private void _lookIn_TextChanged(object sender, EventArgs e)
{
NiFindOptions options;
if (_lookIn.Text == Labels.CurrentDocument)
options = NiFindOptions.Document;
else if (_lookIn.Text == Labels.AllOpenDocuments)
options = NiFindOptions.OpenDocument;
else if (_lookIn.Text == Labels.EntireProject)
options = NiFindOptions.Project;
else
options = NiFindOptions.Files;
_findManager.Options = (_findManager.Options & ~NiFindOptions.TargetMask) | options;
_includeSubFolders.Enabled = _findManager.Options.HasFlag(NiFindOptions.Files);
}