runtime/NevowServer.py
author Edouard Tisserant <edouard.tisserant@gmail.com>
Sat, 30 Jul 2022 10:08:51 +0200
branchwxPython4
changeset 3568 494c90b895ad
parent 3440 3770ded5db5c
child 3703 4b75f1506ea1
permissions -rw-r--r--
IDE: images: regenerate png according to latest changes in SVG
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz runtime.
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#
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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# Copyright (C) 2017: Andrey Skvortsov
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#
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# See COPYING.Runtime file for copyrights details.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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from __future__ import absolute_import
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from __future__ import print_function
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import os
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import collections
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import platform as platform_module
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from zope.interface import implements
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from nevow import appserver, inevow, tags, loaders, athena, url, rend
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from nevow.page import renderer
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from nevow.static import File
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from formless import annotate
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from formless import webform
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from formless import configurable
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from twisted.internet import reactor
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import util.paths as paths
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from runtime.loglevels import LogLevels, LogLevelsDict
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from runtime import MainWorker, GetPLCObjectSingleton
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PAGE_TITLE = 'Beremiz Runtime Web Interface'
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xhtml_header = '''<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
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"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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'''
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WorkingDir = None
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class PLCHMI(athena.LiveElement):
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    initialised = False
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    def HMIinitialised(self, result):
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        self.initialised = True
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    def HMIinitialisation(self):
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        self.HMIinitialised(None)
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class DefaultPLCStartedHMI(PLCHMI):
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    docFactory = loaders.stan(
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        tags.div(render=tags.directive('liveElement'))[
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            tags.h1["PLC IS NOW STARTED"],
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        ])
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class PLCStoppedHMI(PLCHMI):
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    docFactory = loaders.stan(
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        tags.div(render=tags.directive('liveElement'))[
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            tags.h1["PLC IS STOPPED"],
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        ])
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class MainPage(athena.LiveElement):
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    jsClass = u"WebInterface.PLC"
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    docFactory = loaders.stan(
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        tags.invisible[
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            tags.div(render=tags.directive('liveElement'))[
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                tags.div(id='content')[
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                    tags.div(render=tags.directive('PLCElement'))]
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            ],
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            tags.a(href='settings')['Settings']])
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    def __init__(self, *a, **kw):
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        athena.LiveElement.__init__(self, *a, **kw)
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        self.pcl_state = False
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        self.HMI = None
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        self.resetPLCStartedHMI()
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    def setPLCState(self, state):
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        self.pcl_state = state
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        if self.HMI is not None:
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            self.callRemote('updateHMI')
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    def setPLCStartedHMI(self, hmi):
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        self.PLCStartedHMIClass = hmi
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    def resetPLCStartedHMI(self):
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        self.PLCStartedHMIClass = DefaultPLCStartedHMI
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    def getHMI(self):
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        return self.HMI
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    def HMIexec(self, function, *args, **kwargs):
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        if self.HMI is not None:
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            getattr(self.HMI, function, lambda: None)(*args, **kwargs)
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    athena.expose(HMIexec)
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    def resetHMI(self):
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        self.HMI = None
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    def PLCElement(self, ctx, data):
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        return self.getPLCElement()
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    renderer(PLCElement)
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    def getPLCElement(self):
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        self.detachFragmentChildren()
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        if self.pcl_state:
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            f = self.PLCStartedHMIClass()
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        else:
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            f = PLCStoppedHMI()
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        f.setFragmentParent(self)
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        self.HMI = f
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        return f
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    athena.expose(getPLCElement)
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    def detachFragmentChildren(self):
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        for child in self.liveFragmentChildren[:]:
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            child.detach()
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class ConfigurableBindings(configurable.Configurable):
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    def __init__(self):
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        configurable.Configurable.__init__(self, None)
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        self.bindingsNames = []
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        self.infostringcount = 0
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    def getBindingNames(self, ctx):
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        return self.bindingsNames
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    def addInfoString(self, label, value, name=None):
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        if isinstance(value, str):
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            def default(*k):
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                return value
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        else:
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            def default(*k):
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                return value()
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        if name is None:
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            name = "_infostring_" + str(self.infostringcount)
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            self.infostringcount = self.infostringcount + 1
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        def _bind(ctx):
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            return annotate.Property(
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                name,
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                annotate.String(
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                    label=label,
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                    default=default,
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                    immutable=True))
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        setattr(self, 'bind_' + name, _bind)
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        self.bindingsNames.append(name)
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    def addSettings(self, name, desc, fields, btnlabel, callback):
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        def _bind(ctx):
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            return annotate.MethodBinding(
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                'action_' + name,
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                annotate.Method(
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                    arguments=[
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                        annotate.Argument(*field)
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                        for field in fields],
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                    label=desc),
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                action=btnlabel)
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        setattr(self, 'bind_' + name, _bind)
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        setattr(self, 'action_' + name, callback)
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        self.bindingsNames.append(name)
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ConfigurableSettings = ConfigurableBindings()
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def newExtensionSetting(display, token):
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    global extensions_settings_od
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    settings = ConfigurableBindings()
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    extensions_settings_od[token] = (settings, display)
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    return settings
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def removeExtensionSetting(token):
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    global extensions_settings_od
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    extensions_settings_od.pop(token)
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class ISettings(annotate.TypedInterface):
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    platform = annotate.String(label=_("Platform"),
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                               default=platform_module.system() +
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                               " " + platform_module.release(),
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                               immutable=True)
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    # TODO version ?
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    # pylint: disable=no-self-argument
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    def sendLogMessage(
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            ctx=annotate.Context(),
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            level=annotate.Choice(LogLevels,
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                                  required=True,
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                                  label=_("Log message level")),
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            message=annotate.String(label=_("Message text"))):
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        pass
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    sendLogMessage = annotate.autocallable(sendLogMessage,
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                                           label=_(
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                                               "Send a message to the log"),
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                                           action=_("Send"))
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    # pylint: disable=no-self-argument
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    def restartOrRepairPLC(
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            ctx=annotate.Context(),
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            action=annotate.Choice(["Restart", "Repair"],
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                                  required=True,
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                                  label=_("Action"))):
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        pass
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    restartOrRepairPLC = annotate.autocallable(restartOrRepairPLC,
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                                           label=_(
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                                               "Restart or Repair"),
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                                           action=_("Do"))
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customSettingsURLs = {
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}
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extensions_settings_od = collections.OrderedDict()
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class SettingsPage(rend.Page):
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    # We deserve a slash
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    addSlash = True
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    # This makes webform_css url answer some default CSS
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    child_webform_css = webform.defaultCSS
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    child_webinterface_css = File(paths.AbsNeighbourFile(__file__, 'webinterface.css'), 'text/css')
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    implements(ISettings)
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    def __getattr__(self, name):
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        global extensions_settings_od
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        if name.startswith('configurable_'):
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            token = name[13:]
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            def configurable_something(ctx):
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                settings, _display = extensions_settings_od[token]
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                return settings
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            return configurable_something
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        raise AttributeError
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    def extensions_settings(self, context, data):
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        """ Project extensions settings
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        Extensions added to Configuration Tree in IDE have their setting rendered here
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        """
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        global extensions_settings_od
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        res = []
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        for token in extensions_settings_od:
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            _settings, display = extensions_settings_od[token]
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            res += [tags.h2[display], webform.renderForms(token)] 
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        return res
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    docFactory = loaders.stan([tags.html[
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        tags.head[
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            tags.title[_("Beremiz Runtime Settings")],
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            tags.link(rel='stylesheet',
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                      type='text/css',
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                      href=url.here.child("webform_css")),
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            tags.link(rel='stylesheet',
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                      type='text/css',
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                      href=url.here.child("webinterface_css"))
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        ],
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        tags.body[
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            tags.a(href='/')['Back'],
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            tags.h1["Runtime settings:"],
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            webform.renderForms('staticSettings'),
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            tags.h1["Extensions settings:"],
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            webform.renderForms('dynamicSettings'),
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            extensions_settings
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        ]]])
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    def configurable_staticSettings(self, ctx):
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        return configurable.TypedInterfaceConfigurable(self)
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    def configurable_dynamicSettings(self, ctx):
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        """ Runtime Extensions settings
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        Extensions loaded through Beremiz_service -e or optional runtime features render setting forms here
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        """
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        return ConfigurableSettings
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    def sendLogMessage(self, level, message, **kwargs):
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        level = LogLevelsDict[level]
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        GetPLCObjectSingleton().LogMessage(
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            level, "Web form log message: " + message)
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    def restartOrRepairPLC(self, action, **kwargs):
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        if(action == "Repair"):
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            GetPLCObjectSingleton().RepairPLC()
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        else:
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            MainWorker.quit()
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    def locateChild(self, ctx, segments):
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        if segments[0] in customSettingsURLs:
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            return customSettingsURLs[segments[0]](ctx, segments)
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        return super(SettingsPage, self).locateChild(ctx, segments)
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class WebInterface(athena.LivePage):
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    docFactory = loaders.stan([tags.raw(xhtml_header),
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                               tags.html(xmlns="http://www.w3.org/1999/xhtml")[
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                                   tags.head(render=tags.directive('liveglue'))[
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                                       tags.title[PAGE_TITLE],
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                                       tags.link(rel='stylesheet',
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                                                 type='text/css',
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                                                 href=url.here.child("webform_css"))
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                                   ],
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                                   tags.body[
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                                       tags.div[
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                                           tags.div(
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                                               render=tags.directive(
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                                                   "MainPage")),
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                                       ]]]])
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    MainPage = MainPage()
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    PLCHMI = PLCHMI
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    def child_settings(self, context):
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        return SettingsPage()
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    def __init__(self, plcState=False, *a, **kw):
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        super(WebInterface, self).__init__(*a, **kw)
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        self.jsModules.mapping[u'WebInterface'] = paths.AbsNeighbourFile(
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            __file__, 'webinterface.js')
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        self.plcState = plcState
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        self.MainPage.setPLCState(plcState)
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    def getHMI(self):
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        return self.MainPage.getHMI()
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    def LoadHMI(self, hmi, jsmodules):
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        for name, path in jsmodules.iteritems():
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            self.jsModules.mapping[name] = os.path.join(WorkingDir, path)
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        self.MainPage.setPLCStartedHMI(hmi)
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    def UnLoadHMI(self):
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        self.MainPage.resetPLCStartedHMI()
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    def PLCStarted(self):
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        self.plcState = True
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        self.MainPage.setPLCState(True)
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    def PLCStopped(self):
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        self.plcState = False
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        self.MainPage.setPLCState(False)
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    def renderHTTP(self, ctx):
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        """
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        Force content type to fit with SVG
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        """
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        req = ctx.locate(inevow.IRequest)
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        req.setHeader('Content-type', 'application/xhtml+xml')
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        return super(WebInterface, self).renderHTTP(ctx)
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   371
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
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diff changeset
   372
    def render_MainPage(self, ctx, data):
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
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   373
        f = self.MainPage
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
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diff changeset
   374
        f.setFragmentParent(self)
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
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   375
        return ctx.tag[f]
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   376
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
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diff changeset
   377
    def child_(self, ctx):
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
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   378
        self.MainPage.detachFragmentChildren()
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
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diff changeset
   379
        return WebInterface(plcState=self.plcState)
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   380
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   381
    def beforeRender(self, ctx):
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   382
        d = self.notifyOnDisconnect()
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   383
        d.addErrback(self.disconnected)
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   384
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   385
    def disconnected(self, reason):
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   386
        self.MainPage.resetHMI()
1782
5b6ad7a7fd9d clean-up: fix PEP8 E265 block comment should start with '# '
Andrey Skvortsov <andrej.skvortzov@gmail.com>
parents: 1776
diff changeset
   387
        # print reason
5b6ad7a7fd9d clean-up: fix PEP8 E265 block comment should start with '# '
Andrey Skvortsov <andrej.skvortzov@gmail.com>
parents: 1776
diff changeset
   388
        # print "We will be called back when the client disconnects"
1438
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   389
1736
7e61baa047f0 clean-up: fix PEP8 E302 expected 2 blank lines, found 1
Andrey Skvortsov <andrej.skvortzov@gmail.com>
parents: 1682
diff changeset
   390
2311
bef2b4b87370 Beremiz_service now binds both pyro and nevow ports to interface given with '-i' argument.
Edouard Tisserant
parents: 2267
diff changeset
   391
def RegisterWebsite(iface, port):
1438
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   392
    website = WebInterface()
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   393
    site = appserver.NevowSite(website)
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   394
2311
bef2b4b87370 Beremiz_service now binds both pyro and nevow ports to interface given with '-i' argument.
Edouard Tisserant
parents: 2267
diff changeset
   395
    reactor.listenTCP(port, site, interface=iface)
1826
91796f408540 fix usage of python2-only print statement
Andrey Skvortsov <andrej.skvortzov@gmail.com>
parents: 1782
diff changeset
   396
    print(_('HTTP interface port :'), port)
1439
a68cd4253259 Added stub code for runtime WAMP client. Added runtime command line switch to select WAMP url and Nevow web site port. Web port is now fixed, next port number is not tested if bind fails.
Edouard Tisserant
parents: 1438
diff changeset
   397
    return website
1438
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   398
2210
81949104291d Nevow based web interface now show simple Log message sending form for basic runtime, and allow extensions to add their own web settings.
Edouard Tisserant
parents: 2209
diff changeset
   399
1831
56b48961cc68 fix (old-style-class) Old-style class defined error for most parts of
Andrey Skvortsov <andrej.skvortzov@gmail.com>
parents: 1826
diff changeset
   400
class statuslistener(object):
2246
51047284cb0e pep8 on runtime/NevowServer.py
Edouard Tisserant
parents: 2219
diff changeset
   401
1438
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   402
    def __init__(self, site):
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   403
        self.oldstate = None
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   404
        self.site = site
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   405
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   406
    def listen(self, state):
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   407
        if state != self.oldstate:
1453
f31353cac197 Fixed Nevow website startup
Edouard Tisserant
parents: 1439
diff changeset
   408
            action = {'Started': self.site.PLCStarted,
f31353cac197 Fixed Nevow website startup
Edouard Tisserant
parents: 1439
diff changeset
   409
                      'Stopped': self.site.PLCStopped}.get(state, None)
1756
08e4394ff4fb clean-up: fix PEP8 E701 multiple statements on one line (colon)
Andrey Skvortsov <andrej.skvortzov@gmail.com>
parents: 1746
diff changeset
   410
            if action is not None:
08e4394ff4fb clean-up: fix PEP8 E701 multiple statements on one line (colon)
Andrey Skvortsov <andrej.skvortzov@gmail.com>
parents: 1746
diff changeset
   411
                action()
1438
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   412
            self.oldstate = state
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   413
1736
7e61baa047f0 clean-up: fix PEP8 E302 expected 2 blank lines, found 1
Andrey Skvortsov <andrej.skvortzov@gmail.com>
parents: 1682
diff changeset
   414
1438
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   415
def website_statuslistener_factory(site):
19ebe96b41c0 Moved twisted/nevow/athena away from Berermiz_service.py + some minor cleanup
Edouard Tisserant
parents:
diff changeset
   416
    return statuslistener(site).listen
2208
32dcacb67f7a Embrio of setting form, just to test
Edouard Tisserant
parents: 1919
diff changeset
   417
32dcacb67f7a Embrio of setting form, just to test
Edouard Tisserant
parents: 1919
diff changeset
   418