docSwitcherRight.py

from operator import itemgetter

__author__ = "azrafe7"

BUFF_ID = 1
INDEX = 2
VIEW = 3

currView = notepad.getCurrentView()
currBuffId = notepad.getCurrentBufferID()
tabsInView = filter(lambda item: item[VIEW] == currView, notepad.getFiles())
tabsInView.sort(key=itemgetter(INDEX))
nTabs = len(tabsInView)

nextTabIdx = None
for i, tab in enumerate(tabsInView):
    if tab[BUFF_ID] == currBuffId:
        nextTabIdx = tabsInView[(i + 1) % nTabs][INDEX]
        break

notepad.activateIndex(currView, nextTabIdx)