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#! /usr/bin/env python3 |
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import sys |
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from datetime import datetime |
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from enum import Enum |
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from PyQt5.QtCore import pyqtSignal, QTimer, Qt, QObject, QSettings, QModelIndex, QMimeData |
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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 opcua.common.ua_utils import string_to_variant, variant_to_string, val_to_string |
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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.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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raise |
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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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# accept drops |
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self.model.canDropMimeData = self.canDropMimeData |
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self.model.dropMimeData = self.dropMimeData |
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def canDropMimeData(self, mdata, action, row, column, parent): |
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return True |
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def dropMimeData(self, mdata, action, row, column, parent): |
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node = self.uaclient.client.get_node(mdata.text()) |
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self._subscribe(node) |
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return True |
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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, node=None): |
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if node is None: |
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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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text = str(node.get_display_name().Text) |
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row = [QStandardItem(text), 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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raise |
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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.doubleClicked.connect(self.edit_attr) |
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self.model.itemChanged.connect(self.edit_attr_finished) |
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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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186
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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 _check_edit(self, item): |
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""" |
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filter only element we want to edit. |
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take either idx eller item as argument |
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""" |
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if item.column() != 1: |
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return False |
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name_item = self.model.item(item.row(), 0) |
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if name_item.text() != "Value": |
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return False |
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return True |
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def edit_attr(self, idx): |
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if not self._check_edit(idx): |
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return |
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attritem = self.model.item(idx.row(), 0) |
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if attritem.text() == "Value": |
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self.window.ui.attrView.edit(idx) |
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def edit_attr_finished(self, item): |
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if not self._check_edit(item): |
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return |
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try: |
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var = item.data() |
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val = item.text() |
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var = string_to_variant(val, var.VariantType) |
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self.current_node.set_value(var) |
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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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finally: |
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dv = self.current_node.get_data_value() |
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item.setText(variant_to_string(dv.Value)) |
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name_item = self.model.item(item.row(), 0) |
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name_item.child(0, 1).setText(val_to_string(dv.ServerTimestamp)) |
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name_item.child(1, 1).setText(val_to_string(dv.SourceTimestamp)) |
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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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self.current_node = self.window.get_current_node(idx) |
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self.model.clear() |
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if self.current_node: |
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self._show_attrs(self.current_node) |
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self.window.ui.attrView.expandAll() |
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256
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257
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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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263
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self.model.setHorizontalHeaderLabels(['Attribute', 'Value', 'DataType']) |
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for name, dv in attrs: |
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if name == "DataType": |
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if isinstance(dv.Value.Value.Identifier, int) and dv.Value.Value.Identifier < 63: |
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string = ua.DataType_to_VariantType(dv.Value.Value).name |
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elif dv.Value.Value.Identifier in ua.ObjectIdNames: |
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string = ua.ObjectIdNames[dv.Value.Value.Identifier] |
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else: |
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string = dv.Value.Value.to_string() |
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elif name in ("AccessLevel", "UserAccessLevel"): |
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string = ",".join([e.name for e in ua.int_to_AccessLevel(dv.Value.Value)]) |
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274
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elif name in ("WriteMask", "UserWriteMask"): |
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string = ",".join([e.name for e in ua.int_to_WriteMask(dv.Value.Value)]) |
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276
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elif name in ("EventNotifier"): |
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string = ",".join([e.name for e in ua.int_to_EventNotifier(dv.Value.Value)]) |
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else: |
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string = variant_to_string(dv.Value) |
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name_item = QStandardItem(name) |
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281
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vitem = QStandardItem(string) |
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282
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vitem.setData(dv.Value) |
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self.model.appendRow([name_item, vitem, QStandardItem(dv.Value.VariantType.name)]) |
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284
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if name == "Value": |
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285
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string = val_to_string(dv.ServerTimestamp) |
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286
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name_item.appendRow([QStandardItem("Server Timestamp"), QStandardItem(string), QStandardItem(ua.VariantType.DateTime.name)]) |
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287
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string = val_to_string(dv.SourceTimestamp) |
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288
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name_item.appendRow([QStandardItem("Source Timestamp"), QStandardItem(string), QStandardItem(ua.VariantType.DateTime.name)]) |
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289
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290
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291
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292
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class RefsUI(object): |
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293
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294
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def __init__(self, window, uaclient): |
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295
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self.window = window |
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296
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self.uaclient = uaclient |
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297
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self.model = QStandardItemModel() |
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298
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self.window.ui.refView.setModel(self.model) |
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299
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|
|
self.window.ui.refView.horizontalHeader().setSectionResizeMode(1) |
|
300
|
|
|
|
|
301
|
|
|
self.window.ui.treeView.activated.connect(self.show_refs) |
|
302
|
|
|
self.window.ui.treeView.clicked.connect(self.show_refs) |
|
303
|
|
|
|
|
304
|
|
|
def clear(self): |
|
305
|
|
|
self.model.clear() |
|
306
|
|
|
|
|
307
|
|
|
def show_refs(self, idx): |
|
308
|
|
|
node = self.window.get_current_node(idx) |
|
309
|
|
|
self.model.clear() |
|
310
|
|
|
if node: |
|
311
|
|
|
self._show_refs(node) |
|
312
|
|
|
|
|
313
|
|
|
def _show_refs(self, node): |
|
314
|
|
|
self.model.setHorizontalHeaderLabels(['ReferenceType', 'NodeId', "BrowseName", "TypeDefinition"]) |
|
315
|
|
|
try: |
|
316
|
|
|
refs = self.uaclient.get_all_refs(node) |
|
317
|
|
|
except Exception as ex: |
|
318
|
|
|
self.window.show_error(ex) |
|
319
|
|
|
raise |
|
320
|
|
|
for ref in refs: |
|
321
|
|
|
typename = ua.ObjectIdNames[ref.ReferenceTypeId.Identifier] |
|
322
|
|
|
if ref.NodeId.NamespaceIndex == 0 and ref.NodeId.Identifier in ua.ObjectIdNames: |
|
323
|
|
|
nodeid = ua.ObjectIdNames[ref.NodeId.Identifier] |
|
324
|
|
|
else: |
|
325
|
|
|
nodeid = ref.NodeId.to_string() |
|
326
|
|
|
if ref.TypeDefinition.Identifier in ua.ObjectIdNames: |
|
327
|
|
|
typedef = ua.ObjectIdNames[ref.TypeDefinition.Identifier] |
|
328
|
|
|
else: |
|
329
|
|
|
typedef = ref.TypeDefinition.to_string() |
|
330
|
|
|
self.model.appendRow([QStandardItem(typename), |
|
331
|
|
|
QStandardItem(nodeid), |
|
332
|
|
|
QStandardItem(ref.BrowseName.to_string()), |
|
333
|
|
|
QStandardItem(typedef) |
|
334
|
|
|
]) |
|
335
|
|
|
|
|
336
|
|
|
|
|
337
|
|
|
class TreeUI(object): |
|
338
|
|
|
|
|
339
|
|
|
def __init__(self, window, uaclient): |
|
340
|
|
|
self.window = window |
|
341
|
|
|
self.uaclient = uaclient |
|
342
|
|
|
self.model = TreeViewModel(self.uaclient) |
|
343
|
|
|
self.model.clear() # FIXME: do we need this? |
|
344
|
|
|
self.model.error.connect(self.window.show_error) |
|
345
|
|
|
self.window.ui.treeView.setModel(self.model) |
|
346
|
|
|
#self.window.ui.treeView.setUniformRowHeights(True) |
|
347
|
|
|
self.window.ui.treeView.setSelectionBehavior(QAbstractItemView.SelectRows) |
|
348
|
|
|
self.window.ui.treeView.header().setSectionResizeMode(1) |
|
349
|
|
|
self.window.ui.actionCopyPath.triggered.connect(self._copy_path) |
|
350
|
|
|
self.window.ui.actionCopyNodeId.triggered.connect(self._copy_nodeid) |
|
351
|
|
|
# add items to context menu |
|
352
|
|
|
self.window.ui.treeView.addAction(self.window.ui.actionCopyPath) |
|
353
|
|
|
self.window.ui.treeView.addAction(self.window.ui.actionCopyNodeId) |
|
354
|
|
|
|
|
355
|
|
|
def clear(self): |
|
356
|
|
|
self.model.clear() |
|
357
|
|
|
|
|
358
|
|
|
def start(self): |
|
359
|
|
|
self.model.clear() |
|
360
|
|
|
self.model.add_item(*self.uaclient.get_root_node_and_desc()) |
|
361
|
|
|
|
|
362
|
|
|
def _copy_path(self): |
|
363
|
|
|
path = self.get_current_path() |
|
364
|
|
|
path = ",".join(path) |
|
365
|
|
|
QApplication.clipboard().setText(path) |
|
366
|
|
|
|
|
367
|
|
|
def _copy_nodeid(self): |
|
368
|
|
|
node = self.get_current_node() |
|
369
|
|
|
if node: |
|
370
|
|
|
text = node.nodeid.to_string() |
|
371
|
|
|
else: |
|
372
|
|
|
text = "" |
|
373
|
|
|
QApplication.clipboard().setText(text) |
|
374
|
|
|
|
|
375
|
|
|
def get_current_path(self): |
|
376
|
|
|
idx = self.window.ui.treeView.currentIndex() |
|
377
|
|
|
idx = idx.sibling(idx.row(), 0) |
|
378
|
|
|
it = self.model.itemFromIndex(idx) |
|
379
|
|
|
path = [] |
|
380
|
|
|
while it and it.data(): |
|
381
|
|
|
node = it.data() |
|
382
|
|
|
name = node.get_browse_name().to_string() |
|
383
|
|
|
path.insert(0, name) |
|
384
|
|
|
it = it.parent() |
|
385
|
|
|
return path |
|
386
|
|
|
|
|
387
|
|
|
def get_current_node(self, idx=None): |
|
388
|
|
|
if idx is None: |
|
389
|
|
|
idx = self.window.ui.treeView.currentIndex() |
|
390
|
|
|
idx = idx.sibling(idx.row(), 0) |
|
391
|
|
|
it = self.model.itemFromIndex(idx) |
|
392
|
|
|
if not it: |
|
393
|
|
|
return None |
|
394
|
|
|
node = it.data() |
|
395
|
|
|
if not node: |
|
396
|
|
|
print("No node for item:", it, it.text()) |
|
397
|
|
|
return None |
|
398
|
|
|
return node |
|
399
|
|
|
|
|
400
|
|
|
|
|
401
|
|
|
class Window(QMainWindow): |
|
402
|
|
|
|
|
403
|
|
|
def __init__(self): |
|
404
|
|
|
QMainWindow.__init__(self) |
|
405
|
|
|
self.ui = Ui_MainWindow() |
|
406
|
|
|
self.ui.setupUi(self) |
|
407
|
|
|
self.setWindowIcon(QIcon(":/network.svg")) |
|
408
|
|
|
|
|
409
|
|
|
# fix stuff imposible to do in qtdesigner |
|
410
|
|
|
# remove dock titlebar for addressbar |
|
411
|
|
|
w = QWidget() |
|
412
|
|
|
self.ui.addrDockWidget.setTitleBarWidget(w) |
|
413
|
|
|
# tabify some docks |
|
414
|
|
|
self.tabifyDockWidget(self.ui.evDockWidget, self.ui.subDockWidget) |
|
415
|
|
|
self.tabifyDockWidget(self.ui.subDockWidget, self.ui.refDockWidget) |
|
416
|
|
|
|
|
417
|
|
|
# we only show statusbar in case of errors |
|
418
|
|
|
self.ui.statusBar.hide() |
|
419
|
|
|
|
|
420
|
|
|
# load settings, seconds arg is default |
|
421
|
|
|
self.settings = QSettings("FreeOpcUa", "FreeOpcUaClient") |
|
422
|
|
|
self._address_list = self.settings.value("address_list", ["opc.tcp://localhost:4840", "opc.tcp://localhost:53530/OPCUA/SimulationServer/"]) |
|
423
|
|
|
self._address_list_max_count = int(self.settings.value("address_list_max_count", 10)) |
|
424
|
|
|
|
|
425
|
|
|
# init widgets |
|
426
|
|
|
for addr in self._address_list: |
|
427
|
|
|
self.ui.addrComboBox.insertItem(-1, addr) |
|
428
|
|
|
|
|
429
|
|
|
self.uaclient = UaClient() |
|
430
|
|
|
|
|
431
|
|
|
self.tree_ui = TreeUI(self, self.uaclient) |
|
432
|
|
|
self.refs_ui = RefsUI(self, self.uaclient) |
|
433
|
|
|
self.attrs_ui = AttrsUI(self, self.uaclient) |
|
434
|
|
|
self.datachange_ui = DataChangeUI(self, self.uaclient) |
|
435
|
|
|
self.event_ui = EventUI(self, self.uaclient) |
|
436
|
|
|
|
|
437
|
|
|
self.resize(int(self.settings.value("main_window_width", 800)), int(self.settings.value("main_window_height", 600))) |
|
438
|
|
|
self.restoreState(self.settings.value("main_window_state", b"", type="QByteArray")) |
|
439
|
|
|
|
|
440
|
|
|
self.ui.connectButton.clicked.connect(self._connect) |
|
441
|
|
|
self.ui.disconnectButton.clicked.connect(self._disconnect) |
|
442
|
|
|
# self.ui.treeView.expanded.connect(self._fit) |
|
443
|
|
|
|
|
444
|
|
|
self.ui.actionConnect.triggered.connect(self._connect) |
|
445
|
|
|
self.ui.actionDisconnect.triggered.connect(self._disconnect) |
|
446
|
|
|
|
|
447
|
|
|
def show_error(self, msg, level=1): |
|
448
|
|
|
print("showing error: ", msg, level) |
|
449
|
|
|
self.ui.statusBar.show() |
|
450
|
|
|
self.ui.statusBar.setStyleSheet("QStatusBar { background-color : red; color : black; }") |
|
451
|
|
|
self.ui.statusBar.showMessage(str(msg)) |
|
452
|
|
|
QTimer.singleShot(1500, self.ui.statusBar.hide) |
|
453
|
|
|
|
|
454
|
|
|
def get_current_node(self, idx=None): |
|
455
|
|
|
return self.tree_ui.get_current_node(idx) |
|
456
|
|
|
|
|
457
|
|
|
def get_uaclient(self): |
|
458
|
|
|
return self.uaclient |
|
459
|
|
|
|
|
460
|
|
|
def _connect(self): |
|
461
|
|
|
uri = self.ui.addrComboBox.currentText() |
|
462
|
|
|
try: |
|
463
|
|
|
self.uaclient.connect(uri) |
|
464
|
|
|
except Exception as ex: |
|
465
|
|
|
self.show_error(ex) |
|
466
|
|
|
raise |
|
467
|
|
|
|
|
468
|
|
|
self._update_address_list(uri) |
|
469
|
|
|
self.tree_ui.start() |
|
470
|
|
|
|
|
471
|
|
|
def _update_address_list(self, uri): |
|
472
|
|
|
if uri == self._address_list[0]: |
|
473
|
|
|
return |
|
474
|
|
|
if uri in self._address_list: |
|
475
|
|
|
self._address_list.remove(uri) |
|
476
|
|
|
self._address_list.insert(0, uri) |
|
477
|
|
|
if len(self._address_list) > self._address_list_max_count: |
|
478
|
|
|
self._address_list.pop(-1) |
|
479
|
|
|
|
|
480
|
|
|
def _disconnect(self): |
|
481
|
|
|
try: |
|
482
|
|
|
self.uaclient.disconnect() |
|
483
|
|
|
except Exception as ex: |
|
484
|
|
|
self.show_error(ex) |
|
485
|
|
|
raise |
|
486
|
|
|
finally: |
|
487
|
|
|
self.tree_ui.clear() |
|
488
|
|
|
self.refs_ui.clear() |
|
489
|
|
|
self.attrs_ui.clear() |
|
490
|
|
|
self.datachange_ui.clear() |
|
491
|
|
|
self.event_ui.clear() |
|
492
|
|
|
|
|
493
|
|
|
def closeEvent(self, event): |
|
494
|
|
|
self.settings.setValue("main_window_width", self.size().width()) |
|
495
|
|
|
self.settings.setValue("main_window_height", self.size().height()) |
|
496
|
|
|
self.settings.setValue("main_window_state", self.saveState()) |
|
497
|
|
|
self.settings.setValue("address_list", self._address_list) |
|
498
|
|
|
self._disconnect() |
|
499
|
|
|
event.accept() |
|
500
|
|
|
|
|
501
|
|
|
|
|
502
|
|
|
class TreeViewModel(QStandardItemModel): |
|
503
|
|
|
|
|
504
|
|
|
error = pyqtSignal(str) |
|
505
|
|
|
|
|
506
|
|
|
def __init__(self, uaclient): |
|
507
|
|
|
super(TreeViewModel, self).__init__() |
|
508
|
|
|
self.uaclient = uaclient |
|
509
|
|
|
self._fetched = [] |
|
510
|
|
|
|
|
511
|
|
|
def clear(self): |
|
512
|
|
|
QStandardItemModel.clear(self) |
|
513
|
|
|
self._fetched = [] |
|
514
|
|
|
self.setHorizontalHeaderLabels(['DisplayName', "BrowseName", 'NodeId']) |
|
515
|
|
|
|
|
516
|
|
|
def add_item(self, node, desc, parent=None): |
|
517
|
|
|
item = [QStandardItem(desc.DisplayName.to_string()), QStandardItem(desc.BrowseName.to_string()), QStandardItem(desc.NodeId.to_string())] |
|
518
|
|
|
if desc.NodeClass == ua.NodeClass.Object: |
|
519
|
|
|
if desc.TypeDefinition == ua.TwoByteNodeId(ua.ObjectIds.FolderType): |
|
520
|
|
|
item[0].setIcon(QIcon(":/folder.svg")) |
|
521
|
|
|
else: |
|
522
|
|
|
item[0].setIcon(QIcon(":/object.svg")) |
|
523
|
|
|
elif desc.NodeClass == ua.NodeClass.Variable: |
|
524
|
|
|
if desc.TypeDefinition == ua.TwoByteNodeId(ua.ObjectIds.PropertyType): |
|
525
|
|
|
item[0].setIcon(QIcon(":/property.svg")) |
|
526
|
|
|
else: |
|
527
|
|
|
item[0].setIcon(QIcon(":/variable.svg")) |
|
528
|
|
|
elif desc.NodeClass == ua.NodeClass.Method: |
|
529
|
|
|
item[0].setIcon(QIcon(":/method.svg")) |
|
530
|
|
|
|
|
531
|
|
|
item[0].setData(node) |
|
532
|
|
|
if parent: |
|
533
|
|
|
return parent.appendRow(item) |
|
534
|
|
|
else: |
|
535
|
|
|
return self.appendRow(item) |
|
536
|
|
|
|
|
537
|
|
|
def canFetchMore(self, idx): |
|
538
|
|
|
item = self.itemFromIndex(idx) |
|
539
|
|
|
if not item: |
|
540
|
|
|
return True |
|
541
|
|
|
node = item.data() |
|
542
|
|
|
if node not in self._fetched: |
|
543
|
|
|
self._fetched.append(node) |
|
544
|
|
|
return True |
|
545
|
|
|
return False |
|
546
|
|
|
|
|
547
|
|
|
def hasChildren(self, idx): |
|
548
|
|
|
item = self.itemFromIndex(idx) |
|
549
|
|
|
if not item: |
|
550
|
|
|
return True |
|
551
|
|
|
node = item.data() |
|
552
|
|
|
if node in self._fetched: |
|
553
|
|
|
return QStandardItemModel.hasChildren(self, idx) |
|
554
|
|
|
return True |
|
555
|
|
|
|
|
556
|
|
|
def fetchMore(self, idx): |
|
557
|
|
|
parent = self.itemFromIndex(idx) |
|
558
|
|
|
if parent: |
|
559
|
|
|
self._fetchMore(parent) |
|
560
|
|
|
|
|
561
|
|
|
def _fetchMore(self, parent): |
|
562
|
|
|
try: |
|
563
|
|
|
for node, attrs in self.uaclient.get_children(parent.data()).items(): |
|
564
|
|
|
self.add_item(node, attrs, parent) |
|
565
|
|
|
except Exception as ex: |
|
566
|
|
|
self.error.emit(ex) |
|
567
|
|
|
raise |
|
568
|
|
|
|
|
569
|
|
|
#def flags(self, idx): |
|
570
|
|
|
#item = self.itemFromIndex(idx) |
|
571
|
|
|
#flags = QStandardItemModel.flags(self, idx) |
|
572
|
|
|
#if not item: |
|
573
|
|
|
#return flags |
|
574
|
|
|
#node = item.data() |
|
575
|
|
|
#if node and node.get_node_class() == ua.NodeClass.Variable: |
|
576
|
|
|
## FIXME not efficient to query, should be stored in data() |
|
577
|
|
|
##print(1, flags) |
|
578
|
|
|
#return flags | Qt.ItemIsDropEnabled |
|
579
|
|
|
#else: |
|
580
|
|
|
#print(2, flags) |
|
581
|
|
|
#return flags |
|
582
|
|
|
|
|
583
|
|
|
#def mimeTypes(self): |
|
584
|
|
|
#return ["application/vnd.text.list"] |
|
585
|
|
|
|
|
586
|
|
|
def mimeData(self, idxs): |
|
587
|
|
|
mdata = QMimeData() |
|
588
|
|
|
nodes = [] |
|
589
|
|
|
for idx in idxs: |
|
590
|
|
|
item = self.itemFromIndex(idx) |
|
591
|
|
|
if item: |
|
592
|
|
|
node = item.data() |
|
593
|
|
|
if node: |
|
594
|
|
|
nodes.append(node.nodeid.to_string()) |
|
595
|
|
|
mdata.setText(", ".join(nodes)) |
|
596
|
|
|
return mdata |
|
597
|
|
|
|
|
598
|
|
|
|
|
599
|
|
|
def main(): |
|
600
|
|
|
app = QApplication(sys.argv) |
|
601
|
|
|
client = Window() |
|
602
|
|
|
client.show() |
|
603
|
|
|
sys.exit(app.exec_()) |
|
604
|
|
|
|
|
605
|
|
|
|
|
606
|
|
|
if __name__ == "__main__": |
|
607
|
|
|
main() |
|
608
|
|
|
|
FreeOpcUa /
opcua-client-gui
