laurent@371: #!/usr/bin/python
laurent@371: # -*- coding: utf-8 -*-
laurent@371: 
laurent@371: import os
laurent@371: 
laurent@371: from nevow import rend, appserver, inevow, tags, loaders, athena
laurent@371: import simplejson as json
laurent@371: 
laurent@371: svgfile = '%(svgfile)s'
laurent@371: 
laurent@371: svguiWidgets={}
laurent@371: 
laurent@371: class SvguiWidget:
laurent@371:     
laurent@371:     def __init__(self, classname, back_id, **kwargs):
laurent@371:         self.classname = classname
laurent@371:         self.back_id = back_id
laurent@371:         self.attrs = kwargs.copy()
laurent@371:         self.lastattrs = kwargs.copy()
laurent@371:         self.inhibit = False
laurent@371:         self.changed = False
laurent@371: 
laurent@371:     def setattr(self, attrname, value):
laurent@371:         self.attrs[attrname] = value
laurent@371:         
laurent@371:     def getattr(self, attrname):
laurent@371:         return self.args.get(attrname, None)
laurent@371: 
laurent@371:     def update(self, **kwargs):
laurent@371:         for attrname, value in kwargs.iteritems():
laurent@371:             if self.lastattrs.get(attrname, None) != value:
laurent@371:                 self.changed = True
laurent@371:                 self.attrs[attrname] = value
laurent@371:                 self.lastattrs[attrname] = value
laurent@371:         interface = website.getHMI()
laurent@371:         if interface is not None and self.changed and not self.inhibit:
laurent@371:             self.changed = False
laurent@371:             interface.sendData(self)
laurent@371:         
laurent@371:         return self.attrs["state"]
laurent@371: 
laurent@371: def convert_to_builtin_type(obj):
laurent@371:     # Convert objects to a dictionary of their representation
laurent@371:     d = { '__class__':obj.classname,
laurent@371:           'back_id':obj.back_id,
laurent@371:           'kwargs':json.dumps(obj.attrs),
laurent@371:           }
laurent@371:     return d
laurent@371: 
laurent@371: def dataToSend():
laurent@371:     gadgets = []
laurent@371:     for gadget in svguiWidgets.values():
laurent@371:         gadgets.append(unicode(json.dumps(gadget, default=convert_to_builtin_type, indent=2), 'ascii'))
laurent@371:     return gadgets
laurent@371: 
laurent@371: 
laurent@371: class SVGUI_HMI(athena.LiveElement):
laurent@371:     jsClass = u"LiveSVGPage.LiveSVGWidget"
laurent@371:     
laurent@371:     docFactory = loaders.stan(tags.div(render=tags.directive('liveElement'))[                                    
laurent@371:                                          tags.xml(loaders.xmlfile(os.path.join(WorkingDir, svgfile))),
laurent@371:                                          ])
laurent@371: 
laurent@371:     def sendData(self,data):
laurent@371:         objDefer = self.callRemote('receiveData',unicode(json.dumps(data, default=convert_to_builtin_type, indent=2), 'ascii'))
laurent@371: 
laurent@371:     def initClient(self):
laurent@371:         self.callRemote('init', dataToSend())
laurent@371:     
laurent@371:     def setattr(self, id, attrname, value):
laurent@371:         svguiWidgets[id].setattr(attrname, value)
laurent@371: 
laurent@371: def SVGUI(*args, **kwargs):
laurent@371:     classname, back_id = args
laurent@371:     gad = svguiWidgets.get(back_id, None)
laurent@371:     if gad is None:
laurent@371:         gad = SvguiWidget(classname, back_id, **kwargs)
laurent@371:         svguiWidgets[back_id] = gad
laurent@371:         gadget = [unicode(json.dumps(gad, default=convert_to_builtin_type, indent=2), 'ascii')]
laurent@371:         interface = website.getHMI()
laurent@371:         if interface is not None:
laurent@371:             interface.callRemote('init', gadget)
laurent@371: 
laurent@371:     return gad.update(**kwargs)