.EnsureSelectionArrays(textColumnIndex);
if (index == this.SelectionStart)
{
return;
}
if (method == ByInterface.Manually || method == ByInterface.ByMouse)
{
// We are moving to another location in the text, and hence we should make sure that text styles are checked for
// in a delayed manner and not on each keystroke (like spellchecking).
// They are now found and/or updated before moving away.
TextDocument.FakeFinalizingKey(this._selectionStart[textColumnIndex], textColumnIndex);
}
this._selectionStart[textColumnIndex] = Math.Max(0, Math.Min(TextLength, index));
this._textSegmentSelection[textColumnIndex].Index = this._selectionStart[textColumnIndex];
this.UpdateCaretLocation();
this.Caret.ResetBlink();
if (this.SelectionChanged != null)
{
this.SelectionChanged(this, new SelectionChangedArgs(method, textColumnIndex));
}
}
