def showPopup(self):
# type: () -> None
"""
Reimplemented from QComboBox.showPopup
Popup up a customized view and filter edit line.
Note
----
The .popup(), .lineEdit(), .completer() of the base class are not used.
"""
if self.__popup is not None:
# We have user entered state that cannot be disturbed
# (entered filter text, scroll offset, ...)
return # pragma: no cover
if self.count() == 0:
return
opt = QStyleOptionComboBox()
self.initStyleOption(opt)
popup = QListView(
uniformItemSizes=True,
horizontalScrollBarPolicy=Qt.ScrollBarAlwaysOff,
verticalScrollBarPolicy=Qt.ScrollBarAsNeeded,
iconSize=self.iconSize(),
)
popup.setFocusProxy(self.__searchline)
popup.setParent(self, Qt.Popup | Qt.FramelessWindowHint)
popup.setItemDelegate(_ComboBoxListDelegate(popup))
proxy = QSortFilterProxyModel(
popup, filterCaseSensitivity=Qt.CaseInsensitive
)
proxy.setFilterKeyColumn(self.modelColumn())
proxy.setSourceModel(self.model())
popup.setModel(proxy)
root = proxy.mapFromSource(self.rootModelIndex())
popup.setRootIndex(root)
self.__popup = popup
self.__proxy = proxy
self.__searchline.setText("")
self.__searchline.setPlaceholderText("Filter...")
self.__searchline.setVisible(True)
self.__searchline.textEdited.connect(proxy.setFilterFixedString)
style = self.style() # type: QStyle
popuprect_origin = style.subControlRect(
QStyle.CC_ComboBox, opt, QStyle.SC_ComboBoxListBoxPopup, self
) # type: QRect
popuprect_origin = QRect(
self.mapToGlobal(popuprect_origin.topLeft()),
popuprect_origin.size()
)
editrect = style.subControlRect(
QStyle.CC_ComboBox, opt, QStyle.SC_ComboBoxEditField, self
) # type: QRect
self.__searchline.setGeometry(editrect)
desktop = QApplication.desktop()
screenrect = desktop.availableGeometry(self) # type: QRect
# get the height for the view
listrect = QRect()
for i in range(min(proxy.rowCount(root), self.maxVisibleItems())):
index = proxy.index(i, self.modelColumn(), root)
if index.isValid():
listrect = listrect.united(popup.visualRect(index))
if listrect.height() >= screenrect.height():
break
window = popup.window() # type: QWidget
window.ensurePolished()
if window.layout() is not None:
window.layout().activate()
else:
QApplication.sendEvent(window, QEvent(QEvent.LayoutRequest))
margins = qwidget_margin_within(popup.viewport(), window)
height = (listrect.height() + 2 * popup.spacing() +
margins.top() + margins.bottom())
popup_size = (QSize(popuprect_origin.width(), height)
.expandedTo(window.minimumSize())
.boundedTo(window.maximumSize())
.boundedTo(screenrect.size()))
popuprect = QRect(popuprect_origin.bottomLeft(), popup_size)
popuprect = dropdown_popup_geometry(
popuprect, popuprect_origin, screenrect)
popup.setGeometry(popuprect)
current = proxy.mapFromSource(
self.model().index(self.currentIndex(), self.modelColumn(),
self.rootModelIndex()))
popup.setCurrentIndex(current)
popup.scrollTo(current, QAbstractItemView.EnsureVisible)
popup.show()
popup.setFocus(Qt.PopupFocusReason)
popup.installEventFilter(self)
popup.viewport().installEventFilter(self)
popup.viewport().setMouseTracking(True)
self.update()
self.__popupTimer.restart()
class SelectionSetsWidget(QFrame):
"""
Widget for managing multiple stored item selections
"""
selectionModified = Signal(bool)
def __init__(self, parent):
QFrame.__init__(self, parent)
self.setContentsMargins(0, 0, 0, 0)
layout = QVBoxLayout()
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(1)
self._setNameLineEdit = QLineEdit(self)
layout.addWidget(self._setNameLineEdit)
self._setListView = QListView(self)
self._listModel = QStandardItemModel(self)
self._proxyModel = QSortFilterProxyModel(self)
self._proxyModel.setSourceModel(self._listModel)
self._setListView.setModel(self._proxyModel)
self._setListView.setItemDelegate(ListItemDelegate(self))
self._setNameLineEdit.textChanged.connect(
self._proxyModel.setFilterFixedString)
self._completer = QCompleter(self._listModel, self)
self._setNameLineEdit.setCompleter(self._completer)
self._listModel.itemChanged.connect(self._onSetNameChange)
layout.addWidget(self._setListView)
buttonLayout = QHBoxLayout()
self._addAction = QAction("+", self, toolTip="Add a new sort key")
self._updateAction = QAction("Update",
self,
toolTip="Update/save current selection")
self._removeAction = QAction("\u2212",
self,
toolTip="Remove selected sort key.")
self._addToolButton = QToolButton(self)
self._updateToolButton = QToolButton(self)
self._removeToolButton = QToolButton(self)
self._updateToolButton.setSizePolicy(QSizePolicy.MinimumExpanding,
QSizePolicy.Minimum)
self._addToolButton.setDefaultAction(self._addAction)
self._updateToolButton.setDefaultAction(self._updateAction)
self._removeToolButton.setDefaultAction(self._removeAction)
buttonLayout.addWidget(self._addToolButton)
buttonLayout.addWidget(self._updateToolButton)
buttonLayout.addWidget(self._removeToolButton)
layout.addLayout(buttonLayout)
self.setLayout(layout)
self._addAction.triggered.connect(self.addCurrentSelection)
self._updateAction.triggered.connect(self.updateSelectedSelection)
self._removeAction.triggered.connect(self.removeSelectedSelection)
self._setListView.selectionModel().selectionChanged.connect(
self._onListViewSelectionChanged)
self.selectionModel = None
self._selections = []
def sizeHint(self):
size = QFrame.sizeHint(self)
return QSize(size.width(), 150)
def _onSelectionChanged(self, selected, deselected):
self.setSelectionModified(True)
def _onListViewSelectionChanged(self, selected, deselected):
try:
index = self._setListView.selectedIndexes()[0]
except IndexError:
return
self.commitSelection(self._proxyModel.mapToSource(index).row())
def _onSetNameChange(self, item):
self.selections[item.row()].name = str(item.text())
def _setButtonStates(self, val):
self._updateToolButton.setEnabled(val)
def setSelectionModel(self, selectionModel):
if self.selectionModel:
self.selectionModel.selectionChanged.disconnect(
self._onSelectionChanged)
self.selectionModel = selectionModel
self.selectionModel.selectionChanged.connect(self._onSelectionChanged)
def addCurrentSelection(self):
item = self.addSelection(
SelectionByKey(self.selectionModel.selection(),
name="New selection",
key=(1, 2, 3, 10)))
index = self._proxyModel.mapFromSource(item.index())
self._setListView.setCurrentIndex(index)
self._setListView.edit(index)
self.setSelectionModified(False)
def removeSelectedSelection(self):
i = self._proxyModel.mapToSource(
self._setListView.currentIndex()).row()
self._listModel.takeRow(i)
del self.selections[i]
def updateCurentSelection(self):
i = self._proxyModel.mapToSource(
self._setListView.selectedIndex()).row()
self.selections[i].setSelection(self.selectionModel.selection())
self.setSelectionModified(False)
def addSelection(self, selection, name=""):
self._selections.append(selection)
item = QStandardItem(selection.name)
item.setFlags(item.flags() ^ Qt.ItemIsDropEnabled)
self._listModel.appendRow(item)
self.setSelectionModified(False)
return item
def updateSelectedSelection(self):
i = self._proxyModel.mapToSource(
self._setListView.currentIndex()).row()
self.selections[i].setSelection(self.selectionModel.selection())
self.setSelectionModified(False)
def setSelectionModified(self, val):
self._selectionModified = val
self._setButtonStates(val)
self.selectionModified.emit(bool(val))
def commitSelection(self, index):
selection = self.selections[index]
selection.select(self.selectionModel)
def setSelections(self, selections):
self._listModel.clear()
for selection in selections:
self.addSelection(selection)
def selections(self):
return self._selections
selections = property(selections, setSelections)
class OWPythonScript(widget.OWWidget):
name = "Python Script"
description = "Write a Python script and run it on input data or models."
icon = "icons/PythonScript.svg"
priority = 3150
inputs = [
("in_data", Orange.data.Table, "setExampleTable", widget.Default),
# ("in_distance", Orange.misc.SymMatrix, "setDistanceMatrix",
# widget.Default),
("in_learner", Learner, "setLearner", widget.Default),
("in_classifier", Model, "setClassifier", widget.Default),
("in_object", object, "setObject")
]
outputs = [
(
"out_data",
Orange.data.Table,
),
# ("out_distance", Orange.misc.SymMatrix, ),
(
"out_learner",
Learner,
),
("out_classifier", Model, widget.Dynamic),
("out_object", object, widget.Dynamic)
]
libraryListSource = \
Setting([Script("Hello world", "print('Hello world')\n")])
currentScriptIndex = Setting(0)
splitterState = Setting(None)
auto_execute = Setting(False)
def __init__(self):
super().__init__()
self.in_data = None
self.in_distance = None
self.in_learner = None
self.in_classifier = None
self.in_object = None
self.auto_execute = False
for s in self.libraryListSource:
s.flags = 0
self._cachedDocuments = {}
self.infoBox = gui.vBox(self.controlArea, 'Info')
gui.label(
self.infoBox, self,
"<p>Execute python script.</p><p>Input variables:<ul><li> " + \
"<li>".join(t.name for t in self.inputs) + \
"</ul></p><p>Output variables:<ul><li>" + \
"<li>".join(t.name for t in self.outputs) + \
"</ul></p>"
)
self.libraryList = itemmodels.PyListModel(
[],
self,
flags=Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable)
self.libraryList.wrap(self.libraryListSource)
self.controlBox = gui.vBox(self.controlArea, 'Library')
self.controlBox.layout().setSpacing(1)
self.libraryView = QListView(
editTriggers=QListView.DoubleClicked | QListView.EditKeyPressed,
sizePolicy=QSizePolicy(QSizePolicy.Ignored, QSizePolicy.Preferred))
self.libraryView.setItemDelegate(ScriptItemDelegate(self))
self.libraryView.setModel(self.libraryList)
self.libraryView.selectionModel().selectionChanged.connect(
self.onSelectedScriptChanged)
self.controlBox.layout().addWidget(self.libraryView)
w = itemmodels.ModelActionsWidget()
self.addNewScriptAction = action = QAction("+", self)
action.setToolTip("Add a new script to the library")
action.triggered.connect(self.onAddScript)
w.addAction(action)
action = QAction(unicodedata.lookup("MINUS SIGN"), self)
action.setToolTip("Remove script from library")
action.triggered.connect(self.onRemoveScript)
w.addAction(action)
action = QAction("Update", self)
action.setToolTip("Save changes in the editor to library")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.triggered.connect(self.commitChangesToLibrary)
w.addAction(action)
action = QAction("More", self, toolTip="More actions")
new_from_file = QAction("Import Script from File", self)
save_to_file = QAction("Save Selected Script to File", self)
save_to_file.setShortcut(QKeySequence(QKeySequence.SaveAs))
new_from_file.triggered.connect(self.onAddScriptFromFile)
save_to_file.triggered.connect(self.saveScript)
menu = QMenu(w)
menu.addAction(new_from_file)
menu.addAction(save_to_file)
action.setMenu(menu)
button = w.addAction(action)
button.setPopupMode(QToolButton.InstantPopup)
w.layout().setSpacing(1)
self.controlBox.layout().addWidget(w)
self.execute_button = gui.auto_commit(self.controlArea,
self,
"auto_execute",
"Execute",
auto_label="Auto Execute")
self.splitCanvas = QSplitter(Qt.Vertical, self.mainArea)
self.mainArea.layout().addWidget(self.splitCanvas)
self.defaultFont = defaultFont = \
"Monaco" if sys.platform == "darwin" else "Courier"
self.textBox = gui.vBox(self, 'Python Script')
self.splitCanvas.addWidget(self.textBox)
self.text = PythonScriptEditor(self)
self.textBox.layout().addWidget(self.text)
self.textBox.setAlignment(Qt.AlignVCenter)
self.text.setTabStopWidth(4)
self.text.modificationChanged[bool].connect(self.onModificationChanged)
self.saveAction = action = QAction("&Save", self.text)
action.setToolTip("Save script to file")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.setShortcutContext(Qt.WidgetWithChildrenShortcut)
action.triggered.connect(self.saveScript)
self.consoleBox = gui.vBox(self, 'Console')
self.splitCanvas.addWidget(self.consoleBox)
self.console = PythonConsole({}, self)
self.consoleBox.layout().addWidget(self.console)
self.console.document().setDefaultFont(QFont(defaultFont))
self.consoleBox.setAlignment(Qt.AlignBottom)
self.console.setTabStopWidth(4)
select_row(self.libraryView, self.currentScriptIndex)
self.splitCanvas.setSizes([2, 1])
if self.splitterState is not None:
self.splitCanvas.restoreState(QByteArray(self.splitterState))
self.splitCanvas.splitterMoved[int, int].connect(self.onSpliterMoved)
self.controlArea.layout().addStretch(1)
self.resize(800, 600)
def setExampleTable(self, et):
self.in_data = et
def setDistanceMatrix(self, dm):
self.in_distance = dm
def setLearner(self, learner):
self.in_learner = learner
def setClassifier(self, classifier):
self.in_classifier = classifier
def setObject(self, obj):
self.in_object = obj
def handleNewSignals(self):
self.unconditional_commit()
def selectedScriptIndex(self):
rows = self.libraryView.selectionModel().selectedRows()
if rows:
return [i.row() for i in rows][0]
else:
return None
def setSelectedScript(self, index):
select_row(self.libraryView, index)
def onAddScript(self, *args):
self.libraryList.append(Script("New script", "", 0))
self.setSelectedScript(len(self.libraryList) - 1)
def onAddScriptFromFile(self, *args):
filename, _ = QFileDialog.getOpenFileName(
self, 'Open Python Script', os.path.expanduser("~/"),
'Python files (*.py)\nAll files(*.*)')
if filename:
name = os.path.basename(filename)
# TODO: use `tokenize.detect_encoding`
with open(filename, encoding="utf-8") as f:
contents = f.read()
self.libraryList.append(Script(name, contents, 0, filename))
self.setSelectedScript(len(self.libraryList) - 1)
def onRemoveScript(self, *args):
index = self.selectedScriptIndex()
if index is not None:
del self.libraryList[index]
select_row(self.libraryView, max(index - 1, 0))
def onSaveScriptToFile(self, *args):
index = self.selectedScriptIndex()
if index is not None:
self.saveScript()
def onSelectedScriptChanged(self, selected, deselected):
index = [i.row() for i in selected.indexes()]
if index:
current = index[0]
if current >= len(self.libraryList):
self.addNewScriptAction.trigger()
return
self.text.setDocument(self.documentForScript(current))
self.currentScriptIndex = current
def documentForScript(self, script=0):
if type(script) != Script:
script = self.libraryList[script]
if script not in self._cachedDocuments:
doc = QTextDocument(self)
doc.setDocumentLayout(QPlainTextDocumentLayout(doc))
doc.setPlainText(script.script)
doc.setDefaultFont(QFont(self.defaultFont))
doc.highlighter = PythonSyntaxHighlighter(doc)
doc.modificationChanged[bool].connect(self.onModificationChanged)
doc.setModified(False)
self._cachedDocuments[script] = doc
return self._cachedDocuments[script]
def commitChangesToLibrary(self, *args):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].script = self.text.toPlainText()
self.text.document().setModified(False)
self.libraryList.emitDataChanged(index)
def onModificationChanged(self, modified):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].flags = Script.Modified if modified else 0
self.libraryList.emitDataChanged(index)
def onSpliterMoved(self, pos, ind):
self.splitterState = bytes(self.splitCanvas.saveState())
def updateSelecetdScriptState(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
self.libraryList[index] = Script(script.name,
self.text.toPlainText(), 0)
def saveScript(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
filename = script.filename
else:
filename = os.path.expanduser("~/")
filename, _ = QFileDialog.getSaveFileName(
self, 'Save Python Script', filename,
'Python files (*.py)\nAll files(*.*)')
if filename:
fn = ""
head, tail = os.path.splitext(filename)
if not tail:
fn = head + ".py"
else:
fn = filename
f = open(fn, 'w')
f.write(self.text.toPlainText())
f.close()
def initial_locals_state(self):
d = dict([(i.name, getattr(self, i.name, None)) for i in self.inputs])
d.update(dict([(o.name, None) for o in self.outputs]))
return d
def commit(self):
self._script = str(self.text.toPlainText())
lcls = self.initial_locals_state()
lcls["_script"] = str(self.text.toPlainText())
self.console.updateLocals(lcls)
self.console.write("\nRunning script:\n")
self.console.push("exec(_script)")
self.console.new_prompt(sys.ps1)
for out in self.outputs:
signal = out.name
self.send(signal, self.console.locals.get(signal, None))
class OWFeatureConstructor(OWWidget):
name = "Feature Constructor"
description = "Construct new features (data columns) from a set of " \
"existing features in the input data set."
icon = "icons/FeatureConstructor.svg"
class Inputs:
data = Input("Data", Orange.data.Table)
class Outputs:
data = Output("Data", Orange.data.Table)
want_main_area = False
settingsHandler = FeatureConstructorHandler()
descriptors = ContextSetting([])
currentIndex = ContextSetting(-1)
EDITORS = [
(ContinuousDescriptor, ContinuousFeatureEditor),
(DiscreteDescriptor, DiscreteFeatureEditor),
(StringDescriptor, StringFeatureEditor)
]
class Error(OWWidget.Error):
more_values_needed = Msg("Categorical feature {} needs more values.")
invalid_expressions = Msg("Invalid expressions: {}.")
def __init__(self):
super().__init__()
self.data = None
self.editors = {}
box = gui.vBox(self.controlArea, "Variable Definitions")
toplayout = QHBoxLayout()
toplayout.setContentsMargins(0, 0, 0, 0)
box.layout().addLayout(toplayout)
self.editorstack = QStackedWidget(
sizePolicy=QSizePolicy(QSizePolicy.MinimumExpanding,
QSizePolicy.MinimumExpanding)
)
for descclass, editorclass in self.EDITORS:
editor = editorclass()
editor.featureChanged.connect(self._on_modified)
self.editors[descclass] = editor
self.editorstack.addWidget(editor)
self.editorstack.setEnabled(False)
buttonlayout = QVBoxLayout(spacing=10)
buttonlayout.setContentsMargins(0, 0, 0, 0)
self.addbutton = QPushButton(
"New", toolTip="Create a new variable",
minimumWidth=120,
shortcut=QKeySequence.New
)
def unique_name(fmt, reserved):
candidates = (fmt.format(i) for i in count(1))
return next(c for c in candidates if c not in reserved)
def reserved_names():
varnames = []
if self.data is not None:
varnames = [var.name for var in
self.data.domain.variables + self.data.domain.metas]
varnames += [desc.name for desc in self.featuremodel]
return set(varnames)
def generate_newname(fmt):
return unique_name(fmt, reserved_names())
menu = QMenu(self.addbutton)
cont = menu.addAction("Numeric")
cont.triggered.connect(
lambda: self.addFeature(
ContinuousDescriptor(generate_newname("X{}"), "", 3))
)
disc = menu.addAction("Categorical")
disc.triggered.connect(
lambda: self.addFeature(
DiscreteDescriptor(generate_newname("D{}"), "",
("A", "B"), -1, False))
)
string = menu.addAction("Text")
string.triggered.connect(
lambda: self.addFeature(
StringDescriptor(generate_newname("S{}"), ""))
)
menu.addSeparator()
self.duplicateaction = menu.addAction("Duplicate Selected Variable")
self.duplicateaction.triggered.connect(self.duplicateFeature)
self.duplicateaction.setEnabled(False)
self.addbutton.setMenu(menu)
self.removebutton = QPushButton(
"Remove", toolTip="Remove selected variable",
minimumWidth=120,
shortcut=QKeySequence.Delete
)
self.removebutton.clicked.connect(self.removeSelectedFeature)
buttonlayout.addWidget(self.addbutton)
buttonlayout.addWidget(self.removebutton)
buttonlayout.addStretch(10)
toplayout.addLayout(buttonlayout, 0)
toplayout.addWidget(self.editorstack, 10)
# Layout for the list view
layout = QVBoxLayout(spacing=1, margin=0)
self.featuremodel = DescriptorModel(parent=self)
self.featureview = QListView(
minimumWidth=200,
sizePolicy=QSizePolicy(QSizePolicy.Minimum,
QSizePolicy.MinimumExpanding)
)
self.featureview.setItemDelegate(FeatureItemDelegate(self))
self.featureview.setModel(self.featuremodel)
self.featureview.selectionModel().selectionChanged.connect(
self._on_selectedVariableChanged
)
layout.addWidget(self.featureview)
box.layout().addLayout(layout, 1)
box = gui.hBox(self.controlArea)
gui.rubber(box)
commit = gui.button(box, self, "Send", callback=self.apply,
default=True)
commit.setMinimumWidth(180)
def setCurrentIndex(self, index):
index = min(index, len(self.featuremodel) - 1)
self.currentIndex = index
if index >= 0:
itemmodels.select_row(self.featureview, index)
desc = self.featuremodel[min(index, len(self.featuremodel) - 1)]
editor = self.editors[type(desc)]
self.editorstack.setCurrentWidget(editor)
editor.setEditorData(desc, self.data.domain if self.data else None)
self.editorstack.setEnabled(index >= 0)
self.duplicateaction.setEnabled(index >= 0)
self.removebutton.setEnabled(index >= 0)
def _on_selectedVariableChanged(self, selected, *_):
index = selected_row(self.featureview)
if index is not None:
self.setCurrentIndex(index)
else:
self.setCurrentIndex(-1)
def _on_modified(self):
if self.currentIndex >= 0:
editor = self.editorstack.currentWidget()
self.featuremodel[self.currentIndex] = editor.editorData()
self.descriptors = list(self.featuremodel)
def setDescriptors(self, descriptors):
"""
Set a list of variable descriptors to edit.
"""
self.descriptors = descriptors
self.featuremodel[:] = list(self.descriptors)
@Inputs.data
@check_sql_input
def setData(self, data=None):
"""Set the input dataset."""
self.closeContext()
self.data = data
if self.data is not None:
descriptors = list(self.descriptors)
currindex = self.currentIndex
self.descriptors = []
self.currentIndex = -1
self.openContext(data)
if descriptors != self.descriptors or \
self.currentIndex != currindex:
# disconnect from the selection model while reseting the model
selmodel = self.featureview.selectionModel()
selmodel.selectionChanged.disconnect(
self._on_selectedVariableChanged)
self.featuremodel[:] = list(self.descriptors)
self.setCurrentIndex(self.currentIndex)
selmodel.selectionChanged.connect(
self._on_selectedVariableChanged)
self.editorstack.setEnabled(self.currentIndex >= 0)
def handleNewSignals(self):
if self.data is not None:
self.apply()
else:
self.Outputs.data.send(None)
def addFeature(self, descriptor):
self.featuremodel.append(descriptor)
self.setCurrentIndex(len(self.featuremodel) - 1)
editor = self.editorstack.currentWidget()
editor.nameedit.setFocus()
editor.nameedit.selectAll()
def removeFeature(self, index):
del self.featuremodel[index]
index = selected_row(self.featureview)
if index is not None:
self.setCurrentIndex(index)
elif index is None and len(self.featuremodel) > 0:
# Deleting the last item clears selection
self.setCurrentIndex(len(self.featuremodel) - 1)
def removeSelectedFeature(self):
if self.currentIndex >= 0:
self.removeFeature(self.currentIndex)
def duplicateFeature(self):
desc = self.featuremodel[self.currentIndex]
self.addFeature(copy.deepcopy(desc))
def check_attrs_values(self, attr, data):
for i in range(len(data)):
for var in attr:
if not math.isnan(data[i, var]) \
and int(data[i, var]) >= len(var.values):
return var.name
return None
def _validate_descriptors(self, desc):
def validate(source):
try:
return validate_exp(ast.parse(source, mode="eval"))
except Exception:
return False
final = []
invalid = []
for d in desc:
if validate(d.expression):
final.append(d)
else:
final.append(d._replace(expression=""))
invalid.append(d)
if invalid:
self.Error.invalid_expressions(", ".join(s.name for s in invalid))
return final
def apply(self):
self.Error.clear()
if self.data is None:
return
desc = list(self.featuremodel)
desc = self._validate_descriptors(desc)
source_vars = self.data.domain.variables + self.data.domain.metas
new_variables = construct_variables(desc, source_vars)
attrs = [var for var in new_variables if var.is_primitive()]
metas = [var for var in new_variables if not var.is_primitive()]
new_domain = Orange.data.Domain(
self.data.domain.attributes + tuple(attrs),
self.data.domain.class_vars,
metas=self.data.domain.metas + tuple(metas)
)
try:
data = self.data.transform(new_domain)
except Exception as err:
log = logging.getLogger(__name__)
log.error("", exc_info=True)
self.error("".join(format_exception_only(type(err), err)).rstrip())
return
disc_attrs_not_ok = self.check_attrs_values(
[var for var in attrs if var.is_discrete], data)
if disc_attrs_not_ok:
self.Error.more_values_needed(disc_attrs_not_ok)
return
self.Outputs.data.send(data)
def send_report(self):
items = OrderedDict()
for feature in self.featuremodel:
if isinstance(feature, DiscreteDescriptor):
items[feature.name] = "{} (categorical with values {}{})".format(
feature.expression, feature.values,
"; ordered" * feature.ordered)
elif isinstance(feature, ContinuousDescriptor):
items[feature.name] = "{} (numeric)".format(feature.expression)
else:
items[feature.name] = "{} (text)".format(feature.expression)
self.report_items(
report.plural("Constructed feature{s}", len(items)), items)
class OWDiscretize(widget.OWWidget):
name = "Discretize"
description = "Discretize the numeric data features."
icon = "icons/Discretize.svg"
inputs = [InputSignal("Data", Orange.data.Table, "set_data",
doc="Input data table")]
outputs = [OutputSignal("Data", Orange.data.Table,
doc="Table with discretized features")]
settingsHandler = settings.DomainContextHandler()
saved_var_states = settings.ContextSetting({})
default_method = settings.Setting(2)
default_k = settings.Setting(3)
autosend = settings.Setting(True)
#: Discretization methods
Default, Leave, MDL, EqualFreq, EqualWidth, Remove, Custom = range(7)
want_main_area = False
resizing_enabled = False
def __init__(self):
super().__init__()
#: input data
self.data = None
#: Current variable discretization state
self.var_state = {}
#: Saved variable discretization settings (context setting)
self.saved_var_states = {}
self.method = 0
self.k = 5
box = gui.vBox(self.controlArea, self.tr("Default Discretization"))
self.default_bbox = rbox = gui.radioButtons(
box, self, "default_method", callback=self._default_disc_changed)
rb = gui.hBox(rbox)
self.left = gui.vBox(rb)
right = gui.vBox(rb)
rb.layout().setStretch(0, 1)
rb.layout().setStretch(1, 1)
options = self.options = [
self.tr("Default"),
self.tr("Leave numeric"),
self.tr("Entropy-MDL discretization"),
self.tr("Equal-frequency discretization"),
self.tr("Equal-width discretization"),
self.tr("Remove numeric variables")
]
for opt in options[1:]:
t = gui.appendRadioButton(rbox, opt)
# This condition is ugly, but it keeps the same order of
# options for backward compatibility of saved schemata
[right, self.left][opt.startswith("Equal")].layout().addWidget(t)
gui.separator(right, 18, 18)
def _intbox(widget, attr, callback):
box = gui.indentedBox(widget)
s = gui.spin(
box, self, attr, minv=2, maxv=10, label="Num. of intervals:",
callback=callback)
s.setMaximumWidth(60)
s.setAlignment(Qt.AlignRight)
gui.rubber(s.box)
return box.box
self.k_general = _intbox(self.left, "default_k",
self._default_disc_changed)
self.k_general.layout().setContentsMargins(0, 0, 0, 0)
vlayout = QHBoxLayout()
box = gui.widgetBox(
self.controlArea, "Individual Attribute Settings",
orientation=vlayout, spacing=8
)
# List view with all attributes
self.varview = QListView(selectionMode=QListView.ExtendedSelection)
self.varview.setItemDelegate(DiscDelegate())
self.varmodel = itemmodels.VariableListModel()
self.varview.setModel(self.varmodel)
self.varview.selectionModel().selectionChanged.connect(
self._var_selection_changed
)
vlayout.addWidget(self.varview)
# Controls for individual attr settings
self.bbox = controlbox = gui.radioButtons(
box, self, "method", callback=self._disc_method_changed
)
vlayout.addWidget(controlbox)
for opt in options[:5]:
gui.appendRadioButton(controlbox, opt)
self.k_specific = _intbox(controlbox, "k", self._disc_method_changed)
gui.appendRadioButton(controlbox, "Remove attribute")
gui.rubber(controlbox)
controlbox.setEnabled(False)
self.controlbox = controlbox
box = gui.auto_commit(
self.controlArea, self, "autosend", "Apply",
orientation=Qt.Horizontal,
checkbox_label="Apply automatically")
box.layout().insertSpacing(0, 20)
box.layout().insertWidget(0, self.report_button)
self._update_spin_positions()
def set_data(self, data):
self.closeContext()
self.data = data
if self.data is not None:
self._initialize(data)
self.openContext(data)
# Restore the per variable discretization settings
self._restore(self.saved_var_states)
# Complete the induction of cut points
self._update_points()
else:
self._clear()
self.unconditional_commit()
def _initialize(self, data):
# Initialize the default variable states for new data.
self.class_var = data.domain.class_var
cvars = [var for var in data.domain if var.is_continuous]
self.varmodel[:] = cvars
class_var = data.domain.class_var
has_disc_class = data.domain.has_discrete_class
self.default_bbox.buttons[self.MDL - 1].setEnabled(has_disc_class)
self.bbox.buttons[self.MDL].setEnabled(has_disc_class)
# If the newly disabled MDL button is checked then change it
if not has_disc_class and self.default_method == self.MDL - 1:
self.default_method = 0
if not has_disc_class and self.method == self.MDL:
self.method = 0
# Reset (initialize) the variable discretization states.
self._reset()
def _restore(self, saved_state):
# Restore variable states from a saved_state dictionary.
def_method = self._current_default_method()
for i, var in enumerate(self.varmodel):
key = variable_key(var)
if key in saved_state:
state = saved_state[key]
if isinstance(state.method, Default):
state = DState(Default(def_method), None, None)
self._set_var_state(i, state)
def _reset(self):
# restore the individual variable settings back to defaults.
def_method = self._current_default_method()
self.var_state = {}
for i in range(len(self.varmodel)):
state = DState(Default(def_method), None, None)
self._set_var_state(i, state)
def _set_var_state(self, index, state):
# set the state of variable at `index` to `state`.
self.var_state[index] = state
self.varmodel.setData(self.varmodel.index(index), state, Qt.UserRole)
def _clear(self):
self.data = None
self.varmodel[:] = []
self.var_state = {}
self.saved_var_states = {}
self.default_bbox.buttons[self.MDL - 1].setEnabled(True)
self.bbox.buttons[self.MDL].setEnabled(True)
def _update_points(self):
"""
Update the induced cut points.
"""
if self.data is None or not len(self.data):
return
def induce_cuts(method, data, var):
dvar = _dispatch[type(method)](method, data, var)
if dvar is None:
# removed
return [], None
elif dvar is var:
# no transformation took place
return None, var
elif is_discretized(dvar):
return dvar.compute_value.points, dvar
else:
assert False
for i, var in enumerate(self.varmodel):
state = self.var_state[i]
if state.points is None and state.disc_var is None:
points, dvar = induce_cuts(state.method, self.data, var)
new_state = state._replace(points=points, disc_var=dvar)
self._set_var_state(i, new_state)
def _method_index(self, method):
return METHODS.index((type(method), ))
def _current_default_method(self):
method = self.default_method + 1
k = self.default_k
if method == OWDiscretize.Leave:
def_method = Leave()
elif method == OWDiscretize.MDL:
def_method = MDL()
elif method == OWDiscretize.EqualFreq:
def_method = EqualFreq(k)
elif method == OWDiscretize.EqualWidth:
def_method = EqualWidth(k)
elif method == OWDiscretize.Remove:
def_method = Remove()
else:
assert False
return def_method
def _current_method(self):
if self.method == OWDiscretize.Default:
method = Default(self._current_default_method())
elif self.method == OWDiscretize.Leave:
method = Leave()
elif self.method == OWDiscretize.MDL:
method = MDL()
elif self.method == OWDiscretize.EqualFreq:
method = EqualFreq(self.k)
elif self.method == OWDiscretize.EqualWidth:
method = EqualWidth(self.k)
elif self.method == OWDiscretize.Remove:
method = Remove()
elif self.method == OWDiscretize.Custom:
method = Custom(self.cutpoints)
else:
assert False
return method
def _update_spin_positions(self):
self.k_general.setDisabled(self.default_method not in [2, 3])
if self.default_method == 2:
self.left.layout().insertWidget(1, self.k_general)
elif self.default_method == 3:
self.left.layout().insertWidget(2, self.k_general)
self.k_specific.setDisabled(self.method not in [3, 4])
if self.method == 3:
self.bbox.layout().insertWidget(4, self.k_specific)
elif self.method == 4:
self.bbox.layout().insertWidget(5, self.k_specific)
def _default_disc_changed(self):
self._update_spin_positions()
method = self._current_default_method()
state = DState(Default(method), None, None)
for i, _ in enumerate(self.varmodel):
if isinstance(self.var_state[i].method, Default):
self._set_var_state(i, state)
self._update_points()
self.commit()
def _disc_method_changed(self):
self._update_spin_positions()
indices = self.selected_indices()
method = self._current_method()
state = DState(method, None, None)
for idx in indices:
self._set_var_state(idx, state)
self._update_points()
self.commit()
def _var_selection_changed(self, *args):
indices = self.selected_indices()
# set of all methods for the current selection
methods = [self.var_state[i].method for i in indices]
mset = set(methods)
self.controlbox.setEnabled(len(mset) > 0)
if len(mset) == 1:
method = mset.pop()
self.method = self._method_index(method)
if isinstance(method, (EqualFreq, EqualWidth)):
self.k = method.k
elif isinstance(method, Custom):
self.cutpoints = method.points
else:
# deselect the current button
self.method = -1
bg = self.controlbox.group
button_group_reset(bg)
self._update_spin_positions()
def selected_indices(self):
rows = self.varview.selectionModel().selectedRows()
return [index.row() for index in rows]
def discretized_var(self, source):
index = list(self.varmodel).index(source)
state = self.var_state[index]
if state.disc_var is None:
return None
elif state.disc_var is source:
return source
elif state.points == []:
return None
else:
return state.disc_var
def discretized_domain(self):
"""
Return the current effective discretized domain.
"""
if self.data is None:
return None
def disc_var(source):
if source and source.is_continuous:
return self.discretized_var(source)
else:
return source
attributes = [disc_var(v) for v in self.data.domain.attributes]
attributes = [v for v in attributes if v is not None]
class_var = disc_var(self.data.domain.class_var)
domain = Orange.data.Domain(
attributes, class_var,
metas=self.data.domain.metas
)
return domain
def commit(self):
output = None
if self.data is not None and len(self.data):
domain = self.discretized_domain()
output = self.data.from_table(domain, self.data)
self.send("Data", output)
def storeSpecificSettings(self):
super().storeSpecificSettings()
self.saved_var_states = {
variable_key(var):
self.var_state[i]._replace(points=None, disc_var=None)
for i, var in enumerate(self.varmodel)
}
def send_report(self):
self.report_items((
("Default method", self.options[self.default_method + 1]),))
if self.varmodel:
self.report_items("Thresholds", [
(var.name,
DiscDelegate.cutsText(self.var_state[i]) or "leave numeric")
for i, var in enumerate(self.varmodel)])
class OWImpute(OWWidget):
name = "Impute"
description = "Impute missing values in the data table."
icon = "icons/Impute.svg"
priority = 2130
class Inputs:
data = Input("Data", Orange.data.Table)
learner = Input("Learner", Learner)
class Outputs:
data = Output("Data", Orange.data.Table)
class Error(OWWidget.Error):
imputation_failed = Msg("Imputation failed for '{}'")
model_based_imputer_sparse = Msg("Model based imputer does not work for sparse data")
settingsHandler = settings.DomainContextHandler()
_default_method_index = settings.Setting(int(Method.Leave)) # type: int
# Per-variable imputation state (synced in storeSpecificSettings)
_variable_imputation_state = settings.ContextSetting({}) # type: VariableState
autocommit = settings.Setting(True)
want_main_area = False
resizing_enabled = False
def __init__(self):
super().__init__()
self.data = None # type: Optional[Orange.data.Table]
self.learner = None # type: Optional[Learner]
self.default_learner = SimpleTreeLearner()
self.modified = False
self.executor = qconcurrent.ThreadExecutor(self)
self.__task = None
main_layout = QVBoxLayout()
main_layout.setContentsMargins(10, 10, 10, 10)
self.controlArea.layout().addLayout(main_layout)
box = QGroupBox(title=self.tr("Default Method"), flat=False)
box_layout = QVBoxLayout(box)
main_layout.addWidget(box)
button_group = QButtonGroup()
button_group.buttonClicked[int].connect(self.set_default_method)
for method, _ in list(METHODS.items())[1:-1]:
imputer = self.create_imputer(method)
button = QRadioButton(imputer.name)
button.setChecked(method == self.default_method_index)
button_group.addButton(button, method)
box_layout.addWidget(button)
self.default_button_group = button_group
box = QGroupBox(title=self.tr("Individual Attribute Settings"),
flat=False)
main_layout.addWidget(box)
horizontal_layout = QHBoxLayout(box)
main_layout.addWidget(box)
self.varview = QListView(
selectionMode=QListView.ExtendedSelection,
uniformItemSizes=True
)
self.varview.setItemDelegate(DisplayFormatDelegate())
self.varmodel = itemmodels.VariableListModel()
self.varview.setModel(self.varmodel)
self.varview.selectionModel().selectionChanged.connect(
self._on_var_selection_changed
)
self.selection = self.varview.selectionModel()
horizontal_layout.addWidget(self.varview)
method_layout = QVBoxLayout()
horizontal_layout.addLayout(method_layout)
button_group = QButtonGroup()
for method in Method:
imputer = self.create_imputer(method)
button = QRadioButton(text=imputer.name)
button_group.addButton(button, method)
method_layout.addWidget(button)
self.value_combo = QComboBox(
minimumContentsLength=8,
sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLength,
activated=self._on_value_selected
)
self.value_double = QDoubleSpinBox(
editingFinished=self._on_value_selected,
minimum=-1000., maximum=1000., singleStep=.1, decimals=3,
)
self.value_stack = value_stack = QStackedWidget()
value_stack.addWidget(self.value_combo)
value_stack.addWidget(self.value_double)
method_layout.addWidget(value_stack)
button_group.buttonClicked[int].connect(
self.set_method_for_current_selection
)
method_layout.addStretch(2)
reset_button = QPushButton(
"Restore All to Default", checked=False, checkable=False,
clicked=self.reset_variable_state, default=False,
autoDefault=False)
method_layout.addWidget(reset_button)
self.variable_button_group = button_group
box = gui.auto_commit(
self.controlArea, self, "autocommit", "Apply",
orientation=Qt.Horizontal,
checkbox_label="Apply automatically")
box.button.setFixedWidth(180)
box.layout().insertStretch(0)
def create_imputer(self, method, *args):
# type: (Method, ...) -> impute.BaseImputeMethod
if method == Method.Model:
if self.learner is not None:
return impute.Model(self.learner)
else:
return impute.Model(self.default_learner)
elif method == Method.AsAboveSoBelow:
assert self.default_method_index != Method.AsAboveSoBelow
default = self.create_imputer(Method(self.default_method_index))
m = AsDefault()
m.method = default
return m
else:
return METHODS[method](*args)
@property
def default_method_index(self):
return self._default_method_index
@default_method_index.setter
def default_method_index(self, index):
if self._default_method_index != index:
assert index != Method.AsAboveSoBelow
self._default_method_index = index
self.default_button_group.button(index).setChecked(True)
# update variable view
self.update_varview()
self._invalidate()
def set_default_method(self, index):
"""Set the current selected default imputation method.
"""
self.default_method_index = index
@Inputs.data
@check_sql_input
def set_data(self, data):
self.closeContext()
self.varmodel[:] = []
self._variable_imputation_state = {} # type: VariableState
self.modified = False
self.data = data
if data is not None:
self.varmodel[:] = data.domain.variables
self.openContext(data.domain)
# restore per variable imputation state
self._restore_state(self._variable_imputation_state)
self.update_varview()
self.unconditional_commit()
@Inputs.learner
def set_learner(self, learner):
self.learner = learner or self.default_learner
imputer = self.create_imputer(Method.Model)
button = self.default_button_group.button(Method.Model)
button.setText(imputer.name)
variable_button = self.variable_button_group.button(Method.Model)
variable_button.setText(imputer.name)
if learner is not None:
self.default_method_index = Method.Model
self.update_varview()
self.commit()
def get_method_for_column(self, column_index):
# type: (int) -> impute.BaseImputeMethod
"""
Return the imputation method for column by its index.
"""
assert 0 <= column_index < len(self.varmodel)
idx = self.varmodel.index(column_index, 0)
state = idx.data(StateRole)
if state is None:
state = (Method.AsAboveSoBelow, ())
return self.create_imputer(state[0], *state[1])
def _invalidate(self):
self.modified = True
if self.__task is not None:
self.cancel()
self.commit()
def commit(self):
self.cancel()
self.warning()
self.Error.imputation_failed.clear()
self.Error.model_based_imputer_sparse.clear()
if self.data is None or len(self.data) == 0 or len(self.varmodel) == 0:
self.Outputs.data.send(self.data)
self.modified = False
return
data = self.data
impute_state = [
(i, var, self.get_method_for_column(i))
for i, var in enumerate(self.varmodel)
]
# normalize to the effective method bypasing AsDefault
impute_state = [
(i, var, m.method if isinstance(m, AsDefault) else m)
for i, var, m in impute_state
]
def impute_one(method, var, data):
# type: (impute.BaseImputeMethod, Variable, Table) -> Any
if isinstance(method, impute.Model) and data.is_sparse():
raise SparseNotSupported()
elif isinstance(method, impute.DropInstances):
return RowMask(method(data, var))
elif not method.supports_variable(var):
raise VariableNotSupported(var)
else:
return method(data, var)
futures = []
for _, var, method in impute_state:
f = self.executor.submit(
impute_one, copy.deepcopy(method), var, data)
futures.append(f)
w = qconcurrent.FutureSetWatcher(futures)
w.doneAll.connect(self.__commit_finish)
w.progressChanged.connect(self.__progress_changed)
self.__task = Task(futures, w)
self.progressBarInit(processEvents=False)
self.setBlocking(True)
@Slot()
def __commit_finish(self):
assert QThread.currentThread() is self.thread()
assert self.__task is not None
futures = self.__task.futures
assert len(futures) == len(self.varmodel)
assert self.data is not None
self.__task = None
self.setBlocking(False)
self.progressBarFinished()
data = self.data
attributes = []
class_vars = []
drop_mask = np.zeros(len(self.data), bool)
for i, (var, fut) in enumerate(zip(self.varmodel, futures)):
assert fut.done()
newvar = []
try:
res = fut.result()
except SparseNotSupported:
self.Error.model_based_imputer_sparse()
# ?? break
except VariableNotSupported:
self.warning("Default method can not handle '{}'".
format(var.name))
except Exception: # pylint: disable=broad-except
log = logging.getLogger(__name__)
log.info("Error for %s", var, exc_info=True)
self.Error.imputation_failed(var.name)
attributes = class_vars = None
break
else:
if isinstance(res, RowMask):
drop_mask |= res.mask
newvar = var
else:
newvar = res
if isinstance(newvar, Orange.data.Variable):
newvar = [newvar]
if i < len(data.domain.attributes):
attributes.extend(newvar)
else:
class_vars.extend(newvar)
if attributes is None:
data = None
else:
domain = Orange.data.Domain(attributes, class_vars,
data.domain.metas)
try:
data = self.data.from_table(domain, data[~drop_mask])
except Exception: # pylint: disable=broad-except
log = logging.getLogger(__name__)
log.info("Error", exc_info=True)
self.Error.imputation_failed("Unknown")
data = None
self.Outputs.data.send(data)
self.modified = False
@Slot(int, int)
def __progress_changed(self, n, d):
assert QThread.currentThread() is self.thread()
assert self.__task is not None
self.progressBarSet(100. * n / d)
def cancel(self):
if self.__task is not None:
task, self.__task = self.__task, None
task.cancel()
task.watcher.doneAll.disconnect(self.__commit_finish)
task.watcher.progressChanged.disconnect(self.__progress_changed)
concurrent.futures.wait(task.futures)
task.watcher.flush()
self.progressBarFinished()
self.setBlocking(False)
def onDeleteWidget(self):
self.cancel()
super().onDeleteWidget()
def send_report(self):
specific = []
for i, var in enumerate(self.varmodel):
method = self.get_method_for_column(i)
if not isinstance(method, AsDefault):
specific.append("{} ({})".format(var.name, str(method)))
default = self.create_imputer(Method.AsAboveSoBelow)
if specific:
self.report_items((
("Default method", default.name),
("Specific imputers", ", ".join(specific))
))
else:
self.report_items((("Method", default.name),))
def _on_var_selection_changed(self):
indexes = self.selection.selectedIndexes()
defmethod = (Method.AsAboveSoBelow, ())
methods = [index.data(StateRole) for index in indexes]
methods = [m if m is not None else defmethod for m in methods]
methods = set(methods)
selected_vars = [self.varmodel[index.row()] for index in indexes]
has_discrete = any(var.is_discrete for var in selected_vars)
fixed_value = None
value_stack_enabled = False
current_value_widget = None
if len(methods) == 1:
method_type, parameters = methods.pop()
for m in Method:
if method_type == m:
self.variable_button_group.button(m).setChecked(True)
if method_type == Method.Default:
(fixed_value,) = parameters
elif self.variable_button_group.checkedButton() is not None:
# Uncheck the current button
self.variable_button_group.setExclusive(False)
self.variable_button_group.checkedButton().setChecked(False)
self.variable_button_group.setExclusive(True)
assert self.variable_button_group.checkedButton() is None
# Update variable methods GUI enabled state based on selection.
for method in Method:
# use a default constructed imputer to query support
imputer = self.create_imputer(method)
enabled = all(imputer.supports_variable(var) for var in
selected_vars)
button = self.variable_button_group.button(method)
button.setEnabled(enabled)
# Update the "Value" edit GUI.
if not has_discrete:
# no discrete variables -> allow mass edit for all (continuous vars)
value_stack_enabled = True
current_value_widget = self.value_double
elif len(selected_vars) == 1:
# single discrete var -> enable and fill the values combo
value_stack_enabled = True
current_value_widget = self.value_combo
self.value_combo.clear()
self.value_combo.addItems(selected_vars[0].values)
else:
# mixed type selection -> disable
value_stack_enabled = False
current_value_widget = None
self.variable_button_group.button(Method.Default).setEnabled(False)
self.value_stack.setEnabled(value_stack_enabled)
if current_value_widget is not None:
self.value_stack.setCurrentWidget(current_value_widget)
if fixed_value is not None:
# set current value
if current_value_widget is self.value_combo:
self.value_combo.setCurrentIndex(fixed_value)
elif current_value_widget is self.value_double:
self.value_double.setValue(fixed_value)
else:
assert False
def set_method_for_current_selection(self, method_index):
# type: (Method) -> None
indexes = self.selection.selectedIndexes()
self.set_method_for_indexes(indexes, method_index)
def set_method_for_indexes(self, indexes, method_index):
# type: (List[QModelIndex], Method) -> None
if method_index == Method.AsAboveSoBelow:
for index in indexes:
self.varmodel.setData(index, None, StateRole)
elif method_index == Method.Default:
current = self.value_stack.currentWidget()
if current is self.value_combo:
value = self.value_combo.currentIndex()
else:
value = self.value_double.value()
for index in indexes:
state = (int(Method.Default), (value,))
self.varmodel.setData(index, state, StateRole)
else:
state = (int(method_index), ())
for index in indexes:
self.varmodel.setData(index, state, StateRole)
self.update_varview(indexes)
self._invalidate()
def update_varview(self, indexes=None):
if indexes is None:
indexes = map(self.varmodel.index, range(len(self.varmodel)))
for index in indexes:
self.varmodel.setData(
index, self.get_method_for_column(index.row()),
DisplayMethodRole)
def _on_value_selected(self):
# The fixed 'Value' in the widget has been changed by the user.
self.variable_button_group.button(Method.Default).setChecked(True)
self.set_method_for_current_selection(Method.Default)
def reset_variable_state(self):
indexes = list(map(self.varmodel.index, range(len(self.varmodel))))
self.set_method_for_indexes(indexes, Method.AsAboveSoBelow)
self.variable_button_group.button(Method.AsAboveSoBelow).setChecked(True)
def _store_state(self):
# type: () -> VariableState
"""
Save the current variable imputation state
"""
state = {} # type: VariableState
for i, var in enumerate(self.varmodel):
index = self.varmodel.index(i)
m = index.data(StateRole)
if m is not None:
state[var_key(var)] = m
return state
def _restore_state(self, state):
# type: (VariableState) -> None
"""
Restore the variable imputation state from the saved state
"""
def check(state):
# check if state is a proper State
if isinstance(state, tuple) and len(state) == 2:
m, p = state
if isinstance(m, int) and isinstance(p, tuple) and \
0 <= m < len(Method):
return True
return False
for i, var in enumerate(self.varmodel):
m = state.get(var_key(var), None)
if check(m):
self.varmodel.setData(self.varmodel.index(i), m, StateRole)
def storeSpecificSettings(self):
self._variable_imputation_state = self._store_state()
super().storeSpecificSettings()
class SelectionSetsWidget(QFrame):
"""
Widget for managing multiple stored item selections
"""
selectionModified = Signal(bool)
def __init__(self, parent):
QFrame.__init__(self, parent)
self.setContentsMargins(0, 0, 0, 0)
layout = QVBoxLayout()
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(1)
self._setNameLineEdit = QLineEdit(self)
layout.addWidget(self._setNameLineEdit)
self._setListView = QListView(self)
self._listModel = QStandardItemModel(self)
self._proxyModel = QSortFilterProxyModel(self)
self._proxyModel.setSourceModel(self._listModel)
self._setListView.setModel(self._proxyModel)
self._setListView.setItemDelegate(ListItemDelegate(self))
self._setNameLineEdit.textChanged.connect(
self._proxyModel.setFilterFixedString)
self._completer = QCompleter(self._listModel, self)
self._setNameLineEdit.setCompleter(self._completer)
self._listModel.itemChanged.connect(self._onSetNameChange)
layout.addWidget(self._setListView)
buttonLayout = QHBoxLayout()
self._addAction = QAction(
"+", self, toolTip="Add a new sort key")
self._updateAction = QAction(
"Update", self, toolTip="Update/save current selection")
self._removeAction = QAction(
"\u2212", self, toolTip="Remove selected sort key.")
self._addToolButton = QToolButton(self)
self._updateToolButton = QToolButton(self)
self._removeToolButton = QToolButton(self)
self._updateToolButton.setSizePolicy(
QSizePolicy.MinimumExpanding, QSizePolicy.Minimum)
self._addToolButton.setDefaultAction(self._addAction)
self._updateToolButton.setDefaultAction(self._updateAction)
self._removeToolButton.setDefaultAction(self._removeAction)
buttonLayout.addWidget(self._addToolButton)
buttonLayout.addWidget(self._updateToolButton)
buttonLayout.addWidget(self._removeToolButton)
layout.addLayout(buttonLayout)
self.setLayout(layout)
self._addAction.triggered.connect(self.addCurrentSelection)
self._updateAction.triggered.connect(self.updateSelectedSelection)
self._removeAction.triggered.connect(self.removeSelectedSelection)
self._setListView.selectionModel().selectionChanged.connect(
self._onListViewSelectionChanged)
self.selectionModel = None
self._selections = []
def sizeHint(self):
size = QFrame.sizeHint(self)
return QSize(size.width(), 150)
def _onSelectionChanged(self, selected, deselected):
self.setSelectionModified(True)
def _onListViewSelectionChanged(self, selected, deselected):
try:
index = self._setListView.selectedIndexes()[0]
except IndexError:
return
self.commitSelection(self._proxyModel.mapToSource(index).row())
def _onSetNameChange(self, item):
self.selections[item.row()].name = str(item.text())
def _setButtonStates(self, val):
self._updateToolButton.setEnabled(val)
def setSelectionModel(self, selectionModel):
if self.selectionModel:
self.selectionModel.selectionChanged.disconnect(
self._onSelectionChanged)
self.selectionModel = selectionModel
self.selectionModel.selectionChanged.connect(self._onSelectionChanged)
def addCurrentSelection(self):
item = self.addSelection(
SelectionByKey(self.selectionModel.selection(),
name="New selection",
key=(1, 2, 3, 10)))
index = self._proxyModel.mapFromSource(item.index())
self._setListView.setCurrentIndex(index)
self._setListView.edit(index)
self.setSelectionModified(False)
def removeSelectedSelection(self):
i = self._proxyModel.mapToSource(self._setListView.currentIndex()).row()
self._listModel.takeRow(i)
del self.selections[i]
def updateCurentSelection(self):
i = self._proxyModel.mapToSource(self._setListView.selectedIndex()).row()
self.selections[i].setSelection(self.selectionModel.selection())
self.setSelectionModified(False)
def addSelection(self, selection, name=""):
self._selections.append(selection)
item = QStandardItem(selection.name)
item.setFlags(item.flags() ^ Qt.ItemIsDropEnabled)
self._listModel.appendRow(item)
self.setSelectionModified(False)
return item
def updateSelectedSelection(self):
i = self._proxyModel.mapToSource(self._setListView.currentIndex()).row()
self.selections[i].setSelection(self.selectionModel.selection())
self.setSelectionModified(False)
def setSelectionModified(self, val):
self._selectionModified = val
self._setButtonStates(val)
self.selectionModified.emit(bool(val))
def commitSelection(self, index):
selection = self.selections[index]
selection.select(self.selectionModel)
def setSelections(self, selections):
self._listModel.clear()
for selection in selections:
self.addSelection(selection)
def selections(self):
return self._selections
selections = property(selections, setSelections)
class OWPythonScript(OWWidget):
name = "Python Script"
description = "Write a Python script and run it on input data or models."
category = "Transform"
icon = "icons/PythonScript.svg"
priority = 3150
keywords = ["program", "function"]
class Inputs:
data = MultiInput("Data", Table, replaces=["in_data"], default=True)
learner = MultiInput("Learner",
Learner,
replaces=["in_learner"],
default=True)
classifier = MultiInput("Classifier",
Model,
replaces=["in_classifier"],
default=True)
object = MultiInput("Object",
object,
replaces=["in_object"],
default=False,
auto_summary=False)
class Outputs:
data = Output("Data", Table, replaces=["out_data"])
learner = Output("Learner", Learner, replaces=["out_learner"])
classifier = Output("Classifier", Model, replaces=["out_classifier"])
object = Output("Object",
object,
replaces=["out_object"],
auto_summary=False)
signal_names = ("data", "learner", "classifier", "object")
settings_version = 2
scriptLibrary: 'List[_ScriptData]' = Setting([{
"name": "Table from numpy",
"script": DEFAULT_SCRIPT,
"filename": None
}])
currentScriptIndex = Setting(0)
scriptText: Optional[str] = Setting(None, schema_only=True)
splitterState: Optional[bytes] = Setting(None)
vimModeEnabled = Setting(False)
class Error(OWWidget.Error):
pass
def __init__(self):
super().__init__()
for name in self.signal_names:
setattr(self, name, [])
self.splitCanvas = QSplitter(Qt.Vertical, self.mainArea)
self.mainArea.layout().addWidget(self.splitCanvas)
# Styling
self.defaultFont = defaultFont = (
'Menlo' if sys.platform == 'darwin' else 'Courier'
if sys.platform in ['win32', 'cygwin'] else 'DejaVu Sans Mono')
self.defaultFontSize = defaultFontSize = 13
self.editorBox = gui.vBox(self, box="Editor", spacing=4)
self.splitCanvas.addWidget(self.editorBox)
darkMode = QApplication.instance().property('darkMode')
scheme_name = 'Dark' if darkMode else 'Light'
syntax_highlighting_scheme = SYNTAX_HIGHLIGHTING_STYLES[scheme_name]
self.pygments_style_class = make_pygments_style(scheme_name)
eFont = QFont(defaultFont)
eFont.setPointSize(defaultFontSize)
# Fake Signature
self.func_sig = func_sig = FunctionSignature(
self.editorBox, syntax_highlighting_scheme, eFont)
# Editor
editor = PythonEditor(self)
editor.setFont(eFont)
editor.setup_completer_appearance((300, 180), eFont)
# Fake return
return_stmt = ReturnStatement(self.editorBox,
syntax_highlighting_scheme, eFont)
self.return_stmt = return_stmt
# Match indentation
textEditBox = QWidget(self.editorBox)
textEditBox.setLayout(QHBoxLayout())
char_4_width = QFontMetrics(eFont).horizontalAdvance('0000')
@editor.viewport_margins_updated.connect
def _(width):
func_sig.setIndent(width)
textEditMargin = max(0, round(char_4_width - width))
return_stmt.setIndent(textEditMargin + width)
textEditBox.layout().setContentsMargins(textEditMargin, 0, 0, 0)
self.text = editor
textEditBox.layout().addWidget(editor)
self.editorBox.layout().addWidget(func_sig)
self.editorBox.layout().addWidget(textEditBox)
self.editorBox.layout().addWidget(return_stmt)
self.editorBox.setAlignment(Qt.AlignVCenter)
self.text.modificationChanged[bool].connect(self.onModificationChanged)
# Controls
self.editor_controls = gui.vBox(self.controlArea, box='Preferences')
self.vim_box = gui.hBox(self.editor_controls, spacing=20)
self.vim_indicator = VimIndicator(self.vim_box)
vim_sp = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
vim_sp.setRetainSizeWhenHidden(True)
self.vim_indicator.setSizePolicy(vim_sp)
def enable_vim_mode():
editor.vimModeEnabled = self.vimModeEnabled
self.vim_indicator.setVisible(self.vimModeEnabled)
enable_vim_mode()
gui.checkBox(self.vim_box,
self,
'vimModeEnabled',
'Vim mode',
tooltip="Only for the coolest.",
callback=enable_vim_mode)
self.vim_box.layout().addWidget(self.vim_indicator)
@editor.vimModeIndicationChanged.connect
def _(color, text):
self.vim_indicator.indicator_color = color
self.vim_indicator.indicator_text = text
self.vim_indicator.update()
# Library
self.libraryListSource = []
self._cachedDocuments = {}
self.libraryList = itemmodels.PyListModel(
[],
self,
flags=Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable)
self.libraryList.wrap(self.libraryListSource)
self.controlBox = gui.vBox(self.controlArea, 'Library')
self.controlBox.layout().setSpacing(1)
self.libraryView = QListView(
editTriggers=QListView.DoubleClicked | QListView.EditKeyPressed,
sizePolicy=QSizePolicy(QSizePolicy.Ignored, QSizePolicy.Preferred))
self.libraryView.setItemDelegate(ScriptItemDelegate(self))
self.libraryView.setModel(self.libraryList)
self.libraryView.selectionModel().selectionChanged.connect(
self.onSelectedScriptChanged)
self.controlBox.layout().addWidget(self.libraryView)
w = itemmodels.ModelActionsWidget()
self.addNewScriptAction = action = QAction("+", self)
action.setToolTip("Add a new script to the library")
action.triggered.connect(self.onAddScript)
w.addAction(action)
action = QAction(unicodedata.lookup("MINUS SIGN"), self)
action.setToolTip("Remove script from library")
action.triggered.connect(self.onRemoveScript)
w.addAction(action)
action = QAction("Update", self)
action.setToolTip("Save changes in the editor to library")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.triggered.connect(self.commitChangesToLibrary)
w.addAction(action)
action = QAction("More", self, toolTip="More actions")
new_from_file = QAction("Import Script from File", self)
save_to_file = QAction("Save Selected Script to File", self)
restore_saved = QAction("Undo Changes to Selected Script", self)
save_to_file.setShortcut(QKeySequence(QKeySequence.SaveAs))
new_from_file.triggered.connect(self.onAddScriptFromFile)
save_to_file.triggered.connect(self.saveScript)
restore_saved.triggered.connect(self.restoreSaved)
menu = QMenu(w)
menu.addAction(new_from_file)
menu.addAction(save_to_file)
menu.addAction(restore_saved)
action.setMenu(menu)
button = w.addAction(action)
button.setPopupMode(QToolButton.InstantPopup)
w.layout().setSpacing(1)
self.controlBox.layout().addWidget(w)
self.execute_button = gui.button(self.buttonsArea,
self,
'Run',
callback=self.commit)
self.run_action = QAction("Run script",
self,
triggered=self.commit,
shortcut=QKeySequence(Qt.ControlModifier
| Qt.Key_R))
self.addAction(self.run_action)
self.saveAction = action = QAction("&Save", self.text)
action.setToolTip("Save script to file")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.setShortcutContext(Qt.WidgetWithChildrenShortcut)
action.triggered.connect(self.saveScript)
self.consoleBox = gui.vBox(self.splitCanvas, 'Console')
self.console = PythonConsole({}, self)
self.consoleBox.layout().addWidget(self.console)
self.console.document().setDefaultFont(QFont(defaultFont))
self.consoleBox.setAlignment(Qt.AlignBottom)
self.splitCanvas.setSizes([2, 1])
self.controlArea.layout().addStretch(10)
self._restoreState()
self.settingsAboutToBePacked.connect(self._saveState)
def sizeHint(self) -> QSize:
return super().sizeHint().expandedTo(QSize(800, 600))
def _restoreState(self):
self.libraryListSource = [
Script.fromdict(s) for s in self.scriptLibrary
]
self.libraryList.wrap(self.libraryListSource)
select_row(self.libraryView, self.currentScriptIndex)
if self.scriptText is not None:
current = self.text.toPlainText()
# do not mark scripts as modified
if self.scriptText != current:
self.text.document().setPlainText(self.scriptText)
if self.splitterState is not None:
self.splitCanvas.restoreState(QByteArray(self.splitterState))
def _saveState(self):
self.scriptLibrary = [s.asdict() for s in self.libraryListSource]
self.scriptText = self.text.toPlainText()
self.splitterState = bytes(self.splitCanvas.saveState())
def set_input(self, index, obj, signal):
dic = getattr(self, signal)
dic[index] = obj
def insert_input(self, index, obj, signal):
dic = getattr(self, signal)
dic.insert(index, obj)
def remove_input(self, index, signal):
dic = getattr(self, signal)
dic.pop(index)
@Inputs.data
def set_data(self, index, data):
self.set_input(index, data, "data")
@Inputs.data.insert
def insert_data(self, index, data):
self.insert_input(index, data, "data")
@Inputs.data.remove
def remove_data(self, index):
self.remove_input(index, "data")
@Inputs.learner
def set_learner(self, index, learner):
self.set_input(index, learner, "learner")
@Inputs.learner.insert
def insert_learner(self, index, learner):
self.insert_input(index, learner, "learner")
@Inputs.learner.remove
def remove_learner(self, index):
self.remove_input(index, "learner")
@Inputs.classifier
def set_classifier(self, index, classifier):
self.set_input(index, classifier, "classifier")
@Inputs.classifier.insert
def insert_classifier(self, index, classifier):
self.insert_input(index, classifier, "classifier")
@Inputs.classifier.remove
def remove_classifier(self, index):
self.remove_input(index, "classifier")
@Inputs.object
def set_object(self, index, object):
self.set_input(index, object, "object")
@Inputs.object.insert
def insert_object(self, index, object):
self.insert_input(index, object, "object")
@Inputs.object.remove
def remove_object(self, index):
self.remove_input(index, "object")
def handleNewSignals(self):
# update fake signature labels
self.func_sig.update_signal_text(
{n: len(getattr(self, n))
for n in self.signal_names})
self.commit()
def selectedScriptIndex(self):
rows = self.libraryView.selectionModel().selectedRows()
if rows:
return [i.row() for i in rows][0]
else:
return None
def setSelectedScript(self, index):
select_row(self.libraryView, index)
def onAddScript(self, *_):
self.libraryList.append(
Script("New script", self.text.toPlainText(), 0))
self.setSelectedScript(len(self.libraryList) - 1)
def onAddScriptFromFile(self, *_):
filename, _ = QFileDialog.getOpenFileName(
self, 'Open Python Script', os.path.expanduser("~/"),
'Python files (*.py)\nAll files(*.*)')
if filename:
name = os.path.basename(filename)
with tokenize.open(filename) as f:
contents = f.read()
self.libraryList.append(Script(name, contents, 0, filename))
self.setSelectedScript(len(self.libraryList) - 1)
def onRemoveScript(self, *_):
index = self.selectedScriptIndex()
if index is not None:
del self.libraryList[index]
select_row(self.libraryView, max(index - 1, 0))
def onSaveScriptToFile(self, *_):
index = self.selectedScriptIndex()
if index is not None:
self.saveScript()
def onSelectedScriptChanged(self, selected, _deselected):
index = [i.row() for i in selected.indexes()]
if index:
current = index[0]
if current >= len(self.libraryList):
self.addNewScriptAction.trigger()
return
self.text.setDocument(self.documentForScript(current))
self.currentScriptIndex = current
def documentForScript(self, script=0):
if not isinstance(script, Script):
script = self.libraryList[script]
if script not in self._cachedDocuments:
doc = QTextDocument(self)
doc.setDocumentLayout(QPlainTextDocumentLayout(doc))
doc.setPlainText(script.script)
doc.setDefaultFont(QFont(self.defaultFont))
doc.highlighter = PygmentsHighlighter(doc)
doc.highlighter.set_style(self.pygments_style_class)
doc.setDefaultFont(
QFont(self.defaultFont, pointSize=self.defaultFontSize))
doc.modificationChanged[bool].connect(self.onModificationChanged)
doc.setModified(False)
self._cachedDocuments[script] = doc
return self._cachedDocuments[script]
def commitChangesToLibrary(self, *_):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].script = self.text.toPlainText()
self.text.document().setModified(False)
self.libraryList.emitDataChanged(index)
def onModificationChanged(self, modified):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].flags = Script.Modified if modified else 0
self.libraryList.emitDataChanged(index)
def restoreSaved(self):
index = self.selectedScriptIndex()
if index is not None:
self.text.document().setPlainText(self.libraryList[index].script)
self.text.document().setModified(False)
def saveScript(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
filename = script.filename
else:
filename = os.path.expanduser("~/")
filename, _ = QFileDialog.getSaveFileName(
self, 'Save Python Script', filename,
'Python files (*.py)\nAll files(*.*)')
if filename:
fn = ""
head, tail = os.path.splitext(filename)
if not tail:
fn = head + ".py"
else:
fn = filename
f = open(fn, 'w')
f.write(self.text.toPlainText())
f.close()
def initial_locals_state(self):
d = {}
for name in self.signal_names:
value = getattr(self, name)
all_values = list(value)
one_value = all_values[0] if len(all_values) == 1 else None
d["in_" + name + "s"] = all_values
d["in_" + name] = one_value
return d
def commit(self):
self.Error.clear()
lcls = self.initial_locals_state()
lcls["_script"] = str(self.text.toPlainText())
self.console.updateLocals(lcls)
self.console.write("\nRunning script:\n")
self.console.push("exec(_script)")
self.console.new_prompt(sys.ps1)
for signal in self.signal_names:
out_var = self.console.locals.get("out_" + signal)
signal_type = getattr(self.Outputs, signal).type
if not isinstance(out_var, signal_type) and out_var is not None:
self.Error.add_message(
signal, "'{}' has to be an instance of '{}'.".format(
signal, signal_type.__name__))
getattr(self.Error, signal)()
out_var = None
getattr(self.Outputs, signal).send(out_var)
def keyPressEvent(self, e):
if e.matches(QKeySequence.InsertLineSeparator):
# run on Shift+Enter, Ctrl+Enter
self.run_action.trigger()
e.accept()
else:
super().keyPressEvent(e)
def dragEnterEvent(self, event): # pylint: disable=no-self-use
urls = event.mimeData().urls()
if urls:
# try reading the file as text
c = read_file_content(urls[0].toLocalFile(), limit=1000)
if c is not None:
event.acceptProposedAction()
@classmethod
def migrate_settings(cls, settings, version):
if version is not None and version < 2:
scripts = settings.pop("libraryListSource") # type: List[Script]
library = [
dict(name=s.name, script=s.script, filename=s.filename)
for s in scripts
] # type: List[_ScriptData]
settings["scriptLibrary"] = library
def onDeleteWidget(self):
self.text.terminate()
super().onDeleteWidget()
class OWImpute(OWWidget):
name = "Impute"
description = "Impute missing values in the data table."
icon = "icons/Impute.svg"
priority = 2130
inputs = [("Data", Orange.data.Table, "set_data"),
("Learner", Learner, "set_learner")]
outputs = [("Data", Orange.data.Table)]
class Error(OWWidget.Error):
imputation_failed = Msg("Imputation failed for '{}'")
DEFAULT_LEARNER = SimpleTreeLearner()
METHODS = [
AsDefault(),
impute.DoNotImpute(),
impute.Average(),
impute.AsValue(),
impute.Model(DEFAULT_LEARNER),
impute.Random(),
impute.DropInstances(),
impute.Default()
]
DEFAULT, DO_NOT_IMPUTE, MODEL_BASED_IMPUTER, AS_INPUT = 0, 1, 4, 7
settingsHandler = settings.DomainContextHandler()
_default_method_index = settings.Setting(DO_NOT_IMPUTE)
variable_methods = settings.ContextSetting({})
autocommit = settings.Setting(True)
want_main_area = False
resizing_enabled = False
def __init__(self):
super().__init__()
# copy METHODS (some are modified by the widget)
self.methods = copy.deepcopy(OWImpute.METHODS)
main_layout = QVBoxLayout()
main_layout.setContentsMargins(10, 10, 10, 10)
self.controlArea.layout().addLayout(main_layout)
box = QGroupBox(title=self.tr("Default Method"), flat=False)
box_layout = QVBoxLayout(box)
main_layout.addWidget(box)
button_group = QButtonGroup()
button_group.buttonClicked[int].connect(self.set_default_method)
for i, method in enumerate(self.methods):
if not method.columns_only:
button = QRadioButton(method.name)
button.setChecked(i == self.default_method_index)
button_group.addButton(button, i)
box_layout.addWidget(button)
self.default_button_group = button_group
box = QGroupBox(title=self.tr("Individual Attribute Settings"),
flat=False)
main_layout.addWidget(box)
horizontal_layout = QHBoxLayout(box)
main_layout.addWidget(box)
self.varview = QListView(selectionMode=QListView.ExtendedSelection)
self.varview.setItemDelegate(DisplayFormatDelegate())
self.varmodel = itemmodels.VariableListModel()
self.varview.setModel(self.varmodel)
self.varview.selectionModel().selectionChanged.connect(
self._on_var_selection_changed)
self.selection = self.varview.selectionModel()
horizontal_layout.addWidget(self.varview)
method_layout = QVBoxLayout()
horizontal_layout.addLayout(method_layout)
button_group = QButtonGroup()
for i, method in enumerate(self.methods):
button = QRadioButton(text=method.name)
button_group.addButton(button, i)
method_layout.addWidget(button)
self.value_combo = QComboBox(
minimumContentsLength=8,
sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLength,
activated=self._on_value_selected)
self.value_double = QDoubleSpinBox(
editingFinished=self._on_value_selected,
minimum=-1000.,
maximum=1000.,
singleStep=.1,
decimals=3,
)
self.value_stack = value_stack = QStackedWidget()
value_stack.addWidget(self.value_combo)
value_stack.addWidget(self.value_double)
method_layout.addWidget(value_stack)
button_group.buttonClicked[int].connect(
self.set_method_for_current_selection)
method_layout.addStretch(2)
reset_button = QPushButton("Restore All to Default",
checked=False,
checkable=False,
clicked=self.reset_variable_methods,
default=False,
autoDefault=False)
method_layout.addWidget(reset_button)
self.variable_button_group = button_group
box = gui.auto_commit(self.controlArea,
self,
"autocommit",
"Apply",
orientation=Qt.Horizontal,
checkbox_label="Apply automatically")
box.layout().insertSpacing(0, 80)
box.layout().insertWidget(0, self.report_button)
self.data = None
self.learner = None
self.modified = False
self.default_method = self.methods[self.default_method_index]
@property
def default_method_index(self):
return self._default_method_index
@default_method_index.setter
def default_method_index(self, index):
if self._default_method_index != index:
self._default_method_index = index
self.default_button_group.button(index).setChecked(True)
self.default_method = self.methods[self.default_method_index]
self.methods[self.DEFAULT].method = self.default_method
# update variable view
for index in map(self.varmodel.index, range(len(self.varmodel))):
method = self.variable_methods.get(index.row(),
self.methods[self.DEFAULT])
self.varmodel.setData(index, method, Qt.UserRole)
self._invalidate()
def set_default_method(self, index):
"""Set the current selected default imputation method.
"""
self.default_method_index = index
@check_sql_input
def set_data(self, data):
self.closeContext()
self.varmodel[:] = []
self.variable_methods = {}
self.modified = False
self.data = data
if data is not None:
self.varmodel[:] = data.domain.variables
self.openContext(data.domain)
self.update_varview()
self.unconditional_commit()
def set_learner(self, learner):
self.learner = learner or self.DEFAULT_LEARNER
imputer = self.methods[self.MODEL_BASED_IMPUTER]
imputer.learner = self.learner
button = self.default_button_group.button(self.MODEL_BASED_IMPUTER)
button.setText(imputer.name)
variable_button = self.variable_button_group.button(
self.MODEL_BASED_IMPUTER)
variable_button.setText(imputer.name)
if learner is not None:
self.default_method_index = self.MODEL_BASED_IMPUTER
self.update_varview()
self.commit()
def get_method_for_column(self, column_index):
"""Returns the imputation method for column by its index.
"""
if not isinstance(column_index, int):
column_index = column_index.row()
return self.variable_methods.get(column_index,
self.methods[self.DEFAULT])
def _invalidate(self):
self.modified = True
self.commit()
def commit(self):
data = self.data
if self.data is not None:
if not len(self.data):
self.send("Data", self.data)
self.modified = False
return
drop_mask = np.zeros(len(self.data), bool)
attributes = []
class_vars = []
self.warning()
self.Error.imputation_failed.clear()
with self.progressBar(len(self.varmodel)) as progress:
for i, var in enumerate(self.varmodel):
method = self.variable_methods.get(i, self.default_method)
try:
if not method.supports_variable(var):
self.warning(
"Default method can not handle '{}'".format(
var.name))
elif isinstance(method, impute.DropInstances):
drop_mask |= method(self.data, var)
else:
var = method(self.data, var)
except Exception: # pylint: disable=broad-except
self.Error.imputation_failed(var.name)
attributes = class_vars = None
break
if isinstance(var, Orange.data.Variable):
var = [var]
if i < len(self.data.domain.attributes):
attributes.extend(var)
else:
class_vars.extend(var)
progress.advance()
if attributes is None:
data = None
else:
domain = Orange.data.Domain(attributes, class_vars,
self.data.domain.metas)
data = self.data.from_table(domain, self.data[~drop_mask])
self.send("Data", data)
self.modified = False
def send_report(self):
specific = []
for i, var in enumerate(self.varmodel):
method = self.variable_methods.get(i, None)
if method is not None:
specific.append("{} ({})".format(var.name, str(method)))
default = self.default_method.name
if specific:
self.report_items((("Default method", default),
("Specific imputers", ", ".join(specific))))
else:
self.report_items((("Method", default), ))
def _on_var_selection_changed(self):
indexes = self.selection.selectedIndexes()
methods = [self.get_method_for_column(i.row()) for i in indexes]
def method_key(method):
"""
Decompose method into its type and parameters.
"""
# The return value should be hashable and __eq__ comparable
if isinstance(method, AsDefault):
return AsDefault, (method.method, )
elif isinstance(method, impute.Model):
return impute.Model, (method.learner, )
elif isinstance(method, impute.Default):
return impute.Default, (method.default, )
else:
return type(method), None
methods = set(method_key(m) for m in methods)
selected_vars = [self.varmodel[index.row()] for index in indexes]
has_discrete = any(var.is_discrete for var in selected_vars)
fixed_value = None
value_stack_enabled = False
current_value_widget = None
if len(methods) == 1:
method_type, parameters = methods.pop()
for i, m in enumerate(self.methods):
if method_type == type(m):
self.variable_button_group.button(i).setChecked(True)
if method_type is impute.Default:
(fixed_value, ) = parameters
elif self.variable_button_group.checkedButton() is not None:
# Uncheck the current button
self.variable_button_group.setExclusive(False)
self.variable_button_group.checkedButton().setChecked(False)
self.variable_button_group.setExclusive(True)
assert self.variable_button_group.checkedButton() is None
for method, button in zip(self.methods,
self.variable_button_group.buttons()):
enabled = all(
method.supports_variable(var) for var in selected_vars)
button.setEnabled(enabled)
if not has_discrete:
value_stack_enabled = True
current_value_widget = self.value_double
elif len(selected_vars) == 1:
value_stack_enabled = True
current_value_widget = self.value_combo
self.value_combo.clear()
self.value_combo.addItems(selected_vars[0].values)
else:
value_stack_enabled = False
current_value_widget = None
self.variable_button_group.button(self.AS_INPUT).setEnabled(False)
self.value_stack.setEnabled(value_stack_enabled)
if current_value_widget is not None:
self.value_stack.setCurrentWidget(current_value_widget)
if fixed_value is not None:
if current_value_widget is self.value_combo:
self.value_combo.setCurrentIndex(fixed_value)
elif current_value_widget is self.value_double:
self.value_double.setValue(fixed_value)
else:
assert False
def set_method_for_current_selection(self, method_index):
indexes = self.selection.selectedIndexes()
self.set_method_for_indexes(indexes, method_index)
def set_method_for_indexes(self, indexes, method_index):
if method_index == self.DEFAULT:
for index in indexes:
self.variable_methods.pop(index.row(), None)
elif method_index == OWImpute.AS_INPUT:
current = self.value_stack.currentWidget()
if current is self.value_combo:
value = self.value_combo.currentIndex()
else:
value = self.value_double.value()
for index in indexes:
method = impute.Default(default=value)
self.variable_methods[index.row()] = method
else:
method = self.methods[method_index].copy()
for index in indexes:
self.variable_methods[index.row()] = method
self.update_varview(indexes)
self._invalidate()
def update_varview(self, indexes=None):
if indexes is None:
indexes = map(self.varmodel.index, range(len(self.varmodel)))
for index in indexes:
self.varmodel.setData(index,
self.get_method_for_column(index.row()),
Qt.UserRole)
def _on_value_selected(self):
# The fixed 'Value' in the widget has been changed by the user.
self.variable_button_group.button(self.AS_INPUT).setChecked(True)
self.set_method_for_current_selection(self.AS_INPUT)
def reset_variable_methods(self):
indexes = list(map(self.varmodel.index, range(len(self.varmodel))))
self.set_method_for_indexes(indexes, self.DEFAULT)
self.variable_button_group.button(self.DEFAULT).setChecked(True)
class OWDiscretize(widget.OWWidget):
# pylint: disable=too-many-instance-attributes
name = "Discretize"
description = "Discretize the numeric data features."
icon = "icons/Discretize.svg"
keywords = []
class Inputs:
data = Input("Data", Orange.data.Table, doc="Input data table")
class Outputs:
data = Output("Data",
Orange.data.Table,
doc="Table with discretized features")
settingsHandler = settings.DomainContextHandler()
settings_version = 2
saved_var_states = settings.ContextSetting({})
#: The default method name
default_method_name = settings.Setting(Methods.EqualFreq.name)
#: The k for Equal{Freq,Width}
default_k = settings.Setting(3)
#: The default cut points for custom entry
default_cutpoints: Tuple[float, ...] = settings.Setting(())
autosend = settings.Setting(True)
#: Discretization methods
Default, Leave, MDL, EqualFreq, EqualWidth, Remove, Custom = list(Methods)
want_main_area = False
resizing_enabled = False
def __init__(self):
super().__init__()
#: input data
self.data = None
self.class_var = None
#: Current variable discretization state
self.var_state = {}
#: Saved variable discretization settings (context setting)
self.saved_var_states = {}
self.method = Methods.Default
self.k = 5
self.cutpoints = ()
self.default_cutpoints = ()
box = gui.vBox(self.controlArea, self.tr("Default Discretization"))
self._default_method_ = 0
self.default_bbox = rbox = gui.radioButtons(
box, self, "_default_method_", callback=self._default_disc_changed)
self.default_button_group = bg = rbox.findChild(QButtonGroup)
bg.buttonClicked[int].connect(self.set_default_method)
rb = gui.hBox(rbox)
self.left = gui.vBox(rb)
right = gui.vBox(rb)
rb.layout().setStretch(0, 1)
rb.layout().setStretch(1, 1)
self.options = [
(Methods.Default, self.tr("Default")),
(Methods.Leave, self.tr("Leave numeric")),
(Methods.MDL, self.tr("Entropy-MDL discretization")),
(Methods.EqualFreq, self.tr("Equal-frequency discretization")),
(Methods.EqualWidth, self.tr("Equal-width discretization")),
(Methods.Remove, self.tr("Remove numeric variables")),
(Methods.Custom, self.tr("Manual")),
]
for id_, opt in self.options[1:]:
t = gui.appendRadioButton(rbox, opt)
bg.setId(t, id_)
t.setChecked(id_ == self.default_method)
[right, self.left][opt.startswith("Equal")].layout().addWidget(t)
def _intbox(parent, attr, callback):
box = gui.indentedBox(parent)
s = gui.spin(box,
self,
attr,
minv=2,
maxv=10,
label="Num. of intervals:",
callback=callback)
s.setMaximumWidth(60)
s.setAlignment(Qt.AlignRight)
gui.rubber(s.box)
sp = box.sizePolicy()
sp.setControlType(sp.SpinBox)
return box.box
self.k_general = _intbox(self.left, "default_k",
self._default_disc_changed)
self.k_general.layout().setContentsMargins(0, 0, 0, 0)
def manual_cut_editline(text="") -> QLineEdit:
edit = QLineEdit(
text=text,
placeholderText="e.g. 0.0, 0.5, 1.0",
toolTip="Enter fixed discretization cut points (a comma "
"separated list of strictly increasing numbers e.g. "
"0.0, 0.5, 1.0).",
)
@edit.textChanged.connect
def update():
validator = edit.validator()
if validator is not None:
state, _, _ = validator.validate(edit.text(), 0)
else:
state = QValidator.Acceptable
palette = edit.palette()
colors = {
QValidator.Intermediate: (Qt.yellow, Qt.black),
QValidator.Invalid: (Qt.red, Qt.black),
}.get(state, None)
if colors is None:
palette = QPalette()
else:
palette.setColor(QPalette.Base, colors[0])
palette.setColor(QPalette.Text, colors[1])
cr = edit.cursorRect()
p = edit.mapToGlobal(cr.bottomRight())
edit.setPalette(palette)
if state != QValidator.Acceptable and edit.isVisible():
show_tip(edit, p, edit.toolTip(), textFormat=Qt.RichText)
else:
show_tip(edit, p, "")
return edit
self.manual_cuts_edit = manual_cut_editline(
text=", ".join(map(str, self.default_cutpoints)))
def set_manual_default_cuts():
text = self.manual_cuts_edit.text()
self.default_cutpoints = tuple(
float(s.strip()) for s in text.split(",") if s.strip())
self._default_disc_changed()
self.manual_cuts_edit.editingFinished.connect(set_manual_default_cuts)
validator = IncreasingNumbersListValidator()
self.manual_cuts_edit.setValidator(validator)
ibox = gui.indentedBox(right, orientation=Qt.Horizontal)
ibox.layout().addWidget(self.manual_cuts_edit)
right.layout().addStretch(10)
self.left.layout().addStretch(10)
self.connect_control(
"default_cutpoints",
lambda values: self.manual_cuts_edit.setText(", ".join(
map(str, values))))
vlayout = QHBoxLayout()
box = gui.widgetBox(self.controlArea,
"Individual Attribute Settings",
orientation=vlayout,
spacing=8)
# List view with all attributes
self.varview = QListView(
selectionMode=QListView.ExtendedSelection,
uniformItemSizes=True,
)
self.varview.setItemDelegate(DiscDelegate())
self.varmodel = itemmodels.VariableListModel()
self.varview.setModel(self.varmodel)
self.varview.selectionModel().selectionChanged.connect(
self._var_selection_changed)
vlayout.addWidget(self.varview)
# Controls for individual attr settings
self.bbox = controlbox = gui.radioButtons(
box, self, "method", callback=self._disc_method_changed)
vlayout.addWidget(controlbox)
self.variable_button_group = bg = controlbox.findChild(QButtonGroup)
for id_, opt in self.options[:5]:
b = gui.appendRadioButton(controlbox, opt)
bg.setId(b, id_)
self.k_specific = _intbox(controlbox, "k", self._disc_method_changed)
gui.appendRadioButton(controlbox,
"Remove attribute",
id=Methods.Remove)
b = gui.appendRadioButton(controlbox, "Manual", id=Methods.Custom)
self.manual_cuts_specific = manual_cut_editline()
self.manual_cuts_specific.setValidator(validator)
b.toggled[bool].connect(self.manual_cuts_specific.setEnabled)
def set_manual_cuts():
text = self.manual_cuts_specific.text()
points = [t for t in text.split(",") if t.split()]
self.cutpoints = tuple(float(t) for t in points)
self._disc_method_changed()
self.manual_cuts_specific.editingFinished.connect(set_manual_cuts)
self.connect_control(
"cutpoints",
lambda values: self.manual_cuts_specific.setText(", ".join(
map(str, values))))
ibox = gui.indentedBox(controlbox, orientation=Qt.Horizontal)
self.copy_current_to_manual_button = b = FixedSizeButton(
text="CC",
toolTip="Copy the current cut points to manual mode",
enabled=False)
b.clicked.connect(self._copy_to_manual)
ibox.layout().addWidget(self.manual_cuts_specific)
ibox.layout().addWidget(b)
gui.rubber(controlbox)
controlbox.setEnabled(False)
bg.button(self.method)
self.controlbox = controlbox
box = gui.auto_apply(self.controlArea, self, "autosend")
box.button.setFixedWidth(180)
box.layout().insertStretch(0)
self._update_spin_positions()
self.info.set_input_summary(self.info.NoInput)
self.info.set_output_summary(self.info.NoOutput)
@property
def default_method(self) -> Methods:
return Methods[self.default_method_name]
@default_method.setter
def default_method(self, method):
self.set_default_method(method)
def set_default_method(self, method: Methods):
if isinstance(method, int):
method = Methods(method)
else:
method = Methods.from_method(method)
if method != self.default_method:
self.default_method_name = method.name
self.default_button_group.button(method).setChecked(True)
self._default_disc_changed()
@Inputs.data
def set_data(self, data):
self.closeContext()
self.data = data
if self.data is not None:
self._initialize(data)
self.openContext(data)
# Restore the per variable discretization settings
self._restore(self.saved_var_states)
# Complete the induction of cut points
self._update_points()
self.info.set_input_summary(len(data),
format_summary_details(data))
else:
self.info.set_input_summary(self.info.NoInput)
self._clear()
self.unconditional_commit()
def _initialize(self, data):
# Initialize the default variable states for new data.
self.class_var = data.domain.class_var
cvars = [var for var in data.domain.variables if var.is_continuous]
self.varmodel[:] = cvars
has_disc_class = data.domain.has_discrete_class
def set_enabled(box: QWidget, id_: Methods, state: bool):
bg = box.findChild(QButtonGroup)
b = bg.button(id_)
b.setEnabled(state)
set_enabled(self.default_bbox, self.MDL, has_disc_class)
bg = self.bbox.findChild(QButtonGroup)
b = bg.button(Methods.MDL)
b.setEnabled(has_disc_class)
set_enabled(self.bbox, self.MDL, has_disc_class)
# If the newly disabled MDL button is checked then change it
if not has_disc_class and self.default_method == self.MDL:
self.default_method = Methods.Leave
if not has_disc_class and self.method == self.MDL:
self.method = Methods.Default
# Reset (initialize) the variable discretization states.
self._reset()
def _restore(self, saved_state):
# Restore variable states from a saved_state dictionary.
def_method = self._current_default_method()
for i, var in enumerate(self.varmodel):
key = variable_key(var)
if key in saved_state:
state = saved_state[key]
if isinstance(state.method, Default):
state = DState(Default(def_method), None, None)
self._set_var_state(i, state)
def _reset(self):
# restore the individual variable settings back to defaults.
def_method = self._current_default_method()
self.var_state = {}
for i in range(len(self.varmodel)):
state = DState(Default(def_method), None, None)
self._set_var_state(i, state)
def _set_var_state(self, index, state):
# set the state of variable at `index` to `state`.
self.var_state[index] = state
self.varmodel.setData(self.varmodel.index(index), state, Qt.UserRole)
def _clear(self):
self.data = None
self.varmodel[:] = []
self.var_state = {}
self.saved_var_states = {}
self.default_button_group.button(self.MDL).setEnabled(True)
self.variable_button_group.button(self.MDL).setEnabled(True)
def _update_points(self):
"""
Update the induced cut points.
"""
if self.data is None:
return
def induce_cuts(method, data, var):
dvar = _dispatch[type(method)](method, data, var)
if dvar is None:
# removed
return [], None
elif dvar is var:
# no transformation took place
return None, var
elif is_discretized(dvar):
return dvar.compute_value.points, dvar
raise ValueError
for i, var in enumerate(self.varmodel):
state = self.var_state[i]
if state.points is None and state.disc_var is None:
points, dvar = induce_cuts(state.method, self.data, var)
new_state = state._replace(points=points, disc_var=dvar)
self._set_var_state(i, new_state)
def _current_default_method(self):
method = self.default_method
k = self.default_k
if method == Methods.Leave:
def_method = Leave()
elif method == Methods.MDL:
def_method = MDL()
elif method == Methods.EqualFreq:
def_method = EqualFreq(k)
elif method == Methods.EqualWidth:
def_method = EqualWidth(k)
elif method == Methods.Remove:
def_method = Remove()
elif method == Methods.Custom:
def_method = Custom(self.default_cutpoints)
else:
assert False
return def_method
def _current_method(self):
if self.method == Methods.Default:
method = Default(self._current_default_method())
elif self.method == Methods.Leave:
method = Leave()
elif self.method == Methods.MDL:
method = MDL()
elif self.method == Methods.EqualFreq:
method = EqualFreq(self.k)
elif self.method == Methods.EqualWidth:
method = EqualWidth(self.k)
elif self.method == Methods.Remove:
method = Remove()
elif self.method == Methods.Custom:
method = Custom(self.cutpoints)
else:
assert False
return method
def _update_spin_positions(self):
kmethods = [Methods.EqualFreq, Methods.EqualWidth]
self.k_general.setDisabled(self.default_method not in kmethods)
if self.default_method == Methods.EqualFreq:
self.left.layout().insertWidget(1, self.k_general)
elif self.default_method == Methods.EqualWidth:
self.left.layout().insertWidget(2, self.k_general)
self.k_specific.setDisabled(self.method not in kmethods)
if self.method == Methods.EqualFreq:
self.bbox.layout().insertWidget(4, self.k_specific)
elif self.method == Methods.EqualWidth:
self.bbox.layout().insertWidget(5, self.k_specific)
def _default_disc_changed(self):
self._update_spin_positions()
method = self._current_default_method()
state = DState(Default(method), None, None)
for i, _ in enumerate(self.varmodel):
if isinstance(self.var_state[i].method, Default):
self._set_var_state(i, state)
self._update_points()
self.commit()
def _disc_method_changed(self):
self._update_spin_positions()
indices = self.selected_indices()
method = self._current_method()
state = DState(method, None, None)
for idx in indices:
self._set_var_state(idx, state)
self._update_points()
self._copy_to_manual_update_enabled()
self.commit()
def _copy_to_manual(self):
indices = self.selected_indices()
# set of all methods for the current selection
if len(indices) != 1:
return
index = indices[0]
state = self.var_state[index]
var = self.varmodel[index]
fmt = var.repr_val
points = state.points
if points is None:
points = ()
else:
points = tuple(state.points)
state = state._replace(method=Custom(points),
points=None,
disc_var=None)
self._set_var_state(index, state)
self.method = Methods.Custom
self.cutpoints = points
self.manual_cuts_specific.setText(", ".join(map(fmt, points)))
self._update_points()
self.commit()
def _copy_to_manual_update_enabled(self):
indices = self.selected_indices()
methods = [self.var_state[i].method for i in indices]
self.copy_current_to_manual_button.setEnabled(
len(indices) == 1 and not isinstance(methods[0], Custom))
def _var_selection_changed(self, *_):
self._copy_to_manual_update_enabled()
indices = self.selected_indices()
# set of all methods for the current selection
methods = [self.var_state[i].method for i in indices]
def key(method):
if isinstance(method, Default):
return Default, (None, )
return type(method), tuple(method)
mset = list(unique_everseen(methods, key=key))
self.controlbox.setEnabled(len(mset) > 0)
if len(mset) == 1:
method = mset.pop()
self.method = Methods.from_method(method)
if isinstance(method, (EqualFreq, EqualWidth)):
self.k = method.k
elif isinstance(method, Custom):
self.cutpoints = method.points
else:
# deselect the current button
self.method = -1
bg = self.controlbox.group
button_group_reset(bg)
self._update_spin_positions()
def selected_indices(self):
rows = self.varview.selectionModel().selectedRows()
return [index.row() for index in rows]
def method_for_index(self, index):
state = self.var_state[index]
return state.method
def discretized_var(self, index):
# type: (int) -> Optional[Orange.data.DiscreteVariable]
state = self.var_state[index]
if state.disc_var is not None and state.points == []:
# Removed by MDL Entropy
return None
else:
return state.disc_var
def discretized_domain(self):
"""
Return the current effective discretized domain.
"""
if self.data is None:
return None
# a mapping of all applied changes for variables in `varmodel`
mapping = {
var: self.discretized_var(i)
for i, var in enumerate(self.varmodel)
}
def disc_var(source):
return mapping.get(source, source)
# map the full input domain to the new variables (where applicable)
attributes = [disc_var(v) for v in self.data.domain.attributes]
attributes = [v for v in attributes if v is not None]
class_vars = [disc_var(v) for v in self.data.domain.class_vars]
class_vars = [v for v in class_vars if v is not None]
domain = Orange.data.Domain(attributes,
class_vars,
metas=self.data.domain.metas)
return domain
def commit(self):
output = None
if self.data is not None:
domain = self.discretized_domain()
output = self.data.transform(domain)
summary = len(output) if output else self.info.NoOutput
details = format_summary_details(output) if output else ""
self.info.set_output_summary(summary, details)
self.Outputs.data.send(output)
def storeSpecificSettings(self):
super().storeSpecificSettings()
self.saved_var_states = {
variable_key(var): self.var_state[i]._replace(points=None,
disc_var=None)
for i, var in enumerate(self.varmodel)
}
def send_report(self):
self.report_items(
(("Default method", self.options[self.default_method][1]), ))
if self.varmodel:
self.report_items(
"Thresholds",
[(var.name,
DiscDelegate.cutsText(self.var_state[i], var.repr_val)
or "leave numeric") for i, var in enumerate(self.varmodel)])
@classmethod
def migrate_settings(cls, settings, version): # pylint: disable=redefined-outer-name
if version is None or version < 2:
# was stored as int indexing Methods (but offset by 1)
default = settings.pop("default_method", 0)
default = Methods(default + 1)
settings["default_method_name"] = default.name
class OWFeatureConstructor(OWWidget):
name = "特征构造器(Feature Constructor)"
description = "用输入数据集中的现有特征构造新特征。"
icon = "icons/FeatureConstructor.svg"
keywords = ['tezheng', 'gouzao', 'tezhenggouzao']
category = "数据(Data)"
icon = "icons/FeatureConstructor.svg"
class Inputs:
data = Input("数据(Data)", Orange.data.Table, replaces=['Data'])
class Outputs:
data = Output("数据(Data)", Orange.data.Table, replaces=['Data'])
want_main_area = False
settingsHandler = FeatureConstructorHandler()
descriptors = ContextSetting([])
currentIndex = ContextSetting(-1)
expressions_with_values = ContextSetting(False)
settings_version = 2
EDITORS = [(ContinuousDescriptor, ContinuousFeatureEditor),
(DateTimeDescriptor, DateTimeFeatureEditor),
(DiscreteDescriptor, DiscreteFeatureEditor),
(StringDescriptor, StringFeatureEditor)]
class Error(OWWidget.Error):
more_values_needed = Msg("Categorical feature {} needs more values.")
invalid_expressions = Msg("Invalid expressions: {}.")
class Warning(OWWidget.Warning):
renamed_var = Msg("Recently added variable has been renamed, "
"to avoid duplicates.\n")
def __init__(self):
super().__init__()
self.data = None
self.editors = {}
box = gui.vBox(self.controlArea, "变量定义")
toplayout = QHBoxLayout()
toplayout.setContentsMargins(0, 0, 0, 0)
box.layout().addLayout(toplayout)
self.editorstack = QStackedWidget(sizePolicy=QSizePolicy(
QSizePolicy.MinimumExpanding, QSizePolicy.MinimumExpanding))
for descclass, editorclass in self.EDITORS:
editor = editorclass()
editor.featureChanged.connect(self._on_modified)
self.editors[descclass] = editor
self.editorstack.addWidget(editor)
self.editorstack.setEnabled(False)
buttonlayout = QVBoxLayout(spacing=10)
buttonlayout.setContentsMargins(0, 0, 0, 0)
self.addbutton = QPushButton("新建",
toolTip="Create a new variable",
minimumWidth=120,
shortcut=QKeySequence.New)
def unique_name(fmt, reserved):
candidates = (fmt.format(i) for i in count(1))
return next(c for c in candidates if c not in reserved)
def generate_newname(fmt):
return unique_name(fmt, self.reserved_names())
menu = QMenu(self.addbutton)
cont = menu.addAction("数值数据")
cont.triggered.connect(lambda: self.addFeature(
ContinuousDescriptor(generate_newname("X{}"), "", 3)))
disc = menu.addAction("分类数据")
disc.triggered.connect(lambda: self.addFeature(
DiscreteDescriptor(generate_newname("D{}"), "", (), False)))
string = menu.addAction("文本")
string.triggered.connect(lambda: self.addFeature(
StringDescriptor(generate_newname("S{}"), "")))
datetime = menu.addAction("日期/时间")
datetime.triggered.connect(lambda: self.addFeature(
DateTimeDescriptor(generate_newname("T{}"), "")))
menu.addSeparator()
self.duplicateaction = menu.addAction("复制选中变量")
self.duplicateaction.triggered.connect(self.duplicateFeature)
self.duplicateaction.setEnabled(False)
self.addbutton.setMenu(menu)
self.removebutton = QPushButton("删除",
toolTip="删除选中变量",
minimumWidth=120,
shortcut=QKeySequence.Delete)
self.removebutton.clicked.connect(self.removeSelectedFeature)
buttonlayout.addWidget(self.addbutton)
buttonlayout.addWidget(self.removebutton)
buttonlayout.addStretch(10)
toplayout.addLayout(buttonlayout, 0)
toplayout.addWidget(self.editorstack, 10)
# Layout for the list view
layout = QVBoxLayout(spacing=1, margin=0)
self.featuremodel = DescriptorModel(parent=self)
self.featureview = QListView(minimumWidth=200,
minimumHeight=50,
sizePolicy=QSizePolicy(
QSizePolicy.Minimum,
QSizePolicy.MinimumExpanding))
self.featureview.setItemDelegate(FeatureItemDelegate(self))
self.featureview.setModel(self.featuremodel)
self.featureview.selectionModel().selectionChanged.connect(
self._on_selectedVariableChanged)
layout.addWidget(self.featureview)
box.layout().addLayout(layout, 1)
self.fix_button = gui.button(self.buttonsArea,
self,
"Upgrade Expressions",
callback=self.fix_expressions)
self.fix_button.setHidden(True)
gui.button(self.buttonsArea,
self,
"Send",
callback=self.apply,
default=True)
def setCurrentIndex(self, index):
index = min(index, len(self.featuremodel) - 1)
self.currentIndex = index
if index >= 0:
itemmodels.select_row(self.featureview, index)
desc = self.featuremodel[min(index, len(self.featuremodel) - 1)]
editor = self.editors[type(desc)]
self.editorstack.setCurrentWidget(editor)
editor.setEditorData(desc, self.data.domain if self.data else None)
self.editorstack.setEnabled(index >= 0)
self.duplicateaction.setEnabled(index >= 0)
self.removebutton.setEnabled(index >= 0)
def _on_selectedVariableChanged(self, selected, *_):
index = selected_row(self.featureview)
if index is not None:
self.setCurrentIndex(index)
else:
self.setCurrentIndex(-1)
def _on_modified(self):
if self.currentIndex >= 0:
self.Warning.clear()
editor = self.editorstack.currentWidget()
proposed = editor.editorData().name
uniq = get_unique_names(self.reserved_names(self.currentIndex),
proposed)
feature = editor.editorData()
if editor.editorData().name != uniq:
self.Warning.renamed_var()
feature = feature.__class__(uniq, *feature[1:])
self.featuremodel[self.currentIndex] = feature
self.descriptors = list(self.featuremodel)
def setDescriptors(self, descriptors):
"""
Set a list of variable descriptors to edit.
"""
self.descriptors = descriptors
self.featuremodel[:] = list(self.descriptors)
def reserved_names(self, idx_=None):
varnames = []
if self.data is not None:
varnames = [
var.name
for var in self.data.domain.variables + self.data.domain.metas
]
varnames += [
desc.name for idx, desc in enumerate(self.featuremodel)
if idx != idx_
]
return set(varnames)
@Inputs.data
@check_sql_input
def setData(self, data=None):
"""Set the input dataset."""
self.closeContext()
self.data = data
self.expressions_with_values = False
self.descriptors = []
self.currentIndex = -1
if self.data is not None:
self.openContext(data)
# disconnect from the selection model while reseting the model
selmodel = self.featureview.selectionModel()
selmodel.selectionChanged.disconnect(self._on_selectedVariableChanged)
self.featuremodel[:] = list(self.descriptors)
self.setCurrentIndex(self.currentIndex)
selmodel.selectionChanged.connect(self._on_selectedVariableChanged)
self.fix_button.setHidden(not self.expressions_with_values)
self.editorstack.setEnabled(self.currentIndex >= 0)
def handleNewSignals(self):
if self.data is not None:
self.apply()
else:
self.Outputs.data.send(None)
self.fix_button.setHidden(True)
def addFeature(self, descriptor):
self.featuremodel.append(descriptor)
self.setCurrentIndex(len(self.featuremodel) - 1)
editor = self.editorstack.currentWidget()
editor.nameedit.setFocus()
editor.nameedit.selectAll()
def removeFeature(self, index):
del self.featuremodel[index]
index = selected_row(self.featureview)
if index is not None:
self.setCurrentIndex(index)
elif index is None and self.featuremodel.rowCount():
# Deleting the last item clears selection
self.setCurrentIndex(self.featuremodel.rowCount() - 1)
def removeSelectedFeature(self):
if self.currentIndex >= 0:
self.removeFeature(self.currentIndex)
def duplicateFeature(self):
desc = self.featuremodel[self.currentIndex]
self.addFeature(copy.deepcopy(desc))
@staticmethod
def check_attrs_values(attr, data):
for i in range(len(data)):
for var in attr:
if not math.isnan(data[i, var]) \
and int(data[i, var]) >= len(var.values):
return var.name
return None
def _validate_descriptors(self, desc):
def validate(source):
try:
return validate_exp(ast.parse(source, mode="eval"))
# ast.parse can return arbitrary errors, not only SyntaxError
# pylint: disable=broad-except
except Exception:
return False
final = []
invalid = []
for d in desc:
if validate(d.expression):
final.append(d)
else:
final.append(d._replace(expression=""))
invalid.append(d)
if invalid:
self.Error.invalid_expressions(", ".join(s.name for s in invalid))
return final
def apply(self):
def report_error(err):
log = logging.getLogger(__name__)
log.error("", exc_info=True)
self.error("".join(format_exception_only(type(err), err)).rstrip())
self.Error.clear()
if self.data is None:
return
desc = list(self.featuremodel)
desc = self._validate_descriptors(desc)
try:
new_variables = construct_variables(desc, self.data,
self.expressions_with_values)
# user's expression can contain arbitrary errors
except Exception as err: # pylint: disable=broad-except
report_error(err)
return
attrs = [var for var in new_variables if var.is_primitive()]
metas = [var for var in new_variables if not var.is_primitive()]
new_domain = Orange.data.Domain(
self.data.domain.attributes + tuple(attrs),
self.data.domain.class_vars,
metas=self.data.domain.metas + tuple(metas))
try:
for variable in new_variables:
variable.compute_value.mask_exceptions = False
data = self.data.transform(new_domain)
# user's expression can contain arbitrary errors
# pylint: disable=broad-except
except Exception as err:
report_error(err)
return
finally:
for variable in new_variables:
variable.compute_value.mask_exceptions = True
disc_attrs_not_ok = self.check_attrs_values(
[var for var in attrs if var.is_discrete], data)
if disc_attrs_not_ok:
self.Error.more_values_needed(disc_attrs_not_ok)
return
self.Outputs.data.send(data)
def send_report(self):
items = OrderedDict()
for feature in self.featuremodel:
if isinstance(feature, DiscreteDescriptor):
desc = "categorical"
if feature.values:
desc += " with values " \
+ ", ".join(f"'{val}'" for val in feature.values)
if feature.ordered:
desc += "; ordered"
elif isinstance(feature, ContinuousDescriptor):
desc = "numeric"
elif isinstance(feature, DateTimeDescriptor):
desc = "date/time"
else:
desc = "text"
items[feature.name] = f"{feature.expression} ({desc})"
self.report_items(report.plural("Constructed feature{s}", len(items)),
items)
def fix_expressions(self):
dlg = QMessageBox(
QMessageBox.Question, "Fix Expressions",
"This widget's behaviour has changed. Values of categorical "
"variables are now inserted as their textual representations "
"(strings); previously they appeared as integer numbers, with an "
"attribute '.value' that contained the text.\n\n"
"The widget currently runs in compatibility mode. After "
"expressions are updated, manually check for their correctness.")
dlg.addButton("Update", QMessageBox.ApplyRole)
dlg.addButton("Cancel", QMessageBox.RejectRole)
if dlg.exec() == QMessageBox.RejectRole:
return
def fixer(mo):
var = domain[mo.group(2)]
if mo.group(3) == ".value": # uses string; remove `.value`
return "".join(mo.group(1, 2, 4))
# Uses ints: get them by indexing
return mo.group(1) + "{" + \
", ".join(f"'{val}': {i}"
for i, val in enumerate(var.values)) + \
f"}}[{var.name}]" + mo.group(4)
domain = self.data.domain
disc_vars = "|".join(f"{var.name}"
for var in chain(domain.variables, domain.metas)
if var.is_discrete)
expr = re.compile(r"(^|\W)(" + disc_vars + r")(\.value)?(\W|$)")
self.descriptors[:] = [
descriptor._replace(
expression=expr.sub(fixer, descriptor.expression))
for descriptor in self.descriptors
]
self.expressions_with_values = False
self.fix_button.hide()
index = self.currentIndex
self.featuremodel[:] = list(self.descriptors)
self.setCurrentIndex(index)
self.apply()
@classmethod
def migrate_context(cls, context, version):
if version is None or version < 2:
used_vars = set(
chain(*(
freevars(ast.parse(descriptor.expression, mode="eval"), [])
for descriptor in context.values["descriptors"]
if descriptor.expression)))
disc_vars = {
name
for (name, vtype) in chain(context.attributes.items(),
context.metas.items()) if vtype == 1
}
if used_vars & disc_vars:
context.values["expressions_with_values"] = True
class DiscreteVariableEditor(VariableEditor):
"""An editor widget for editing a discrete variable.
Extends the :class:`VariableEditor` to enable editing of
variables values.
"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
form = self.layout().itemAt(0)
assert isinstance(form, QFormLayout)
#: A list model of discrete variable's values.
self.values_model = itemmodels.PyListModel(
flags=Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable
)
vlayout = QVBoxLayout(spacing=1, margin=0)
self.values_edit = QListView(
editTriggers=QListView.DoubleClicked | QListView.EditKeyPressed
)
self.values_edit.setItemDelegate(CategoriesEditDelegate(self))
self.values_edit.setModel(self.values_model)
self.values_model.dataChanged.connect(self.on_values_changed)
self.values_edit.selectionModel().selectionChanged.connect(
self.on_value_selection_changed)
self.values_model.layoutChanged.connect(self.on_value_selection_changed)
self.values_model.rowsMoved.connect(self.on_value_selection_changed)
vlayout.addWidget(self.values_edit)
hlayout = QHBoxLayout(spacing=1, margin=0)
self.categories_action_group = group = QActionGroup(
self, objectName="action-group-categories", enabled=False
)
self.move_value_up = QAction(
"\N{UPWARDS ARROW}", group,
toolTip="向上移动所选项。",
shortcut=QKeySequence(Qt.ControlModifier | Qt.AltModifier |
Qt.Key_BracketLeft),
shortcutContext=Qt.WidgetShortcut,
)
self.move_value_up.triggered.connect(self.move_up)
self.move_value_down = QAction(
"\N{DOWNWARDS ARROW}", group,
toolTip="向下移动所选项。",
shortcut=QKeySequence(Qt.ControlModifier | Qt.AltModifier |
Qt.Key_BracketRight),
shortcutContext=Qt.WidgetShortcut,
)
self.move_value_down.triggered.connect(self.move_down)
self.add_new_item = QAction(
"+", group,
objectName="action-add-item",
toolTip="增加一个新的项。",
shortcut=QKeySequence(QKeySequence.New),
shortcutContext=Qt.WidgetShortcut,
)
self.remove_item = QAction(
"\N{MINUS SIGN}", group,
objectName="action-remove-item",
toolTip="删除选中项。",
shortcut=QKeySequence(QKeySequence.Delete),
shortcutContext=Qt.WidgetShortcut,
)
self.add_new_item.triggered.connect(self._add_category)
self.remove_item.triggered.connect(self._remove_category)
button1 = FixedSizeButton(
self, defaultAction=self.move_value_up,
accessibleName="Move up"
)
button2 = FixedSizeButton(
self, defaultAction=self.move_value_down,
accessibleName="Move down"
)
button3 = FixedSizeButton(
self, defaultAction=self.add_new_item,
accessibleName="Add"
)
button4 = FixedSizeButton(
self, defaultAction=self.remove_item,
accessibleName="Remove"
)
self.values_edit.addActions([self.move_value_up, self.move_value_down,
self.add_new_item, self.remove_item])
hlayout.addWidget(button1)
hlayout.addWidget(button2)
hlayout.addSpacing(3)
hlayout.addWidget(button3)
hlayout.addWidget(button4)
hlayout.addStretch(10)
vlayout.addLayout(hlayout)
form.insertRow(1, "值:", vlayout)
QWidget.setTabOrder(self.name_edit, self.values_edit)
QWidget.setTabOrder(self.values_edit, button1)
QWidget.setTabOrder(button1, button2)
QWidget.setTabOrder(button2, button3)
QWidget.setTabOrder(button3, button4)
def set_data(self, var, transform=()):
# type: (Optional[Categorical], Sequence[Transform]) -> None
"""
Set the variable to edit.
"""
super().set_data(var, transform)
tr = None # type: Optional[CategoriesMapping]
for tr_ in transform:
if isinstance(tr_, CategoriesMapping):
tr = tr_
items = []
if tr is not None:
ci_index = {c: i for i, c in enumerate(var.categories)}
for ci, cj in tr.mapping:
if ci is None and cj is not None:
# level added
item = {
Qt.EditRole: cj,
EditStateRole: ItemEditState.Added,
SourcePosRole: None
}
elif ci is not None and cj is None:
# ci level dropped
item = {
Qt.EditRole: ci,
EditStateRole: ItemEditState.Dropped,
SourcePosRole: ci_index[ci],
SourceNameRole: ci
}
elif ci is not None and cj is not None:
# rename or reorder
item = {
Qt.EditRole: cj,
EditStateRole: ItemEditState.NoState,
SourcePosRole: ci_index[ci],
SourceNameRole: ci
}
else:
assert False, "invalid mapping: {!r}".format(tr.mapping)
items.append(item)
elif var is not None:
items = [
{Qt.EditRole: c,
EditStateRole: ItemEditState.NoState,
SourcePosRole: i,
SourceNameRole: c}
for i, c in enumerate(var.categories)
]
else:
items = []
with disconnected(self.values_model.dataChanged,
self.on_values_changed):
self.values_model.clear()
self.values_model.insertRows(0, len(items))
for i, item in enumerate(items):
self.values_model.setItemData(
self.values_model.index(i, 0),
item
)
self.add_new_item.actionGroup().setEnabled(var is not None)
def __categories_mapping(self):
# type: () -> CategoriesMappingType
model = self.values_model
source = self.var.categories
res = []
for i in range(model.rowCount()):
midx = model.index(i, 0)
category = midx.data(Qt.EditRole)
source_pos = midx.data(SourcePosRole) # type: Optional[int]
if source_pos is not None:
source_name = source[source_pos]
else:
source_name = None
state = midx.data(EditStateRole)
if state == ItemEditState.Dropped:
res.append((source_name, None))
elif state == ItemEditState.Added:
res.append((None, category))
else:
res.append((source_name, category))
return res
def get_data(self):
"""Retrieve the modified variable
"""
var, tr = super().get_data()
if var is None:
return var, tr
mapping = self.__categories_mapping()
if any(_1 != _2 or _2 != _3
for (_1, _2), _3 in zip_longest(mapping, var.categories)):
tr.append(CategoriesMapping(mapping))
return var, tr
def clear(self):
"""Clear the model state.
"""
super().clear()
self.values_model.clear()
def move_rows(self, rows, offset):
if not rows:
return
assert len(rows) == 1
i = rows[0].row()
if offset > 0:
offset += 1
self.values_model.moveRows(QModelIndex(), i, 1, QModelIndex(), i + offset)
self.variable_changed.emit()
def move_up(self):
rows = self.values_edit.selectionModel().selectedRows()
self.move_rows(rows, -1)
def move_down(self):
rows = self.values_edit.selectionModel().selectedRows()
self.move_rows(rows, 1)
@Slot()
def on_values_changed(self):
self.variable_changed.emit()
@Slot()
def on_value_selection_changed(self):
rows = self.values_edit.selectionModel().selectedRows()
if rows:
i = rows[0].row()
self.move_value_up.setEnabled(i)
self.move_value_down.setEnabled(i != self.values_model.rowCount() - 1)
else:
self.move_value_up.setEnabled(False)
self.move_value_down.setEnabled(False)
def _remove_category(self):
"""
Remove the current selected category.
If the item is an existing category present in the source variable it
is marked as removed in the view. But if it was added in the set
transformation it is removed entirely from the model and view.
"""
view = self.values_edit
rows = view.selectionModel().selectedRows(0)
if not rows:
return
assert len(rows) == 1
index = rows[0] # type: QModelIndex
model = index.model()
state = index.data(EditStateRole)
pos = index.data(Qt.UserRole)
if pos is not None and pos >= 0:
# existing level -> only mark/toggle its dropped state
model.setData(
index,
ItemEditState.Dropped if state != ItemEditState.Dropped
else ItemEditState.NoState,
EditStateRole)
elif state == ItemEditState.Added:
# new level -> remove it
model.removeRow(index.row())
else:
assert False, "invalid state '{}' for {}" \
.format(state, index.row())
def _add_category(self):
"""
Add a new category
"""
view = self.values_edit
model = view.model()
with disconnected(model.dataChanged, self.on_values_changed,
Qt.UniqueConnection):
row = model.rowCount()
if not model.insertRow(model.rowCount()):
return
index = model.index(row, 0)
model.setItemData(
index, {
Qt.EditRole: "",
SourcePosRole: None,
EditStateRole: ItemEditState.Added
}
)
view.setCurrentIndex(index)
view.edit(index)
self.on_values_changed()
def showPopup(self):
# type: () -> None
"""
Reimplemented from QComboBox.showPopup
Popup up a customized view and filter edit line.
Note
----
The .popup(), .lineEdit(), .completer() of the base class are not used.
"""
if self.__popup is not None:
# We have user entered state that cannot be disturbed
# (entered filter text, scroll offset, ...)
return # pragma: no cover
if self.count() == 0:
return
opt = QStyleOptionComboBox()
self.initStyleOption(opt)
popup = QListView(
uniformItemSizes=True,
horizontalScrollBarPolicy=Qt.ScrollBarAlwaysOff,
verticalScrollBarPolicy=Qt.ScrollBarAsNeeded,
iconSize=self.iconSize(),
)
popup.setFocusProxy(self.__searchline)
popup.setParent(self, Qt.Popup | Qt.FramelessWindowHint)
popup.setItemDelegate(_ComboBoxListDelegate(popup))
proxy = QSortFilterProxyModel(popup,
filterCaseSensitivity=Qt.CaseInsensitive)
proxy.setFilterKeyColumn(self.modelColumn())
proxy.setSourceModel(self.model())
popup.setModel(proxy)
root = proxy.mapFromSource(self.rootModelIndex())
popup.setRootIndex(root)
self.__popup = popup
self.__proxy = proxy
self.__searchline.setText("")
self.__searchline.setPlaceholderText("Filter...")
self.__searchline.setVisible(True)
self.__searchline.textEdited.connect(proxy.setFilterFixedString)
style = self.style() # type: QStyle
popuprect_origin = style.subControlRect(QStyle.CC_ComboBox, opt,
QStyle.SC_ComboBoxListBoxPopup,
self) # type: QRect
if sys.platform == "darwin":
slmargin = self.__searchline.style() \
.pixelMetric(QStyle.PM_FocusFrameVMargin)
popuprect_origin.adjust(slmargin / 2, 0, -slmargin * 1.5, slmargin)
popuprect_origin = QRect(self.mapToGlobal(popuprect_origin.topLeft()),
popuprect_origin.size())
editrect = style.subControlRect(QStyle.CC_ComboBox, opt,
QStyle.SC_ComboBoxEditField,
self) # type: QRect
self.__searchline.setGeometry(editrect)
desktop = QApplication.desktop()
screenrect = desktop.availableGeometry(self) # type: QRect
# get the height for the view
listrect = QRect()
for i in range(min(proxy.rowCount(root), self.maxVisibleItems())):
index = proxy.index(i, self.modelColumn(), root)
if index.isValid():
listrect = listrect.united(popup.visualRect(index))
if listrect.height() >= screenrect.height():
break
window = popup.window() # type: QWidget
window.ensurePolished()
if window.layout() is not None:
window.layout().activate()
else:
QApplication.sendEvent(window, QEvent(QEvent.LayoutRequest))
margins = qwidget_margin_within(popup.viewport(), window)
height = (listrect.height() + 2 * popup.spacing() + margins.top() +
margins.bottom())
popup_size = (QSize(popuprect_origin.width(), height).expandedTo(
window.minimumSize()).boundedTo(window.maximumSize()).boundedTo(
screenrect.size()))
popuprect = QRect(popuprect_origin.bottomLeft(), popup_size)
popuprect = dropdown_popup_geometry(popuprect, popuprect_origin,
screenrect)
popup.setGeometry(popuprect)
current = proxy.mapFromSource(self.model().index(
self.currentIndex(), self.modelColumn(), self.rootModelIndex()))
popup.setCurrentIndex(current)
popup.scrollTo(current, QAbstractItemView.EnsureVisible)
popup.show()
popup.setFocus(Qt.PopupFocusReason)
popup.installEventFilter(self)
popup.viewport().installEventFilter(self)
popup.viewport().setMouseTracking(True)
self.update()
self.__popupTimer.restart()
class SortedListWidget(QWidget):
sortingOrderChanged = Signal()
class _MyItemDelegate(QStyledItemDelegate):
def __init__(self, sortingModel, parent):
QStyledItemDelegate.__init__(self, parent)
self.sortingModel = sortingModel
def sizeHint(self, option, index):
size = QStyledItemDelegate.sizeHint(self, option, index)
return QSize(size.width(), size.height() + 4)
def createEditor(self, parent, option, index):
cb = QComboBox(parent)
cb.setModel(self.sortingModel)
cb.showPopup()
return cb
def setEditorData(self, editor, index):
pass # TODO: sensible default
def setModelData(self, editor, model, index):
text = editor.currentText()
model.setData(index, text)
def __init__(self, *args):
QWidget.__init__(self, *args)
self.setContentsMargins(0, 0, 0, 0)
gridLayout = QGridLayout()
gridLayout.setContentsMargins(0, 0, 0, 0)
gridLayout.setSpacing(1)
model = QStandardItemModel(self)
model.rowsInserted.connect(self.__changed)
model.rowsRemoved.connect(self.__changed)
model.dataChanged.connect(self.__changed)
self._listView = QListView(self)
self._listView.setModel(model)
# self._listView.setDragEnabled(True)
self._listView.setDropIndicatorShown(True)
self._listView.setDragDropMode(QListView.InternalMove)
self._listView.viewport().setAcceptDrops(True)
self._listView.setMinimumHeight(100)
gridLayout.addWidget(self._listView, 0, 0, 2, 2)
vButtonLayout = QVBoxLayout()
self._upAction = QAction("\u2191", self, toolTip="Move up")
self._upButton = QToolButton(self)
self._upButton.setDefaultAction(self._upAction)
self._upButton.setSizePolicy(QSizePolicy.Fixed,
QSizePolicy.MinimumExpanding)
self._downAction = QAction("\u2193", self, toolTip="Move down")
self._downButton = QToolButton(self)
self._downButton.setDefaultAction(self._downAction)
self._downButton.setSizePolicy(QSizePolicy.Fixed,
QSizePolicy.MinimumExpanding)
vButtonLayout.addWidget(self._upButton)
vButtonLayout.addWidget(self._downButton)
gridLayout.addLayout(vButtonLayout, 0, 2, 2, 1)
hButtonLayout = QHBoxLayout()
self._addAction = QAction("+", self)
self._addButton = QToolButton(self)
self._addButton.setDefaultAction(self._addAction)
self._removeAction = QAction("-", self)
self._removeButton = QToolButton(self)
self._removeButton.setDefaultAction(self._removeAction)
hButtonLayout.addWidget(self._addButton)
hButtonLayout.addWidget(self._removeButton)
hButtonLayout.addStretch(10)
gridLayout.addLayout(hButtonLayout, 2, 0, 1, 2)
self.setLayout(gridLayout)
self._addAction.triggered.connect(self._onAddAction)
self._removeAction.triggered.connect(self._onRemoveAction)
self._upAction.triggered.connect(self._onUpAction)
self._downAction.triggered.connect(self._onDownAction)
def sizeHint(self):
size = QWidget.sizeHint(self)
return QSize(size.width(), 100)
def _onAddAction(self):
item = QStandardItem("")
item.setFlags(item.flags() ^ Qt.ItemIsDropEnabled)
self._listView.model().appendRow(item)
self._listView.setCurrentIndex(item.index())
self._listView.edit(item.index())
def _onRemoveAction(self):
current = self._listView.currentIndex()
self._listView.model().takeRow(current.row())
def _onUpAction(self):
row = self._listView.currentIndex().row()
model = self._listView.model()
if row > 0:
items = model.takeRow(row)
model.insertRow(row - 1, items)
self._listView.setCurrentIndex(model.index(row - 1, 0))
def _onDownAction(self):
row = self._listView.currentIndex().row()
model = self._listView.model()
if row < model.rowCount() and row >= 0:
items = model.takeRow(row)
if row == model.rowCount():
model.appendRow(items)
else:
model.insertRow(row + 1, items)
self._listView.setCurrentIndex(model.index(row + 1, 0))
def setModel(self, model):
""" Set a model to select items from
"""
self._model = model
self._listView.setItemDelegate(self._MyItemDelegate(self._model, self))
def addItem(self, *args):
""" Add a new entry in the list
"""
item = QStandardItem(*args)
item.setFlags(item.flags() ^ Qt.ItemIsDropEnabled)
self._listView.model().appendRow(item)
def setItems(self, items):
self._listView.model().clear()
for item in items:
self.addItem(item)
def items(self):
order = []
for row in range(self._listView.model().rowCount()):
order.append(str(self._listView.model().item(row, 0).text()))
return order
def __changed(self):
self.sortingOrderChanged.emit()
sortingOrder = property(items, setItems)
class DiscreteVariableEditor(VariableEditor):
"""An editor widget for editing a discrete variable.
Extends the :class:`VariableEditor` to enable editing of
variables values.
"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
form = self.layout().itemAt(0)
assert isinstance(form, QFormLayout)
#: A list model of discrete variable's values.
self.values_model = itemmodels.PyListModel(
flags=Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable
)
vlayout = QVBoxLayout(spacing=1, margin=0)
self.values_edit = QListView(
editTriggers=QListView.DoubleClicked | QListView.EditKeyPressed
)
self.values_edit.setItemDelegate(CategoriesEditDelegate(self))
self.values_edit.setModel(self.values_model)
self.values_model.dataChanged.connect(self.on_values_changed)
self.values_edit.selectionModel().selectionChanged.connect(
self.on_value_selection_changed)
self.values_model.layoutChanged.connect(self.on_value_selection_changed)
self.values_model.rowsMoved.connect(self.on_value_selection_changed)
vlayout.addWidget(self.values_edit)
hlayout = QHBoxLayout(spacing=1, margin=0)
self.categories_action_group = group = QActionGroup(
self, objectName="action-group-categories", enabled=False
)
self.move_value_up = QAction(
"\N{UPWARDS ARROW}", group,
toolTip="Move the selected item up.",
shortcut=QKeySequence(Qt.ControlModifier | Qt.AltModifier |
Qt.Key_BracketLeft),
shortcutContext=Qt.WidgetShortcut,
)
self.move_value_up.triggered.connect(self.move_up)
self.move_value_down = QAction(
"\N{DOWNWARDS ARROW}", group,
toolTip="Move the selected item down.",
shortcut=QKeySequence(Qt.ControlModifier | Qt.AltModifier |
Qt.Key_BracketRight),
shortcutContext=Qt.WidgetShortcut,
)
self.move_value_down.triggered.connect(self.move_down)
self.add_new_item = QAction(
"+", group,
objectName="action-add-item",
toolTip="Append a new item.",
shortcut=QKeySequence(QKeySequence.New),
shortcutContext=Qt.WidgetShortcut,
)
self.remove_item = QAction(
"\N{MINUS SIGN}", group,
objectName="action-remove-item",
toolTip="Delete the selected item.",
shortcut=QKeySequence(QKeySequence.Delete),
shortcutContext=Qt.WidgetShortcut,
)
self.add_new_item.triggered.connect(self._add_category)
self.remove_item.triggered.connect(self._remove_category)
button1 = FixedSizeButton(
self, defaultAction=self.move_value_up,
accessibleName="Move up"
)
button2 = FixedSizeButton(
self, defaultAction=self.move_value_down,
accessibleName="Move down"
)
button3 = FixedSizeButton(
self, defaultAction=self.add_new_item,
accessibleName="Add"
)
button4 = FixedSizeButton(
self, defaultAction=self.remove_item,
accessibleName="Remove"
)
self.values_edit.addActions([self.move_value_up, self.move_value_down,
self.add_new_item, self.remove_item])
hlayout.addWidget(button1)
hlayout.addWidget(button2)
hlayout.addSpacing(3)
hlayout.addWidget(button3)
hlayout.addWidget(button4)
hlayout.addStretch(10)
vlayout.addLayout(hlayout)
form.insertRow(1, "Values:", vlayout)
QWidget.setTabOrder(self.name_edit, self.values_edit)
QWidget.setTabOrder(self.values_edit, button1)
QWidget.setTabOrder(button1, button2)
QWidget.setTabOrder(button2, button3)
QWidget.setTabOrder(button3, button4)
def set_data(self, var, transform=()):
# type: (Optional[Categorical], Sequence[Transform]) -> None
"""
Set the variable to edit.
"""
super().set_data(var, transform)
tr = None # type: Optional[CategoriesMapping]
for tr_ in transform:
if isinstance(tr_, CategoriesMapping):
tr = tr_
items = []
if tr is not None:
ci_index = {c: i for i, c in enumerate(var.categories)}
for ci, cj in tr.mapping:
if ci is None and cj is not None:
# level added
item = {
Qt.EditRole: cj,
EditStateRole: ItemEditState.Added,
SourcePosRole: None
}
elif ci is not None and cj is None:
# ci level dropped
item = {
Qt.EditRole: ci,
EditStateRole: ItemEditState.Dropped,
SourcePosRole: ci_index[ci],
SourceNameRole: ci
}
elif ci is not None and cj is not None:
# rename or reorder
item = {
Qt.EditRole: cj,
EditStateRole: ItemEditState.NoState,
SourcePosRole: ci_index[ci],
SourceNameRole: ci
}
else:
assert False, "invalid mapping: {!r}".format(tr.mapping)
items.append(item)
elif var is not None:
items = [
{Qt.EditRole: c,
EditStateRole: ItemEditState.NoState,
SourcePosRole: i,
SourceNameRole: c}
for i, c in enumerate(var.categories)
]
else:
items = []
with disconnected(self.values_model.dataChanged,
self.on_values_changed):
self.values_model.clear()
self.values_model.insertRows(0, len(items))
for i, item in enumerate(items):
self.values_model.setItemData(
self.values_model.index(i, 0),
item
)
self.add_new_item.actionGroup().setEnabled(var is not None)
def __categories_mapping(self):
# type: () -> CategoriesMappingType
model = self.values_model
source = self.var.categories
res = []
for i in range(model.rowCount()):
midx = model.index(i, 0)
category = midx.data(Qt.EditRole)
source_pos = midx.data(SourcePosRole) # type: Optional[int]
if source_pos is not None:
source_name = source[source_pos]
else:
source_name = None
state = midx.data(EditStateRole)
if state == ItemEditState.Dropped:
res.append((source_name, None))
elif state == ItemEditState.Added:
res.append((None, category))
else:
res.append((source_name, category))
return res
def get_data(self):
"""Retrieve the modified variable
"""
var, tr = super().get_data()
if var is None:
return var, tr
mapping = self.__categories_mapping()
if any(_1 != _2 or _2 != _3
for (_1, _2), _3 in zip_longest(mapping, var.categories)):
tr.append(CategoriesMapping(mapping))
return var, tr
def clear(self):
"""Clear the model state.
"""
super().clear()
self.values_model.clear()
def move_rows(self, rows, offset):
if not rows:
return
assert len(rows) == 1
i = rows[0].row()
if offset > 0:
offset += 1
self.values_model.moveRows(QModelIndex(), i, 1, QModelIndex(), i + offset)
self.variable_changed.emit()
def move_up(self):
rows = self.values_edit.selectionModel().selectedRows()
self.move_rows(rows, -1)
def move_down(self):
rows = self.values_edit.selectionModel().selectedRows()
self.move_rows(rows, 1)
@Slot()
def on_values_changed(self):
self.variable_changed.emit()
@Slot()
def on_value_selection_changed(self):
rows = self.values_edit.selectionModel().selectedRows()
if rows:
i = rows[0].row()
self.move_value_up.setEnabled(i)
self.move_value_down.setEnabled(i != self.values_model.rowCount() - 1)
else:
self.move_value_up.setEnabled(False)
self.move_value_down.setEnabled(False)
def _remove_category(self):
"""
Remove the current selected category.
If the item is an existing category present in the source variable it
is marked as removed in the view. But if it was added in the set
transformation it is removed entirely from the model and view.
"""
view = self.values_edit
rows = view.selectionModel().selectedRows(0)
if not rows:
return
assert len(rows) == 1
index = rows[0] # type: QModelIndex
model = index.model()
state = index.data(EditStateRole)
pos = index.data(Qt.UserRole)
if pos is not None and pos >= 0:
# existing level -> only mark/toggle its dropped state
model.setData(
index,
ItemEditState.Dropped if state != ItemEditState.Dropped
else ItemEditState.NoState,
EditStateRole)
elif state == ItemEditState.Added:
# new level -> remove it
model.removeRow(index.row())
else:
assert False, "invalid state '{}' for {}" \
.format(state, index.row())
def _add_category(self):
"""
Add a new category
"""
view = self.values_edit
model = view.model()
with disconnected(model.dataChanged, self.on_values_changed,
Qt.UniqueConnection):
row = model.rowCount()
if not model.insertRow(model.rowCount()):
return
index = model.index(row, 0)
model.setItemData(
index, {
Qt.EditRole: "",
SourcePosRole: None,
EditStateRole: ItemEditState.Added
}
)
view.setCurrentIndex(index)
view.edit(index)
self.on_values_changed()
class OWPythonScript(widget.OWWidget):
name = "Python Script"
description = "Write a Python script and run it on input data or models."
icon = "icons/PythonScript.svg"
priority = 3150
class Inputs:
data = Input("Data",
Table,
replaces=["in_data"],
default=True,
multiple=True)
learner = Input("Learner",
Learner,
replaces=["in_learner"],
default=True,
multiple=True)
classifier = Input("Classifier",
Model,
replaces=["in_classifier"],
default=True,
multiple=True)
object = Input("Object",
object,
replaces=["in_object"],
default=False,
multiple=True)
class Outputs:
data = Output("Data", Table, replaces=["out_data"])
learner = Output("Learner", Learner, replaces=["out_learner"])
classifier = Output("Classifier", Model, replaces=["out_classifier"])
object = Output("Object", object, replaces=["out_object"])
signal_names = ("data", "learner", "classifier", "object")
libraryListSource = Setting(
[Script("Hello world", "print('Hello world')\n")])
currentScriptIndex = Setting(0)
splitterState = Setting(None)
auto_execute = Setting(True)
class Error(OWWidget.Error):
pass
def __init__(self):
super().__init__()
for name in self.signal_names:
setattr(self, name, {})
for s in self.libraryListSource:
s.flags = 0
self._cachedDocuments = {}
self.infoBox = gui.vBox(self.controlArea, "Info")
gui.label(
self.infoBox,
self,
"<p>Execute python script.</p><p>Input variables:<ul><li> " +
"<li>".join(map("in_{0}, in_{0}s".format, self.signal_names)) +
"</ul></p><p>Output variables:<ul><li>" +
"<li>".join(map("out_{0}".format, self.signal_names)) +
"</ul></p>",
)
self.libraryList = itemmodels.PyListModel(
[],
self,
flags=Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable)
self.libraryList.wrap(self.libraryListSource)
self.controlBox = gui.vBox(self.controlArea, "Library")
self.controlBox.layout().setSpacing(1)
self.libraryView = QListView(
editTriggers=QListView.DoubleClicked | QListView.EditKeyPressed,
sizePolicy=QSizePolicy(QSizePolicy.Ignored, QSizePolicy.Preferred),
)
self.libraryView.setItemDelegate(ScriptItemDelegate(self))
self.libraryView.setModel(self.libraryList)
self.libraryView.selectionModel().selectionChanged.connect(
self.onSelectedScriptChanged)
self.controlBox.layout().addWidget(self.libraryView)
w = itemmodels.ModelActionsWidget()
self.addNewScriptAction = action = QAction("+", self)
action.setToolTip("Add a new script to the library")
action.triggered.connect(self.onAddScript)
w.addAction(action)
action = QAction(unicodedata.lookup("MINUS SIGN"), self)
action.setToolTip("Remove script from library")
action.triggered.connect(self.onRemoveScript)
w.addAction(action)
action = QAction("Update", self)
action.setToolTip("Save changes in the editor to library")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.triggered.connect(self.commitChangesToLibrary)
w.addAction(action)
action = QAction("More", self, toolTip="More actions")
new_from_file = QAction("Import Script from File", self)
save_to_file = QAction("Save Selected Script to File", self)
save_to_file.setShortcut(QKeySequence(QKeySequence.SaveAs))
new_from_file.triggered.connect(self.onAddScriptFromFile)
save_to_file.triggered.connect(self.saveScript)
menu = QMenu(w)
menu.addAction(new_from_file)
menu.addAction(save_to_file)
action.setMenu(menu)
button = w.addAction(action)
button.setPopupMode(QToolButton.InstantPopup)
w.layout().setSpacing(1)
self.controlBox.layout().addWidget(w)
auto = gui.auto_commit(
self.controlArea,
self,
"auto_execute",
"Run",
checkbox_label="Autorun on new data",
)
self.execute_button, self.autobox = auto.button, auto.checkbox
self.splitCanvas = QSplitter(Qt.Vertical, self.mainArea)
self.mainArea.layout().addWidget(self.splitCanvas)
self.defaultFont = defaultFont = ("Monaco" if sys.platform == "darwin"
else "Courier")
self.textBox = gui.vBox(self, "Python Script")
self.splitCanvas.addWidget(self.textBox)
self.text = PythonScriptEditor(self)
self.textBox.layout().addWidget(self.text)
self.textBox.setAlignment(Qt.AlignVCenter)
self.text.setTabStopWidth(4)
self.text.modificationChanged[bool].connect(self.onModificationChanged)
self.saveAction = action = QAction("&Save", self.text)
action.setToolTip("Save script to file")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.setShortcutContext(Qt.WidgetWithChildrenShortcut)
action.triggered.connect(self.saveScript)
self.consoleBox = gui.vBox(self, "Console")
self.splitCanvas.addWidget(self.consoleBox)
self.console = PythonConsole({}, self)
self.consoleBox.layout().addWidget(self.console)
self.console.document().setDefaultFont(QFont(defaultFont))
self.consoleBox.setAlignment(Qt.AlignBottom)
self.console.setTabStopWidth(4)
select_row(self.libraryView, self.currentScriptIndex)
self.splitCanvas.setSizes([2, 1])
if self.splitterState is not None:
self.splitCanvas.restoreState(QByteArray(self.splitterState))
self.splitCanvas.splitterMoved[int, int].connect(self.onSpliterMoved)
self.controlArea.layout().addStretch(1)
self.resize(800, 600)
def enable_execute(self):
self.execute_button.setEnabled(True)
def handle_input(self, obj, id, signal):
id = id[0]
dic = getattr(self, signal)
if obj is None:
if id in dic.keys():
del dic[id]
else:
dic[id] = obj
@Inputs.data
def set_data(self, data, id):
self.handle_input(data, id, "data")
@Inputs.learner
def set_learner(self, data, id):
self.handle_input(data, id, "learner")
@Inputs.classifier
def set_classifier(self, data, id):
self.handle_input(data, id, "classifier")
@Inputs.object
def set_object(self, data, id):
self.handle_input(data, id, "object")
def handleNewSignals(self):
self.unconditional_commit()
def selectedScriptIndex(self):
rows = self.libraryView.selectionModel().selectedRows()
if rows:
return [i.row() for i in rows][0]
else:
return None
def setSelectedScript(self, index):
select_row(self.libraryView, index)
def onAddScript(self, *args):
self.libraryList.append(Script("New script", "", 0))
self.setSelectedScript(len(self.libraryList) - 1)
def onAddScriptFromFile(self, *args):
filename, _ = QFileDialog.getOpenFileName(
self,
"Open Python Script",
os.path.expanduser("~/"),
"Python files (*.py)\nAll files(*.*)",
)
if filename:
name = os.path.basename(filename)
# TODO: use `tokenize.detect_encoding`
with open(filename, encoding="utf-8") as f:
contents = f.read()
self.libraryList.append(Script(name, contents, 0, filename))
self.setSelectedScript(len(self.libraryList) - 1)
def onRemoveScript(self, *args):
index = self.selectedScriptIndex()
if index is not None:
del self.libraryList[index]
select_row(self.libraryView, max(index - 1, 0))
def onSaveScriptToFile(self, *args):
index = self.selectedScriptIndex()
if index is not None:
self.saveScript()
def onSelectedScriptChanged(self, selected, deselected):
index = [i.row() for i in selected.indexes()]
if index:
current = index[0]
if current >= len(self.libraryList):
self.addNewScriptAction.trigger()
return
self.text.setDocument(self.documentForScript(current))
self.currentScriptIndex = current
def documentForScript(self, script=0):
if type(script) != Script:
script = self.libraryList[script]
if script not in self._cachedDocuments:
doc = QTextDocument(self)
doc.setDocumentLayout(QPlainTextDocumentLayout(doc))
doc.setPlainText(script.script)
doc.setDefaultFont(QFont(self.defaultFont))
doc.highlighter = PythonSyntaxHighlighter(doc)
doc.modificationChanged[bool].connect(self.onModificationChanged)
doc.setModified(False)
self._cachedDocuments[script] = doc
return self._cachedDocuments[script]
def commitChangesToLibrary(self, *args):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].script = self.text.toPlainText()
self.text.document().setModified(False)
self.libraryList.emitDataChanged(index)
def onModificationChanged(self, modified):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].flags = Script.Modified if modified else 0
self.libraryList.emitDataChanged(index)
def onSpliterMoved(self, pos, ind):
self.splitterState = bytes(self.splitCanvas.saveState())
def updateSelecetdScriptState(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
self.libraryList[index] = Script(script.name,
self.text.toPlainText(), 0)
def saveScript(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
filename = script.filename
else:
filename = os.path.expanduser("~/")
filename, _ = QFileDialog.getSaveFileName(
self, "Save Python Script", filename,
"Python files (*.py)\nAll files(*.*)")
if filename:
fn = ""
head, tail = os.path.splitext(filename)
if not tail:
fn = head + ".py"
else:
fn = filename
f = open(fn, "w")
f.write(self.text.toPlainText())
f.close()
def initial_locals_state(self):
d = {}
for name in self.signal_names:
value = getattr(self, name)
all_values = list(value.values())
one_value = all_values[0] if len(all_values) == 1 else None
d["in_" + name + "s"] = all_values
d["in_" + name] = one_value
return d
def commit(self):
if self.auto_execute:
self.execute_button.setEnabled(False)
self.Error.clear()
self._script = str(self.text.toPlainText())
lcls = self.initial_locals_state()
lcls["_script"] = str(self.text.toPlainText())
self.console.updateLocals(lcls)
self.console.write("\nRunning script:\n")
self.console.push("exec(_script)")
self.console.new_prompt(sys.ps1)
for signal in self.signal_names:
out_var = self.console.locals.get("out_" + signal)
signal_type = getattr(self.Outputs, signal).type
if not isinstance(out_var, signal_type) and out_var is not None:
self.Error.add_message(
signal,
"'{}' has to be an instance of '{}'.".format(
signal, signal_type.__name__),
)
getattr(self.Error, signal)()
out_var = None
getattr(self.Outputs, signal).send(out_var)
class OWPythonScript(widget.OWWidget):
name = "Python Script"
description = "Write a Python script and run it on input data or models."
icon = "icons/PythonScript.svg"
priority = 3150
inputs = [("in_data", Orange.data.Table, "setExampleTable",
widget.Default),
# ("in_distance", Orange.misc.SymMatrix, "setDistanceMatrix",
# widget.Default),
("in_learner", Learner, "setLearner",
widget.Default),
("in_classifier", Model, "setClassifier",
widget.Default),
("in_object", object, "setObject")]
outputs = [("out_data", Orange.data.Table, ),
# ("out_distance", Orange.misc.SymMatrix, ),
("out_learner", Learner, ),
("out_classifier", Model, widget.Dynamic),
("out_object", object, widget.Dynamic)]
libraryListSource = \
Setting([Script("Hello world", "print('Hello world')\n")])
currentScriptIndex = Setting(0)
splitterState = Setting(None)
auto_execute = Setting(False)
def __init__(self):
super().__init__()
self.in_data = None
self.in_distance = None
self.in_learner = None
self.in_classifier = None
self.in_object = None
self.auto_execute = False
for s in self.libraryListSource:
s.flags = 0
self._cachedDocuments = {}
self.infoBox = gui.vBox(self.controlArea, 'Info')
gui.label(
self.infoBox, self,
"<p>Execute python script.</p><p>Input variables:<ul><li> " + \
"<li>".join(t.name for t in self.inputs) + \
"</ul></p><p>Output variables:<ul><li>" + \
"<li>".join(t.name for t in self.outputs) + \
"</ul></p>"
)
self.libraryList = itemmodels.PyListModel(
[], self,
flags=Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable)
self.libraryList.wrap(self.libraryListSource)
self.controlBox = gui.vBox(self.controlArea, 'Library')
self.controlBox.layout().setSpacing(1)
self.libraryView = QListView(
editTriggers=QListView.DoubleClicked |
QListView.EditKeyPressed,
sizePolicy=QSizePolicy(QSizePolicy.Ignored,
QSizePolicy.Preferred)
)
self.libraryView.setItemDelegate(ScriptItemDelegate(self))
self.libraryView.setModel(self.libraryList)
self.libraryView.selectionModel().selectionChanged.connect(
self.onSelectedScriptChanged
)
self.controlBox.layout().addWidget(self.libraryView)
w = itemmodels.ModelActionsWidget()
self.addNewScriptAction = action = QAction("+", self)
action.setToolTip("Add a new script to the library")
action.triggered.connect(self.onAddScript)
w.addAction(action)
action = QAction(unicodedata.lookup("MINUS SIGN"), self)
action.setToolTip("Remove script from library")
action.triggered.connect(self.onRemoveScript)
w.addAction(action)
action = QAction("Update", self)
action.setToolTip("Save changes in the editor to library")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.triggered.connect(self.commitChangesToLibrary)
w.addAction(action)
action = QAction("More", self, toolTip="More actions")
new_from_file = QAction("Import Script from File", self)
save_to_file = QAction("Save Selected Script to File", self)
save_to_file.setShortcut(QKeySequence(QKeySequence.SaveAs))
new_from_file.triggered.connect(self.onAddScriptFromFile)
save_to_file.triggered.connect(self.saveScript)
menu = QMenu(w)
menu.addAction(new_from_file)
menu.addAction(save_to_file)
action.setMenu(menu)
button = w.addAction(action)
button.setPopupMode(QToolButton.InstantPopup)
w.layout().setSpacing(1)
self.controlBox.layout().addWidget(w)
self.execute_button = gui.auto_commit(
self.controlArea, self, "auto_execute", "Execute",
auto_label="Auto Execute")
self.splitCanvas = QSplitter(Qt.Vertical, self.mainArea)
self.mainArea.layout().addWidget(self.splitCanvas)
self.defaultFont = defaultFont = \
"Monaco" if sys.platform == "darwin" else "Courier"
self.textBox = gui.vBox(self, 'Python Script')
self.splitCanvas.addWidget(self.textBox)
self.text = PythonScriptEditor(self)
self.textBox.layout().addWidget(self.text)
self.textBox.setAlignment(Qt.AlignVCenter)
self.text.setTabStopWidth(4)
self.text.modificationChanged[bool].connect(self.onModificationChanged)
self.saveAction = action = QAction("&Save", self.text)
action.setToolTip("Save script to file")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.setShortcutContext(Qt.WidgetWithChildrenShortcut)
action.triggered.connect(self.saveScript)
self.consoleBox = gui.vBox(self, 'Console')
self.splitCanvas.addWidget(self.consoleBox)
self.console = PythonConsole({}, self)
self.consoleBox.layout().addWidget(self.console)
self.console.document().setDefaultFont(QFont(defaultFont))
self.consoleBox.setAlignment(Qt.AlignBottom)
self.console.setTabStopWidth(4)
select_row(self.libraryView, self.currentScriptIndex)
self.splitCanvas.setSizes([2, 1])
if self.splitterState is not None:
self.splitCanvas.restoreState(QByteArray(self.splitterState))
self.splitCanvas.splitterMoved[int, int].connect(self.onSpliterMoved)
self.controlArea.layout().addStretch(1)
self.resize(800, 600)
def setExampleTable(self, et):
self.in_data = et
def setDistanceMatrix(self, dm):
self.in_distance = dm
def setLearner(self, learner):
self.in_learner = learner
def setClassifier(self, classifier):
self.in_classifier = classifier
def setObject(self, obj):
self.in_object = obj
def handleNewSignals(self):
self.unconditional_commit()
def selectedScriptIndex(self):
rows = self.libraryView.selectionModel().selectedRows()
if rows:
return [i.row() for i in rows][0]
else:
return None
def setSelectedScript(self, index):
select_row(self.libraryView, index)
def onAddScript(self, *args):
self.libraryList.append(Script("New script", "", 0))
self.setSelectedScript(len(self.libraryList) - 1)
def onAddScriptFromFile(self, *args):
filename, _ = QFileDialog.getOpenFileName(
self, 'Open Python Script',
os.path.expanduser("~/"),
'Python files (*.py)\nAll files(*.*)'
)
if filename:
name = os.path.basename(filename)
# TODO: use `tokenize.detect_encoding`
with open(filename, encoding="utf-8") as f:
contents = f.read()
self.libraryList.append(Script(name, contents, 0, filename))
self.setSelectedScript(len(self.libraryList) - 1)
def onRemoveScript(self, *args):
index = self.selectedScriptIndex()
if index is not None:
del self.libraryList[index]
select_row(self.libraryView, max(index - 1, 0))
def onSaveScriptToFile(self, *args):
index = self.selectedScriptIndex()
if index is not None:
self.saveScript()
def onSelectedScriptChanged(self, selected, deselected):
index = [i.row() for i in selected.indexes()]
if index:
current = index[0]
if current >= len(self.libraryList):
self.addNewScriptAction.trigger()
return
self.text.setDocument(self.documentForScript(current))
self.currentScriptIndex = current
def documentForScript(self, script=0):
if type(script) != Script:
script = self.libraryList[script]
if script not in self._cachedDocuments:
doc = QTextDocument(self)
doc.setDocumentLayout(QPlainTextDocumentLayout(doc))
doc.setPlainText(script.script)
doc.setDefaultFont(QFont(self.defaultFont))
doc.highlighter = PythonSyntaxHighlighter(doc)
doc.modificationChanged[bool].connect(self.onModificationChanged)
doc.setModified(False)
self._cachedDocuments[script] = doc
return self._cachedDocuments[script]
def commitChangesToLibrary(self, *args):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].script = self.text.toPlainText()
self.text.document().setModified(False)
self.libraryList.emitDataChanged(index)
def onModificationChanged(self, modified):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].flags = Script.Modified if modified else 0
self.libraryList.emitDataChanged(index)
def onSpliterMoved(self, pos, ind):
self.splitterState = bytes(self.splitCanvas.saveState())
def updateSelecetdScriptState(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
self.libraryList[index] = Script(script.name,
self.text.toPlainText(),
0)
def saveScript(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
filename = script.filename
else:
filename = os.path.expanduser("~/")
filename, _ = QFileDialog.getSaveFileName(
self, 'Save Python Script',
filename,
'Python files (*.py)\nAll files(*.*)'
)
if filename:
fn = ""
head, tail = os.path.splitext(filename)
if not tail:
fn = head + ".py"
else:
fn = filename
f = open(fn, 'w')
f.write(self.text.toPlainText())
f.close()
def initial_locals_state(self):
d = dict([(i.name, getattr(self, i.name, None)) for i in self.inputs])
d.update(dict([(o.name, None) for o in self.outputs]))
return d
def commit(self):
self._script = str(self.text.toPlainText())
lcls = self.initial_locals_state()
lcls["_script"] = str(self.text.toPlainText())
self.console.updateLocals(lcls)
self.console.write("\nRunning script:\n")
self.console.push("exec(_script)")
self.console.new_prompt(sys.ps1)
for out in self.outputs:
signal = out.name
self.send(signal, self.console.locals.get(signal, None))
class OWDiscretize(widget.OWWidget):
name = "离散化(Discretize)"
description = "离散化数值数据特征"
icon = "icons/Discretize.svg"
keywords = []
class Inputs:
data = Input("数据(Data)", Orange.data.Table, doc="Input data table", replaces=['Data'])
class Outputs:
data = Output("数据(Data)", Orange.data.Table, doc="Table with discretized features", replaces=['Data'])
settingsHandler = settings.DomainContextHandler()
saved_var_states = settings.ContextSetting({})
default_method = settings.Setting(2)
default_k = settings.Setting(3)
autosend = settings.Setting(True)
#: Discretization methods
Default, Leave, MDL, EqualFreq, EqualWidth, Remove, Custom = range(7)
want_main_area = False
resizing_enabled = False
def __init__(self):
super().__init__()
#: input data
self.data = None
self.class_var = None
#: Current variable discretization state
self.var_state = {}
#: Saved variable discretization settings (context setting)
self.saved_var_states = {}
self.method = 0
self.k = 5
self.cutpoints = []
box = gui.vBox(self.controlArea, self.tr("默认离散化"))
self.default_bbox = rbox = gui.radioButtons(
box, self, "default_method", callback=self._default_disc_changed)
rb = gui.hBox(rbox)
self.left = gui.vBox(rb)
right = gui.vBox(rb)
rb.layout().setStretch(0, 1)
rb.layout().setStretch(1, 1)
options = self.options = [
self.tr("默认"),
self.tr("保留原值"),
self.tr("熵MDL离散化(Entropy-MDL discretization)"),
self.tr("等频离散化(Equal-frequency discretization)"),
self.tr("等宽离散化(Equal-width discretization)"),
self.tr("删除数值变量")
]
for opt in options[1:]:
t = gui.appendRadioButton(rbox, opt)
# This condition is ugly, but it keeps the same order of
# options for backward compatibility of saved schemata
[right, self.left][opt.startswith("Equal")].layout().addWidget(t)
gui.separator(right, 18, 18)
def _intbox(parent, attr, callback):
box = gui.indentedBox(parent)
s = gui.spin(
box, self, attr, minv=2, maxv=10, label="间隔数(Num. of intervals):",
callback=callback)
s.setMaximumWidth(60)
s.setAlignment(Qt.AlignRight)
gui.rubber(s.box)
return box.box
self.k_general = _intbox(self.left, "default_k",
self._default_disc_changed)
self.k_general.layout().setContentsMargins(0, 0, 0, 0)
vlayout = QHBoxLayout()
box = gui.widgetBox(
self.controlArea, "单个属性设置",
orientation=vlayout, spacing=8
)
# List view with all attributes
self.varview = QListView(
selectionMode=QListView.ExtendedSelection,
uniformItemSizes=True,
)
self.varview.setItemDelegate(DiscDelegate())
self.varmodel = itemmodels.VariableListModel()
self.varview.setModel(self.varmodel)
self.varview.selectionModel().selectionChanged.connect(
self._var_selection_changed
)
vlayout.addWidget(self.varview)
# Controls for individual attr settings
self.bbox = controlbox = gui.radioButtons(
box, self, "method", callback=self._disc_method_changed
)
vlayout.addWidget(controlbox)
for opt in options[:5]:
gui.appendRadioButton(controlbox, opt)
self.k_specific = _intbox(controlbox, "k", self._disc_method_changed)
gui.appendRadioButton(controlbox, "删除属性")
gui.rubber(controlbox)
controlbox.setEnabled(False)
self.controlbox = controlbox
box = gui.auto_apply(self.controlArea, self, "autosend")
box.button.setFixedWidth(180)
box.layout().insertStretch(0)
self._update_spin_positions()
self.info.set_input_summary(self.info.NoInput)
self.info.set_output_summary(self.info.NoOutput)
@Inputs.data
def set_data(self, data):
self.closeContext()
self.data = data
if self.data is not None:
self._initialize(data)
self.openContext(data)
# Restore the per variable discretization settings
self._restore(self.saved_var_states)
# Complete the induction of cut points
self._update_points()
self.info.set_input_summary(len(data))
else:
self.info.set_input_summary(self.info.NoInput)
self._clear()
self.unconditional_commit()
def _initialize(self, data):
# Initialize the default variable states for new data.
self.class_var = data.domain.class_var
cvars = [var for var in data.domain.variables
if var.is_continuous]
self.varmodel[:] = cvars
has_disc_class = data.domain.has_discrete_class
self.default_bbox.buttons[self.MDL - 1].setEnabled(has_disc_class)
self.bbox.buttons[self.MDL].setEnabled(has_disc_class)
# If the newly disabled MDL button is checked then change it
if not has_disc_class and self.default_method == self.MDL - 1:
self.default_method = 0
if not has_disc_class and self.method == self.MDL:
self.method = 0
# Reset (initialize) the variable discretization states.
self._reset()
def _restore(self, saved_state):
# Restore variable states from a saved_state dictionary.
def_method = self._current_default_method()
for i, var in enumerate(self.varmodel):
key = variable_key(var)
if key in saved_state:
state = saved_state[key]
if isinstance(state.method, Default):
state = DState(Default(def_method), None, None)
self._set_var_state(i, state)
def _reset(self):
# restore the individual variable settings back to defaults.
def_method = self._current_default_method()
self.var_state = {}
for i in range(len(self.varmodel)):
state = DState(Default(def_method), None, None)
self._set_var_state(i, state)
def _set_var_state(self, index, state):
# set the state of variable at `index` to `state`.
self.var_state[index] = state
self.varmodel.setData(self.varmodel.index(index), state, Qt.UserRole)
def _clear(self):
self.data = None
self.varmodel[:] = []
self.var_state = {}
self.saved_var_states = {}
self.default_bbox.buttons[self.MDL - 1].setEnabled(True)
self.bbox.buttons[self.MDL].setEnabled(True)
def _update_points(self):
"""
Update the induced cut points.
"""
if self.data is None or not len(self.data):
return
def induce_cuts(method, data, var):
dvar = _dispatch[type(method)](method, data, var)
if dvar is None:
# removed
return [], None
elif dvar is var:
# no transformation took place
return None, var
elif is_discretized(dvar):
return dvar.compute_value.points, dvar
assert False
return None
for i, var in enumerate(self.varmodel):
state = self.var_state[i]
if state.points is None and state.disc_var is None:
points, dvar = induce_cuts(state.method, self.data, var)
new_state = state._replace(points=points, disc_var=dvar)
self._set_var_state(i, new_state)
@staticmethod
def _method_index(method):
return METHODS.index((type(method), ))
def _current_default_method(self):
method = self.default_method + 1
k = self.default_k
if method == OWDiscretize.Leave:
def_method = Leave()
elif method == OWDiscretize.MDL:
def_method = MDL()
elif method == OWDiscretize.EqualFreq:
def_method = EqualFreq(k)
elif method == OWDiscretize.EqualWidth:
def_method = EqualWidth(k)
elif method == OWDiscretize.Remove:
def_method = Remove()
else:
assert False
return def_method
def _current_method(self):
if self.method == OWDiscretize.Default:
method = Default(self._current_default_method())
elif self.method == OWDiscretize.Leave:
method = Leave()
elif self.method == OWDiscretize.MDL:
method = MDL()
elif self.method == OWDiscretize.EqualFreq:
method = EqualFreq(self.k)
elif self.method == OWDiscretize.EqualWidth:
method = EqualWidth(self.k)
elif self.method == OWDiscretize.Remove:
method = Remove()
elif self.method == OWDiscretize.Custom:
method = Custom(self.cutpoints)
else:
assert False
return method
def _update_spin_positions(self):
self.k_general.setDisabled(self.default_method not in [2, 3])
if self.default_method == 2:
self.left.layout().insertWidget(1, self.k_general)
elif self.default_method == 3:
self.left.layout().insertWidget(2, self.k_general)
self.k_specific.setDisabled(self.method not in [3, 4])
if self.method == 3:
self.bbox.layout().insertWidget(4, self.k_specific)
elif self.method == 4:
self.bbox.layout().insertWidget(5, self.k_specific)
def _default_disc_changed(self):
self._update_spin_positions()
method = self._current_default_method()
state = DState(Default(method), None, None)
for i, _ in enumerate(self.varmodel):
if isinstance(self.var_state[i].method, Default):
self._set_var_state(i, state)
self._update_points()
self.commit()
def _disc_method_changed(self):
self._update_spin_positions()
indices = self.selected_indices()
method = self._current_method()
state = DState(method, None, None)
for idx in indices:
self._set_var_state(idx, state)
self._update_points()
self.commit()
def _var_selection_changed(self, *_):
indices = self.selected_indices()
# set of all methods for the current selection
methods = [self.var_state[i].method for i in indices]
mset = set(methods)
self.controlbox.setEnabled(len(mset) > 0)
if len(mset) == 1:
method = mset.pop()
self.method = self._method_index(method)
if isinstance(method, (EqualFreq, EqualWidth)):
self.k = method.k
elif isinstance(method, Custom):
self.cutpoints = method.points
else:
# deselect the current button
self.method = -1
bg = self.controlbox.group
button_group_reset(bg)
self._update_spin_positions()
def selected_indices(self):
rows = self.varview.selectionModel().selectedRows()
return [index.row() for index in rows]
def discretized_var(self, index):
# type: (int) -> Optional[Orange.data.DiscreteVariable]
state = self.var_state[index]
if state.disc_var is not None and state.points == []:
# Removed by MDL Entropy
return None
else:
return state.disc_var
def discretized_domain(self):
"""
Return the current effective discretized domain.
"""
if self.data is None:
return None
# a mapping of all applied changes for variables in `varmodel`
mapping = {var: self.discretized_var(i)
for i, var in enumerate(self.varmodel)}
def disc_var(source):
return mapping.get(source, source)
# map the full input domain to the new variables (where applicable)
attributes = [disc_var(v) for v in self.data.domain.attributes]
attributes = [v for v in attributes if v is not None]
class_vars = [disc_var(v) for v in self.data.domain.class_vars]
class_vars = [v for v in class_vars if v is not None]
domain = Orange.data.Domain(
attributes, class_vars, metas=self.data.domain.metas
)
return domain
def commit(self):
output = None
if self.data is not None and len(self.data):
domain = self.discretized_domain()
output = self.data.transform(domain)
self.info.set_output_summary(len(output))
else:
self.info.set_output_summary(self.info.NoOutput)
self.Outputs.data.send(output)
def storeSpecificSettings(self):
super().storeSpecificSettings()
self.saved_var_states = {
variable_key(var):
self.var_state[i]._replace(points=None, disc_var=None)
for i, var in enumerate(self.varmodel)
}
def send_report(self):
self.report_items((
("Default method", self.options[self.default_method + 1]),))
if self.varmodel:
self.report_items("Thresholds", [
(var.name,
DiscDelegate.cutsText(self.var_state[i]) or "leave numeric")
for i, var in enumerate(self.varmodel)])
class OWImpute(OWWidget):
name = "Impute"
description = "Impute missing values in the data table."
icon = "icons/Impute.svg"
priority = 2130
class Inputs:
data = Input("Data", Orange.data.Table)
learner = Input("Learner", Learner)
class Outputs:
data = Output("Data", Orange.data.Table)
class Error(OWWidget.Error):
imputation_failed = Msg("Imputation failed for '{}'")
model_based_imputer_sparse = Msg("Model based imputer does not work for sparse data")
DEFAULT_LEARNER = SimpleTreeLearner()
METHODS = [AsDefault(), impute.DoNotImpute(), impute.Average(),
impute.AsValue(), impute.Model(DEFAULT_LEARNER), impute.Random(),
impute.DropInstances(), impute.Default()]
DEFAULT, DO_NOT_IMPUTE, MODEL_BASED_IMPUTER, AS_INPUT = 0, 1, 4, 7
settingsHandler = settings.DomainContextHandler()
_default_method_index = settings.Setting(DO_NOT_IMPUTE)
variable_methods = settings.ContextSetting({})
autocommit = settings.Setting(True)
want_main_area = False
resizing_enabled = False
def __init__(self):
super().__init__()
# copy METHODS (some are modified by the widget)
self.methods = copy.deepcopy(OWImpute.METHODS)
main_layout = QVBoxLayout()
main_layout.setContentsMargins(10, 10, 10, 10)
self.controlArea.layout().addLayout(main_layout)
box = QGroupBox(title=self.tr("Default Method"), flat=False)
box_layout = QVBoxLayout(box)
main_layout.addWidget(box)
button_group = QButtonGroup()
button_group.buttonClicked[int].connect(self.set_default_method)
for i, method in enumerate(self.methods):
if not method.columns_only:
button = QRadioButton(method.name)
button.setChecked(i == self.default_method_index)
button_group.addButton(button, i)
box_layout.addWidget(button)
self.default_button_group = button_group
box = QGroupBox(title=self.tr("Individual Attribute Settings"),
flat=False)
main_layout.addWidget(box)
horizontal_layout = QHBoxLayout(box)
main_layout.addWidget(box)
self.varview = QListView(
selectionMode=QListView.ExtendedSelection
)
self.varview.setItemDelegate(DisplayFormatDelegate())
self.varmodel = itemmodels.VariableListModel()
self.varview.setModel(self.varmodel)
self.varview.selectionModel().selectionChanged.connect(
self._on_var_selection_changed
)
self.selection = self.varview.selectionModel()
horizontal_layout.addWidget(self.varview)
method_layout = QVBoxLayout()
horizontal_layout.addLayout(method_layout)
button_group = QButtonGroup()
for i, method in enumerate(self.methods):
button = QRadioButton(text=method.name)
button_group.addButton(button, i)
method_layout.addWidget(button)
self.value_combo = QComboBox(
minimumContentsLength=8,
sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLength,
activated=self._on_value_selected
)
self.value_double = QDoubleSpinBox(
editingFinished=self._on_value_selected,
minimum=-1000., maximum=1000., singleStep=.1, decimals=3,
)
self.value_stack = value_stack = QStackedWidget()
value_stack.addWidget(self.value_combo)
value_stack.addWidget(self.value_double)
method_layout.addWidget(value_stack)
button_group.buttonClicked[int].connect(
self.set_method_for_current_selection
)
method_layout.addStretch(2)
reset_button = QPushButton(
"Restore All to Default", checked=False, checkable=False,
clicked=self.reset_variable_methods, default=False,
autoDefault=False)
method_layout.addWidget(reset_button)
self.variable_button_group = button_group
box = gui.auto_commit(
self.controlArea, self, "autocommit", "Apply",
orientation=Qt.Horizontal, checkbox_label="Apply automatically")
box.layout().insertSpacing(0, 80)
box.layout().insertWidget(0, self.report_button)
self.data = None
self.learner = None
self.modified = False
self.default_method = self.methods[self.default_method_index]
self.executor = qconcurrent.ThreadExecutor(self)
self.__task = None
@property
def default_method_index(self):
return self._default_method_index
@default_method_index.setter
def default_method_index(self, index):
if self._default_method_index != index:
self._default_method_index = index
self.default_button_group.button(index).setChecked(True)
self.default_method = self.methods[self.default_method_index]
self.methods[self.DEFAULT].method = self.default_method
# update variable view
for index in map(self.varmodel.index, range(len(self.varmodel))):
method = self.variable_methods.get(
index.row(), self.methods[self.DEFAULT])
self.varmodel.setData(index, method, Qt.UserRole)
self._invalidate()
def set_default_method(self, index):
"""Set the current selected default imputation method.
"""
self.default_method_index = index
@Inputs.data
@check_sql_input
def set_data(self, data):
self.closeContext()
self.varmodel[:] = []
self.variable_methods = {}
self.modified = False
self.data = data
if data is not None:
self.varmodel[:] = data.domain.variables
self.openContext(data.domain)
self.update_varview()
self.unconditional_commit()
@Inputs.learner
def set_learner(self, learner):
self.learner = learner or self.DEFAULT_LEARNER
imputer = self.methods[self.MODEL_BASED_IMPUTER]
imputer.learner = self.learner
button = self.default_button_group.button(self.MODEL_BASED_IMPUTER)
button.setText(imputer.name)
variable_button = self.variable_button_group.button(self.MODEL_BASED_IMPUTER)
variable_button.setText(imputer.name)
if learner is not None:
self.default_method_index = self.MODEL_BASED_IMPUTER
self.update_varview()
self.commit()
def get_method_for_column(self, column_index):
"""Returns the imputation method for column by its index.
"""
if not isinstance(column_index, int):
column_index = column_index.row()
return self.variable_methods.get(column_index,
self.methods[self.DEFAULT])
def _invalidate(self):
self.modified = True
if self.__task is not None:
self.cancel()
self.commit()
def commit(self):
self.cancel()
self.warning()
self.Error.imputation_failed.clear()
self.Error.model_based_imputer_sparse.clear()
if self.data is None or len(self.data) == 0 or len(self.varmodel) == 0:
self.Outputs.data.send(self.data)
self.modified = False
return
data = self.data
impute_state = [
(i, var, self.variable_methods.get(i, self.default_method))
for i, var in enumerate(self.varmodel)
]
def impute_one(method, var, data):
# type: (impute.BaseImputeMethod, Variable, Table) -> Any
if isinstance(method, impute.Model) and data.is_sparse():
raise SparseNotSupported()
elif isinstance(method, impute.DropInstances):
return RowMask(method(data, var))
elif not method.supports_variable(var):
raise VariableNotSupported(var)
else:
return method(data, var)
futures = []
for _, var, method in impute_state:
f = self.executor.submit(
impute_one, copy.deepcopy(method), var, data)
futures.append(f)
w = qconcurrent.FutureSetWatcher(futures)
w.doneAll.connect(self.__commit_finish)
w.progressChanged.connect(self.__progress_changed)
self.__task = Task(futures, w)
self.progressBarInit(processEvents=False)
self.setBlocking(True)
@Slot()
def __commit_finish(self):
assert QThread.currentThread() is self.thread()
assert self.__task is not None
futures = self.__task.futures
assert len(futures) == len(self.varmodel)
assert self.data is not None
self.__task = None
self.setBlocking(False)
self.progressBarFinished()
data = self.data
attributes = []
class_vars = []
drop_mask = np.zeros(len(self.data), bool)
for i, (var, fut) in enumerate(zip(self.varmodel, futures)):
assert fut.done()
newvar = []
try:
res = fut.result()
except SparseNotSupported:
self.Error.model_based_imputer_sparse()
# ?? break
except VariableNotSupported:
self.warning("Default method can not handle '{}'".
format(var.name))
except Exception: # pylint: disable=broad-except
log = logging.getLogger(__name__)
log.info("Error for %s", var, exc_info=True)
self.Error.imputation_failed(var.name)
attributes = class_vars = None
break
else:
if isinstance(res, RowMask):
drop_mask |= res.mask
newvar = var
else:
newvar = res
if isinstance(newvar, Orange.data.Variable):
newvar = [newvar]
if i < len(data.domain.attributes):
attributes.extend(newvar)
else:
class_vars.extend(newvar)
if attributes is None:
data = None
else:
domain = Orange.data.Domain(attributes, class_vars,
data.domain.metas)
try:
data = self.data.from_table(domain, data[~drop_mask])
except Exception: # pylint: disable=broad-except
log = logging.getLogger(__name__)
log.info("Error", exc_info=True)
self.Error.imputation_failed("Unknown")
data = None
self.Outputs.data.send(data)
self.modified = False
@Slot(int, int)
def __progress_changed(self, n, d):
assert QThread.currentThread() is self.thread()
assert self.__task is not None
self.progressBarSet(100. * n / d)
def cancel(self):
if self.__task is not None:
task, self.__task = self.__task, None
task.cancel()
task.watcher.doneAll.disconnect(self.__commit_finish)
task.watcher.progressChanged.disconnect(self.__progress_changed)
concurrent.futures.wait(task.futures)
task.watcher.flush()
self.progressBarFinished()
self.setBlocking(False)
def onDeleteWidget(self):
self.cancel()
super().onDeleteWidget()
def send_report(self):
specific = []
for i, var in enumerate(self.varmodel):
method = self.variable_methods.get(i, None)
if method is not None:
specific.append("{} ({})".format(var.name, str(method)))
default = self.default_method.name
if specific:
self.report_items((
("Default method", default),
("Specific imputers", ", ".join(specific))
))
else:
self.report_items((("Method", default),))
def _on_var_selection_changed(self):
indexes = self.selection.selectedIndexes()
methods = [self.get_method_for_column(i.row()) for i in indexes]
def method_key(method):
"""
Decompose method into its type and parameters.
"""
# The return value should be hashable and __eq__ comparable
if isinstance(method, AsDefault):
return AsDefault, (method.method,)
elif isinstance(method, impute.Model):
return impute.Model, (method.learner,)
elif isinstance(method, impute.Default):
return impute.Default, (method.default,)
else:
return type(method), None
methods = set(method_key(m) for m in methods)
selected_vars = [self.varmodel[index.row()] for index in indexes]
has_discrete = any(var.is_discrete for var in selected_vars)
fixed_value = None
value_stack_enabled = False
current_value_widget = None
if len(methods) == 1:
method_type, parameters = methods.pop()
for i, m in enumerate(self.methods):
if method_type == type(m):
self.variable_button_group.button(i).setChecked(True)
if method_type is impute.Default:
(fixed_value,) = parameters
elif self.variable_button_group.checkedButton() is not None:
# Uncheck the current button
self.variable_button_group.setExclusive(False)
self.variable_button_group.checkedButton().setChecked(False)
self.variable_button_group.setExclusive(True)
assert self.variable_button_group.checkedButton() is None
for method, button in zip(self.methods,
self.variable_button_group.buttons()):
enabled = all(method.supports_variable(var) for var in
selected_vars)
button.setEnabled(enabled)
if not has_discrete:
value_stack_enabled = True
current_value_widget = self.value_double
elif len(selected_vars) == 1:
value_stack_enabled = True
current_value_widget = self.value_combo
self.value_combo.clear()
self.value_combo.addItems(selected_vars[0].values)
else:
value_stack_enabled = False
current_value_widget = None
self.variable_button_group.button(self.AS_INPUT).setEnabled(False)
self.value_stack.setEnabled(value_stack_enabled)
if current_value_widget is not None:
self.value_stack.setCurrentWidget(current_value_widget)
if fixed_value is not None:
if current_value_widget is self.value_combo:
self.value_combo.setCurrentIndex(fixed_value)
elif current_value_widget is self.value_double:
self.value_double.setValue(fixed_value)
else:
assert False
def set_method_for_current_selection(self, method_index):
indexes = self.selection.selectedIndexes()
self.set_method_for_indexes(indexes, method_index)
def set_method_for_indexes(self, indexes, method_index):
if method_index == self.DEFAULT:
for index in indexes:
self.variable_methods.pop(index.row(), None)
elif method_index == OWImpute.AS_INPUT:
current = self.value_stack.currentWidget()
if current is self.value_combo:
value = self.value_combo.currentIndex()
else:
value = self.value_double.value()
for index in indexes:
method = impute.Default(default=value)
self.variable_methods[index.row()] = method
else:
method = self.methods[method_index]
for index in indexes:
self.variable_methods[index.row()] = method
self.update_varview(indexes)
self._invalidate()
def update_varview(self, indexes=None):
if indexes is None:
indexes = map(self.varmodel.index, range(len(self.varmodel)))
for index in indexes:
self.varmodel.setData(index, self.get_method_for_column(index.row()), Qt.UserRole)
def _on_value_selected(self):
# The fixed 'Value' in the widget has been changed by the user.
self.variable_button_group.button(self.AS_INPUT).setChecked(True)
self.set_method_for_current_selection(self.AS_INPUT)
def reset_variable_methods(self):
indexes = list(map(self.varmodel.index, range(len(self.varmodel))))
self.set_method_for_indexes(indexes, self.DEFAULT)
self.variable_button_group.button(self.DEFAULT).setChecked(True)
class OWFeatureConstructor(OWWidget):
name = "Feature Constructor"
description = "Construct new features (data columns) from a set of " \
"existing features in the input dataset."
icon = "icons/FeatureConstructor.svg"
keywords = []
class Inputs:
data = Input("Data", Orange.data.Table)
class Outputs:
data = Output("Data", Orange.data.Table)
want_main_area = False
settingsHandler = FeatureConstructorHandler()
descriptors = ContextSetting([])
currentIndex = ContextSetting(-1)
EDITORS = [(ContinuousDescriptor, ContinuousFeatureEditor),
(DateTimeDescriptor, DateTimeFeatureEditor),
(DiscreteDescriptor, DiscreteFeatureEditor),
(StringDescriptor, StringFeatureEditor)]
class Error(OWWidget.Error):
more_values_needed = Msg("Categorical feature {} needs more values.")
invalid_expressions = Msg("Invalid expressions: {}.")
def __init__(self):
super().__init__()
self.data = None
self.editors = {}
box = gui.vBox(self.controlArea, "Variable Definitions")
toplayout = QHBoxLayout()
toplayout.setContentsMargins(0, 0, 0, 0)
box.layout().addLayout(toplayout)
self.editorstack = QStackedWidget(sizePolicy=QSizePolicy(
QSizePolicy.MinimumExpanding, QSizePolicy.MinimumExpanding))
for descclass, editorclass in self.EDITORS:
editor = editorclass()
editor.featureChanged.connect(self._on_modified)
self.editors[descclass] = editor
self.editorstack.addWidget(editor)
self.editorstack.setEnabled(False)
buttonlayout = QVBoxLayout(spacing=10)
buttonlayout.setContentsMargins(0, 0, 0, 0)
self.addbutton = QPushButton("New",
toolTip="Create a new variable",
minimumWidth=120,
shortcut=QKeySequence.New)
def unique_name(fmt, reserved):
candidates = (fmt.format(i) for i in count(1))
return next(c for c in candidates if c not in reserved)
def reserved_names():
varnames = []
if self.data is not None:
varnames = [
var.name for var in self.data.domain.variables +
self.data.domain.metas
]
varnames += [desc.name for desc in self.featuremodel]
return set(varnames)
def generate_newname(fmt):
return unique_name(fmt, reserved_names())
menu = QMenu(self.addbutton)
cont = menu.addAction("Numeric")
cont.triggered.connect(lambda: self.addFeature(
ContinuousDescriptor(generate_newname("X{}"), "", 3)))
disc = menu.addAction("Categorical")
disc.triggered.connect(lambda: self.addFeature(
DiscreteDescriptor(generate_newname("D{}"), "", (), False)))
string = menu.addAction("Text")
string.triggered.connect(lambda: self.addFeature(
StringDescriptor(generate_newname("S{}"), "")))
datetime = menu.addAction("Date/Time")
datetime.triggered.connect(lambda: self.addFeature(
DateTimeDescriptor(generate_newname("T{}"), "")))
menu.addSeparator()
self.duplicateaction = menu.addAction("Duplicate Selected Variable")
self.duplicateaction.triggered.connect(self.duplicateFeature)
self.duplicateaction.setEnabled(False)
self.addbutton.setMenu(menu)
self.removebutton = QPushButton("Remove",
toolTip="Remove selected variable",
minimumWidth=120,
shortcut=QKeySequence.Delete)
self.removebutton.clicked.connect(self.removeSelectedFeature)
buttonlayout.addWidget(self.addbutton)
buttonlayout.addWidget(self.removebutton)
buttonlayout.addStretch(10)
toplayout.addLayout(buttonlayout, 0)
toplayout.addWidget(self.editorstack, 10)
# Layout for the list view
layout = QVBoxLayout(spacing=1, margin=0)
self.featuremodel = DescriptorModel(parent=self)
self.featureview = QListView(minimumWidth=200,
sizePolicy=QSizePolicy(
QSizePolicy.Minimum,
QSizePolicy.MinimumExpanding))
self.featureview.setItemDelegate(FeatureItemDelegate(self))
self.featureview.setModel(self.featuremodel)
self.featureview.selectionModel().selectionChanged.connect(
self._on_selectedVariableChanged)
layout.addWidget(self.featureview)
box.layout().addLayout(layout, 1)
box = gui.hBox(self.controlArea)
gui.rubber(box)
commit = gui.button(box,
self,
"Send",
callback=self.apply,
default=True)
commit.setMinimumWidth(180)
def setCurrentIndex(self, index):
index = min(index, len(self.featuremodel) - 1)
self.currentIndex = index
if index >= 0:
itemmodels.select_row(self.featureview, index)
desc = self.featuremodel[min(index, len(self.featuremodel) - 1)]
editor = self.editors[type(desc)]
self.editorstack.setCurrentWidget(editor)
editor.setEditorData(desc, self.data.domain if self.data else None)
self.editorstack.setEnabled(index >= 0)
self.duplicateaction.setEnabled(index >= 0)
self.removebutton.setEnabled(index >= 0)
def _on_selectedVariableChanged(self, selected, *_):
index = selected_row(self.featureview)
if index is not None:
self.setCurrentIndex(index)
else:
self.setCurrentIndex(-1)
def _on_modified(self):
if self.currentIndex >= 0:
editor = self.editorstack.currentWidget()
self.featuremodel[self.currentIndex] = editor.editorData()
self.descriptors = list(self.featuremodel)
def setDescriptors(self, descriptors):
"""
Set a list of variable descriptors to edit.
"""
self.descriptors = descriptors
self.featuremodel[:] = list(self.descriptors)
@Inputs.data
@check_sql_input
def setData(self, data=None):
"""Set the input dataset."""
self.closeContext()
self.data = data
if self.data is not None:
descriptors = list(self.descriptors)
currindex = self.currentIndex
self.descriptors = []
self.currentIndex = -1
self.openContext(data)
if descriptors != self.descriptors or \
self.currentIndex != currindex:
# disconnect from the selection model while reseting the model
selmodel = self.featureview.selectionModel()
selmodel.selectionChanged.disconnect(
self._on_selectedVariableChanged)
self.featuremodel[:] = list(self.descriptors)
self.setCurrentIndex(self.currentIndex)
selmodel.selectionChanged.connect(
self._on_selectedVariableChanged)
self.editorstack.setEnabled(self.currentIndex >= 0)
def handleNewSignals(self):
if self.data is not None:
self.apply()
else:
self.Outputs.data.send(None)
def addFeature(self, descriptor):
self.featuremodel.append(descriptor)
self.setCurrentIndex(len(self.featuremodel) - 1)
editor = self.editorstack.currentWidget()
editor.nameedit.setFocus()
editor.nameedit.selectAll()
def removeFeature(self, index):
del self.featuremodel[index]
index = selected_row(self.featureview)
if index is not None:
self.setCurrentIndex(index)
elif index is None and self.featuremodel.rowCount():
# Deleting the last item clears selection
self.setCurrentIndex(self.featuremodel.rowCount() - 1)
def removeSelectedFeature(self):
if self.currentIndex >= 0:
self.removeFeature(self.currentIndex)
def duplicateFeature(self):
desc = self.featuremodel[self.currentIndex]
self.addFeature(copy.deepcopy(desc))
@staticmethod
def check_attrs_values(attr, data):
for i in range(len(data)):
for var in attr:
if not math.isnan(data[i, var]) \
and int(data[i, var]) >= len(var.values):
return var.name
return None
def _validate_descriptors(self, desc):
def validate(source):
try:
return validate_exp(ast.parse(source, mode="eval"))
# ast.parse can return arbitrary errors, not only SyntaxError
# pylint: disable=broad-except
except Exception:
return False
final = []
invalid = []
for d in desc:
if validate(d.expression):
final.append(d)
else:
final.append(d._replace(expression=""))
invalid.append(d)
if invalid:
self.Error.invalid_expressions(", ".join(s.name for s in invalid))
return final
def apply(self):
def report_error(err):
log = logging.getLogger(__name__)
log.error("", exc_info=True)
self.error("".join(format_exception_only(type(err), err)).rstrip())
self.Error.clear()
if self.data is None:
return
desc = list(self.featuremodel)
desc = self._validate_descriptors(desc)
try:
new_variables = construct_variables(desc, self.data)
# user's expression can contain arbitrary errors
except Exception as err: # pylint: disable=broad-except
report_error(err)
return
attrs = [var for var in new_variables if var.is_primitive()]
metas = [var for var in new_variables if not var.is_primitive()]
new_domain = Orange.data.Domain(
self.data.domain.attributes + tuple(attrs),
self.data.domain.class_vars,
metas=self.data.domain.metas + tuple(metas))
try:
data = self.data.transform(new_domain)
# user's expression can contain arbitrary errors
# pylint: disable=broad-except
except Exception as err:
report_error(err)
return
disc_attrs_not_ok = self.check_attrs_values(
[var for var in attrs if var.is_discrete], data)
if disc_attrs_not_ok:
self.Error.more_values_needed(disc_attrs_not_ok)
return
self.Outputs.data.send(data)
def send_report(self):
items = OrderedDict()
for feature in self.featuremodel:
if isinstance(feature, DiscreteDescriptor):
items[
feature.name] = "{} (categorical with values {}{})".format(
feature.expression, feature.values,
"; ordered" * feature.ordered)
elif isinstance(feature, ContinuousDescriptor):
items[feature.name] = "{} (numeric)".format(feature.expression)
elif isinstance(feature, DateTimeDescriptor):
items[feature.name] = "{} (date/time)".format(
feature.expression)
else:
items[feature.name] = "{} (text)".format(feature.expression)
self.report_items(report.plural("Constructed feature{s}", len(items)),
items)
class SortedListWidget(QWidget):
sortingOrderChanged = Signal()
class _MyItemDelegate(QStyledItemDelegate):
def __init__(self, sortingModel, parent):
QStyledItemDelegate.__init__(self, parent)
self.sortingModel = sortingModel
def sizeHint(self, option, index):
size = QStyledItemDelegate.sizeHint(self, option, index)
return QSize(size.width(), size.height() + 4)
def createEditor(self, parent, option, index):
cb = QComboBox(parent)
cb.setModel(self.sortingModel)
cb.showPopup()
return cb
def setEditorData(self, editor, index):
pass # TODO: sensible default
def setModelData(self, editor, model, index):
text = editor.currentText()
model.setData(index, text)
def __init__(self, *args):
QWidget.__init__(self, *args)
self.setContentsMargins(0, 0, 0, 0)
gridLayout = QGridLayout()
gridLayout.setContentsMargins(0, 0, 0, 0)
gridLayout.setSpacing(1)
model = QStandardItemModel(self)
model.rowsInserted.connect(self.__changed)
model.rowsRemoved.connect(self.__changed)
model.dataChanged.connect(self.__changed)
self._listView = QListView(self)
self._listView.setModel(model)
# self._listView.setDragEnabled(True)
self._listView.setDropIndicatorShown(True)
self._listView.setDragDropMode(QListView.InternalMove)
self._listView.viewport().setAcceptDrops(True)
self._listView.setMinimumHeight(100)
gridLayout.addWidget(self._listView, 0, 0, 2, 2)
vButtonLayout = QVBoxLayout()
self._upAction = QAction(
"\u2191", self, toolTip="Move up")
self._upButton = QToolButton(self)
self._upButton.setDefaultAction(self._upAction)
self._upButton.setSizePolicy(
QSizePolicy.Fixed, QSizePolicy.MinimumExpanding)
self._downAction = QAction(
"\u2193", self, toolTip="Move down")
self._downButton = QToolButton(self)
self._downButton.setDefaultAction(self._downAction)
self._downButton.setSizePolicy(
QSizePolicy.Fixed, QSizePolicy.MinimumExpanding)
vButtonLayout.addWidget(self._upButton)
vButtonLayout.addWidget(self._downButton)
gridLayout.addLayout(vButtonLayout, 0, 2, 2, 1)
hButtonLayout = QHBoxLayout()
self._addAction = QAction("+", self)
self._addButton = QToolButton(self)
self._addButton.setDefaultAction(self._addAction)
self._removeAction = QAction("-", self)
self._removeButton = QToolButton(self)
self._removeButton.setDefaultAction(self._removeAction)
hButtonLayout.addWidget(self._addButton)
hButtonLayout.addWidget(self._removeButton)
hButtonLayout.addStretch(10)
gridLayout.addLayout(hButtonLayout, 2, 0, 1, 2)
self.setLayout(gridLayout)
self._addAction.triggered.connect(self._onAddAction)
self._removeAction.triggered.connect(self._onRemoveAction)
self._upAction.triggered.connect(self._onUpAction)
self._downAction.triggered.connect(self._onDownAction)
def sizeHint(self):
size = QWidget.sizeHint(self)
return QSize(size.width(), 100)
def _onAddAction(self):
item = QStandardItem("")
item.setFlags(item.flags() ^ Qt.ItemIsDropEnabled)
self._listView.model().appendRow(item)
self._listView.setCurrentIndex(item.index())
self._listView.edit(item.index())
def _onRemoveAction(self):
current = self._listView.currentIndex()
self._listView.model().takeRow(current.row())
def _onUpAction(self):
row = self._listView.currentIndex().row()
model = self._listView.model()
if row > 0:
items = model.takeRow(row)
model.insertRow(row - 1, items)
self._listView.setCurrentIndex(model.index(row - 1, 0))
def _onDownAction(self):
row = self._listView.currentIndex().row()
model = self._listView.model()
if row < model.rowCount() and row >= 0:
items = model.takeRow(row)
if row == model.rowCount():
model.appendRow(items)
else:
model.insertRow(row + 1, items)
self._listView.setCurrentIndex(model.index(row + 1, 0))
def setModel(self, model):
""" Set a model to select items from
"""
self._model = model
self._listView.setItemDelegate(self._MyItemDelegate(self._model, self))
def addItem(self, *args):
""" Add a new entry in the list
"""
item = QStandardItem(*args)
item.setFlags(item.flags() ^ Qt.ItemIsDropEnabled)
self._listView.model().appendRow(item)
def setItems(self, items):
self._listView.model().clear()
for item in items:
self.addItem(item)
def items(self):
order = []
for row in range(self._listView.model().rowCount()):
order.append(str(self._listView.model().item(row, 0).text()))
return order
def __changed(self):
self.sortingOrderChanged.emit()
sortingOrder = property(items, setItems)
class OWPythonScript(OWWidget):
name = "Pipeline Console"
description = "Console of pipeline."
icon = "icons/PythonScript.svg"
priority = 3150
keywords = ["build", "run"]
class Inputs:
data = Input("Data",
Table,
replaces=["in_data"],
default=True,
multiple=True)
learner = Input("Learner",
Learner,
replaces=["in_learner"],
default=True,
multiple=True)
classifier = Input("Classifier",
Model,
replaces=["in_classifier"],
default=True,
multiple=True)
object = Input("Object",
object,
replaces=["in_object"],
default=False,
multiple=True)
# Pipeline structure
pipline_in = Input("Input info", list)
class Outputs:
data = Output("Data", Table, replaces=["out_data"])
learner = Output("Learner", Learner, replaces=["out_learner"])
classifier = Output("Classifier", Model, replaces=["out_classifier"])
object = Output("Object", object, replaces=["out_object"])
# JJ
@Inputs.pipline_in
def set_pipline_in(self, pipline_in):
if pipline_in is not None:
# self.infoa.setText("There is input, which is the beginning of th pipeline.")
self.pipeline_wrapping(pipline_in)
# self.pipeline_writing() ########## Only for test
# self.read() ########## Only for test
# else:
# self.infoa.setText("No data on input yet, waiting to get something.")
signal_names = ("data", "learner", "classifier", "object")
settings_version = 2
scriptLibrary: 'List[_ScriptData]' = Setting([{
"name": "Hello world",
"script": "print('Hello world')\n",
"filename": None
}])
currentScriptIndex = Setting(0)
scriptText: Optional[str] = Setting(None, schema_only=True)
splitterState: Optional[bytes] = Setting(None)
# Widgets in the same schema share namespace through a dictionary whose
# key is self.signalManager. ales-erjavec expressed concern (and I fully
# agree!) about widget being aware of the outside world. I am leaving this
# anyway. If this causes any problems in the future, replace this with
# shared_namespaces = {} and thus use a common namespace for all instances
# of # PythonScript even if they are in different schemata.
shared_namespaces = defaultdict(dict)
class Error(OWWidget.Error):
pass
def __init__(self):
super().__init__()
self.libraryListSource = []
for name in self.signal_names:
setattr(self, name, {})
self._cachedDocuments = {}
self.infoBox = gui.vBox(self.controlArea, 'Info')
gui.label(
self.infoBox, self,
"<p>Execute python script.</p><p>Input variables:<ul><li> " +
"<li>".join(map("in_{0}, in_{0}s".format, self.signal_names)) +
"</ul></p><p>Output variables:<ul><li>" +
"<li>".join(map("out_{0}".format, self.signal_names)) +
"</ul></p>")
self.libraryList = itemmodels.PyListModel(
[],
self,
flags=Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable)
self.libraryList.wrap(self.libraryListSource)
self.controlBox = gui.vBox(self.controlArea, 'Library')
self.controlBox.layout().setSpacing(1)
self.libraryView = QListView(
editTriggers=QListView.DoubleClicked | QListView.EditKeyPressed,
sizePolicy=QSizePolicy(QSizePolicy.Ignored, QSizePolicy.Preferred))
self.libraryView.setItemDelegate(ScriptItemDelegate(self))
self.libraryView.setModel(self.libraryList)
self.libraryView.selectionModel().selectionChanged.connect(
self.onSelectedScriptChanged)
self.controlBox.layout().addWidget(self.libraryView)
w = itemmodels.ModelActionsWidget()
self.addNewScriptAction = action = QAction("+", self)
action.setToolTip("Add a new script to the library")
action.triggered.connect(self.onAddScript)
w.addAction(action)
action = QAction(unicodedata.lookup("MINUS SIGN"), self)
action.setToolTip("Remove script from library")
action.triggered.connect(self.onRemoveScript)
w.addAction(action)
action = QAction("Update", self)
action.setToolTip("Save changes in the editor to library")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.triggered.connect(self.commitChangesToLibrary)
w.addAction(action)
action = QAction("More", self, toolTip="More actions")
new_from_file = QAction("Import Script from File", self)
save_to_file = QAction("Save Selected Script to File", self)
restore_saved = QAction("Undo Changes to Selected Script", self)
save_to_file.setShortcut(QKeySequence(QKeySequence.SaveAs))
new_from_file.triggered.connect(self.onAddScriptFromFile)
save_to_file.triggered.connect(self.saveScript)
restore_saved.triggered.connect(self.restoreSaved)
menu = QMenu(w)
menu.addAction(new_from_file)
menu.addAction(save_to_file)
menu.addAction(restore_saved)
action.setMenu(menu)
button = w.addAction(action)
button.setPopupMode(QToolButton.InstantPopup)
w.layout().setSpacing(1)
self.controlBox.layout().addWidget(w)
self.execute_button = gui.button(self.controlArea,
self,
'Run Script',
callback=self.commit)
self.build_pipeline_button = gui.button(self.controlArea,
self,
'Build Pipeline',
callback=self.build_pipeline)
self.run_pipeline_button = gui.button(self.controlArea,
self,
'Run Pipeline',
callback=self.run_pipeline)
run = QAction("Run script",
self,
triggered=self.commit,
shortcut=QKeySequence(Qt.ControlModifier | Qt.Key_R))
self.addAction(run)
self.splitCanvas = QSplitter(Qt.Vertical, self.mainArea)
self.mainArea.layout().addWidget(self.splitCanvas)
self.defaultFont = defaultFont = \
"Monaco" if sys.platform == "darwin" else "Courier"
self.textBox = gui.vBox(self, 'Python Script')
self.splitCanvas.addWidget(self.textBox)
self.text = PythonScriptEditor(self)
self.textBox.layout().addWidget(self.text)
self.textBox.setAlignment(Qt.AlignVCenter)
self.text.setTabStopWidth(4)
self.text.modificationChanged[bool].connect(self.onModificationChanged)
self.saveAction = action = QAction("&Save", self.text)
action.setToolTip("Save script to file")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.setShortcutContext(Qt.WidgetWithChildrenShortcut)
action.triggered.connect(self.saveScript)
self.consoleBox = gui.vBox(self, 'Console')
self.splitCanvas.addWidget(self.consoleBox)
self.console = PythonConsole({}, self)
self.consoleBox.layout().addWidget(self.console)
self.console.document().setDefaultFont(QFont(defaultFont))
self.consoleBox.setAlignment(Qt.AlignBottom)
self.console.setTabStopWidth(4)
self.splitCanvas.setSizes([2, 1])
self.setAcceptDrops(True)
self.controlArea.layout().addStretch(10)
self._restoreState()
self.settingsAboutToBePacked.connect(self._saveState)
# pipeline infomation
self.hyperparameter = {}
self.python_path = "ENDING"
self.primitive_info = PrimitiveInfo(python_path=self.python_path,
id=-1,
hyperparameter=self.hyperparameter,
ancestors={})
def sizeHint(self) -> QSize:
return super().sizeHint().expandedTo(QSize(800, 600))
def _restoreState(self):
self.libraryListSource = [
Script.fromdict(s) for s in self.scriptLibrary
]
self.libraryList.wrap(self.libraryListSource)
select_row(self.libraryView, self.currentScriptIndex)
if self.scriptText is not None:
current = self.text.toPlainText()
# do not mark scripts as modified
if self.scriptText != current:
self.text.document().setPlainText(self.scriptText)
if self.splitterState is not None:
self.splitCanvas.restoreState(QByteArray(self.splitterState))
def _saveState(self):
self.scriptLibrary = [s.asdict() for s in self.libraryListSource]
self.scriptText = self.text.toPlainText()
self.splitterState = bytes(self.splitCanvas.saveState())
def handle_input(self, obj, sig_id, signal):
sig_id = sig_id[0]
dic = getattr(self, signal)
if obj is None:
if sig_id in dic.keys():
del dic[sig_id]
else:
dic[sig_id] = obj
@Inputs.data
def set_data(self, data, sig_id):
self.handle_input(data, sig_id, "data")
@Inputs.learner
def set_learner(self, data, sig_id):
self.handle_input(data, sig_id, "learner")
@Inputs.classifier
def set_classifier(self, data, sig_id):
self.handle_input(data, sig_id, "classifier")
@Inputs.object
def set_object(self, data, sig_id):
self.handle_input(data, sig_id, "object")
def handleNewSignals(self):
self.commit()
def selectedScriptIndex(self):
rows = self.libraryView.selectionModel().selectedRows()
if rows:
return [i.row() for i in rows][0]
else:
return None
def setSelectedScript(self, index):
select_row(self.libraryView, index)
def onAddScript(self, *_):
self.libraryList.append(
Script("New script", self.text.toPlainText(), 0))
self.setSelectedScript(len(self.libraryList) - 1)
def onAddScriptFromFile(self, *_):
filename, _ = QFileDialog.getOpenFileName(
self, 'Open Python Script', os.path.expanduser("~/"),
'Python files (*.py)\nAll files(*.*)')
if filename:
name = os.path.basename(filename)
# TODO: use `tokenize.detect_encoding`
with open(filename, encoding="utf-8") as f:
contents = f.read()
self.libraryList.append(Script(name, contents, 0, filename))
self.setSelectedScript(len(self.libraryList) - 1)
def onRemoveScript(self, *_):
index = self.selectedScriptIndex()
if index is not None:
del self.libraryList[index]
select_row(self.libraryView, max(index - 1, 0))
def onSaveScriptToFile(self, *_):
index = self.selectedScriptIndex()
if index is not None:
self.saveScript()
def onSelectedScriptChanged(self, selected, _deselected):
index = [i.row() for i in selected.indexes()]
if index:
current = index[0]
if current >= len(self.libraryList):
self.addNewScriptAction.trigger()
return
self.text.setDocument(self.documentForScript(current))
self.currentScriptIndex = current
def documentForScript(self, script=0):
if not isinstance(script, Script):
script = self.libraryList[script]
if script not in self._cachedDocuments:
doc = QTextDocument(self)
doc.setDocumentLayout(QPlainTextDocumentLayout(doc))
doc.setPlainText(script.script)
doc.setDefaultFont(QFont(self.defaultFont))
doc.highlighter = PythonSyntaxHighlighter(doc)
doc.modificationChanged[bool].connect(self.onModificationChanged)
doc.setModified(False)
self._cachedDocuments[script] = doc
return self._cachedDocuments[script]
def commitChangesToLibrary(self, *_):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].script = self.text.toPlainText()
self.text.document().setModified(False)
self.libraryList.emitDataChanged(index)
def onModificationChanged(self, modified):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].flags = Script.Modified if modified else 0
self.libraryList.emitDataChanged(index)
def restoreSaved(self):
index = self.selectedScriptIndex()
if index is not None:
self.text.document().setPlainText(self.libraryList[index].script)
self.text.document().setModified(False)
def saveScript(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
filename = script.filename
else:
filename = os.path.expanduser("~/")
filename, _ = QFileDialog.getSaveFileName(
self, 'Save Python Script', filename,
'Python files (*.py)\nAll files(*.*)')
if filename:
fn = ""
head, tail = os.path.splitext(filename)
if not tail:
fn = head + ".py"
else:
fn = filename
f = open(fn, 'w')
f.write(self.text.toPlainText())
f.close()
def initial_locals_state(self):
d = self.shared_namespaces[self.signalManager].copy()
for name in self.signal_names:
value = getattr(self, name)
all_values = list(value.values())
one_value = all_values[0] if len(all_values) == 1 else None
d["in_" + name + "s"] = all_values
d["in_" + name] = one_value
return d
def update_namespace(self, namespace):
not_saved = reduce(set.union,
({f"in_{name}s", f"in_{name}", f"out_{name}"}
for name in self.signal_names))
self.shared_namespaces[self.signalManager].update({
name: value
for name, value in namespace.items() if name not in not_saved
})
def commit(self):
self.Error.clear()
lcls = self.initial_locals_state()
lcls["_script"] = str(self.text.toPlainText())
self.console.updateLocals(lcls)
self.console.write("\nRunning script:\n")
self.console.push("exec(_script)")
self.console.new_prompt(sys.ps1)
self.update_namespace(self.console.locals)
for signal in self.signal_names:
out_var = self.console.locals.get("out_" + signal)
signal_type = getattr(self.Outputs, signal).type
if not isinstance(out_var, signal_type) and out_var is not None:
self.Error.add_message(
signal, "'{}' has to be an instance of '{}'.".format(
signal, signal_type.__name__))
getattr(self.Error, signal)()
out_var = None
getattr(self.Outputs, signal).send(out_var)
def dragEnterEvent(self, event): # pylint: disable=no-self-use
urls = event.mimeData().urls()
if urls:
# try reading the file as text
c = read_file_content(urls[0].toLocalFile(), limit=1000)
if c is not None:
event.acceptProposedAction()
def dropEvent(self, event):
"""Handle file drops"""
urls = event.mimeData().urls()
if urls:
self.text.pasteFile(urls[0])
@classmethod
def migrate_settings(cls, settings, version):
if version is not None and version < 2:
scripts = settings.pop("libraryListSource") # type: List[Script]
library = [
dict(name=s.name, script=s.script, filename=s.filename)
for s in scripts
] # type: List[_ScriptData]
settings["scriptLibrary"] = library
def run_pipeline(self):
print('run_pipeline')
run_pipeline(self.output_list_ending, stdout=self.console)
self.console.new_prompt(sys.ps1) # flush the console
pass
def build_pipeline(self):
print('build_pipeline')
build_pipeline(self.output_list_ending,
self.primitive_mapping,
stdout=self.console)
self.console.new_prompt(sys.ps1) # flush the console
pass
def pipeline_wrapping(self, pipline_in):
self.output_list = pipline_in[0]
self.ancestors_path = pipline_in[1]
self.primitive_info.ancestors['inputs'] = self.ancestors_path
self.output_list_ending = self.output_list + [self.primitive_info]
self.primitive_mapping = {}
for i in range(0, len(self.output_list_ending)):
self.primitive_mapping[self.output_list_ending[i].id] = i
class OWImpute(OWWidget):
name = "Impute"
description = "Impute missing values in the data table."
icon = "icons/Impute.svg"
priority = 2130
inputs = [("Data", Orange.data.Table, "set_data"),
("Learner", Learner, "set_learner")]
outputs = [("Data", Orange.data.Table)]
DEFAULT_LEARNER = SimpleTreeLearner()
METHODS = [AsDefault(), impute.DoNotImpute(), impute.Average(),
impute.AsValue(), impute.Model(DEFAULT_LEARNER), impute.Random(),
impute.DropInstances(), impute.Default()]
DEFAULT, DO_NOT_IMPUTE, MODEL_BASED_IMPUTER, AS_INPUT = 0, 1, 4, 7
settingsHandler = settings.DomainContextHandler()
_default_method_index = settings.Setting(DO_NOT_IMPUTE)
variable_methods = settings.ContextSetting({})
autocommit = settings.Setting(False)
default_value = settings.Setting(0.)
want_main_area = False
resizing_enabled = False
def __init__(self):
super().__init__()
main_layout = QVBoxLayout()
main_layout.setContentsMargins(10, 10, 10, 10)
self.controlArea.layout().addLayout(main_layout)
box = QGroupBox(title=self.tr("Default Method"), flat=False)
box_layout = QVBoxLayout(box)
main_layout.addWidget(box)
button_group = QButtonGroup()
button_group.buttonClicked[int].connect(self.set_default_method)
for i, method in enumerate(self.METHODS):
if not method.columns_only:
button = QRadioButton(method.name)
button.setChecked(i == self.default_method_index)
button_group.addButton(button, i)
box_layout.addWidget(button)
self.default_button_group = button_group
box = QGroupBox(title=self.tr("Individual Attribute Settings"),
flat=False)
main_layout.addWidget(box)
horizontal_layout = QHBoxLayout(box)
main_layout.addWidget(box)
self.varview = QListView(
selectionMode=QListView.ExtendedSelection
)
self.varview.setItemDelegate(DisplayFormatDelegate())
self.varmodel = itemmodels.VariableListModel()
self.varview.setModel(self.varmodel)
self.varview.selectionModel().selectionChanged.connect(
self._on_var_selection_changed
)
self.selection = self.varview.selectionModel()
horizontal_layout.addWidget(self.varview)
method_layout = QVBoxLayout()
horizontal_layout.addLayout(method_layout)
button_group = QButtonGroup()
for i, method in enumerate(self.METHODS):
button = QRadioButton(text=method.name)
button_group.addButton(button, i)
method_layout.addWidget(button)
self.value_combo = QComboBox(
minimumContentsLength=8,
sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLength,
activated=self._on_value_selected
)
self.value_combo.currentIndexChanged.connect(self._on_value_changed)
self.value_double = QDoubleSpinBox(
editingFinished=self._on_value_selected,
minimum=-1000., maximum=1000., singleStep=.1, decimals=3,
value=self.default_value
)
self.value_stack = value_stack = QStackedLayout()
value_stack.addWidget(self.value_combo)
value_stack.addWidget(self.value_double)
method_layout.addLayout(value_stack)
button_group.buttonClicked[int].connect(
self.set_method_for_current_selection
)
method_layout.addStretch(2)
reset_button = QPushButton(
"Restore All to Default", checked=False, checkable=False,
clicked=self.reset_variable_methods, default=False,
autoDefault=False)
method_layout.addWidget(reset_button)
self.variable_button_group = button_group
box = gui.auto_commit(
self.controlArea, self, "autocommit", "Apply",
orientation=Qt.Horizontal, checkbox_label="Apply automatically")
box.layout().insertSpacing(0, 80)
box.layout().insertWidget(0, self.report_button)
self.data = None
self.modified = False
self.default_method = self.METHODS[self.default_method_index]
self.update_varview()
@property
def default_method_index(self):
return self._default_method_index
@default_method_index.setter
def default_method_index(self, index):
if self._default_method_index != index:
self._default_method_index = index
self.default_button_group.button(index).setChecked(True)
self.default_method = self.METHODS[self.default_method_index]
self.METHODS[self.DEFAULT].method = self.default_method
# update variable view
for index in map(self.varmodel.index, range(len(self.varmodel))):
self.varmodel.setData(index,
self.variable_methods.get(index.row(), self.METHODS[self.DEFAULT]),
Qt.UserRole)
self._invalidate()
def set_default_method(self, index):
"""Set the current selected default imputation method.
"""
self.default_method_index = index
@check_sql_input
def set_data(self, data):
self.closeContext()
self.varmodel[:] = []
self.variable_methods = {}
self.modified = False
self.data = data
if data is not None:
self.varmodel[:] = data.domain.variables
self.openContext(data.domain)
self.update_varview()
self.unconditional_commit()
def set_learner(self, learner):
self.learner = learner or self.DEFAULT_LEARNER
imputer = self.METHODS[self.MODEL_BASED_IMPUTER]
imputer.learner = self.learner
button = self.default_button_group.button(self.MODEL_BASED_IMPUTER)
button.setText(imputer.name)
variable_button = self.variable_button_group.button(self.MODEL_BASED_IMPUTER)
variable_button.setText(imputer.name)
if learner is not None:
self.default_method_index = self.MODEL_BASED_IMPUTER
self.commit()
def get_method_for_column(self, column_index):
"""Returns the imputation method for column by its index.
"""
if not isinstance(column_index, int):
column_index = column_index.row()
return self.variable_methods.get(column_index,
self.METHODS[self.DEFAULT])
def _invalidate(self):
self.modified = True
self.commit()
def commit(self):
data = self.data
if self.data is not None:
if not len(self.data):
self.send("Data", self.data)
self.modified = False
return
drop_mask = np.zeros(len(self.data), bool)
attributes = []
class_vars = []
self.warning()
with self.progressBar(len(self.varmodel)) as progress:
for i, var in enumerate(self.varmodel):
method = self.variable_methods.get(i, self.default_method)
if not method.supports_variable(var):
self.warning("Default method can not handle '{}'".
format(var.name))
elif isinstance(method, impute.DropInstances):
drop_mask |= method(self.data, var)
else:
var = method(self.data, var)
if isinstance(var, Orange.data.Variable):
var = [var]
if i < len(self.data.domain.attributes):
attributes.extend(var)
else:
class_vars.extend(var)
progress.advance()
domain = Orange.data.Domain(attributes, class_vars,
self.data.domain.metas)
data = self.data.from_table(domain, self.data[~drop_mask])
self.send("Data", data)
self.modified = False
def send_report(self):
specific = []
for i, var in enumerate(self.varmodel):
method = self.variable_methods.get(i, None)
if method is not None:
specific.append("{} ({})".format(var.name, str(method)))
default = self.default_method.name
if specific:
self.report_items((
("Default method", default),
("Specific imputers", ", ".join(specific))
))
else:
self.report_items((("Method", default),))
def _on_var_selection_changed(self):
indexes = self.selection.selectedIndexes()
methods = set(self.get_method_for_column(i.row()).name for i in indexes)
selected_vars = [self.varmodel[index.row()] for index in indexes]
has_discrete = any(var.is_discrete for var in selected_vars)
if len(methods) == 1:
method = methods.pop()
for i, m in enumerate(self.METHODS):
if method == m.name:
self.variable_button_group.button(i).setChecked(True)
elif self.variable_button_group.checkedButton() is not None:
self.variable_button_group.setExclusive(False)
self.variable_button_group.checkedButton().setChecked(False)
self.variable_button_group.setExclusive(True)
for method, button in zip(self.METHODS,
self.variable_button_group.buttons()):
enabled = all(method.supports_variable(var) for var in
selected_vars)
button.setEnabled(enabled)
if not has_discrete:
self.value_stack.setEnabled(True)
self.value_stack.setCurrentWidget(self.value_double)
self._on_value_changed()
elif len(selected_vars) == 1:
self.value_stack.setEnabled(True)
self.value_stack.setCurrentWidget(self.value_combo)
self.value_combo.clear()
self.value_combo.addItems(selected_vars[0].values)
self._on_value_changed()
else:
self.variable_button_group.button(self.AS_INPUT).setEnabled(False)
self.value_stack.setEnabled(False)
def set_method_for_current_selection(self, method_index):
indexes = self.selection.selectedIndexes()
self.set_method_for_indexes(indexes, method_index)
def set_method_for_indexes(self, indexes, method_index):
if method_index == self.DEFAULT:
for index in indexes:
self.variable_methods.pop(index, None)
else:
method = self.METHODS[method_index].copy()
for index in indexes:
self.variable_methods[index.row()] = method
self.update_varview(indexes)
self._invalidate()
def update_varview(self, indexes=None):
if indexes is None:
indexes = map(self.varmodel.index, range(len(self.varmodel)))
for index in indexes:
self.varmodel.setData(index, self.get_method_for_column(index.row()), Qt.UserRole)
def _on_value_selected(self):
self.variable_button_group.button(self.AS_INPUT).setChecked(True)
self._on_value_changed()
def _on_value_changed(self):
widget = self.value_stack.currentWidget()
if widget is self.value_combo:
value = self.value_combo.currentText()
else:
value = self.value_double.value()
self.default_value = value
self.METHODS[self.AS_INPUT].default = value
index = self.variable_button_group.checkedId()
if index == self.AS_INPUT:
self.set_method_for_current_selection(index)
def reset_variable_methods(self):
indexes = map(self.varmodel.index, range(len(self.varmodel)))
self.set_method_for_indexes(indexes, self.DEFAULT)
self.variable_button_group.button(self.DEFAULT).setChecked(True)
class OWImpute(OWWidget):
name = "Impute"
description = "Impute missing values in the data table."
icon = "icons/Impute.svg"
priority = 2130
keywords = ["substitute", "missing"]
class Inputs:
data = Input("Data", Orange.data.Table)
learner = Input("Learner", Learner)
class Outputs:
data = Output("Data", Orange.data.Table)
class Error(OWWidget.Error):
imputation_failed = Msg("Imputation failed for '{}'")
model_based_imputer_sparse = \
Msg("Model based imputer does not work for sparse data")
class Warning(OWWidget.Warning):
cant_handle_var = Msg("Default method can not handle '{}'")
settingsHandler = settings.DomainContextHandler()
_default_method_index = settings.Setting(int(Method.Leave)) # type: int
# Per-variable imputation state (synced in storeSpecificSettings)
_variable_imputation_state = settings.ContextSetting(
{}) # type: VariableState
autocommit = settings.Setting(True)
want_main_area = False
resizing_enabled = False
def __init__(self):
super().__init__()
self.data = None # type: Optional[Orange.data.Table]
self.learner = None # type: Optional[Learner]
self.default_learner = SimpleTreeLearner()
self.modified = False
self.executor = qconcurrent.ThreadExecutor(self)
self.__task = None
main_layout = QVBoxLayout()
main_layout.setContentsMargins(10, 10, 10, 10)
self.controlArea.layout().addLayout(main_layout)
box = QGroupBox(title=self.tr("Default Method"), flat=False)
box_layout = QVBoxLayout(box)
main_layout.addWidget(box)
button_group = QButtonGroup()
button_group.buttonClicked[int].connect(self.set_default_method)
for method, _ in list(METHODS.items())[1:-1]:
imputer = self.create_imputer(method)
button = QRadioButton(imputer.name)
button.setChecked(method == self.default_method_index)
button_group.addButton(button, method)
box_layout.addWidget(button)
self.default_button_group = button_group
box = QGroupBox(title=self.tr("Individual Attribute Settings"),
flat=False)
main_layout.addWidget(box)
horizontal_layout = QHBoxLayout(box)
main_layout.addWidget(box)
self.varview = QListView(selectionMode=QListView.ExtendedSelection,
uniformItemSizes=True)
self.varview.setItemDelegate(DisplayFormatDelegate())
self.varmodel = itemmodels.VariableListModel()
self.varview.setModel(self.varmodel)
self.varview.selectionModel().selectionChanged.connect(
self._on_var_selection_changed)
self.selection = self.varview.selectionModel()
horizontal_layout.addWidget(self.varview)
method_layout = QVBoxLayout()
horizontal_layout.addLayout(method_layout)
button_group = QButtonGroup()
for method in Method:
imputer = self.create_imputer(method)
button = QRadioButton(text=imputer.name)
button_group.addButton(button, method)
method_layout.addWidget(button)
self.value_combo = QComboBox(
minimumContentsLength=8,
sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLength,
activated=self._on_value_selected)
self.value_double = QDoubleSpinBox(
editingFinished=self._on_value_selected,
minimum=-1000.,
maximum=1000.,
singleStep=.1,
decimals=3,
)
self.value_stack = value_stack = QStackedWidget()
value_stack.addWidget(self.value_combo)
value_stack.addWidget(self.value_double)
method_layout.addWidget(value_stack)
button_group.buttonClicked[int].connect(
self.set_method_for_current_selection)
method_layout.addStretch(2)
reset_button = QPushButton("Restore All to Default",
checked=False,
checkable=False,
clicked=self.reset_variable_state,
default=False,
autoDefault=False)
method_layout.addWidget(reset_button)
self.variable_button_group = button_group
box = gui.auto_apply(self.controlArea, self, "autocommit")
box.button.setFixedWidth(180)
box.layout().insertStretch(0)
self.info.set_input_summary(self.info.NoInput)
self.info.set_output_summary(self.info.NoOutput)
def create_imputer(self, method, *args):
# type: (Method, ...) -> impute.BaseImputeMethod
if method == Method.Model:
if self.learner is not None:
return impute.Model(self.learner)
else:
return impute.Model(self.default_learner)
elif method == Method.AsAboveSoBelow:
assert self.default_method_index != Method.AsAboveSoBelow
default = self.create_imputer(Method(self.default_method_index))
m = AsDefault()
m.method = default
return m
else:
return METHODS[method](*args)
@property
def default_method_index(self):
return self._default_method_index
@default_method_index.setter
def default_method_index(self, index):
if self._default_method_index != index:
assert index != Method.AsAboveSoBelow
self._default_method_index = index
self.default_button_group.button(index).setChecked(True)
# update variable view
self.update_varview()
self._invalidate()
def set_default_method(self, index):
"""Set the current selected default imputation method.
"""
self.default_method_index = index
@Inputs.data
@check_sql_input
def set_data(self, data):
self.cancel()
self.closeContext()
self.varmodel[:] = []
self._variable_imputation_state = {} # type: VariableState
self.modified = False
self.data = data
if data is not None:
self.varmodel[:] = data.domain.variables
self.openContext(data.domain)
# restore per variable imputation state
self._restore_state(self._variable_imputation_state)
summary = len(data) if data else self.info.NoInput
details = format_summary_details(data) if data else ""
self.info.set_input_summary(summary, details)
self.update_varview()
self.unconditional_commit()
@Inputs.learner
def set_learner(self, learner):
self.cancel()
self.learner = learner or self.default_learner
imputer = self.create_imputer(Method.Model)
button = self.default_button_group.button(Method.Model)
button.setText(imputer.name)
variable_button = self.variable_button_group.button(Method.Model)
variable_button.setText(imputer.name)
if learner is not None:
self.default_method_index = Method.Model
self.update_varview()
self.commit()
def get_method_for_column(self, column_index):
# type: (int) -> impute.BaseImputeMethod
"""
Return the imputation method for column by its index.
"""
assert 0 <= column_index < len(self.varmodel)
idx = self.varmodel.index(column_index, 0)
state = idx.data(StateRole)
if state is None:
state = (Method.AsAboveSoBelow, ())
return self.create_imputer(state[0], *state[1])
def _invalidate(self):
self.modified = True
if self.__task is not None:
self.cancel()
self.commit()
def commit(self):
self.cancel()
self.warning()
self.Error.imputation_failed.clear()
self.Error.model_based_imputer_sparse.clear()
summary = len(self.data) if self.data else self.info.NoOutput
detail = format_summary_details(self.data) if self.data else ""
self.info.set_output_summary(summary, detail)
if not self.data or not self.varmodel.rowCount():
self.Outputs.data.send(self.data)
self.modified = False
return
data = self.data
impute_state = [(i, var, self.get_method_for_column(i))
for i, var in enumerate(self.varmodel)]
# normalize to the effective method bypasing AsDefault
impute_state = [(i, var, m.method if isinstance(m, AsDefault) else m)
for i, var, m in impute_state]
def impute_one(method, var, data):
# Readability counts, pylint: disable=no-else-raise
# type: (impute.BaseImputeMethod, Variable, Table) -> Any
if isinstance(method, impute.Model) and data.is_sparse():
raise SparseNotSupported()
elif isinstance(method, impute.DropInstances):
return RowMask(method(data, var))
elif not method.supports_variable(var):
raise VariableNotSupported(var)
else:
return method(data, var)
futures = []
for _, var, method in impute_state:
f = self.executor.submit(impute_one, copy.deepcopy(method), var,
data)
futures.append(f)
w = qconcurrent.FutureSetWatcher(futures)
w.doneAll.connect(self.__commit_finish)
w.progressChanged.connect(self.__progress_changed)
self.__task = Task(futures, w)
self.progressBarInit()
self.setInvalidated(True)
@Slot()
def __commit_finish(self):
assert QThread.currentThread() is self.thread()
assert self.__task is not None
futures = self.__task.futures
assert len(futures) == len(self.varmodel)
assert self.data is not None
def get_variable(variable, future, drop_mask) \
-> Optional[List[Orange.data.Variable]]:
# Returns a (potentially empty) list of variables,
# or None on failure that should interrupt the imputation
assert future.done()
try:
res = future.result()
except SparseNotSupported:
self.Error.model_based_imputer_sparse()
return [] # None?
except VariableNotSupported:
self.Warning.cant_handle_var(variable.name)
return []
except Exception: # pylint: disable=broad-except
log = logging.getLogger(__name__)
log.info("Error for %s", variable.name, exc_info=True)
self.Error.imputation_failed(variable.name)
return None
if isinstance(res, RowMask):
drop_mask |= res.mask
newvar = variable
else:
newvar = res
if isinstance(newvar, Orange.data.Variable):
newvar = [newvar]
return newvar
def create_data(attributes, class_vars):
domain = Orange.data.Domain(attributes, class_vars,
self.data.domain.metas)
try:
return self.data.from_table(domain, self.data[~drop_mask])
except Exception: # pylint: disable=broad-except
log = logging.getLogger(__name__)
log.info("Error", exc_info=True)
self.Error.imputation_failed("Unknown")
return None
self.__task = None
self.setInvalidated(False)
self.progressBarFinished()
attributes = []
class_vars = []
drop_mask = np.zeros(len(self.data), bool)
for i, (var, fut) in enumerate(zip(self.varmodel, futures)):
newvar = get_variable(var, fut, drop_mask)
if newvar is None:
data = None
break
if i < len(self.data.domain.attributes):
attributes.extend(newvar)
else:
class_vars.extend(newvar)
else:
data = create_data(attributes, class_vars)
self.Outputs.data.send(data)
self.modified = False
summary = len(data) if data else self.info.NoOutput
details = format_summary_details(data) if data else ""
self.info.set_output_summary(summary, details)
@Slot(int, int)
def __progress_changed(self, n, d):
assert QThread.currentThread() is self.thread()
assert self.__task is not None
self.progressBarSet(100. * n / d)
def cancel(self):
self.__cancel(wait=False)
def __cancel(self, wait=False):
if self.__task is not None:
task, self.__task = self.__task, None
task.cancel()
task.watcher.doneAll.disconnect(self.__commit_finish)
task.watcher.progressChanged.disconnect(self.__progress_changed)
if wait:
concurrent.futures.wait(task.futures)
task.watcher.flush()
self.progressBarFinished()
self.setInvalidated(False)
def onDeleteWidget(self):
self.__cancel(wait=True)
super().onDeleteWidget()
def send_report(self):
specific = []
for i, var in enumerate(self.varmodel):
method = self.get_method_for_column(i)
if not isinstance(method, AsDefault):
specific.append("{} ({})".format(var.name, str(method)))
default = self.create_imputer(Method.AsAboveSoBelow)
if specific:
self.report_items((("Default method", default.name),
("Specific imputers", ", ".join(specific))))
else:
self.report_items((("Method", default.name), ))
def _on_var_selection_changed(self):
# Method is well documented, splitting it is not needed for readability,
# thus pylint: disable=too-many-branches
indexes = self.selection.selectedIndexes()
defmethod = (Method.AsAboveSoBelow, ())
methods = [index.data(StateRole) for index in indexes]
methods = [m if m is not None else defmethod for m in methods]
methods = set(methods)
selected_vars = [self.varmodel[index.row()] for index in indexes]
has_discrete = any(var.is_discrete for var in selected_vars)
fixed_value = None
value_stack_enabled = False
current_value_widget = None
if len(methods) == 1:
method_type, parameters = methods.pop()
for m in Method:
if method_type == m:
self.variable_button_group.button(m).setChecked(True)
if method_type == Method.Default:
(fixed_value, ) = parameters
elif self.variable_button_group.checkedButton() is not None:
# Uncheck the current button
self.variable_button_group.setExclusive(False)
self.variable_button_group.checkedButton().setChecked(False)
self.variable_button_group.setExclusive(True)
assert self.variable_button_group.checkedButton() is None
# Update variable methods GUI enabled state based on selection.
for method in Method:
# use a default constructed imputer to query support
imputer = self.create_imputer(method)
enabled = all(
imputer.supports_variable(var) for var in selected_vars)
button = self.variable_button_group.button(method)
button.setEnabled(enabled)
# Update the "Value" edit GUI.
if not has_discrete:
# no discrete variables -> allow mass edit for all (continuous vars)
value_stack_enabled = True
current_value_widget = self.value_double
elif len(selected_vars) == 1:
# single discrete var -> enable and fill the values combo
value_stack_enabled = True
current_value_widget = self.value_combo
self.value_combo.clear()
self.value_combo.addItems(selected_vars[0].values)
else:
# mixed type selection -> disable
value_stack_enabled = False
current_value_widget = None
self.variable_button_group.button(Method.Default).setEnabled(False)
self.value_stack.setEnabled(value_stack_enabled)
if current_value_widget is not None:
self.value_stack.setCurrentWidget(current_value_widget)
if fixed_value is not None:
# set current value
if current_value_widget is self.value_combo:
self.value_combo.setCurrentIndex(fixed_value)
elif current_value_widget is self.value_double:
self.value_double.setValue(fixed_value)
else:
assert False
def set_method_for_current_selection(self, method_index):
# type: (Method) -> None
indexes = self.selection.selectedIndexes()
self.set_method_for_indexes(indexes, method_index)
def set_method_for_indexes(self, indexes, method_index):
# type: (List[QModelIndex], Method) -> None
if method_index == Method.AsAboveSoBelow:
for index in indexes:
self.varmodel.setData(index, None, StateRole)
elif method_index == Method.Default:
current = self.value_stack.currentWidget()
if current is self.value_combo:
value = self.value_combo.currentIndex()
else:
value = self.value_double.value()
for index in indexes:
state = (int(Method.Default), (value, ))
self.varmodel.setData(index, state, StateRole)
else:
state = (int(method_index), ())
for index in indexes:
self.varmodel.setData(index, state, StateRole)
self.update_varview(indexes)
self._invalidate()
def update_varview(self, indexes=None):
if indexes is None:
indexes = map(self.varmodel.index, range(len(self.varmodel)))
for index in indexes:
self.varmodel.setData(index,
self.get_method_for_column(index.row()),
DisplayMethodRole)
def _on_value_selected(self):
# The fixed 'Value' in the widget has been changed by the user.
self.variable_button_group.button(Method.Default).setChecked(True)
self.set_method_for_current_selection(Method.Default)
def reset_variable_state(self):
indexes = list(map(self.varmodel.index, range(len(self.varmodel))))
self.set_method_for_indexes(indexes, Method.AsAboveSoBelow)
self.variable_button_group.button(
Method.AsAboveSoBelow).setChecked(True)
def _store_state(self):
# type: () -> VariableState
"""
Save the current variable imputation state
"""
state = {} # type: VariableState
for i, var in enumerate(self.varmodel):
index = self.varmodel.index(i)
m = index.data(StateRole)
if m is not None:
state[var_key(var)] = m
return state
def _restore_state(self, state):
# type: (VariableState) -> None
"""
Restore the variable imputation state from the saved state
"""
def check(state):
# check if state is a proper State
if isinstance(state, tuple) and len(state) == 2:
m, p = state
if isinstance(m, int) and isinstance(p, tuple) and \
0 <= m < len(Method):
return True
return False
for i, var in enumerate(self.varmodel):
m = state.get(var_key(var), None)
if check(m):
self.varmodel.setData(self.varmodel.index(i), m, StateRole)
def storeSpecificSettings(self):
self._variable_imputation_state = self._store_state()
super().storeSpecificSettings()
class OWPythonScript(widget.OWWidget):
name = "Python Script"
description = "Write a Python script and run it on input data or models."
icon = "icons/PythonScript.svg"
priority = 3150
keywords = ["file", "program"]
class Inputs:
data = Input("Data", Table, replaces=["in_data"],
default=True, multiple=True)
learner = Input("Learner", Learner, replaces=["in_learner"],
default=True, multiple=True)
classifier = Input("Classifier", Model, replaces=["in_classifier"],
default=True, multiple=True)
object = Input("Object", object, replaces=["in_object"],
default=False, multiple=True)
class Outputs:
data = Output("Data", Table, replaces=["out_data"])
learner = Output("Learner", Learner, replaces=["out_learner"])
classifier = Output("Classifier", Model, replaces=["out_classifier"])
object = Output("Object", object, replaces=["out_object"])
signal_names = ("data", "learner", "classifier", "object")
settingsHandler = PrepareSavingSettingsHandler()
libraryListSource = \
Setting([Script("Hello world", "print('Hello world')\n")])
currentScriptIndex = Setting(0)
scriptText = Setting(None, schema_only=True)
splitterState = Setting(None)
class Error(OWWidget.Error):
pass
def __init__(self):
super().__init__()
for name in self.signal_names:
setattr(self, name, {})
for s in self.libraryListSource:
s.flags = 0
self._cachedDocuments = {}
self.infoBox = gui.vBox(self.controlArea, 'Info')
gui.label(
self.infoBox, self,
"<p>Execute python script.</p><p>Input variables:<ul><li> " +
"<li>".join(map("in_{0}, in_{0}s".format, self.signal_names)) +
"</ul></p><p>Output variables:<ul><li>" +
"<li>".join(map("out_{0}".format, self.signal_names)) +
"</ul></p>"
)
self.libraryList = itemmodels.PyListModel(
[], self,
flags=Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable)
self.libraryList.wrap(self.libraryListSource)
self.controlBox = gui.vBox(self.controlArea, 'Library')
self.controlBox.layout().setSpacing(1)
self.libraryView = QListView(
editTriggers=QListView.DoubleClicked |
QListView.EditKeyPressed,
sizePolicy=QSizePolicy(QSizePolicy.Ignored,
QSizePolicy.Preferred)
)
self.libraryView.setItemDelegate(ScriptItemDelegate(self))
self.libraryView.setModel(self.libraryList)
self.libraryView.selectionModel().selectionChanged.connect(
self.onSelectedScriptChanged
)
self.controlBox.layout().addWidget(self.libraryView)
w = itemmodels.ModelActionsWidget()
self.addNewScriptAction = action = QAction("+", self)
action.setToolTip("Add a new script to the library")
action.triggered.connect(self.onAddScript)
w.addAction(action)
action = QAction(unicodedata.lookup("MINUS SIGN"), self)
action.setToolTip("Remove script from library")
action.triggered.connect(self.onRemoveScript)
w.addAction(action)
action = QAction("Update", self)
action.setToolTip("Save changes in the editor to library")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.triggered.connect(self.commitChangesToLibrary)
w.addAction(action)
action = QAction("More", self, toolTip="More actions")
new_from_file = QAction("Import Script from File", self)
save_to_file = QAction("Save Selected Script to File", self)
restore_saved = QAction("Undo Changes to Selected Script", self)
save_to_file.setShortcut(QKeySequence(QKeySequence.SaveAs))
new_from_file.triggered.connect(self.onAddScriptFromFile)
save_to_file.triggered.connect(self.saveScript)
restore_saved.triggered.connect(self.restoreSaved)
menu = QMenu(w)
menu.addAction(new_from_file)
menu.addAction(save_to_file)
menu.addAction(restore_saved)
action.setMenu(menu)
button = w.addAction(action)
button.setPopupMode(QToolButton.InstantPopup)
w.layout().setSpacing(1)
self.controlBox.layout().addWidget(w)
self.execute_button = gui.button(self.controlArea, self, 'Run', callback=self.commit)
self.splitCanvas = QSplitter(Qt.Vertical, self.mainArea)
self.mainArea.layout().addWidget(self.splitCanvas)
self.defaultFont = defaultFont = \
"Monaco" if sys.platform == "darwin" else "Courier"
self.textBox = gui.vBox(self, 'Python Script')
self.splitCanvas.addWidget(self.textBox)
self.text = PythonScriptEditor(self)
self.textBox.layout().addWidget(self.text)
self.textBox.setAlignment(Qt.AlignVCenter)
self.text.setTabStopWidth(4)
self.text.modificationChanged[bool].connect(self.onModificationChanged)
self.saveAction = action = QAction("&Save", self.text)
action.setToolTip("Save script to file")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.setShortcutContext(Qt.WidgetWithChildrenShortcut)
action.triggered.connect(self.saveScript)
self.consoleBox = gui.vBox(self, 'Console')
self.splitCanvas.addWidget(self.consoleBox)
self.console = PythonConsole({}, self)
self.consoleBox.layout().addWidget(self.console)
self.console.document().setDefaultFont(QFont(defaultFont))
self.consoleBox.setAlignment(Qt.AlignBottom)
self.console.setTabStopWidth(4)
select_row(self.libraryView, self.currentScriptIndex)
self.restoreScriptText()
self.splitCanvas.setSizes([2, 1])
if self.splitterState is not None:
self.splitCanvas.restoreState(QByteArray(self.splitterState))
self.splitCanvas.splitterMoved[int, int].connect(self.onSpliterMoved)
self.controlArea.layout().addStretch(1)
self.resize(800, 600)
def storeSpecificSettings(self):
self.saveScriptText()
def restoreScriptText(self):
if self.scriptText is not None:
current = self.text.toPlainText()
# do not mark scripts as modified
if self.scriptText != current:
self.text.document().setPlainText(self.scriptText)
def saveScriptText(self):
self.scriptText = self.text.toPlainText()
def handle_input(self, obj, id, signal):
id = id[0]
dic = getattr(self, signal)
if obj is None:
if id in dic.keys():
del dic[id]
else:
dic[id] = obj
@Inputs.data
def set_data(self, data, id):
self.handle_input(data, id, "data")
@Inputs.learner
def set_learner(self, data, id):
self.handle_input(data, id, "learner")
@Inputs.classifier
def set_classifier(self, data, id):
self.handle_input(data, id, "classifier")
@Inputs.object
def set_object(self, data, id):
self.handle_input(data, id, "object")
def handleNewSignals(self):
self.commit()
def selectedScriptIndex(self):
rows = self.libraryView.selectionModel().selectedRows()
if rows:
return [i.row() for i in rows][0]
else:
return None
def setSelectedScript(self, index):
select_row(self.libraryView, index)
def onAddScript(self, *args):
self.libraryList.append(Script("New script", self.text.toPlainText(), 0))
self.setSelectedScript(len(self.libraryList) - 1)
def onAddScriptFromFile(self, *args):
filename, _ = QFileDialog.getOpenFileName(
self, 'Open Python Script',
os.path.expanduser("~/"),
'Python files (*.py)\nAll files(*.*)'
)
if filename:
name = os.path.basename(filename)
# TODO: use `tokenize.detect_encoding`
with open(filename, encoding="utf-8") as f:
contents = f.read()
self.libraryList.append(Script(name, contents, 0, filename))
self.setSelectedScript(len(self.libraryList) - 1)
def onRemoveScript(self, *args):
index = self.selectedScriptIndex()
if index is not None:
del self.libraryList[index]
select_row(self.libraryView, max(index - 1, 0))
def onSaveScriptToFile(self, *args):
index = self.selectedScriptIndex()
if index is not None:
self.saveScript()
def onSelectedScriptChanged(self, selected, deselected):
index = [i.row() for i in selected.indexes()]
if index:
current = index[0]
if current >= len(self.libraryList):
self.addNewScriptAction.trigger()
return
self.text.setDocument(self.documentForScript(current))
self.currentScriptIndex = current
def documentForScript(self, script=0):
if type(script) != Script:
script = self.libraryList[script]
if script not in self._cachedDocuments:
doc = QTextDocument(self)
doc.setDocumentLayout(QPlainTextDocumentLayout(doc))
doc.setPlainText(script.script)
doc.setDefaultFont(QFont(self.defaultFont))
doc.highlighter = PythonSyntaxHighlighter(doc)
doc.modificationChanged[bool].connect(self.onModificationChanged)
doc.setModified(False)
self._cachedDocuments[script] = doc
return self._cachedDocuments[script]
def commitChangesToLibrary(self, *args):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].script = self.text.toPlainText()
self.text.document().setModified(False)
self.libraryList.emitDataChanged(index)
def onModificationChanged(self, modified):
index = self.selectedScriptIndex()
if index is not None:
self.libraryList[index].flags = Script.Modified if modified else 0
self.libraryList.emitDataChanged(index)
def onSpliterMoved(self, pos, ind):
self.splitterState = bytes(self.splitCanvas.saveState())
def restoreSaved(self):
index = self.selectedScriptIndex()
if index is not None:
self.text.document().setPlainText(self.libraryList[index].script)
self.text.document().setModified(False)
def saveScript(self):
index = self.selectedScriptIndex()
if index is not None:
script = self.libraryList[index]
filename = script.filename
else:
filename = os.path.expanduser("~/")
filename, _ = QFileDialog.getSaveFileName(
self, 'Save Python Script',
filename,
'Python files (*.py)\nAll files(*.*)'
)
if filename:
fn = ""
head, tail = os.path.splitext(filename)
if not tail:
fn = head + ".py"
else:
fn = filename
f = open(fn, 'w')
f.write(self.text.toPlainText())
f.close()
def initial_locals_state(self):
d = {}
for name in self.signal_names:
value = getattr(self, name)
all_values = list(value.values())
one_value = all_values[0] if len(all_values) == 1 else None
d["in_" + name + "s"] = all_values
d["in_" + name] = one_value
return d
def commit(self):
self.Error.clear()
self._script = str(self.text.toPlainText())
lcls = self.initial_locals_state()
lcls["_script"] = str(self.text.toPlainText())
self.console.updateLocals(lcls)
self.console.write("\nRunning script:\n")
self.console.push("exec(_script)")
self.console.new_prompt(sys.ps1)
for signal in self.signal_names:
out_var = self.console.locals.get("out_" + signal)
signal_type = getattr(self.Outputs, signal).type
if not isinstance(out_var, signal_type) and out_var is not None:
self.Error.add_message(signal,
"'{}' has to be an instance of '{}'.".
format(signal, signal_type.__name__))
getattr(self.Error, signal)()
out_var = None
getattr(self.Outputs, signal).send(out_var)
class OWWordList(OWWidget):
name = "Word List"
description = "Create a list of words."
icon = "icons/WordList.svg"
priority = 1000
class Inputs:
words = Input("Words", Table)
class Outputs:
selected_words = Output("Selected Words", Table)
words = Output("Words", Table, dynamic=False)
class Warning(OWWidget.Warning):
no_string_vars = Msg("Input needs at least one Text variable.")
NONE, CACHED, LIBRARY = range(3) # library list modification types
want_main_area = False
resizing_enabled = True
settingsHandler = DomainContextHandler()
word_list_library: List[Dict] = Setting([
{
"name": WordList.generate_word_list_name([]),
"words": []
},
])
word_list_index: int = Setting(0)
words_var: Optional[StringVariable] = ContextSetting(None)
update_rule_index: int = Setting(UpdateRules.INTERSECT)
words: List[str] = Setting(None, schema_only=True)
selected_words: Set[str] = Setting(set(), schema_only=True)
def __init__(self):
super().__init__(self)
flags = Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable
self.library_model = PyListModel([], self, flags=flags)
self.words_model = PyListModel([], self, flags=flags, enable_dnd=True)
self.library_view: QListView = None
self.words_view: ListView = None
self.__input_words_model = DomainModel(valid_types=(StringVariable, ))
self.__input_words: Optional[Table] = None
self.__library_box: QGroupBox = gui.vBox(None, "Library")
self.__input_box: QGroupBox = gui.vBox(None, "Input")
self.__words_box: QGroupBox = gui.vBox(None, box=True)
self.__update_rule_rb: QRadioButton = None
self.__add_word_action: QAction = None
self.__remove_word_action: QAction = None
self._setup_gui()
self._restore_state()
self.settingsAboutToBePacked.connect(self._save_state)
def _setup_gui(self):
layout = QGridLayout()
gui.widgetBox(self.controlArea, orientation=layout)
self._setup_library_box()
self._setup_input_box()
self._setup_words_box()
layout.addWidget(self.__library_box, 0, 0)
layout.addWidget(self.__input_box, 1, 0)
layout.addWidget(self.__words_box, 0, 1, 0, 1)
def _setup_library_box(self):
self.library_view = QListView(
editTriggers=QListView.DoubleClicked | QListView.EditKeyPressed,
minimumWidth=200,
sizePolicy=QSizePolicy(QSizePolicy.Ignored, QSizePolicy.Expanding),
)
self.library_view.setItemDelegate(WordListItemDelegate(self))
self.library_view.setModel(self.library_model)
self.library_view.selectionModel().selectionChanged.connect(
self.__on_library_selection_changed)
self.__library_box.layout().setSpacing(1)
self.__library_box.layout().addWidget(self.library_view)
actions_widget = ModelActionsWidget()
actions_widget.layout().setSpacing(1)
action = QAction("+", self)
action.setToolTip("Add a new word list to the library")
action.triggered.connect(self.__on_add_word_list)
actions_widget.addAction(action)
action = QAction("\N{MINUS SIGN}", self)
action.setToolTip("Remove word list from library")
action.triggered.connect(self.__on_remove_word_list)
actions_widget.addAction(action)
action = QAction("Update", self)
action.setToolTip("Save changes in the editor to library")
action.setShortcut(QKeySequence(QKeySequence.Save))
action.triggered.connect(self.__on_update_word_list)
actions_widget.addAction(action)
gui.rubber(actions_widget.layout())
action = QAction("More", self, toolTip="More actions")
new_from_file = QAction("Import Words from File", self)
new_from_file.triggered.connect(self.__on_import_word_list)
save_to_file = QAction("Save Words to File", self)
save_to_file.setShortcut(QKeySequence(QKeySequence.SaveAs))
save_to_file.triggered.connect(self.__on_save_word_list)
menu = QMenu(actions_widget)
menu.addAction(new_from_file)
menu.addAction(save_to_file)
action.setMenu(menu)
button = actions_widget.addAction(action)
button.setPopupMode(QToolButton.InstantPopup)
self.__library_box.layout().addWidget(actions_widget)
def __on_library_selection_changed(self, selected: QItemSelection, *_):
index = [i.row() for i in selected.indexes()]
if index:
current = index[0]
word_list: WordList = self.library_model[current]
self.word_list_index = current
self.selected_words = set()
self.words_model.wrap(list(word_list.cached_words))
self._apply_update_rule()
def __on_add_word_list(self):
taken = [l.name for l in self.library_model]
name = WordList.generate_word_list_name(taken)
word_list = WordList(name, self.words_model[:])
self.library_model.append(word_list)
self._set_selected_word_list(len(self.library_model) - 1)
def __on_remove_word_list(self):
index = self._get_selected_word_list_index()
if index is not None:
del self.library_model[index]
self._set_selected_word_list(max(index - 1, 0))
self._apply_update_rule()
def __on_update_word_list(self):
self._set_word_list_modified(mod_type=self.LIBRARY)
def __on_import_word_list(self):
filename, _ = QFileDialog.getOpenFileName(
self, "Open Word List", os.path.expanduser("~/"),
"Text files (*.txt)\nAll files(*.*)")
if filename:
name = os.path.basename(filename)
with open(filename, encoding="utf-8") as f:
words = [line.strip() for line in f.readlines()]
self.library_model.append(WordList(name, words, filename=filename))
self._set_selected_word_list(len(self.library_model) - 1)
self._apply_update_rule()
def __on_save_word_list(self):
index = self._get_selected_word_list_index()
if index is not None:
word_list = self.library_model[index]
filename = word_list.filename
else:
filename = os.path.expanduser("~/")
filename, _ = QFileDialog.getSaveFileName(
self, "Save Word List", filename,
"Text files (*.txt)\nAll files(*.*)")
if filename:
head, tail = os.path.splitext(filename)
if not tail:
filename = head + ".txt"
with open(filename, "w", encoding="utf-8") as f:
for word in self.words_model:
f.write(f"{word}\n")
def _setup_input_box(self):
gui.comboBox(self.__input_box,
self,
"words_var",
label="Word variable:",
orientation=Qt.Vertical,
model=self.__input_words_model,
callback=self._apply_update_rule)
gui.radioButtons(self.__input_box,
self,
"update_rule_index",
UpdateRules.ITEMS,
label="Update: ",
orientation=Qt.Vertical,
callback=self.__on_update_rule_changed)
self.__input_box.setEnabled(False)
def __on_update_rule_changed(self):
self._enable_words_actions()
self._apply_update_rule()
def _setup_words_box(self):
self.words_view = ListView()
self.words_view.drop_finished.connect(self.__on_words_data_changed)
self.words_view.setModel(self.words_model)
self.words_view.selectionModel().selectionChanged.connect(
self.__on_words_selection_changed)
self.words_model.dataChanged.connect(self.__on_words_data_changed)
self.__words_box.layout().setSpacing(1)
self.__words_box.layout().addWidget(self.words_view)
actions_widget = ModelActionsWidget()
actions_widget.layout().setSpacing(1)
action = QAction("+", self.words_view, toolTip="Add a new word")
action.triggered.connect(self.__on_add_word)
actions_widget.addAction(action)
self.__add_word_action = action
action = QAction("\N{MINUS SIGN}", self, toolTip="Remove word")
action.triggered.connect(self.__on_remove_word)
actions_widget.addAction(action)
self.__remove_word_action = action
gui.rubber(actions_widget)
action = QAction("Sort", self)
action.setToolTip("Sort words alphabetically")
action.triggered.connect(self.__on_apply_sorting)
actions_widget.addAction(action)
self.__words_box.layout().addWidget(actions_widget)
def __on_words_data_changed(self):
self._set_word_list_modified(mod_type=self.CACHED)
self.commit()
def __on_words_selection_changed(self):
self.commit()
def __on_add_word(self):
row = self.words_model.rowCount()
if not self.words_model.insertRow(self.words_model.rowCount()):
return
with disconnected(self.words_view.selectionModel().selectionChanged,
self.__on_words_selection_changed):
self._set_selected_words([0])
index = self.words_model.index(row, 0)
self.words_view.setCurrentIndex(index)
self.words_model.setItemData(index, {Qt.EditRole: ""})
self.words_view.edit(index)
def __on_remove_word(self):
rows = self.words_view.selectionModel().selectedRows(0)
if not rows:
return
indices = sorted([row.row() for row in rows], reverse=True)
with disconnected(self.words_view.selectionModel().selectionChanged,
self.__on_words_selection_changed):
for index in indices:
self.words_model.removeRow(index)
if self.words_model:
self._set_selected_words([max(0, indices[-1] - 1)])
self.__on_words_data_changed()
def __on_apply_sorting(self):
if not self.words_model:
return
words = self.words_model[:]
mask = np.zeros(len(words), dtype=bool)
selection = self._get_selected_words_indices()
if selection:
mask[selection] = True
indices = np.argsort(words)
self.words_model.wrap([words[i] for i in indices])
self._set_word_list_modified(mod_type=self.CACHED)
if selection:
self._set_selected_words(list(np.flatnonzero(mask[indices])))
else:
self.commit()
@Inputs.words
def set_words(self, words: Optional[Table]):
self.closeContext()
self.__input_words = words
self._check_input_words()
self._init_controls()
self.openContext(self.__input_words)
self._apply_update_rule()
def _check_input_words(self):
self.Warning.no_string_vars.clear()
if self.__input_words:
metas = self.__input_words.domain.metas
if not any(isinstance(m, StringVariable) for m in metas):
self.Warning.no_string_vars()
self.__input_words = None
def _init_controls(self):
words = self.__input_words
domain = words.domain if words is not None else None
self.__input_words_model.set_domain(domain)
if len(self.__input_words_model) > 0:
self.words_var = self.__input_words_model[0]
self.__input_box.setEnabled(bool(self.__input_words_model))
self._enable_words_actions()
def _enable_words_actions(self):
if bool(self.__input_words_model) \
and self.update_rule_index != UpdateRules.LIBRARY:
self.words_view.setEditTriggers(QListView.NoEditTriggers)
self.__add_word_action.setEnabled(False)
self.__remove_word_action.setEnabled(False)
else:
self.words_view.setEditTriggers(QListView.DoubleClicked
| QListView.EditKeyPressed)
self.__add_word_action.setEnabled(True)
self.__remove_word_action.setEnabled(True)
def _apply_update_rule(self):
lib_index = self._get_selected_word_list_index()
lib_words, in_words, update_rule = [], [], UpdateRules.LIBRARY
if lib_index is not None:
lib_words = self.library_model[lib_index].cached_words
else:
lib_words = self.words_model[:]
if self.__input_words is not None:
in_words = self.__input_words.get_column_view(self.words_var)[0]
in_words = list(in_words)
update_rule = self.update_rule_index
UpdateRules.update(self.words_model, lib_words, in_words, update_rule)
if lib_index is not None:
cached = self.library_model[lib_index].cached_words
modified = WordList.NotModified if cached == self.words_model[:] \
else WordList.Modified
self.library_model[lib_index].update_rule_flag = modified
self._set_word_list_modified(mod_type=self.NONE)
self.library_view.repaint()
# Apply selection. selection_changed invokes commit().
# If there is no selection, call commit explicitly.
if any(w in self.selected_words for w in self.words_model):
self.set_selected_words()
self.words_view.repaint()
else:
self.commit()
def commit(self):
selection = self._get_selected_words_indices()
self.selected_words = set(np.array(self.words_model)[selection])
words, selected_words = None, None
if self.words_model:
_words = create_words_table(self.words_model)
if selection:
selected_words = _words[selection]
words = create_annotated_table(_words, selection)
self.Outputs.words.send(words)
self.Outputs.selected_words.send(selected_words)
def _set_word_list_modified(self, mod_type):
index = self._get_selected_word_list_index()
if index is not None:
if mod_type == self.LIBRARY:
self.library_model[index].words = self.words_model[:]
self.library_model[index].cached_words = self.words_model[:]
self.library_model[index].update_rule_flag \
= WordList.NotModified
elif mod_type == self.CACHED:
self.library_model[index].cached_words = self.words_model[:]
elif mod_type == self.NONE:
pass
else:
raise NotImplementedError
self.library_model.emitDataChanged(index)
self.library_view.repaint()
def _set_selected_word_list(self, index: int):
sel_model: QItemSelectionModel = self.library_view.selectionModel()
sel_model.select(self.library_model.index(index, 0),
QItemSelectionModel.ClearAndSelect)
def _get_selected_word_list_index(self) -> Optional[int]:
rows = self.library_view.selectionModel().selectedRows()
return rows[0].row() if rows else None
def _set_selected_words(self, indices: List[int]):
selection = QItemSelection()
sel_model: QItemSelectionModel = self.words_view.selectionModel()
for i in indices:
selection.append(QItemSelectionRange(self.words_model.index(i, 0)))
sel_model.select(selection, QItemSelectionModel.ClearAndSelect)
def _get_selected_words_indices(self) -> List[int]:
rows = self.words_view.selectionModel().selectedRows()
return [row.row() for row in rows]
def set_selected_words(self):
if self.selected_words:
indices = [
i for i, w in enumerate(self.words_model)
if w in self.selected_words
]
self._set_selected_words(indices)
def _restore_state(self):
source = [WordList.from_dict(s) for s in self.word_list_library]
self.library_model.wrap(source)
# __on_library_selection_changed() (invoked by _set_selected_word_list)
# clears self.selected_words
selected_words = self.selected_words
self._set_selected_word_list(self.word_list_index)
if self.words is not None:
self.words_model.wrap(list(self.words))
self._set_word_list_modified(mod_type=self.CACHED)
if selected_words:
self.selected_words = selected_words
self.set_selected_words()
elif len(self.word_list_library) > self.word_list_index and \
self.word_list_library[self.word_list_index] != self.words:
self.commit()
def _save_state(self):
self.word_list_library = [s.as_dict() for s in self.library_model]
self.words = self.words_model[:]
def send_report(self):
library = self.library_model[self.word_list_index].name \
if self.library_model else "/"
settings = [("Library", library)]
if self.__input_words:
self.report_data("Input Words", self.__input_words)
settings.append(("Word variable", self.words_var))
rule = UpdateRules.ITEMS[self.update_rule_index]
settings.append(("Update", rule))
self.report_items("Settings", settings)
self.report_paragraph("Words", ", ".join(self.words_model[:]))
