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from PyQt5.QtCore import QSettings, Qt |
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from PyQt5.QtWidgets import QPushButton, QComboBox, QLabel, QLineEdit, QHBoxLayout, QDialog, QDialogButtonBox, QVBoxLayout, QCheckBox, QFrame |
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from opcua import ua, Node |
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from opcua.common.ua_utils import string_to_variant |
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from opcua.common.ua_utils import data_type_to_variant_type |
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from uawidgets.get_node_dialog import GetNodeButton |
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class NewNodeBaseDialog(QDialog): |
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def __init__(self, parent, title, server): |
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QDialog.__init__(self, parent) |
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self.setWindowTitle(title) |
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self.settings = QSettings() |
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self.server = server |
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self.vlayout = QVBoxLayout(self) |
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self.layout = QHBoxLayout() |
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self.vlayout.addLayout(self.layout) |
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self.layout.addWidget(QLabel("ns:", self)) |
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self.nsComboBox = QComboBox(self) |
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uries = server.get_namespace_array() |
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for uri in uries: |
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self.nsComboBox.addItem(uri) |
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nsidx = int(self.settings.value("last_namespace", len(uries) - 1)) |
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if nsidx > len(uries) - 1: |
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nsidx = len(uries) - 1 |
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self.nsComboBox.setCurrentIndex(nsidx) |
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self.layout.addWidget(self.nsComboBox) |
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self.layout.addWidget(QLabel("Name:", self)) |
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self.nameLabel = QLineEdit(self) |
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self.nameLabel.setMinimumWidth(120) |
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self.nameLabel.setText("NoName") |
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self.layout.addWidget(self.nameLabel) |
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self.nodeidCheckBox = QCheckBox("Auto NodeId", self) |
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self.nodeidCheckBox.stateChanged.connect(self._show_nodeid) |
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self.layout.addWidget(self.nodeidCheckBox) |
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self.nodeidLineEdit = QLineEdit(self) |
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self.nodeidLineEdit.setMinimumWidth(80) |
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self.nodeidLineEdit.setText(self.settings.value("last_nodeid_prefix", "ns={};i=20000".format(nsidx))) |
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self.layout.addWidget(self.nodeidLineEdit) |
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# restore check box state from settings |
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if self.settings.value("last_node_widget_vis", False) == "true": |
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self.nodeidCheckBox.setChecked(False) |
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self.nodeidLineEdit.show() |
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else: |
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self.nodeidCheckBox.setChecked(True) |
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self.nodeidLineEdit.hide() |
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self.buttons = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel, Qt.Horizontal, self) |
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self.vlayout.addWidget(self.buttons) |
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self.buttons.accepted.connect(self.accept) |
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self.buttons.accepted.connect(self._store_state) |
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self.buttons.rejected.connect(self.reject) |
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def _store_state(self): |
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self.settings.setValue("last_namespace", self.nsComboBox.currentIndex()) |
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self.settings.setValue("last_node_widget_vis", not self.nodeidCheckBox.isChecked()) |
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ns_nt = self.nodeidLineEdit.text().split(';') |
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self.settings.setValue("last_nodeid_prefix", ns_nt[0] + ';' + ns_nt[1][0:2]) |
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def _show_nodeid(self, val): |
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if val: |
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self.nodeidLineEdit.hide() |
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else: |
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self.nodeidLineEdit.show() |
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self.adjustSize() |
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def get_nodeid_and_bname(self): |
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ns = self.nsComboBox.currentIndex() |
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name = self.nameLabel.text() |
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bname = ua.QualifiedName(name, ns) |
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if self.nodeidCheckBox.isChecked(): |
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nodeid = ua.NodeId(namespaceidx=ns) |
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else: |
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nodeid = ua.NodeId.from_string(self.nodeidLineEdit.text()) |
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return nodeid, bname |
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def get_args(self): |
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nodeid, bname = self.get_nodeid_and_bname() |
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return nodeid, bname |
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@classmethod |
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def getArgs(cls, parent, title, server, *args, **kwargs): |
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dialog = cls(parent, title, server, *args, **kwargs) |
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result = dialog.exec_() |
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if result == QDialog.Accepted: |
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return dialog.get_args(), True |
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else: |
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return [], False |
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class NewUaObjectDialog(NewNodeBaseDialog): |
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def __init__(self, parent, title, server, base_node_type, current_node_type=None): |
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NewNodeBaseDialog.__init__(self, parent, title, server) |
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if current_node_type is None: |
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current_node_type = base_node_type |
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self.objectTypeButton = GetNodeButton(self, current_node_type, base_node_type) |
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self.layout.addWidget(self.objectTypeButton) |
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def get_args(self): |
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nodeid, bname = self.get_nodeid_and_bname() |
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otype = self.objectTypeButton.get_node() |
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return nodeid, bname, otype |
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class NewUaVariableDialog(NewNodeBaseDialog): |
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def __init__(self, parent, title, server, default_value, dtype): |
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NewNodeBaseDialog.__init__(self, parent, title, server) |
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self.valLineEdit = QLineEdit(self) |
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self.valLineEdit.setText(str(default_value)) |
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self.valLineEdit.setMinimumWidth(100) |
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self.layout.addWidget(self.valLineEdit) |
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base_data_type = server.get_node(ua.ObjectIds.BaseDataType) |
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if dtype is None: |
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current_type = server.get_node(ua.ObjectIds.Float) |
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else: |
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current_type = server.get_node(dtype) |
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self.dataTypeButton = GetNodeButton(self, current_type, base_data_type) |
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self.dataTypeButton.value_changed.connect(self._data_type_changed) |
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self.layout.addWidget(self.dataTypeButton) |
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self._data_type_changed(self.dataTypeButton.get_node()) |
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def _data_type_changed(self, node): |
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if node.nodeid in ( |
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ua.NodeId(ua.ObjectIds.Decimal), |
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ua.NodeId(ua.ObjectIds.Float), |
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ua.NodeId(ua.ObjectIds.Double)): |
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self.valLineEdit.setText(str(0.0)) |
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self.valLineEdit.setEnabled(True) |
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elif node.nodeid in ( |
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ua.NodeId(ua.ObjectIds.UInt16), |
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ua.NodeId(ua.ObjectIds.UInt32), |
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ua.NodeId(ua.ObjectIds.UInt64), |
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ua.NodeId(ua.ObjectIds.Int16), |
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ua.NodeId(ua.ObjectIds.Int32), |
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ua.NodeId(ua.ObjectIds.Int64)): |
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self.valLineEdit.setText(str(0)) |
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self.valLineEdit.setEnabled(True) |
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elif node.nodeid in ( |
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ua.NodeId(ua.ObjectIds.Structure), |
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ua.NodeId(ua.ObjectIds.Enumeration), |
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ua.NodeId(ua.ObjectIds.DiagnosticInfo)): |
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self.valLineEdit.setText("Null") |
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self.valLineEdit.setEnabled(False) |
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else: |
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self.valLineEdit.setText("Null") |
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self.valLineEdit.setEnabled(True) |
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def get_args(self): |
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nodeid, bname = self.get_nodeid_and_bname() |
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dtype = self.dataTypeButton.get_node() |
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vtype = data_type_to_variant_type(dtype) |
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if vtype == ua.VariantType.ExtensionObject: |
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# we currently cannot construct a complex object from a string |
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var = ua.Variant() |
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else: |
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var = string_to_variant(self.valLineEdit.text(), vtype) |
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return nodeid, bname, var, vtype, dtype.nodeid |
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class NewUaMethodDialog(NewNodeBaseDialog): |
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def __init__(self, parent, title, server): |
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NewNodeBaseDialog.__init__(self, parent, title, server) |
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# FIXME current temporary UI is fixed; should be changed to listview or treeview object |
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self.widgets = [] |
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self.inplayout = QVBoxLayout(self) |
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self.vlayout.addLayout(self.inplayout) |
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self.inplayout.addLayout(self.add_input_header()) |
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self.ouplayout = QVBoxLayout(self) |
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self.vlayout.addLayout(self.ouplayout) |
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self.ouplayout.addLayout(self.add_output_header()) |
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def get_args(self): |
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nodeid, bname = self.get_nodeid_and_bname() |
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input_args = [] |
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output_args = [] |
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for row in self.widgets: |
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dtype = row[3].get_node() |
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name = row[1].text() |
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description = row[2].text() |
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if name != "": |
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# FIXME arguments need to be created from dynamaic UA |
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method_arg = ua.Argument() |
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method_arg.Name = name |
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method_arg.DataType = dtype.nodeid |
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method_arg.ValueRank = -1 |
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method_arg.ArrayDimensions = [] |
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method_arg.Description = ua.LocalizedText(description) |
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if row[0] == 'input': |
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input_args.append(method_arg) |
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else: |
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output_args.append(method_arg) |
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# callback is None, this cannot be set from modeler |
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return nodeid, bname, None, input_args, output_args |
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def add_row(self, mode): |
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rowlayout = QHBoxLayout(self) |
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rowlayout.addWidget(QLabel("Arg Name:", self)) |
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argNameLabel = QLineEdit(self) |
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argNameLabel.setText("") |
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rowlayout.addWidget(argNameLabel) |
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rowlayout.addWidget(QLabel("Description:", self)) |
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argDescLabel = QLineEdit(self) |
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argDescLabel.setText("") |
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rowlayout.addWidget(argDescLabel) |
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base_data_type = self.server.get_node(ua.ObjectIds.BaseDataType) |
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dtype_str = self.settings.value("last_datatype", None) |
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if dtype_str is None: |
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current_type = self.server.get_node(ua.ObjectIds.Float) |
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else: |
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current_type = self.server.get_node(dtype_str) |
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dataTypeButton = GetNodeButton(self, current_type, base_data_type) |
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rowlayout.addWidget(dataTypeButton) |
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self.widgets.append([mode, argNameLabel, argDescLabel, dataTypeButton]) |
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return rowlayout |
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def _add_input_row(self): |
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self.inplayout.addLayout(self.add_row("input")) |
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def _add_output_row(self): |
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self.ouplayout.addLayout(self.add_row("output")) |
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def add_input_header(self): |
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header_row = QHBoxLayout(self) |
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header_row.addWidget(QLabel("Input", self)) |
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#header_row.addWidget(self.add_h_line()) |
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button = QPushButton("Add input argument") |
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button.clicked.connect(self._add_input_row) |
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header_row.addWidget(button) |
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return header_row |
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def add_output_header(self): |
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header_row = QHBoxLayout(self) |
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header_row.addWidget(QLabel("Output", self)) |
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#header_row.addWidget(self.add_h_line()) |
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button = QPushButton("Add output argument") |
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header_row.addWidget(button) |
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button.clicked.connect(self._add_output_row) |
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return header_row |
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def add_h_line(self): |
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line = QFrame() |
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line.setFrameShape(QFrame.HLine) |
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line.setFrameShadow(QFrame.Sunken) |
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return line |
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FreeOpcUa /
opcua-widgets
