snippets

	# analyze the structure of a gpb message descriptor and create TreeItems
	# based on that structure
	#def analyze_message(self,descriptor, parent, l=0):
		#if not labels: self.setText(0,descriptor.name)
		#else: for i,l in enumerate(labels): self.setText(i,str(l))

		if not descriptor: return
		if not hasattr(descriptor,'fields_by_number'): return

		global type_map, label_map

		fields = descriptor.fields_by_number
		for key,value in fields.items():

			if not type_map: type_map=create_value_map(value,"TYPE_")
			if not label_map: label_map=create_value_map(value,"LABEL_")

			if value.message_type: typename = value.message_type.name
			elif value.enum_type: typename = value.enum_type.name
			else: typename = type_map[value.type]

			if value.default_value : 
				if value.enum_type:
					default_value = value.enum_type.values_by_number[value.default_value].name
				else:	
					default_value=str(value.default_value)
			else: 
				default_value=""

			labels=[value.name, value.type,typename,label_map[value.label], default_value]
			# recurse
			if ( value.message_type ) :
				TreeItem(value, self,labels)
			else:	
				TreeItem(value,self, labels)
			#child.show_enum(value.enum_type, child, l+4)


				# create a field when it is required and not yet existing
				if not self.gpbitem.HasField(fd.name):
					if fd.type == FD.STRING:
						setattr(self.gpbitem, fd.name, fd.default_value.encode('utf-8'))
					else:	
						setattr(self.gpbitem, fd.name, fd.default_value)