import sublime, sublimeplugin

class toggleScrollbarPlugin(sublimeplugin.Plugin):
  def toggleScrollbar(self, view):
    verticalScrollBar = view.options().get('wantVerticalScrollBar')
    if view.size() == view.visibleRegion().size():
      if verticalScrollBar:
        view.options().set('wantVerticalScrollBar', False)
    else:
      if not verticalScrollBar:
        view.options().set('wantVerticalScrollBar', True)
  def onSelectionModified(self, view):
    self.toggleScrollbar(view)
  def onActivated(self, view):
    self.toggleScrollbar(view)