public int PrevSearch(string searchFragment)
{
if (_textEditor == null || string.IsNullOrEmpty(_textEditor.Text))
{
return(-1);
}
Core.ClearMemory();
var nIndex = -1;
if (FoundPositions.OrderBy(t => t).Any(t => t < LastFoundPosition))
{
nIndex = FoundPositions.OrderBy(t => t).Last(t => t < LastFoundPosition);
LastFoundPosition = nIndex;
}
if (nIndex == -1)
{
return(nIndex);
}
var nLineNumber = _textEditor.Document.GetLineByOffset(nIndex).LineNumber;
var nColNumber = _textEditor.Document.GetLocation(nIndex).Column;
_textEditor.Select(nIndex, searchFragment.Length);
_textEditor.ScrollTo(nLineNumber, nColNumber);
return(LastFoundPosition);
}
public void Reset()
{
FoundPositions.Clear();
LastFoundPosition = -1;
SearchString = "";
Core.ClearMemory();
}
public int NextSearch(string searchFragment)
{
if (_textEditor == null || string.IsNullOrEmpty(_textEditor.Text))
{
return(-1);
}
Core.ClearMemory();
var nIndex = -1;
if (searchFragment != SearchString)
{
FoundPositions.Clear();
var pos = -1;
while (true)
{
if (_textEditor.Text.Length <= pos)
{
break;
}
pos = _textEditor.Text.IndexOf(searchFragment, pos + 1, StringComparison.OrdinalIgnoreCase);
if (pos == -1)
{
break;
}
FoundPositions.Add(pos);
}
if (FoundPositions.Count > 0)
{
nIndex = FoundPositions[0];
LastFoundPosition = nIndex;
}
SearchString = searchFragment;
}
else
{
if (FoundPositions.OrderBy(t => t).Any(t => t > LastFoundPosition))
{
nIndex = FoundPositions.OrderBy(t => t).First(t => t > LastFoundPosition);
LastFoundPosition = nIndex;
}
}
if (nIndex == -1)
{
return(nIndex);
}
var nLineNumber = _textEditor.Document.GetLineByOffset(nIndex).LineNumber;
var nColNumber = _textEditor.Document.GetLocation(nIndex).Column;
_textEditor.Select(nIndex, searchFragment.Length);
_textEditor.ScrollTo(nLineNumber, nColNumber);
return(LastFoundPosition);
}
