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#! /usr/bin/env python3 |
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import sys |
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import datetime |
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from enum import Enum |
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from PyQt5.QtCore import pyqtSignal, QTimer, Qt, QObject, QSettings, QModelIndex |
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from PyQt5.QtGui import QStandardItemModel, QStandardItem, QIcon |
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from PyQt5.QtWidgets import QMainWindow, QWidget, QApplication, QAbstractItemView, QMenu, QAction |
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from opcua import ua |
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from freeopcuaclient.uaclient import UaClient |
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from freeopcuaclient.mainwindow_ui import Ui_MainWindow |
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from freeopcuaclient import resources |
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class DataChangeHandler(QObject): |
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data_change_fired = pyqtSignal(object, str, str) |
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def datachange_notification(self, node, val, data): |
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if data.monitored_item.Value.SourceTimestamp: |
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dato = data.monitored_item.Value.SourceTimestamp.isoformat() |
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elif data.monitored_item.Value.ServerTimestamp: |
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dato = data.monitored_item.Value.ServerTimestamp.isoformat() |
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else: |
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dato = datetime.datetime.now().isoformat() |
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self.data_change_fired.emit(node, str(val), dato) |
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class EventHandler(QObject): |
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event_fired = pyqtSignal(object) |
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def event_notification(self, event): |
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self.event_fired.emit(event) |
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class EventUI(object): |
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def __init__(self, window, uaclient): |
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self.window = window |
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self.uaclient = uaclient |
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self._handler = EventHandler() |
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self._subscribed_nodes = [] # FIXME: not really needed |
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self.model = QStandardItemModel() |
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self.window.ui.evView.setModel(self.model) |
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self.window.ui.actionSubscribeEvent.triggered.connect(self._subscribe) |
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self.window.ui.actionUnsubscribeEvents.triggered.connect(self._unsubscribe) |
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# context menu |
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self.window.ui.treeView.addAction(self.window.ui.actionSubscribeEvent) |
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self.window.ui.treeView.addAction(self.window.ui.actionUnsubscribeEvents) |
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self._handler.event_fired.connect(self._update_event_model, type=Qt.QueuedConnection) |
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def clear(self): |
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self._subscribed_nodes = [] |
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self.model.clear() |
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def _subscribe(self): |
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node = self.window.get_current_node() |
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if node is None: |
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return |
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if node in self._subscribed_nodes: |
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print("allready subscribed to event for node: ", node) |
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return |
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self.window.ui.evDockWidget.raise_() |
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try: |
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self.uaclient.subscribe_events(node, self._handler) |
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except Exception as ex: |
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self.window.show_error(ex) |
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else: |
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self._subscribed_nodes.append(node) |
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def _unsubscribe(self): |
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node = self.window.get_current_node() |
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if node is None: |
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return |
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self._subscribed_nodes.remove(node) |
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self.uaclient.unsubscribe_events(node) |
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def _update_event_model(self, event): |
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self.model.appendRow([QStandardItem(str(event))]) |
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class DataChangeUI(object): |
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def __init__(self, window, uaclient): |
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self.window = window |
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self.uaclient = uaclient |
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self._subhandler = DataChangeHandler() |
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self._subscribed_nodes = [] |
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self.model = QStandardItemModel() |
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self.window.ui.subView.setModel(self.model) |
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self.window.ui.subView.horizontalHeader().setSectionResizeMode(1) |
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self.window.ui.actionSubscribeDataChange.triggered.connect(self._subscribe) |
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self.window.ui.actionUnsubscribeDataChange.triggered.connect(self._unsubscribe) |
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# populate contextual menu |
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self.window.ui.treeView.addAction(self.window.ui.actionSubscribeDataChange) |
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self.window.ui.treeView.addAction(self.window.ui.actionUnsubscribeDataChange) |
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# handle subscriptions |
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self._subhandler.data_change_fired.connect(self._update_subscription_model, type=Qt.QueuedConnection) |
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def clear(self): |
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self._subscribed_nodes = [] |
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self.model.clear() |
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def _subscribe(self): |
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node = self.window.get_current_node() |
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if node is None: |
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return |
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if node in self._subscribed_nodes: |
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print("allready subscribed to node: ", node) |
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return |
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self.model.setHorizontalHeaderLabels(["DisplayName", "Value", "Timestamp"]) |
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row = [QStandardItem(node.display_name), QStandardItem("No Data yet"), QStandardItem("")] |
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row[0].setData(node) |
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self.model.appendRow(row) |
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self._subscribed_nodes.append(node) |
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self.window.ui.subDockWidget.raise_() |
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try: |
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self.uaclient.subscribe_datachange(node, self._subhandler) |
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except Exception as ex: |
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self.window.show_error(ex) |
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idx = self.model.indexFromItem(row[0]) |
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self.model.takeRow(idx.row()) |
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def _unsubscribe(self): |
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node = self.window.get_current_node() |
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if node is None: |
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return |
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self.uaclient.unsubscribe_datachange(node) |
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self._subscribed_nodes.remove(node) |
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i = 0 |
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while self.model.item(i): |
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item = self.model.item(i) |
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if item.data() == node: |
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self.model.removeRow(i) |
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i += 1 |
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def _update_subscription_model(self, node, value, timestamp): |
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i = 0 |
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while self.model.item(i): |
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item = self.model.item(i) |
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if item.data() == node: |
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it = self.model.item(i, 1) |
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it.setText(value) |
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it_ts = self.model.item(i, 2) |
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it_ts.setText(timestamp) |
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i += 1 |
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class AttrsUI(object): |
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def __init__(self, window, uaclient): |
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self.window = window |
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self.uaclient = uaclient |
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self.model = QStandardItemModel() |
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self.window.ui.attrView.setModel(self.model) |
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self.window.ui.attrView.header().setSectionResizeMode(1) |
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self.window.ui.treeView.activated.connect(self.show_attrs) |
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self.window.ui.treeView.clicked.connect(self.show_attrs) |
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self.window.ui.attrRefreshButton.clicked.connect(self.show_attrs) |
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# Context menu |
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self.window.ui.attrView.setContextMenuPolicy(Qt.CustomContextMenu) |
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self.window.ui.attrView.customContextMenuRequested.connect(self.showContextMenu) |
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copyaction = QAction("&Copy Value", self.model) |
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copyaction.triggered.connect(self._copy_value) |
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self._contextMenu = QMenu() |
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self._contextMenu.addAction(copyaction) |
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def showContextMenu(self, position): |
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item = self.get_current_item() |
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if item: |
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self._contextMenu.exec_(self.window.ui.attrView.mapToGlobal(position)) |
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def get_current_item(self, col_idx=0): |
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idx = self.window.ui.attrView.currentIndex() |
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return self.model.item(idx.row(), col_idx) |
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def _copy_value(self, position): |
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it = self.get_current_item(1) |
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if it: |
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QApplication.clipboard().setText(it.text()) |
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def clear(self): |
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self.model.clear() |
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def show_attrs(self, idx): |
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if not isinstance(idx, QModelIndex): |
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idx = None |
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node = self.window.get_current_node(idx) |
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self.model.clear() |
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if node: |
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self._show_attrs(node) |
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def _show_attrs(self, node): |
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try: |
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attrs = self.uaclient.get_all_attrs(node) |
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except Exception as ex: |
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self.window.show_error(ex) |
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raise |
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self.model.setHorizontalHeaderLabels(['Attribute', 'Value']) |
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for k, v in attrs.items(): |
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if isinstance(v, (ua.NodeId)): |
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v = str(v) |
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elif isinstance(v, (ua.QualifiedName, ua.LocalizedText)): |
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v = v.to_string() |
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elif isinstance(v, Enum): |
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v = repr(v) |
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elif isinstance(v, ua.DataValue): |
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v = repr(v) |
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else: |
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v = str(v) |
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self.model.appendRow([QStandardItem(k), QStandardItem(v)]) |
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class RefsUI(object): |
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def __init__(self, window, uaclient): |
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self.window = window |
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self.uaclient = uaclient |
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self.model = QStandardItemModel() |
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self.window.ui.refView.setModel(self.model) |
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self.window.ui.refView.horizontalHeader().setSectionResizeMode(1) |
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self.window.ui.treeView.activated.connect(self.show_refs) |
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self.window.ui.treeView.clicked.connect(self.show_refs) |
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def clear(self): |
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self.model.clear() |
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def show_refs(self, idx): |
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node = self.window.get_current_node(idx) |
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self.model.clear() |
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if node: |
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self._show_refs(node) |
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242
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def _show_refs(self, node): |
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self.model.setHorizontalHeaderLabels(['ReferenceType', 'NodeId', "BrowseName", "TypeDefinition"]) |
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try: |
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refs = self.uaclient.get_all_refs(node) |
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except Exception as ex: |
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self.window.show_error(ex) |
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raise |
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249
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for ref in refs: |
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self.model.appendRow([QStandardItem(str(ref.ReferenceTypeId)), |
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QStandardItem(str(ref.NodeId)), |
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QStandardItem(str(ref.BrowseName)), |
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QStandardItem(str(ref.TypeDefinition))]) |
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255
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256
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class TreeUI(object): |
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258
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def __init__(self, window, uaclient): |
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self.window = window |
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260
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self.uaclient = uaclient |
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261
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self.model = TreeViewModel(self.uaclient) |
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262
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self.model.clear() # FIXME: do we need this? |
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263
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self.model.error.connect(self.window.show_error) |
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264
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self.window.ui.treeView.setModel(self.model) |
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265
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self.window.ui.treeView.setUniformRowHeights(True) |
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266
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self.window.ui.treeView.setSelectionBehavior(QAbstractItemView.SelectRows) |
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267
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self.window.ui.treeView.header().setSectionResizeMode(1) |
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268
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self.window.ui.actionCopyPath.triggered.connect(self._copy_path) |
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269
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self.window.ui.actionCopyNodeId.triggered.connect(self._copy_nodeid) |
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270
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# add items to context menu |
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271
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self.window.ui.treeView.addAction(self.window.ui.actionCopyPath) |
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272
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self.window.ui.treeView.addAction(self.window.ui.actionCopyNodeId) |
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273
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274
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def clear(self): |
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275
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self.model.clear() |
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276
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277
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def start(self): |
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278
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self.model.clear() |
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279
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self.model.add_item(*self.uaclient.get_root_node_and_desc()) |
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280
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281
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def _copy_path(self): |
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282
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path = self.get_current_path() |
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283
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path = ",".join(path) |
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284
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QApplication.clipboard().setText(path) |
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285
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286
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def _copy_nodeid(self): |
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287
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node = self.get_current_node() |
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288
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if node: |
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289
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text = node.nodeid.to_string() |
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290
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else: |
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291
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text = "" |
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292
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QApplication.clipboard().setText(text) |
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293
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294
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def get_current_path(self): |
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295
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idx = self.window.ui.treeView.currentIndex() |
|
296
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idx = idx.sibling(idx.row(), 0) |
|
297
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it = self.model.itemFromIndex(idx) |
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298
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path = [] |
|
299
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while it and it.data(): |
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300
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node = it.data() |
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301
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name = node.get_browse_name().to_string() |
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302
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path.insert(0, name) |
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303
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it = it.parent() |
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304
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return path |
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305
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306
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|
def get_current_node(self, idx=None): |
|
307
|
|
|
if idx is None: |
|
308
|
|
|
idx = self.window.ui.treeView.currentIndex() |
|
309
|
|
|
idx = idx.sibling(idx.row(), 0) |
|
310
|
|
|
it = self.model.itemFromIndex(idx) |
|
311
|
|
|
if not it: |
|
312
|
|
|
return None |
|
313
|
|
|
node = it.data() |
|
314
|
|
|
if not node: |
|
315
|
|
|
print("No node for item:", it, it.text()) |
|
316
|
|
|
return None |
|
317
|
|
|
node.display_name = it.text() # FIXME: hack |
|
318
|
|
|
return node |
|
319
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|
|
|
|
320
|
|
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|
|
321
|
|
|
class Window(QMainWindow): |
|
322
|
|
|
|
|
323
|
|
|
def __init__(self): |
|
324
|
|
|
QMainWindow.__init__(self) |
|
325
|
|
|
self.ui = Ui_MainWindow() |
|
326
|
|
|
self.ui.setupUi(self) |
|
327
|
|
|
self.setWindowIcon(QIcon(":/network.svg")) |
|
328
|
|
|
|
|
329
|
|
|
# fix stuff imposible to do in qtdesigner |
|
330
|
|
|
# remove dock titlebar for addressbar |
|
331
|
|
|
w = QWidget() |
|
332
|
|
|
self.ui.addrDockWidget.setTitleBarWidget(w) |
|
333
|
|
|
# tabify some docks |
|
334
|
|
|
self.tabifyDockWidget(self.ui.evDockWidget, self.ui.subDockWidget) |
|
335
|
|
|
self.tabifyDockWidget(self.ui.subDockWidget, self.ui.refDockWidget) |
|
336
|
|
|
|
|
337
|
|
|
# we only show statusbar in case of errors |
|
338
|
|
|
self.ui.statusBar.hide() |
|
339
|
|
|
|
|
340
|
|
|
# load settings, seconds arg is default |
|
341
|
|
|
self.settings = QSettings("FreeOpcUa", "FreeOpcUaClient") |
|
342
|
|
|
self._address_list = self.settings.value("address_list", ["opc.tcp://localhost:4840", "opc.tcp://localhost:53530/OPCUA/SimulationServer/"]) |
|
343
|
|
|
self._address_list_max_count = int(self.settings.value("address_list_max_count", 10)) |
|
344
|
|
|
|
|
345
|
|
|
# init widgets |
|
346
|
|
|
for addr in self._address_list: |
|
347
|
|
|
self.ui.addrComboBox.insertItem(-1, addr) |
|
348
|
|
|
|
|
349
|
|
|
self.uaclient = UaClient() |
|
350
|
|
|
|
|
351
|
|
|
self.tree_ui = TreeUI(self, self.uaclient) |
|
352
|
|
|
self.refs_ui = RefsUI(self, self.uaclient) |
|
353
|
|
|
self.attrs_ui = AttrsUI(self, self.uaclient) |
|
354
|
|
|
self.datachange_ui = DataChangeUI(self, self.uaclient) |
|
355
|
|
|
self.event_ui = EventUI(self, self.uaclient) |
|
356
|
|
|
|
|
357
|
|
|
self.resize(int(self.settings.value("main_window_width", 800)), int(self.settings.value("main_window_height", 600))) |
|
358
|
|
|
self.restoreState(self.settings.value("main_window_state", b"")) |
|
359
|
|
|
|
|
360
|
|
|
self.ui.connectButton.clicked.connect(self._connect) |
|
361
|
|
|
self.ui.disconnectButton.clicked.connect(self._disconnect) |
|
362
|
|
|
# self.ui.treeView.expanded.connect(self._fit) |
|
363
|
|
|
|
|
364
|
|
|
self.ui.actionConnect.triggered.connect(self._connect) |
|
365
|
|
|
self.ui.actionDisconnect.triggered.connect(self._disconnect) |
|
366
|
|
|
|
|
367
|
|
|
def show_error(self, msg, level=1): |
|
368
|
|
|
print("showing error: ", msg, level) |
|
369
|
|
|
self.ui.statusBar.show() |
|
370
|
|
|
self.ui.statusBar.setStyleSheet("QStatusBar { background-color : red; color : black; }") |
|
371
|
|
|
self.ui.statusBar.showMessage(str(msg)) |
|
372
|
|
|
QTimer.singleShot(1500, self.ui.statusBar.hide) |
|
373
|
|
|
|
|
374
|
|
|
def get_current_node(self, idx=None): |
|
375
|
|
|
return self.tree_ui.get_current_node(idx) |
|
376
|
|
|
|
|
377
|
|
|
def get_uaclient(self): |
|
378
|
|
|
return self.uaclient |
|
379
|
|
|
|
|
380
|
|
|
def _connect(self): |
|
381
|
|
|
uri = self.ui.addrComboBox.currentText() |
|
382
|
|
|
try: |
|
383
|
|
|
self.uaclient.connect(uri) |
|
384
|
|
|
except Exception as ex: |
|
385
|
|
|
self.show_error(ex) |
|
386
|
|
|
raise |
|
387
|
|
|
|
|
388
|
|
|
self._update_address_list(uri) |
|
389
|
|
|
self.tree_ui.start() |
|
390
|
|
|
|
|
391
|
|
|
def _update_address_list(self, uri): |
|
392
|
|
|
if uri == self._address_list[0]: |
|
393
|
|
|
return |
|
394
|
|
|
if uri in self._address_list: |
|
395
|
|
|
self._address_list.remove(uri) |
|
396
|
|
|
self._address_list.insert(0, uri) |
|
397
|
|
|
if len(self._address_list) > self._address_list_max_count: |
|
398
|
|
|
self._address_list.pop(-1) |
|
399
|
|
|
|
|
400
|
|
|
def _disconnect(self): |
|
401
|
|
|
try: |
|
402
|
|
|
self.uaclient.disconnect() |
|
403
|
|
|
except Exception as ex: |
|
404
|
|
|
self.show_error(ex) |
|
405
|
|
|
raise |
|
406
|
|
|
finally: |
|
407
|
|
|
self.tree_ui.clear() |
|
408
|
|
|
self.refs_ui.clear() |
|
409
|
|
|
self.attrs_ui.clear() |
|
410
|
|
|
self.datachange_ui.clear() |
|
411
|
|
|
self.event_ui.clear() |
|
412
|
|
|
|
|
413
|
|
|
def closeEvent(self, event): |
|
414
|
|
|
self.settings.setValue("main_window_width", self.size().width()) |
|
415
|
|
|
self.settings.setValue("main_window_height", self.size().height()) |
|
416
|
|
|
self.settings.setValue("main_window_state", self.saveState()) |
|
417
|
|
|
self.settings.setValue("address_list", self._address_list) |
|
418
|
|
|
self._disconnect() |
|
419
|
|
|
event.accept() |
|
420
|
|
|
|
|
421
|
|
|
|
|
422
|
|
|
class TreeViewModel(QStandardItemModel): |
|
423
|
|
|
|
|
424
|
|
|
error = pyqtSignal(str) |
|
425
|
|
|
|
|
426
|
|
|
def __init__(self, uaclient): |
|
427
|
|
|
super(TreeViewModel, self).__init__() |
|
428
|
|
|
self.uaclient = uaclient |
|
429
|
|
|
self._fetched = [] |
|
430
|
|
|
|
|
431
|
|
|
def clear(self): |
|
432
|
|
|
QStandardItemModel.clear(self) |
|
433
|
|
|
self._fetched = [] |
|
434
|
|
|
self.setHorizontalHeaderLabels(['DisplayName', "BrowseName", 'NodeId']) |
|
435
|
|
|
|
|
436
|
|
|
def add_item(self, node, desc, parent=None): |
|
437
|
|
|
item = [QStandardItem(desc.DisplayName.to_string()), QStandardItem(desc.BrowseName.to_string()), QStandardItem(desc.NodeId.to_string())] |
|
438
|
|
|
if desc.NodeClass == ua.NodeClass.Object: |
|
439
|
|
|
if desc.TypeDefinition == ua.TwoByteNodeId(ua.ObjectIds.FolderType): |
|
440
|
|
|
item[0].setIcon(QIcon(":/folder.svg")) |
|
441
|
|
|
else: |
|
442
|
|
|
item[0].setIcon(QIcon(":/object.svg")) |
|
443
|
|
|
elif desc.NodeClass == ua.NodeClass.Variable: |
|
444
|
|
|
if desc.TypeDefinition == ua.TwoByteNodeId(ua.ObjectIds.PropertyType): |
|
445
|
|
|
item[0].setIcon(QIcon(":/property.svg")) |
|
446
|
|
|
else: |
|
447
|
|
|
item[0].setIcon(QIcon(":/variable.svg")) |
|
448
|
|
|
elif desc.NodeClass == ua.NodeClass.Method: |
|
449
|
|
|
item[0].setIcon(QIcon(":/method.svg")) |
|
450
|
|
|
|
|
451
|
|
|
item[0].setData(node) |
|
452
|
|
|
if parent: |
|
453
|
|
|
return parent.appendRow(item) |
|
454
|
|
|
else: |
|
455
|
|
|
return self.appendRow(item) |
|
456
|
|
|
|
|
457
|
|
|
def canFetchMore(self, idx): |
|
458
|
|
|
item = self.itemFromIndex(idx) |
|
459
|
|
|
if not item: |
|
460
|
|
|
return True |
|
461
|
|
|
node = item.data() |
|
462
|
|
|
if node not in self._fetched: |
|
463
|
|
|
self._fetched.append(node) |
|
464
|
|
|
return True |
|
465
|
|
|
return False |
|
466
|
|
|
|
|
467
|
|
|
def hasChildren(self, idx): |
|
468
|
|
|
item = self.itemFromIndex(idx) |
|
469
|
|
|
if not item: |
|
470
|
|
|
return True |
|
471
|
|
|
node = item.data() |
|
472
|
|
|
if node in self._fetched: |
|
473
|
|
|
return QStandardItemModel.hasChildren(self, idx) |
|
474
|
|
|
return True |
|
475
|
|
|
|
|
476
|
|
|
def fetchMore(self, idx): |
|
477
|
|
|
parent = self.itemFromIndex(idx) |
|
478
|
|
|
if parent: |
|
479
|
|
|
self._fetchMore(parent) |
|
480
|
|
|
|
|
481
|
|
|
def _fetchMore(self, parent): |
|
482
|
|
|
try: |
|
483
|
|
|
for node, attrs in self.uaclient.get_children(parent.data()): |
|
484
|
|
|
self.add_item(node, attrs, parent) |
|
485
|
|
|
except Exception as ex: |
|
486
|
|
|
self.error.emit(ex) |
|
487
|
|
|
raise |
|
488
|
|
|
|
|
489
|
|
|
|
|
490
|
|
|
def main(): |
|
491
|
|
|
app = QApplication(sys.argv) |
|
492
|
|
|
client = Window() |
|
493
|
|
|
client.show() |
|
494
|
|
|
sys.exit(app.exec_()) |
|
495
|
|
|
|
|
496
|
|
|
|
|
497
|
|
|
if __name__ == "__main__": |
|
498
|
|
|
main() |
|
499
|
|
|
|
FreeOpcUa /
opcua-client-gui
