beremiz

fix Traceback if search icon on library panel is clicked, when no

2016-04-22, Andrey Skvortsov
d917c209529d
fix Traceback if search icon on library panel is clicked, when no
category/item is selected in the library.

The problem is here, that if nothing is selected method GetSelection()
returns root item, that doesn't have any python data associated with it.
This issue seems to be wx3.0 specified, because it doesn't exist
with wx2.8 on Windows.
#!/usr/bin/python
# -*- coding: utf-8 -*-
import os
from nevow import rend, appserver, inevow, tags, loaders, athena
import simplejson as json
svgfile = '%(svgfile)s'
svguiWidgets = {}
currentId = 0
def getNewId():
global currentId
currentId += 1
return currentId
class SvguiWidget:
def __init__(self, classname, id, **kwargs):
self.classname = classname
self.id = id
self.attrs = kwargs.copy()
self.inputs = {}
self.outputs = {}
self.inhibit = False
self.changed = False
def setinput(self, attrname, value):
self.inputs[attrname] = value
def getinput(self, attrname, default=None):
if not self.inputs.has_key(attrname):
self.inputs[attrname] = default
return self.inputs[attrname]
def setoutput(self, attrname, value):
if self.outputs.get(attrname) != value:
self.outputs[attrname] = value
self.changed = True
self.RefreshInterface()
def updateoutputs(self, **kwargs):
for attrname, value in kwargs.iteritems():
if self.outputs.get(attrname) != value:
self.outputs[attrname] = value
self.changed = True
self.RefreshInterface()
def RefreshInterface(self):
interface = website.getHMI()
if isinstance(interface, SVGUI_HMI) and self.changed and not self.inhibit:
self.changed = False
d = interface.sendData(self)
if d is not None:
self.inhibit = True
d.addCallback(self.InterfaceRefreshed)
def InterfaceRefreshed(self, result):
self.inhibit = False
if self.changed:
self.RefreshInterface()
def get_object_init_state(obj):
# Convert objects to a dictionary of their representation
attrs = obj.attrs.copy()
attrs.update(obj.inputs)
d = { '__class__': obj.classname,
'id': obj.id,
'kwargs': json.dumps(attrs),
}
return d
def get_object_current_state(obj):
# Convert objects to a dictionary of their representation
d = { '__class__': obj.classname,
'id': obj.id,
'kwargs': json.dumps(obj.outputs),
}
return d
class SVGUI_HMI(website.PLCHMI):
jsClass = u"LiveSVGPage.LiveSVGWidget"
docFactory = loaders.stan(tags.div(render=tags.directive('liveElement'))[
tags.xml(loaders.xmlfile(os.path.join(WorkingDir, svgfile))),
])
def HMIinitialisation(self):
gadgets = []
for gadget in svguiWidgets.values():
gadgets.append(unicode(json.dumps(gadget, default=get_object_init_state, indent=2), 'ascii'))
d = self.callRemote('init', gadgets)
d.addCallback(self.HMIinitialised)
def sendData(self,data):
if self.initialised:
return self.callRemote('receiveData',unicode(json.dumps(data, default=get_object_current_state, indent=2), 'ascii'))
return None
def setattr(self, id, attrname, value):
svguiWidgets[id].setinput(attrname, value)
def createSVGUIControl(*args, **kwargs):
id = getNewId()
gad = SvguiWidget(args[0], id, **kwargs)
svguiWidgets[id] = gad
gadget = [unicode(json.dumps(gad, default=get_object_init_state, indent=2), 'ascii')]
interface = website.getHMI()
if isinstance(interface, SVGUI_HMI) and interface.initialised:
interface.callRemote('init', gadget)
return id
def setAttr(id, attrname, value):
gad = svguiWidgets.get(id, None)
if gad is not None:
gad.setoutput(attrname, value)
def updateAttr(id, **kwargs):
gad = svguiWidgets.get(id, None)
if gad is not None:
gad.updateoutput(**kwargs)
def getAttr(id, attrname, default=None):
gad = svguiWidgets.get(id, None)
if gad is not None:
return gad.getinput(attrname, default)
return default