plcopen/InstancesPathCollector.py
author Edouard Tisserant <edouard.tisserant@gmail.com>
Sun, 14 Feb 2021 05:22:30 +0100
branchsvghmi
changeset 3139 1f5ca646ce6e
parent 1953 5736d25bb393
child 3750 f62625418bff
permissions -rw-r--r--
SVGHMI: Add inhibition to widget's apply_hmi_value() so that it does not change variable more frquently than given widget's frequency. This prevents flooding network with many update if browser is producing events at high rate, as for exemple when dragging ScrollBar's cursor.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz.
# See COPYING file for copyrights details.

from __future__ import absolute_import
from plcopen.XSLTModelQuery import XSLTModelQuery


class InstancesPathCollector(XSLTModelQuery):
    """ object for collecting instances path list"""
    def __init__(self, controller):
        self.Instances = []
        XSLTModelQuery.__init__(self,
                                controller,
                                "instances_path.xslt",
                                [("AddInstance", self.AddInstance)])

    def AddInstance(self, context, *args):
        self.Instances.append(args[0][0])

    def Collect(self, root, name, debug):
        self._process_xslt(root, debug, instance_type=name)
        res = self.Instances
        self.Instances = []
        return res