connectors/PYRO_dialog.py
author Edouard Tisserant
Tue, 25 Aug 2020 14:32:39 +0200
branchsvghmi
changeset 3036 4930455428df
parent 2609 c8cb60bf6c6a
child 3750 f62625418bff
permissions -rw-r--r--
SVGHMI: JsonTable now use intermediate variables again to address JSON data without duplicating code or referencing. Using intermediate variables also alows to check for availability of data and stop evaluating early if data is missing. Finally added complete roundtrip example to illustrate use of JSonTable to display "alarms" collected in python from changes on PLC boolean variables.
#!/usr/bin/env python
# -*- coding: utf-8 -*-

# See COPYING file for copyrights details.

from __future__ import absolute_import

from itertools import repeat, islice, chain

from connectors.SchemeEditor import SchemeEditor


model = [('host', _("Host:")),
         ('port', _("Port:"))]

# (scheme, model, secure)
models = [("LOCAL", [], False), ("PYRO", model, False), ("PYROS", model, True)]

Schemes = list(zip(*models)[0])

_PerSchemeConf = {sch: (mod, sec) for sch, mod, sec in models}


class PYRO_dialog(SchemeEditor):
    def __init__(self, scheme, *args, **kwargs):
        # ID selector is enabled only on PYROS (secure)
        self.model, self.EnableIDSelector = _PerSchemeConf[scheme]

        SchemeEditor.__init__(self, scheme, *args, **kwargs)

    # pylint: disable=unused-variable
    def SetLoc(self, loc):
        hostport, ID = list(islice(chain(loc.split("#"), repeat("")), 2))
        host, port = list(islice(chain(hostport.split(":"), repeat("")), 2))
        self.SetFields(locals())

    def GetLoc(self):
        if self.model:
            fields = self.GetFields()
            template = "{host}"
            if fields['port']:
                template += ":{port}"
            if self.EnableIDSelector:
                if fields['ID']:
                    template += "#{ID}"

            return template.format(**fields)
        return ''