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import os |
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from PyQt5.QtCore import pyqtSignal, Qt, QObject, QModelIndex |
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from PyQt5.QtGui import QStandardItemModel, QStandardItem |
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from PyQt5.QtWidgets import QMenu, QAction, QInputDialog, QFileDialog |
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7
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from opcua import ua |
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8
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9
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10
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class RefNodeSetsWidget(QObject): |
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11
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error = pyqtSignal(str) |
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nodeset_added = pyqtSignal(str) |
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nodeset_removed = pyqtSignal(str) |
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def __init__(self, view): |
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QObject.__init__(self, view) |
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self.view = view |
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self.model = QStandardItemModel() |
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self.view.setModel(self.model) |
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self.nodesets = [] |
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self.server_mgr = None |
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self._nodeset_to_delete = None |
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self.view.header().setSectionResizeMode(1) |
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addNodeSetAction = QAction("Add Reference Node Set", self.model) |
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addNodeSetAction.triggered.connect(self.add_nodeset) |
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self.removeNodeSetAction = QAction("Remove Reference Node Set", self.model) |
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self.removeNodeSetAction.triggered.connect(self.remove_nodeset) |
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self.view.setContextMenuPolicy(Qt.CustomContextMenu) |
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self.view.customContextMenuRequested.connect(self.showContextMenu) |
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self._contextMenu = QMenu() |
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self._contextMenu.addAction(addNodeSetAction) |
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self._contextMenu.addAction(self.removeNodeSetAction) |
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def add_nodeset(self): |
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path, ok = QFileDialog.getOpenFileName(self.view, caption="Import OPC UA XML Node Set", filter="XML Files (*.xml *.XML)", directory=".") |
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if not ok: |
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return None |
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name = os.path.basename(path) |
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if name in self.nodesets: |
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return |
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try: |
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self.server_mgr.import_xml(path) |
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except Exception as ex: |
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self.error.emit(ex) |
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raise |
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item = QStandardItem(name) |
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self.model.appendRow([item]) |
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self.nodesets.append(name) |
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self.view.expandAll() |
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self.nodeset_added.emit(path) |
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def get_nodesets(self): |
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return self.nodesets |
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59
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def remove_nodeset(self): |
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idx = self.view.currentIndex() |
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if not idx.isValid() or idx.row() == 0: |
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return |
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64
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item = self.model.itemFromIndex(idx) |
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name = item.text() |
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self.nodesets.remove(name) |
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self.model.removeRow(idx.row()) |
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self.nodeset_removed.emit(name) |
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70
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def set_server_mgr(self, server_mgr): |
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self.server_mgr = server_mgr |
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self.nodesets = [] |
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self.model.clear() |
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self.model.setHorizontalHeaderLabels(['Node Sets']) |
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item = QStandardItem("Opc.Ua.NodeSet2.xml") |
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item.setFlags(Qt.NoItemFlags) |
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self.model.appendRow([item]) |
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self.view.expandAll() |
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def clear(self): |
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self.model.clear() |
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def showContextMenu(self, position): |
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if not self.server_mgr: |
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return |
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idx = self.view.currentIndex() |
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if not idx.isValid() or idx.row() == 0: |
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self.removeNodeSetAction.setEnabled(False) |
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else: |
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self.removeNodeSetAction.setEnabled(True) |
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self._contextMenu.exec_(self.view.viewport().mapToGlobal(position)) |
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FreeOpcUa /
opcua-modeler
