vscreenFocusPageSingleLR method
Implementation
List<int> vscreenFocusPageSingleLR(){
focusPageMode = FocusPageMode.singleLR;
_currentFocusIndex = _currentFocusIndex >= 0 && _currentFocusIndex <= singles.length - 1 ? _currentFocusIndex : 0;
currentPatternVirtualMap?.values.forEach((vscreen)=>vscreen.vscreenFocusPageSingleLR());
return vscreenFocusCurrentIndexList;
}