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.
from __future__ import absolute_import
import wx
from connectors import ConnectorSchemes, EditorClassFromScheme
from controls.DiscoveryPanel import DiscoveryPanel
class UriEditor(wx.Dialog):
def _init_ctrls(self, parent):
self.UriTypeChoice = wx.Choice(parent=self, choices=self.choices)
self.UriTypeChoice.SetSelection(0)
self.Bind(wx.EVT_CHOICE, self.OnTypeChoice, self.UriTypeChoice)
self.editor_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.ButtonSizer = self.CreateButtonSizer(wx.OK | wx.CANCEL)
def _init_sizers(self):
self.mainSizer = wx.BoxSizer(wx.VERTICAL)
typeSizer = wx.BoxSizer(wx.HORIZONTAL)
typeSizer.Add(wx.StaticText(self, wx.ID_ANY, _("Scheme :")), border=5,
flag=wx.ALIGN_CENTER_VERTICAL | wx.ALL)
typeSizer.Add(self.UriTypeChoice, border=5, flag=wx.ALL)
self.mainSizer.Add(typeSizer)
self.mainSizer.Add(self.editor_sizer, border=5, flag=wx.ALL)
self.mainSizer.Add(self.ButtonSizer, border=5,
flag=wx.BOTTOM | wx.ALIGN_CENTER_HORIZONTAL)
self.SetSizer(self.mainSizer)
self.Layout()
self.Fit()
def __init__(self, parent, ctr, uri=''):
self.ctr = ctr
wx.Dialog.__init__(self,
name='UriEditor', parent=parent,
title=_('URI Editor'))
self.choices = [_("- Search local network -")] + ConnectorSchemes()
self._init_ctrls(parent)
self._init_sizers()
self.scheme = None
self.scheme_editor = None
self.SetURI(uri)
self.CenterOnParent()
def OnTypeChoice(self, event):
index = event.GetSelection()
self._replaceSchemeEditor(event.GetString() if index > 0 else None)
def SetURI(self, uri):
try:
scheme, loc = uri.strip().split("://", 1)
scheme = scheme.upper()
except Exception:
scheme = None
if scheme in ConnectorSchemes():
self.UriTypeChoice.SetStringSelection(scheme)
else:
self.UriTypeChoice.SetSelection(0)
scheme = None
self._replaceSchemeEditor(scheme)
if scheme is not None:
self.scheme_editor.SetLoc(loc)
def GetURI(self):
if self.scheme is None:
return self.scheme_editor.GetURI()
else:
return self.scheme+"://"+self.scheme_editor.GetLoc()
def _replaceSchemeEditor(self, scheme):
self.scheme = scheme
if self.scheme_editor is not None:
self.editor_sizer.Detach(self.scheme_editor)
self.scheme_editor.Destroy()
self.scheme_editor = None
if scheme is not None:
EditorClass = EditorClassFromScheme(scheme)
self.scheme_editor = EditorClass(scheme, self)
else:
# None is for searching local network
self.scheme_editor = DiscoveryPanel(self)
self.editor_sizer.Add(self.scheme_editor)
self.scheme_editor.Refresh()
self.editor_sizer.Layout()
self.mainSizer.Layout()
self.Fit()