|
1
|
|
|
from PyQt5.QtCore import pyqtSignal, QMimeData, QObject |
|
2
|
|
|
from PyQt5.QtGui import QStandardItemModel, QStandardItem, QIcon |
|
3
|
|
|
from PyQt5.QtWidgets import QApplication, QAbstractItemView |
|
4
|
|
|
|
|
5
|
|
|
from opcua import ua |
|
6
|
|
|
from opcua import Node |
|
7
|
|
|
|
|
8
|
|
|
|
|
9
|
|
|
class TreeWidget(QObject): |
|
10
|
|
|
|
|
11
|
|
|
error = pyqtSignal(str) |
|
12
|
|
|
|
|
13
|
|
|
def __init__(self, view): |
|
14
|
|
|
QObject.__init__(self, view) |
|
15
|
|
|
self.view = view |
|
16
|
|
|
self.model = TreeViewModel() |
|
17
|
|
|
self.model.clear() # FIXME: do we need this? |
|
18
|
|
|
#self.model.error.connect(lambda x: self.error.emit(x)) |
|
19
|
|
|
self.model.error.connect(self.error) |
|
20
|
|
|
self.view.setModel(self.model) |
|
21
|
|
|
#self.view.setUniformRowHeights(True) |
|
22
|
|
|
self.view.setSelectionBehavior(QAbstractItemView.SelectRows) |
|
23
|
|
|
self.view.header().setSectionResizeMode(3) |
|
24
|
|
|
self.view.header().setStretchLastSection(True) |
|
25
|
|
|
#self.view.resizeColumnsToContents() |
|
26
|
|
|
|
|
27
|
|
|
def clear(self): |
|
28
|
|
|
self.model.clear() |
|
29
|
|
|
|
|
30
|
|
|
def set_root_node(self, node): |
|
31
|
|
|
self.model.clear() |
|
32
|
|
|
self.model.set_root_node(node) |
|
33
|
|
|
|
|
34
|
|
|
def copy_path(self): |
|
35
|
|
|
path = self.get_current_path() |
|
36
|
|
|
path_str = ",".join(path) |
|
37
|
|
|
QApplication.clipboard().setText(path_str) |
|
38
|
|
|
|
|
39
|
|
|
def copy_nodeid(self): |
|
40
|
|
|
node = self.get_current_node() |
|
41
|
|
|
text = node.nodeid.to_string() |
|
42
|
|
|
QApplication.clipboard().setText(text) |
|
43
|
|
|
|
|
44
|
|
|
def get_current_path(self): |
|
45
|
|
|
idx = self.view.currentIndex() |
|
46
|
|
|
idx = idx.sibling(idx.row(), 0) |
|
47
|
|
|
it = self.model.itemFromIndex(idx) |
|
48
|
|
|
path = [] |
|
49
|
|
|
while it and it.data(): |
|
50
|
|
|
node = it.data() |
|
51
|
|
|
name = node.get_browse_name().to_string() |
|
52
|
|
|
path.insert(0, name) |
|
53
|
|
|
it = it.parent() |
|
54
|
|
|
return path |
|
55
|
|
|
|
|
56
|
|
|
def update_browse_name_current_item(self, bname): |
|
57
|
|
|
idx = self.view.currentIndex() |
|
58
|
|
|
idx = idx.sibling(idx.row(), 1) |
|
59
|
|
|
it = self.model.itemFromIndex(idx) |
|
60
|
|
|
it.setText(bname.to_string()) |
|
61
|
|
|
|
|
62
|
|
|
def update_display_name_current_item(self, dname): |
|
63
|
|
|
idx = self.view.currentIndex() |
|
64
|
|
|
idx = idx.sibling(idx.row(), 0) |
|
65
|
|
|
it = self.model.itemFromIndex(idx) |
|
66
|
|
|
it.setText(dname.Text.decode()) |
|
67
|
|
|
|
|
68
|
|
|
def reload_current(self): |
|
69
|
|
|
idx = self.view.currentIndex() |
|
70
|
|
|
idx = idx.sibling(idx.row(), 0) |
|
71
|
|
|
it = self.model.itemFromIndex(idx) |
|
72
|
|
|
if not it: |
|
73
|
|
|
return None |
|
74
|
|
|
self.reload(it) |
|
75
|
|
|
|
|
76
|
|
|
def reload(self, item=None): |
|
77
|
|
|
if item is None: |
|
78
|
|
|
item = self.model.item(0, 0) |
|
79
|
|
|
for _ in range(item.rowCount()): |
|
80
|
|
|
child_it = item.child(0, 0) |
|
81
|
|
|
node = child_it.data() |
|
82
|
|
|
if node: |
|
83
|
|
|
self.model.reload(node) |
|
84
|
|
|
item.takeRow(0) |
|
85
|
|
|
node = item.data() |
|
86
|
|
|
if node: |
|
87
|
|
|
self.model.reload(node) |
|
88
|
|
|
|
|
89
|
|
|
def remove_current_item(self): |
|
90
|
|
|
idx = self.view.currentIndex() |
|
91
|
|
|
self.model.removeRow(idx.row(), idx.parent()) |
|
92
|
|
|
|
|
93
|
|
|
def get_current_node(self, idx=None): |
|
94
|
|
|
if idx is None: |
|
95
|
|
|
idx = self.view.currentIndex() |
|
96
|
|
|
idx = idx.sibling(idx.row(), 0) |
|
97
|
|
|
it = self.model.itemFromIndex(idx) |
|
98
|
|
|
if not it: |
|
99
|
|
|
self.error.emit("No node selected") |
|
100
|
|
|
raise RuntimeError("No Node Selected") |
|
101
|
|
|
node = it.data() |
|
102
|
|
|
if not node: |
|
103
|
|
|
self.error.emit("Item does not contain node data, report!") |
|
104
|
|
|
raise RuntimeError("Item does not contain node data, report!") |
|
105
|
|
|
return node |
|
106
|
|
|
|
|
107
|
|
|
|
|
108
|
|
|
class TreeViewModel(QStandardItemModel): |
|
109
|
|
|
|
|
110
|
|
|
error = pyqtSignal(str) |
|
111
|
|
|
|
|
112
|
|
|
def __init__(self): |
|
113
|
|
|
super(TreeViewModel, self).__init__() |
|
114
|
|
|
self._fetched = [] |
|
115
|
|
|
|
|
116
|
|
|
def clear(self): |
|
117
|
|
|
QStandardItemModel.clear(self) |
|
118
|
|
|
self._fetched = [] |
|
119
|
|
|
self.setHorizontalHeaderLabels(['DisplayName', "BrowseName", 'NodeId']) |
|
120
|
|
|
|
|
121
|
|
|
def set_root_node(self, node): |
|
122
|
|
|
desc = self._get_node_desc(node) |
|
123
|
|
|
self.add_item(desc, node=node) |
|
124
|
|
|
|
|
125
|
|
|
def _get_node_desc(self, node): |
|
126
|
|
|
attrs = node.get_attributes([ua.AttributeIds.DisplayName, ua.AttributeIds.BrowseName, ua.AttributeIds.NodeId, ua.AttributeIds.NodeClass]) |
|
127
|
|
|
desc = ua.ReferenceDescription() |
|
128
|
|
|
desc.DisplayName = attrs[0].Value.Value |
|
129
|
|
|
desc.BrowseName = attrs[1].Value.Value |
|
130
|
|
|
desc.NodeId = attrs[2].Value.Value |
|
131
|
|
|
desc.NodeClass = attrs[3].Value.Value |
|
132
|
|
|
desc.TypeDefinition = ua.TwoByteNodeId(ua.ObjectIds.FolderType) |
|
133
|
|
|
return desc |
|
134
|
|
|
|
|
135
|
|
|
def add_item(self, desc, parent=None, node=None): |
|
136
|
|
|
item = [QStandardItem(desc.DisplayName.to_string()), QStandardItem(desc.BrowseName.to_string()), QStandardItem(desc.NodeId.to_string())] |
|
137
|
|
|
if desc.NodeClass == ua.NodeClass.Object: |
|
138
|
|
|
if desc.TypeDefinition == ua.TwoByteNodeId(ua.ObjectIds.FolderType): |
|
139
|
|
|
item[0].setIcon(QIcon(":/folder.svg")) |
|
140
|
|
|
else: |
|
141
|
|
|
item[0].setIcon(QIcon(":/object.svg")) |
|
142
|
|
|
elif desc.NodeClass == ua.NodeClass.Variable: |
|
143
|
|
|
if desc.TypeDefinition == ua.TwoByteNodeId(ua.ObjectIds.PropertyType): |
|
144
|
|
|
item[0].setIcon(QIcon(":/property.svg")) |
|
145
|
|
|
else: |
|
146
|
|
|
item[0].setIcon(QIcon(":/variable.svg")) |
|
147
|
|
|
elif desc.NodeClass == ua.NodeClass.Method: |
|
148
|
|
|
item[0].setIcon(QIcon(":/method.svg")) |
|
149
|
|
|
elif desc.NodeClass == ua.NodeClass.ObjectType: |
|
150
|
|
|
item[0].setIcon(QIcon(":/object_type.svg")) |
|
151
|
|
|
elif desc.NodeClass == ua.NodeClass.VariableType: |
|
152
|
|
|
item[0].setIcon(QIcon(":/variable_type.svg")) |
|
153
|
|
|
elif desc.NodeClass == ua.NodeClass.DataType: |
|
154
|
|
|
item[0].setIcon(QIcon(":/data_type.svg")) |
|
155
|
|
|
elif desc.NodeClass == ua.NodeClass.ReferenceType: |
|
156
|
|
|
item[0].setIcon(QIcon(":/reference_type.svg")) |
|
157
|
|
|
if node: |
|
158
|
|
|
item[0].setData(node) |
|
159
|
|
|
else: |
|
160
|
|
|
parent_node = parent.data() |
|
161
|
|
|
item[0].setData(Node(parent_node.server, desc.NodeId)) |
|
162
|
|
|
if parent: |
|
163
|
|
|
return parent.appendRow(item) |
|
164
|
|
|
else: |
|
165
|
|
|
return self.appendRow(item) |
|
166
|
|
|
|
|
167
|
|
|
def reload(self, node): |
|
168
|
|
|
if node in self._fetched: |
|
169
|
|
|
self._fetched.remove(node) |
|
170
|
|
|
|
|
171
|
|
|
def canFetchMore(self, idx): |
|
172
|
|
|
item = self.itemFromIndex(idx) |
|
173
|
|
|
if not item: |
|
174
|
|
|
return True |
|
175
|
|
|
node = item.data() |
|
176
|
|
|
if node not in self._fetched: |
|
177
|
|
|
self._fetched.append(node) |
|
178
|
|
|
return True |
|
179
|
|
|
return False |
|
180
|
|
|
|
|
181
|
|
|
def hasChildren(self, idx): |
|
182
|
|
|
item = self.itemFromIndex(idx) |
|
183
|
|
|
if not item: |
|
184
|
|
|
return True |
|
185
|
|
|
node = item.data() |
|
186
|
|
|
if node in self._fetched: |
|
187
|
|
|
return QStandardItemModel.hasChildren(self, idx) |
|
188
|
|
|
return True |
|
189
|
|
|
|
|
190
|
|
|
def fetchMore(self, idx): |
|
191
|
|
|
parent = self.itemFromIndex(idx) |
|
192
|
|
|
if parent: |
|
193
|
|
|
self._fetchMore(parent) |
|
194
|
|
|
|
|
195
|
|
|
def _fetchMore(self, parent): |
|
196
|
|
|
try: |
|
197
|
|
|
descs = parent.data().get_children_descriptions() |
|
198
|
|
|
descs.sort(key=lambda x: x.BrowseName) |
|
199
|
|
|
for desc in descs: |
|
200
|
|
|
self.add_item(desc, parent) |
|
201
|
|
|
except Exception as ex: |
|
202
|
|
|
self.error.emit(ex) |
|
203
|
|
|
raise |
|
204
|
|
|
|
|
205
|
|
|
def mimeData(self, idxs): |
|
206
|
|
|
mdata = QMimeData() |
|
207
|
|
|
nodes = [] |
|
208
|
|
|
for idx in idxs: |
|
209
|
|
|
item = self.itemFromIndex(idx) |
|
210
|
|
|
if item: |
|
211
|
|
|
node = item.data() |
|
212
|
|
|
if node: |
|
213
|
|
|
nodes.append(node.nodeid.to_string()) |
|
214
|
|
|
mdata.setText(", ".join(nodes)) |
|
215
|
|
|
return mdata |
|
216
|
|
|
|
|
217
|
|
|
|
|
218
|
|
|
|
FreeOpcUa /
opcua-widgets
