class TagSelecion(QGroupBox):
def __init__(self, parent=None, opc=None):
super(TagSelecion, self).__init__()
self.opc = opc
self.setTitle('Tag Selection')
self.layout = QVBoxLayout(self)
self.button_refresh = QPushButton('Refresh', self)
self.button_refresh.clicked.connect(self._refresh)
self.layout.addWidget(self.button_refresh)
self.button_all = QPushButton('Select All', self)
self.button_all.clicked.connect(self._select_all)
self.layout.addWidget(self.button_all)
self.button_none = QPushButton('Select None', self)
self.button_none.clicked.connect(self._select_none)
self.layout.addWidget(self.button_none)
self.hbox_pattern = QHBoxLayout(self)
self.button_pattern = QPushButton('Toggle Pattern', self)
self.button_pattern.clicked.connect(self._toggle_pattern)
self._next_toggle = 'select'
self.hbox_pattern.addWidget(self.button_pattern)
self.le_pattern = QLineEdit(self)
self.le_pattern.setPlaceholderText('Pattern')
self.hbox_pattern.addWidget(self.le_pattern)
self.layout.addLayout(self.hbox_pattern)
self.label = QLabel('Select Tags', self)
self.layout.addWidget(self.label)
self.listw_tags = QListWidget(self)
self.listw_tags.setSelectionMode(QAbstractItemView.MultiSelection)
self.layout.addWidget(self.listw_tags)
self.setLayout(self.layout)
def selected_tags(self):
return [item.text() for item in self.listw_tags.selectedItems()]
def _refresh(self):
self.tags_all = opcda.tags(self.opc)
self.listw_tags.clear()
self.listw_tags.addItems(self.tags_all)
def _select_all(self):
self.listw_tags.selectAll()
def _select_none(self):
self.listw_tags.clearSelection()
def _toggle_pattern(self):
toggle = self._next_toggle
if toggle is 'select':
self._next_toggle = 'deselect'
elif toggle is 'deselect':
self._next_toggle = 'select'
pattern = self.le_pattern.text().lower()
if len(pattern) is 0:
matched_tags = []
else:
matched_tags = [
tag for tag in self.tags_all if pattern in tag.lower()
]
for tag in matched_tags:
item = self.listw_tags.findItems(tag, Qt.MatchExactly)[0]
if toggle is 'select':
item.setSelected(True)
elif toggle is 'deselect':
item.setSelected(False)
