<?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="FileNotify" type="HMI_INT"/>

<variable name="CurrentPath" type="HMI_STRING" initial="..."/>

<variable name="FileName" type="HMI_STRING"/>

</variables>

<globals>

<xhtml:p><![CDATA[

from twisted.web.resource import Resource

from os import getcwd, listdir

from os.path import dirname, isfile, join

import collections, json

class FilesJsonResource(Resource):

image_cache = {}

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']

path = PLCGlobals.CurrentPath

if path == '...':

PLCGlobals.CurrentPath = path = getcwd()

if len(options) == 1 :

action, = options

if action == 'action_reset':

PLCGlobals.CurrentPath = path = getcwd()

elif len(options) == 2 :

action, sent_path = options

if action == 'onClick[acknowledge]':

if sent_path.endswith('.csv'):

PLCGlobals.FileName = sent_path

else:

PLCGlobals.CurrentPath = path = sent_path

ld = listdir(path)

ld.sort()

if path != '/':

FileList = [

{

'name': '..',

'path': dirname(path),

'type': 'folder',

'status': 'active',

'thumbnail': 'folder.png'

}

]

else:

FileList = []

FileList.extend([

{

'name': f,

'path': join(path, f),

'type': 'folder',

'status': 'active',

'thumbnail': 'folder.png'

}

for f in ld

if not (isfile(join(path, f))

or f.startswith("."))

])

FileList.extend([

{

'name': f,

'path': join(path, f),

'type': 'file',

'status': 'active',

'thumbnail': 'file.png'

}

for f in ld

if isfile(join(path, f))

and f.endswith(".csv")

])

answer = self.renderTable(

FileList, range_feedback, slider_position, visible, extra

)

janswer = json.dumps(answer)

return janswer.encode()

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

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

fFiles = [fl for fl in FileList if extra[0] in fl]

else:

fFiles = FileList[:]

new_range = len(fFiles)

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_files = []

for desc in fFiles[new_position:new_position + new_visible]:

visible_files.append(desc)

return new_range, new_position, visible_files

]]></xhtml:p>

</globals>

<init>

<xhtml:p><![CDATA[

]]></xhtml:p>

</init>

<cleanup>

<xhtml:p><![CDATA[

]]></xhtml:p>

</cleanup>

<start>

<xhtml:p><![CDATA[

AddPathToSVGHMIServers(b"files", FilesJsonResource)

]]></xhtml:p>

</start>

<stop>

<xhtml:p><![CDATA[

]]></xhtml:p>

</stop>

</PyFile>