<?xml version='1.0' encoding='utf-8'?>

<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

<variables>

<variable name="AlarmNotify" type="HMI_INT"/>

<variable name="SendAlarm" type="HMI_INT" onchange="TriggerAlarm"/>

<variable name="AlarmText" type="HMI_STRING" initial="'break time !'"/>

<variable name="AlarmStatus" type="HMI_STRING" initial="'alarm'"/>

</variables>

<globals>

<xhtml:p><![CDATA[

from twisted.web.resource import Resource

import json, time, random, collections

Alarms = []

AlarmIndex = {}

lastid = 0

def TriggerAlarm(changed_var_name):

global Alarms, lastid

new_entry = [time.time(), PLCGlobals.AlarmText, PLCGlobals.AlarmStatus, lastid]

Alarms.append(new_entry)

AlarmIndex[lastid] = new_entry

lastid = lastid + 1

PLCGlobals.AlarmNotify = random.randint(0, 4294967296)

class AlarmJsonResource(Resource):

def render_GET(self, request):

return ''

def render_POST(self, request):

newstr = request.content.getvalue()

newdata = json.loads(newstr)

args = newdata['args']

range_feedback = newdata['range']

slider_position = newdata['position']

visible = newdata['visible']

extra = newdata['extra']

options = newdata['options']

if len(options) == 1 :

action, = options

if action == "action_reset":

del Alarms[:]

AlarmIndex.clear()

elif len(options) == 2 :

action, alarmid = options

if action == "onClick[acknowledge]":

AlarmIndex[int(alarmid)][2] = "ack"

answer = self.renderTable(range_feedback, slider_position, visible, extra)

janswer = json.dumps(answer)

return janswer.encode()

def renderTable(self, old_range, old_position, visible, extra):

if len(extra) > 0 and extra[0] != "":

fAlarms = [alrm for alrm in Alarms if alrm[1].find(extra[0])!=-1]

else:

fAlarms = Alarms[:]

fAlarms.reverse()

new_range = len(fAlarms)

delta = new_range - visible

new_position = 0 if delta <= 0 else delta if old_position > delta else old_position

new_visible = new_range if delta <= 0 else visible

visible_alarms = []

for ts, text, status, alarmid in fAlarms[new_position:new_position + new_visible]:

visible_alarms.append({

"time": time.ctime(ts),

"text": text, # TODO translate text

"status": status,

"alarmid": alarmid

})

return new_range, new_position, visible_alarms

]]></xhtml:p>

</globals>

<init>

<xhtml:p><![CDATA[

]]></xhtml:p>

</init>

<cleanup>

<xhtml:p><![CDATA[

]]></xhtml:p>

</cleanup>

<start>

<xhtml:p><![CDATA[

AddPathToSVGHMIServers(b"alarms", AlarmJsonResource)

]]></xhtml:p>

</start>

<stop>

<xhtml:p><![CDATA[

]]></xhtml:p>

</stop>

</PyFile>