#!/usr/bin/env python3

import sys, string
import lxml.etree

import plcData

from plcElement import  plcElementXML
from plcModule import plcModule
from plcTag import plcTag

class plcAddOnParameter(plcElementXML):
    """Allen-Bradley PLC RSLogix5000 Add-On Instruction Parameter"""
    # Constructor of the tag from XML element
    def __init__(self, rootElement, parentObj=None):
        plcElementXML.__init__(self, rootElement, parentObj)
        # print( "Created parameter {0}".format(self.name))
        return


class plcAddOnInstruction(plcElementXML):
    """Allen-Bradley PLC RSLogix5000 Add-On Instruction"""

    # Constructor of the tag from XML element
    def __init__(self, rootElement, parentObj=None ):
        plcElementXML.__init__(self, rootElement, parentObj)
        self.parameters = {}

        # print( "Will create parameters for addOn {0} or {1}".format(self.name, rootElement.attrib["Name"] ) )
        self.createParams()
        return

    def createParams(self):
        parElements = self.root.xpath("Parameters/Parameter")
        for parElm in parElements:
            if "Name" in list(parElm.attrib.keys()) :
                # print( "Trying to create parameter {0} for addOn {1}".format(parElm.attrib["Name"], self.name))
                paramObj = plcAddOnParameter( parElm, self )
                self.parameters[paramObj.name] = paramObj

    def getParameters(self):
        return self.parameters

    def getParameter(self, name):
        return self.parameters[name]