class OWDataSets(widget.OWWidget):
name = "Data Sets"
description = "Load a data set from an online repository"
icon = "icons/DataSets.svg"
priority = 20
replaces = ["orangecontrib.prototypes.widgets.owdatasets.OWDataSets"]
# The following constants can be overridden in a subclass
# to reuse this widget for a different repository
# Take care when refactoring! (used in e.g. single-cell)
INDEX_URL = "http://datasets.orange.biolab.si/"
DATASET_DIR = "datasets"
class Error(widget.OWWidget.Error):
no_remote_datasets = Msg("Could not fetch data set list")
class Warning(widget.OWWidget.Warning):
only_local_datasets = Msg("Could not fetch data sets list, only local "
"cached data sets are shown")
class Outputs:
data = Output("Data", Orange.data.Table)
#: Selected data set id
selected_id = settings.Setting(None) # type: Optional[str]
auto_commit = settings.Setting(False) # type: bool
#: main area splitter state
splitter_state = settings.Setting(b'') # type: bytes
header_state = settings.Setting(b'') # type: bytes
def __init__(self):
super().__init__()
self.local_cache_path = os.path.join(data_dir(), self.DATASET_DIR)
self.__awaiting_state = None # type: Optional[_FetchState]
box = gui.widgetBox(self.controlArea, "Info")
self.infolabel = QLabel(text="Initializing...\n\n")
box.layout().addWidget(self.infolabel)
gui.widgetLabel(self.mainArea, "Filter")
self.filterLineEdit = QLineEdit(
textChanged=self.filter
)
self.mainArea.layout().addWidget(self.filterLineEdit)
self.splitter = QSplitter(orientation=Qt.Vertical)
self.view = QTreeView(
sortingEnabled=True,
selectionMode=QTreeView.SingleSelection,
alternatingRowColors=True,
rootIsDecorated=False,
editTriggers=QTreeView.NoEditTriggers,
)
box = gui.widgetBox(self.splitter, "Description", addToLayout=False)
self.descriptionlabel = QLabel(
wordWrap=True,
textFormat=Qt.RichText,
)
self.descriptionlabel = QTextBrowser(
openExternalLinks=True,
textInteractionFlags=(Qt.TextSelectableByMouse |
Qt.LinksAccessibleByMouse)
)
self.descriptionlabel.setFrameStyle(QTextBrowser.NoFrame)
# no (white) text background
self.descriptionlabel.viewport().setAutoFillBackground(False)
box.layout().addWidget(self.descriptionlabel)
self.splitter.addWidget(self.view)
self.splitter.addWidget(box)
self.splitter.setSizes([300, 200])
self.splitter.splitterMoved.connect(
lambda:
setattr(self, "splitter_state", bytes(self.splitter.saveState()))
)
self.mainArea.layout().addWidget(self.splitter)
self.controlArea.layout().addStretch(10)
gui.auto_commit(self.controlArea, self, "auto_commit", "Send Data")
model = QStandardItemModel(self)
model.setHorizontalHeaderLabels(HEADER)
proxy = QSortFilterProxyModel()
proxy.setSourceModel(model)
proxy.setFilterKeyColumn(-1)
proxy.setFilterCaseSensitivity(False)
self.view.setModel(proxy)
if self.splitter_state:
self.splitter.restoreState(self.splitter_state)
self.view.setItemDelegateForColumn(
Header.Size, SizeDelegate(self))
self.view.setItemDelegateForColumn(
Header.Local, gui.IndicatorItemDelegate(self, role=Qt.DisplayRole))
self.view.setItemDelegateForColumn(
Header.Instances, NumericalDelegate(self))
self.view.setItemDelegateForColumn(
Header.Variables, NumericalDelegate(self))
self.view.resizeColumnToContents(Header.Local)
if self.header_state:
self.view.header().restoreState(self.header_state)
self.setBlocking(True)
self.setStatusMessage("Initializing")
self._executor = ThreadPoolExecutor(max_workers=1)
f = self._executor.submit(self.list_remote)
w = FutureWatcher(f, parent=self)
w.done.connect(self.__set_index)
@Slot(object)
def __set_index(self, f):
# type: (Future) -> None
# set results from `list_remote` query.
assert QThread.currentThread() is self.thread()
assert f.done()
self.setBlocking(False)
self.setStatusMessage("")
allinfolocal = self.list_local()
try:
res = f.result()
except Exception:
log.exception("Error while fetching updated index")
if not allinfolocal:
self.Error.no_remote_datasets()
else:
self.Warning.only_local_datasets()
res = {}
allinforemote = res # type: Dict[Tuple[str, str], dict]
allkeys = set(allinfolocal)
if allinforemote is not None:
allkeys = allkeys | set(allinforemote)
allkeys = sorted(allkeys)
def info(file_path):
if file_path in allinforemote:
info = allinforemote[file_path]
else:
info = allinfolocal[file_path]
islocal = file_path in allinfolocal
isremote = file_path in allinforemote
outdated = islocal and isremote and (
allinforemote[file_path].get('version', '') !=
allinfolocal[file_path].get('version', ''))
islocal &= not outdated
prefix = os.path.join('', *file_path[:-1])
filename = file_path[-1]
return namespace(
prefix=prefix, filename=filename,
title=info.get("title", filename),
datetime=info.get("datetime", None),
description=info.get("description", None),
references=info.get("references", []),
seealso=info.get("seealso", []),
source=info.get("source", None),
year=info.get("year", None),
instances=info.get("instances", None),
variables=info.get("variables", None),
target=info.get("target", None),
missing=info.get("missing", None),
tags=info.get("tags", []),
size=info.get("size", None),
islocal=islocal,
outdated=outdated
)
model = QStandardItemModel(self)
model.setHorizontalHeaderLabels(HEADER)
current_index = -1
for i, file_path in enumerate(allkeys):
datainfo = info(file_path)
item1 = QStandardItem()
item1.setData(" " if datainfo.islocal else "", Qt.DisplayRole)
item1.setData(datainfo, Qt.UserRole)
item2 = QStandardItem(datainfo.title)
item3 = QStandardItem()
item3.setData(datainfo.size, Qt.DisplayRole)
item4 = QStandardItem()
item4.setData(datainfo.instances, Qt.DisplayRole)
item5 = QStandardItem()
item5.setData(datainfo.variables, Qt.DisplayRole)
item6 = QStandardItem()
item6.setData(datainfo.target, Qt.DisplayRole)
if datainfo.target:
item6.setIcon(variable_icon(datainfo.target))
item7 = QStandardItem()
item7.setData(", ".join(datainfo.tags) if datainfo.tags else "",
Qt.DisplayRole)
row = [item1, item2, item3, item4, item5, item6, item7]
model.appendRow(row)
if os.path.join(*file_path) == self.selected_id:
current_index = i
hs = self.view.header().saveState()
model_ = self.view.model().sourceModel()
self.view.model().setSourceModel(model)
self.view.header().restoreState(hs)
model_.deleteLater()
model_.setParent(None)
self.view.selectionModel().selectionChanged.connect(
self.__on_selection
)
# Update the info text
self.infolabel.setText(format_info(model.rowCount(), len(allinfolocal)))
if current_index != -1:
selmodel = self.view.selectionModel()
selmodel.select(
self.view.model().mapFromSource(model.index(current_index, 0)),
QItemSelectionModel.ClearAndSelect | QItemSelectionModel.Rows)
def __update_cached_state(self):
model = self.view.model().sourceModel()
localinfo = self.list_local()
assert isinstance(model, QStandardItemModel)
allinfo = []
for i in range(model.rowCount()):
item = model.item(i, 0)
info = item.data(Qt.UserRole)
info.islocal = (info.prefix, info.filename) in localinfo
item.setData(" " if info.islocal else "", Qt.DisplayRole)
allinfo.append(info)
self.infolabel.setText(format_info(
model.rowCount(), sum(info.islocal for info in allinfo)))
def selected_dataset(self):
"""
Return the current selected data set info or None if not selected
Returns
-------
info : Optional[namespace]
"""
rows = self.view.selectionModel().selectedRows(0)
assert 0 <= len(rows) <= 1
current = rows[0] if rows else None # type: Optional[QModelIndex]
if current is not None:
info = current.data(Qt.UserRole)
assert isinstance(info, namespace)
else:
info = None
return info
def filter(self):
filter_string = self.filterLineEdit.text().strip()
proxyModel = self.view.model()
if proxyModel:
proxyModel.setFilterFixedString(filter_string)
def __on_selection(self):
# Main data sets view selection has changed
rows = self.view.selectionModel().selectedRows(0)
assert 0 <= len(rows) <= 1
current = rows[0] if rows else None # type: Optional[QModelIndex]
if current is not None:
current = self.view.model().mapToSource(current)
di = current.data(Qt.UserRole)
text = description_html(di)
self.descriptionlabel.setText(text)
self.selected_id = os.path.join(di.prefix, di.filename)
else:
self.descriptionlabel.setText("")
self.selected_id = None
self.commit()
def commit(self):
"""
Commit a dataset to the output immediately (if available locally) or
schedule download background and an eventual send.
During the download the widget is in blocking state
(OWWidget.isBlocking)
"""
di = self.selected_dataset()
if di is not None:
self.Error.clear()
if self.__awaiting_state is not None:
# disconnect from the __commit_complete
self.__awaiting_state.watcher.done.disconnect(
self.__commit_complete)
# .. and connect to update_cached_state
# self.__awaiting_state.watcher.done.connect(
# self.__update_cached_state)
# TODO: There are possible pending __progress_advance queued
self.__awaiting_state.pb.advance.disconnect(
self.__progress_advance)
self.progressBarFinished(processEvents=None)
self.__awaiting_state = None
if not di.islocal:
pr = progress()
callback = lambda pr=pr: pr.advance.emit()
pr.advance.connect(self.__progress_advance, Qt.QueuedConnection)
self.progressBarInit(processEvents=None)
self.setStatusMessage("Fetching...")
self.setBlocking(True)
f = self._executor.submit(
ensure_local, self.INDEX_URL, di.prefix, di.filename,
self.local_cache_path, force=di.outdated,
progress_advance=callback)
w = FutureWatcher(f, parent=self)
w.done.connect(self.__commit_complete)
self.__awaiting_state = _FetchState(f, w, pr)
else:
self.setStatusMessage("")
self.setBlocking(False)
self.commit_cached(di.prefix, di.filename)
else:
self.Outputs.data.send(None)
@Slot(object)
def __commit_complete(self, f):
# complete the commit operation after the required file has been
# downloaded
assert QThread.currentThread() is self.thread()
assert self.__awaiting_state is not None
assert self.__awaiting_state.future is f
if self.isBlocking():
self.progressBarFinished(processEvents=None)
self.setBlocking(False)
self.setStatusMessage("")
self.__awaiting_state = None
try:
path = f.result()
except Exception as ex:
log.exception("Error:")
self.error(format_exception(ex))
path = None
self.__update_cached_state()
if path is not None:
data = Orange.data.Table(path)
else:
data = None
self.Outputs.data.send(data)
def commit_cached(self, prefix, filename):
path = LocalFiles(self.local_cache_path).localpath(prefix, filename)
self.Outputs.data.send(Orange.data.Table(path))
@Slot()
def __progress_advance(self):
assert QThread.currentThread() is self.thread()
self.progressBarAdvance(1, processEvents=None)
def onDeleteWidget(self):
super().onDeleteWidget()
if self.__awaiting_state is not None:
self.__awaiting_state.watcher.done.disconnect(self.__commit_complete)
self.__awaiting_state.pb.advance.disconnect(self.__progress_advance)
self.__awaiting_state = None
def sizeHint(self):
return QSize(900, 600)
def closeEvent(self, event):
self.splitter_state = bytes(self.splitter.saveState())
self.header_state = bytes(self.view.header().saveState())
super().closeEvent(event)
def list_remote(self):
# type: () -> Dict[Tuple[str, str], dict]
client = ServerFiles(server=self.INDEX_URL)
return client.allinfo()
def list_local(self):
# type: () -> Dict[Tuple[str, str], dict]
return LocalFiles(self.local_cache_path).allinfo()
class OWDataSets(OWWidget):
name = "数据集(Datasets)"
description = "从联机存储库加载数据集"
icon = "icons/DataSets.svg"
priority = 20
replaces = ["orangecontrib.prototypes.widgets.owdatasets.OWDataSets"]
keywords = ["online"]
want_control_area = False
# The following constants can be overridden in a subclass
# to reuse this widget for a different repository
# Take care when refactoring! (used in e.g. single-cell)
INDEX_URL = "https://datasets.biolab.si/"
DATASET_DIR = "datasets"
# override HEADER_SCHEMA to define new columns
# if schema is changed override methods: self.assign_delegates and
# self.create_model
HEADER_SCHEMA = [
['islocal', {'label': ''}],
['title', {'label': '标题'}],
['size', {'label': '大小'}],
['instances', {'label': '样本数目'}],
['variables', {'label': '变量数目'}],
['target', {'label': '目标'}],
['tags', {'label': '标签'}]
] # type: List[str, dict]
IndicatorBrushes = (QBrush(Qt.darkGray), QBrush(QColor(0, 192, 0)))
class Error(OWWidget.Error):
no_remote_datasets = Msg("Could not fetch dataset list")
class Warning(OWWidget.Warning):
only_local_datasets = Msg("Could not fetch datasets list, only local "
"cached datasets are shown")
class Outputs:
data = Output("数据(Data)", Orange.data.Table, replaces=['Data'])
#: Selected dataset id
selected_id = settings.Setting(None) # type: Optional[str]
#: main area splitter state
splitter_state = settings.Setting(b'') # type: bytes
header_state = settings.Setting(b'') # type: bytes
def __init__(self):
super().__init__()
self.allinfo_local = {}
self.allinfo_remote = {}
self.local_cache_path = os.path.join(data_dir(), self.DATASET_DIR)
# current_output does not equal selected_id when, for instance, the
# data is still downloading
self.current_output = None
self._header_labels = [
header['label'] for _, header in self.HEADER_SCHEMA]
self._header_index = namedtuple(
'_header_index', [info_tag for info_tag, _ in self.HEADER_SCHEMA])
self.Header = self._header_index(
*[index for index, _ in enumerate(self._header_labels)])
self.__awaiting_state = None # type: Optional[_FetchState]
self.filterLineEdit = QLineEdit(
textChanged=self.filter, placeholderText="Search for data set ..."
)
self.mainArea.layout().addWidget(self.filterLineEdit)
self.splitter = QSplitter(orientation=Qt.Vertical)
self.view = TreeViewWithReturn(
sortingEnabled=True,
selectionMode=QTreeView.SingleSelection,
alternatingRowColors=True,
rootIsDecorated=False,
editTriggers=QTreeView.NoEditTriggers,
uniformRowHeights=True,
toolTip="Press Return or double-click to send"
)
# the method doesn't exists yet, pylint: disable=unnecessary-lambda
self.view.doubleClicked.connect(self.commit)
self.view.returnPressed.connect(self.commit)
box = gui.widgetBox(self.splitter, "说明", addToLayout=False)
self.descriptionlabel = QLabel(
wordWrap=True,
textFormat=Qt.RichText,
)
self.descriptionlabel = QTextBrowser(
openExternalLinks=True,
textInteractionFlags=(Qt.TextSelectableByMouse |
Qt.LinksAccessibleByMouse)
)
self.descriptionlabel.setFrameStyle(QTextBrowser.NoFrame)
# no (white) text background
self.descriptionlabel.viewport().setAutoFillBackground(False)
box.layout().addWidget(self.descriptionlabel)
self.splitter.addWidget(self.view)
self.splitter.addWidget(box)
self.splitter.setSizes([300, 200])
self.splitter.splitterMoved.connect(
lambda:
setattr(self, "splitter_state", bytes(self.splitter.saveState()))
)
self.mainArea.layout().addWidget(self.splitter)
proxy = QSortFilterProxyModel()
proxy.setFilterKeyColumn(-1)
proxy.setFilterCaseSensitivity(False)
self.view.setModel(proxy)
if self.splitter_state:
self.splitter.restoreState(self.splitter_state)
self.assign_delegates()
self.setBlocking(True)
self.setStatusMessage("Initializing")
self._executor = ThreadPoolExecutor(max_workers=1)
f = self._executor.submit(self.list_remote)
w = FutureWatcher(f, parent=self)
w.done.connect(self.__set_index)
def assign_delegates(self):
# NOTE: All columns must have size hinting delegates.
# QTreeView queries only the columns displayed in the viewport so
# the layout would be different depending in the horizontal scroll
# position
self.view.setItemDelegate(UniformHeightDelegate(self))
self.view.setItemDelegateForColumn(
self.Header.islocal,
UniformHeightIndicatorDelegate(self, role=Qt.DisplayRole, indicatorSize=4)
)
self.view.setItemDelegateForColumn(
self.Header.size,
SizeDelegate(self)
)
self.view.setItemDelegateForColumn(
self.Header.instances,
NumericalDelegate(self)
)
self.view.setItemDelegateForColumn(
self.Header.variables,
NumericalDelegate(self)
)
self.view.resizeColumnToContents(self.Header.islocal)
def _parse_info(self, file_path):
if file_path in self.allinfo_remote:
info = self.allinfo_remote[file_path]
else:
info = self.allinfo_local[file_path]
islocal = file_path in self.allinfo_local
isremote = file_path in self.allinfo_remote
outdated = islocal and isremote and (
self.allinfo_remote[file_path].get('version', '')
!= self.allinfo_local[file_path].get('version', '')
)
islocal &= not outdated
prefix = os.path.join('', *file_path[:-1])
filename = file_path[-1]
return Namespace(file_path=file_path, prefix=prefix, filename=filename,
islocal=islocal, outdated=outdated, **info)
def create_model(self):
allkeys = set(self.allinfo_local) | set(self.allinfo_remote)
allkeys = sorted(allkeys)
model = QStandardItemModel(self)
model.setHorizontalHeaderLabels(self._header_labels)
current_index = -1
for i, file_path in enumerate(allkeys):
datainfo = self._parse_info(file_path)
item1 = QStandardItem()
item1.setData(" " if datainfo.islocal else "", Qt.DisplayRole)
item1.setData(self.IndicatorBrushes[0], Qt.ForegroundRole)
item1.setData(datainfo, Qt.UserRole)
item2 = QStandardItem(datainfo.title)
item3 = QStandardItem()
item3.setData(datainfo.size, Qt.DisplayRole)
item4 = QStandardItem()
item4.setData(datainfo.instances, Qt.DisplayRole)
item5 = QStandardItem()
item5.setData(datainfo.variables, Qt.DisplayRole)
item6 = QStandardItem()
item6.setData(datainfo.target, Qt.DisplayRole)
if datainfo.target:
item6.setIcon(variable_icon(datainfo.target))
item7 = QStandardItem()
item7.setData(", ".join(datainfo.tags) if datainfo.tags else "",
Qt.DisplayRole)
row = [item1, item2, item3, item4, item5, item6, item7]
model.appendRow(row)
if os.path.join(*file_path) == self.selected_id:
current_index = i
return model, current_index
@Slot(object)
def __set_index(self, f):
# type: (Future) -> None
# set results from `list_remote` query.
assert QThread.currentThread() is self.thread()
assert f.done()
self.setBlocking(False)
self.setStatusMessage("")
self.allinfo_local = self.list_local()
try:
self.allinfo_remote = f.result()
except Exception: # anytying can happen, pylint: disable=broad-except
log.exception("Error while fetching updated index")
if not self.allinfo_local:
self.Error.no_remote_datasets()
else:
self.Warning.only_local_datasets()
self.allinfo_remote = {}
model, current_index = self.create_model()
self.view.model().setSourceModel(model)
self.view.selectionModel().selectionChanged.connect(
self.__on_selection
)
self.view.resizeColumnToContents(0)
self.view.setColumnWidth(
1, min(self.view.sizeHintForColumn(1),
self.view.fontMetrics().width("X" * 37)))
header = self.view.header()
header.restoreState(self.header_state)
if current_index != -1:
selmodel = self.view.selectionModel()
selmodel.select(
self.view.model().mapFromSource(model.index(current_index, 0)),
QItemSelectionModel.ClearAndSelect | QItemSelectionModel.Rows)
self.commit()
def __update_cached_state(self):
model = self.view.model().sourceModel()
localinfo = self.list_local()
assert isinstance(model, QStandardItemModel)
allinfo = []
for i in range(model.rowCount()):
item = model.item(i, 0)
info = item.data(Qt.UserRole)
is_local = info.file_path in localinfo
is_current = (is_local and
os.path.join(self.local_cache_path, *info.file_path)
== self.current_output)
item.setData(" " * (is_local + is_current), Qt.DisplayRole)
item.setData(self.IndicatorBrushes[is_current], Qt.ForegroundRole)
allinfo.append(info)
def selected_dataset(self):
"""
Return the current selected dataset info or None if not selected
Returns
-------
info : Optional[Namespace]
"""
rows = self.view.selectionModel().selectedRows(0)
assert 0 <= len(rows) <= 1
current = rows[0] if rows else None # type: Optional[QModelIndex]
if current is not None:
info = current.data(Qt.UserRole)
assert isinstance(info, Namespace)
else:
info = None
return info
def filter(self):
filter_string = self.filterLineEdit.text().strip()
proxyModel = self.view.model()
if proxyModel:
proxyModel.setFilterFixedString(filter_string)
def __on_selection(self):
# Main datasets view selection has changed
rows = self.view.selectionModel().selectedRows(0)
assert 0 <= len(rows) <= 1
current = rows[0] if rows else None # type: Optional[QModelIndex]
if current is not None:
current = self.view.model().mapToSource(current)
di = current.data(Qt.UserRole)
text = description_html(di)
self.descriptionlabel.setText(text)
self.selected_id = os.path.join(di.prefix, di.filename)
else:
self.descriptionlabel.setText("")
self.selected_id = None
def commit(self):
"""
Commit a dataset to the output immediately (if available locally) or
schedule download background and an eventual send.
During the download the widget is in blocking state
(OWWidget.isBlocking)
"""
di = self.selected_dataset()
if di is not None:
self.Error.clear()
if self.__awaiting_state is not None:
# disconnect from the __commit_complete
self.__awaiting_state.watcher.done.disconnect(
self.__commit_complete)
# .. and connect to update_cached_state
# self.__awaiting_state.watcher.done.connect(
# self.__update_cached_state)
# TODO: There are possible pending __progress_advance queued
self.__awaiting_state.pb.advance.disconnect(
self.__progress_advance)
self.progressBarFinished()
self.__awaiting_state = None
if not di.islocal:
pr = progress()
callback = lambda pr=pr: pr.advance.emit()
pr.advance.connect(self.__progress_advance, Qt.QueuedConnection)
self.progressBarInit()
self.setStatusMessage("Fetching...")
self.setBlocking(True)
f = self._executor.submit(
ensure_local, self.INDEX_URL, di.file_path,
self.local_cache_path, force=di.outdated,
progress_advance=callback)
w = FutureWatcher(f, parent=self)
w.done.connect(self.__commit_complete)
self.__awaiting_state = _FetchState(f, w, pr)
else:
self.setStatusMessage("")
self.setBlocking(False)
self.commit_cached(di.file_path)
else:
self.load_and_output(None)
@Slot(object)
def __commit_complete(self, f):
# complete the commit operation after the required file has been
# downloaded
assert QThread.currentThread() is self.thread()
assert self.__awaiting_state is not None
assert self.__awaiting_state.future is f
if self.isBlocking():
self.progressBarFinished()
self.setBlocking(False)
self.setStatusMessage("")
self.__awaiting_state = None
try:
path = f.result()
# anything can happen here, pylint: disable=broad-except
except Exception as ex:
log.exception("Error:")
self.error(format_exception(ex))
path = None
self.load_and_output(path)
def commit_cached(self, file_path):
path = LocalFiles(self.local_cache_path).localpath(*file_path)
self.load_and_output(path)
@Slot()
def __progress_advance(self):
assert QThread.currentThread() is self.thread()
self.progressBarAdvance(1)
def onDeleteWidget(self):
super().onDeleteWidget()
if self.__awaiting_state is not None:
self.__awaiting_state.watcher.done.disconnect(self.__commit_complete)
self.__awaiting_state.pb.advance.disconnect(self.__progress_advance)
self.__awaiting_state = None
@staticmethod
def sizeHint():
return QSize(1100, 500)
def closeEvent(self, event):
self.splitter_state = bytes(self.splitter.saveState())
self.header_state = bytes(self.view.header().saveState())
super().closeEvent(event)
def load_and_output(self, path):
if path is None:
self.Outputs.data.send(None)
else:
data = self.load_data(path)
self.Outputs.data.send(data)
self.current_output = path
self.__update_cached_state()
@staticmethod
def load_data(path):
return Orange.data.Table(path)
def list_remote(self):
# type: () -> Dict[Tuple[str, ...], dict]
client = ServerFiles(server=self.INDEX_URL)
return client.allinfo()
def list_local(self):
# type: () -> Dict[Tuple[str, ...], dict]
return LocalFiles(self.local_cache_path).allinfo()
class OWDataSets(OWWidget):
name = "Datasets"
description = "Load a dataset from an online repository"
icon = "icons/DataSets.svg"
priority = 20
replaces = ["orangecontrib.prototypes.widgets.owdatasets.OWDataSets"]
keywords = ["online"]
# The following constants can be overridden in a subclass
# to reuse this widget for a different repository
# Take care when refactoring! (used in e.g. single-cell)
INDEX_URL = "https://datasets.biolab.si/"
DATASET_DIR = "datasets"
# override HEADER_SCHEMA to define new columns
# if schema is changed override methods: self.assign_delegates and
# self.create_model
HEADER_SCHEMA = [
['islocal', {'label': ''}],
['title', {'label': 'Title'}],
['size', {'label': 'Size'}],
['instances', {'label': 'Instances'}],
['variables', {'label': 'Variables'}],
['target', {'label': 'Target'}],
['tags', {'label': 'Tags'}]
] # type: List[str, dict]
class Error(OWWidget.Error):
no_remote_datasets = Msg("Could not fetch dataset list")
class Warning(OWWidget.Warning):
only_local_datasets = Msg("Could not fetch datasets list, only local "
"cached datasets are shown")
class Outputs:
data = Output("Data", Orange.data.Table)
#: Selected dataset id
selected_id = settings.Setting(None) # type: Optional[str]
auto_commit = settings.Setting(False) # type: bool
#: main area splitter state
splitter_state = settings.Setting(b'') # type: bytes
header_state = settings.Setting(b'') # type: bytes
def __init__(self):
super().__init__()
self.allinfo_local = {}
self.allinfo_remote = {}
self.local_cache_path = os.path.join(data_dir(), self.DATASET_DIR)
self._header_labels = [
header['label'] for _, header in self.HEADER_SCHEMA]
self._header_index = namedtuple(
'_header_index', [info_tag for info_tag, _ in self.HEADER_SCHEMA])
self.Header = self._header_index(
*[index for index, _ in enumerate(self._header_labels)])
self.__awaiting_state = None # type: Optional[_FetchState]
box = gui.widgetBox(self.controlArea, "Info")
self.infolabel = QLabel(text="Initializing...\n\n")
box.layout().addWidget(self.infolabel)
gui.widgetLabel(self.mainArea, "Filter")
self.filterLineEdit = QLineEdit(
textChanged=self.filter
)
self.mainArea.layout().addWidget(self.filterLineEdit)
self.splitter = QSplitter(orientation=Qt.Vertical)
self.view = QTreeView(
sortingEnabled=True,
selectionMode=QTreeView.SingleSelection,
alternatingRowColors=True,
rootIsDecorated=False,
editTriggers=QTreeView.NoEditTriggers,
uniformRowHeights=True,
)
# the method doesn't exists yet, pylint: disable=unnecessary-lambda
self.view.doubleClicked.connect(lambda: self.unconditional_commit())
box = gui.widgetBox(self.splitter, "Description", addToLayout=False)
self.descriptionlabel = QLabel(
wordWrap=True,
textFormat=Qt.RichText,
)
self.descriptionlabel = QTextBrowser(
openExternalLinks=True,
textInteractionFlags=(Qt.TextSelectableByMouse |
Qt.LinksAccessibleByMouse)
)
self.descriptionlabel.setFrameStyle(QTextBrowser.NoFrame)
# no (white) text background
self.descriptionlabel.viewport().setAutoFillBackground(False)
box.layout().addWidget(self.descriptionlabel)
self.splitter.addWidget(self.view)
self.splitter.addWidget(box)
self.splitter.setSizes([300, 200])
self.splitter.splitterMoved.connect(
lambda:
setattr(self, "splitter_state", bytes(self.splitter.saveState()))
)
self.mainArea.layout().addWidget(self.splitter)
self.controlArea.layout().addStretch(10)
gui.auto_commit(self.controlArea, self, "auto_commit", "Send Data")
proxy = QSortFilterProxyModel()
proxy.setFilterKeyColumn(-1)
proxy.setFilterCaseSensitivity(False)
self.view.setModel(proxy)
if self.splitter_state:
self.splitter.restoreState(self.splitter_state)
self.assign_delegates()
self.setBlocking(True)
self.setStatusMessage("Initializing")
self._executor = ThreadPoolExecutor(max_workers=1)
f = self._executor.submit(self.list_remote)
w = FutureWatcher(f, parent=self)
w.done.connect(self.__set_index)
def assign_delegates(self):
# NOTE: All columns must have size hinting delegates.
# QTreeView queries only the columns displayed in the viewport so
# the layout would be different depending in the horizontal scroll
# position
self.view.setItemDelegate(UniformHeightDelegate(self))
self.view.setItemDelegateForColumn(
self.Header.islocal,
UniformHeightIndicatorDelegate(self, role=Qt.DisplayRole)
)
self.view.setItemDelegateForColumn(
self.Header.size,
SizeDelegate(self)
)
self.view.setItemDelegateForColumn(
self.Header.instances,
NumericalDelegate(self)
)
self.view.setItemDelegateForColumn(
self.Header.variables,
NumericalDelegate(self)
)
self.view.resizeColumnToContents(self.Header.islocal)
def _parse_info(self, file_path):
if file_path in self.allinfo_remote:
info = self.allinfo_remote[file_path]
else:
info = self.allinfo_local[file_path]
islocal = file_path in self.allinfo_local
isremote = file_path in self.allinfo_remote
outdated = islocal and isremote and (
self.allinfo_remote[file_path].get('version', '')
!= self.allinfo_local[file_path].get('version', '')
)
islocal &= not outdated
prefix = os.path.join('', *file_path[:-1])
filename = file_path[-1]
return Namespace(file_path=file_path, prefix=prefix, filename=filename,
islocal=islocal, outdated=outdated, **info)
def create_model(self):
allkeys = set(self.allinfo_local) | set(self.allinfo_remote)
allkeys = sorted(allkeys)
model = QStandardItemModel(self)
model.setHorizontalHeaderLabels(self._header_labels)
current_index = -1
for i, file_path in enumerate(allkeys):
datainfo = self._parse_info(file_path)
item1 = QStandardItem()
item1.setData(" " if datainfo.islocal else "", Qt.DisplayRole)
item1.setData(datainfo, Qt.UserRole)
item2 = QStandardItem(datainfo.title)
item3 = QStandardItem()
item3.setData(datainfo.size, Qt.DisplayRole)
item4 = QStandardItem()
item4.setData(datainfo.instances, Qt.DisplayRole)
item5 = QStandardItem()
item5.setData(datainfo.variables, Qt.DisplayRole)
item6 = QStandardItem()
item6.setData(datainfo.target, Qt.DisplayRole)
if datainfo.target:
item6.setIcon(variable_icon(datainfo.target))
item7 = QStandardItem()
item7.setData(", ".join(datainfo.tags) if datainfo.tags else "",
Qt.DisplayRole)
row = [item1, item2, item3, item4, item5, item6, item7]
model.appendRow(row)
if os.path.join(*file_path) == self.selected_id:
current_index = i
return model, current_index
@Slot(object)
def __set_index(self, f):
# type: (Future) -> None
# set results from `list_remote` query.
assert QThread.currentThread() is self.thread()
assert f.done()
self.setBlocking(False)
self.setStatusMessage("")
self.allinfo_local = self.list_local()
try:
self.allinfo_remote = f.result()
except Exception: # anytying can happen, pylint: disable=broad-except
log.exception("Error while fetching updated index")
if not self.allinfo_local:
self.Error.no_remote_datasets()
else:
self.Warning.only_local_datasets()
self.allinfo_remote = {}
model, current_index = self.create_model()
self.view.model().setSourceModel(model)
self.view.selectionModel().selectionChanged.connect(
self.__on_selection
)
self.view.resizeColumnToContents(0)
self.view.setColumnWidth(
1, min(self.view.sizeHintForColumn(1),
self.view.fontMetrics().width("X" * 24)))
header = self.view.header()
header.restoreState(self.header_state)
# Update the info text
self.infolabel.setText(
format_info(model.rowCount(), len(self.allinfo_local)))
if current_index != -1:
selmodel = self.view.selectionModel()
selmodel.select(
self.view.model().mapFromSource(model.index(current_index, 0)),
QItemSelectionModel.ClearAndSelect | QItemSelectionModel.Rows)
def __update_cached_state(self):
model = self.view.model().sourceModel()
localinfo = self.list_local()
assert isinstance(model, QStandardItemModel)
allinfo = []
for i in range(model.rowCount()):
item = model.item(i, 0)
info = item.data(Qt.UserRole)
info.islocal = info.file_path in localinfo
item.setData(" " if info.islocal else "", Qt.DisplayRole)
allinfo.append(info)
self.infolabel.setText(format_info(
model.rowCount(), sum(info.islocal for info in allinfo)))
def selected_dataset(self):
"""
Return the current selected dataset info or None if not selected
Returns
-------
info : Optional[Namespace]
"""
rows = self.view.selectionModel().selectedRows(0)
assert 0 <= len(rows) <= 1
current = rows[0] if rows else None # type: Optional[QModelIndex]
if current is not None:
info = current.data(Qt.UserRole)
assert isinstance(info, Namespace)
else:
info = None
return info
def filter(self):
filter_string = self.filterLineEdit.text().strip()
proxyModel = self.view.model()
if proxyModel:
proxyModel.setFilterFixedString(filter_string)
def __on_selection(self):
# Main datasets view selection has changed
rows = self.view.selectionModel().selectedRows(0)
assert 0 <= len(rows) <= 1
current = rows[0] if rows else None # type: Optional[QModelIndex]
if current is not None:
current = self.view.model().mapToSource(current)
di = current.data(Qt.UserRole)
text = description_html(di)
self.descriptionlabel.setText(text)
self.selected_id = os.path.join(di.prefix, di.filename)
else:
self.descriptionlabel.setText("")
self.selected_id = None
self.commit()
def commit(self):
"""
Commit a dataset to the output immediately (if available locally) or
schedule download background and an eventual send.
During the download the widget is in blocking state
(OWWidget.isBlocking)
"""
di = self.selected_dataset()
if di is not None:
self.Error.clear()
if self.__awaiting_state is not None:
# disconnect from the __commit_complete
self.__awaiting_state.watcher.done.disconnect(
self.__commit_complete)
# .. and connect to update_cached_state
# self.__awaiting_state.watcher.done.connect(
# self.__update_cached_state)
# TODO: There are possible pending __progress_advance queued
self.__awaiting_state.pb.advance.disconnect(
self.__progress_advance)
self.progressBarFinished(processEvents=None)
self.__awaiting_state = None
if not di.islocal:
pr = progress()
callback = lambda pr=pr: pr.advance.emit()
pr.advance.connect(self.__progress_advance, Qt.QueuedConnection)
self.progressBarInit(processEvents=None)
self.setStatusMessage("Fetching...")
self.setBlocking(True)
f = self._executor.submit(
ensure_local, self.INDEX_URL, di.file_path,
self.local_cache_path, force=di.outdated,
progress_advance=callback)
w = FutureWatcher(f, parent=self)
w.done.connect(self.__commit_complete)
self.__awaiting_state = _FetchState(f, w, pr)
else:
self.setStatusMessage("")
self.setBlocking(False)
self.commit_cached(di.file_path)
else:
self.Outputs.data.send(None)
@Slot(object)
def __commit_complete(self, f):
# complete the commit operation after the required file has been
# downloaded
assert QThread.currentThread() is self.thread()
assert self.__awaiting_state is not None
assert self.__awaiting_state.future is f
if self.isBlocking():
self.progressBarFinished(processEvents=None)
self.setBlocking(False)
self.setStatusMessage("")
self.__awaiting_state = None
try:
path = f.result()
# anything can happen here, pylint: disable=broad-except
except Exception as ex:
log.exception("Error:")
self.error(format_exception(ex))
path = None
self.__update_cached_state()
if path is not None:
data = self.load_data(path)
else:
data = None
self.Outputs.data.send(data)
def commit_cached(self, file_path):
path = LocalFiles(self.local_cache_path).localpath(*file_path)
self.Outputs.data.send(self.load_data(path))
@Slot()
def __progress_advance(self):
assert QThread.currentThread() is self.thread()
self.progressBarAdvance(1, processEvents=None)
def onDeleteWidget(self):
super().onDeleteWidget()
if self.__awaiting_state is not None:
self.__awaiting_state.watcher.done.disconnect(self.__commit_complete)
self.__awaiting_state.pb.advance.disconnect(self.__progress_advance)
self.__awaiting_state = None
@staticmethod
def sizeHint():
return QSize(900, 600)
def closeEvent(self, event):
self.splitter_state = bytes(self.splitter.saveState())
self.header_state = bytes(self.view.header().saveState())
super().closeEvent(event)
def load_data(self, path): # pylint: disable=no-self-use
return Orange.data.Table(path)
def list_remote(self):
# type: () -> Dict[Tuple[str, ...], dict]
client = ServerFiles(server=self.INDEX_URL)
return client.allinfo()
def list_local(self):
# type: () -> Dict[Tuple[str, ...], dict]
return LocalFiles(self.local_cache_path).allinfo()
class OWMarkerGenes(widget.OWWidget):
name = "Marker Genes"
icon = 'icons/OWMarkerGenes.svg'
priority = 130
replaces = ['orangecontrib.single_cell.widgets.owmarkergenes.OWMarkerGenes']
class Warning(widget.OWWidget.Warning):
using_local_files = widget.Msg("Can't connect to serverfiles. Using cached files.")
class Outputs:
genes = widget.Output("Genes", Table)
want_main_area = True
want_control_area = True
auto_commit = Setting(True)
selected_source = Setting("")
selected_organism = Setting("")
selected_root_attribute = Setting(0)
settingsHandler = MarkerGroupContextHandler() # noqa: N815
selected_genes = settings.ContextSetting([])
settings_version = 2
_data = None
_available_sources = None
def __init__(self) -> None:
super().__init__()
# define the layout
main_area = QWidget(self.mainArea)
self.mainArea.layout().addWidget(main_area)
layout = QGridLayout()
main_area.setLayout(layout)
layout.setContentsMargins(4, 4, 4, 4)
# filter line edit
self.filter_line_edit = QLineEdit()
self.filter_line_edit.setPlaceholderText("Filter marker genes")
layout.addWidget(self.filter_line_edit, 0, 0, 1, 3)
# define available markers view
self.available_markers_view = TreeView()
box = gui.vBox(self.mainArea, "Available markers", addToLayout=False)
box.layout().addWidget(self.available_markers_view)
layout.addWidget(box, 1, 0, 2, 1)
# create selected markers view
self.selected_markers_view = TreeView()
box = gui.vBox(self.mainArea, "Selected markers", addToLayout=False)
box.layout().addWidget(self.selected_markers_view)
layout.addWidget(box, 1, 2, 2, 1)
self.available_markers_view.otherView = self.selected_markers_view
self.selected_markers_view.otherView = self.available_markers_view
# buttons
box = gui.vBox(self.mainArea, addToLayout=False, margin=0)
layout.addWidget(box, 1, 1, 1, 1)
self.move_button = gui.button(box, self, ">", callback=self._move_selected)
self._init_description_area(layout)
self._init_control_area()
self._load_data()
def _init_description_area(self, layout: QLayout) -> None:
"""
Function define an info area with description of the genes and add it to the layout.
"""
box = gui.widgetBox(self.mainArea, "Description", addToLayout=False)
self.descriptionlabel = QTextBrowser(
openExternalLinks=True, textInteractionFlags=(Qt.TextSelectableByMouse | Qt.LinksAccessibleByMouse)
)
box.setMaximumHeight(self.descriptionlabel.fontMetrics().height() * (NUM_LINES_TEXT + 3))
# description filed
self.descriptionlabel.setText("Select a gene to see information.")
self.descriptionlabel.setFrameStyle(QTextBrowser.NoFrame)
# no (white) text background
self.descriptionlabel.viewport().setAutoFillBackground(False)
box.layout().addWidget(self.descriptionlabel)
layout.addWidget(box, 3, 0, 1, 3)
def _init_control_area(self) -> None:
"""
Function defines dropdowns and the button in the control area.
"""
box = gui.widgetBox(self.controlArea, 'Database', margin=0)
self.source_index = -1
self.db_source_cb = gui.comboBox(box, self, 'source_index')
self.db_source_cb.activated[int].connect(self._set_db_source_index)
box = gui.widgetBox(self.controlArea, 'Organism', margin=0)
self.organism_index = -1
self.group_cb = gui.comboBox(box, self, 'organism_index')
self.group_cb.activated[int].connect(self._set_group_index)
box = gui.widgetBox(self.controlArea, 'Group by', margin=0)
self.group_by_cb = gui.comboBox(
box, self, 'selected_root_attribute', items=GROUP_BY_ITEMS, callback=self._setup
)
gui.rubber(self.controlArea)
gui.auto_commit(self.controlArea, self, "auto_commit", "Commit")
def sizeHint(self):
return super().sizeHint().expandedTo(QSize(900, 500))
@property
def available_sources(self) -> dict:
return self._available_sources
@available_sources.setter
def available_sources(self, value: dict) -> None:
"""
Set _available_sources variable, add them to dropdown, and select the source that was previously.
"""
self._available_sources = value
items = sorted(list(value.keys()), reverse=True) # panglao first
try:
idx = items.index(self.selected_source)
except ValueError:
idx = -1
self.db_source_cb.clear()
self.db_source_cb.addItems(items)
if idx != -1:
self.source_index = idx
self.selected_source = items[idx]
elif items:
self.source_index = min(max(self.source_index, 0), len(items) - 1)
self._set_db_source_index(self.source_index)
@property
def data(self) -> Table:
return self._data
@data.setter
def data(self, value: Table):
"""
Set the source data. The data is then filtered on the first meta column (group).
Select set dropdown with the groups and select the one that was selected previously.
"""
self._data = value
domain = value.domain
if domain.metas:
group = domain.metas[0]
groupcol, _ = value.get_column_view(group)
if group.is_string:
group_values = list(set(groupcol))
elif group.is_discrete:
group_values = group.values
else:
raise TypeError("Invalid column type")
group_values = sorted(group_values) # human first
try:
idx = group_values.index(self.selected_organism)
except ValueError:
idx = -1
self.group_cb.clear()
self.group_cb.addItems(group_values)
if idx != -1:
self.organism_index = idx
self.selected_organism = group_values[idx]
elif group_values:
self.organism_index = min(max(self.organism_index, 0), len(group_values) - 1)
self._set_group_index(self.organism_index)
def _load_data(self) -> None:
"""
Collect available data sources (marker genes data sets).
"""
self.Warning.using_local_files.clear()
found_sources = {}
try:
found_sources.update(serverfiles.ServerFiles().allinfo(SERVER_FILES_DOMAIN))
except requests.exceptions.ConnectionError:
found_sources.update(serverfiles.allinfo(SERVER_FILES_DOMAIN))
self.Warning.using_local_files()
self.available_sources = {item.get('title').split(': ')[-1]: item for item in found_sources.values()}
def _source_changed(self) -> None:
"""
Respond on change of the source and download the data.
"""
if self.available_sources:
file_name = self.available_sources[self.selected_source]['filename']
try:
serverfiles.update(SERVER_FILES_DOMAIN, file_name)
except requests.exceptions.ConnectionError:
# try to update file. Ignore network errors.
pass
try:
file_path = serverfiles.localpath_download(SERVER_FILES_DOMAIN, file_name)
except requests.exceptions.ConnectionError as err:
# Unexpected error.
raise err
self.data = Table.from_file(file_path)
def _setup(self) -> None:
"""
Setup the views with data.
"""
self.closeContext()
self.selected_genes = []
self.openContext((self.selected_organism, self.selected_source))
data_not_selected, data_selected = self._filter_data_group(self.data)
# add model to available markers view
group_by = GROUP_BY_ITEMS[self.selected_root_attribute]
tree_model = TreeModel(data_not_selected, group_by)
proxy_model = FilterProxyModel(self.filter_line_edit)
proxy_model.setSourceModel(tree_model)
self.available_markers_view.setModel(proxy_model)
self.available_markers_view.selectionModel().selectionChanged.connect(
partial(self._on_selection_changed, self.available_markers_view)
)
tree_model = TreeModel(data_selected, group_by)
proxy_model = FilterProxyModel(self.filter_line_edit)
proxy_model.setSourceModel(tree_model)
self.selected_markers_view.setModel(proxy_model)
self.selected_markers_view.selectionModel().selectionChanged.connect(
partial(self._on_selection_changed, self.selected_markers_view)
)
self.selected_markers_view.model().sourceModel().data_added.connect(self._selected_markers_changed)
self.selected_markers_view.model().sourceModel().data_removed.connect(self._selected_markers_changed)
# update output and messages
self._selected_markers_changed()
def _filter_data_group(self, data: Table) -> Tuple[Table, Tuple]:
"""
Function filter the table based on the selected group (Mouse, Human) and divide them in two groups based on
selected_data variable.
Parameters
----------
data
Table to be filtered
Returns
-------
data_not_selected
Data that will initially be in available markers view.
data_selected
Data that will initially be in selected markers view.
"""
group = data.domain.metas[0]
gvec = data.get_column_view(group)[0]
if group.is_string:
mask = gvec == self.selected_organism
else:
mask = gvec == self.organism_index
data = data[mask]
# divide data based on selected_genes variable (context)
unique_gene_names = np.core.defchararray.add(
data.get_column_view("Entrez ID")[0].astype(str), data.get_column_view("Cell Type")[0].astype(str)
)
mask = np.isin(unique_gene_names, self.selected_genes)
data_not_selected = data[~mask]
data_selected = data[mask]
return data_not_selected, data_selected
def commit(self) -> None:
rows = self.selected_markers_view.model().sourceModel().rootItem.get_data_rows()
if len(rows) > 0:
metas = [r.metas for r in rows]
data = Table.from_numpy(self.data.domain, np.empty((len(metas), 0)), metas=np.array(metas))
# always false for marker genes data tables in single cell
data.attributes[GENE_AS_ATTRIBUTE_NAME] = False
# set taxonomy id in data.attributes
data.attributes[TAX_ID] = MAP_GROUP_TO_TAX_ID.get(self.selected_organism, '')
# set column id flag
data.attributes[GENE_ID_COLUMN] = "Entrez ID"
data.name = 'Marker Genes'
else:
data = None
self.Outputs.genes.send(data)
def _update_description(self, view: TreeView) -> None:
"""
Upate the description about the gene. Only in case when one gene is selected.
"""
selection = self._selected_rows(view)
qmodel = view.model().sourceModel()
if len(selection) > 1 or len(selection) == 0 or qmodel.node_from_index(selection[0]).data_row is None:
self.descriptionlabel.setText("Select a gene to see information.")
else:
data_row = qmodel.node_from_index(selection[0]).data_row
self.descriptionlabel.setHtml(
f"<b>Gene name:</b> {data_row['Name']}<br/>"
f"<b>Entrez ID:</b> {data_row['Entrez ID']}<br/>"
f"<b>Cell Type:</b> {data_row['Cell Type']}<br/>"
f"<b>Function:</b> {data_row['Function']}<br/>"
f"<b>Reference:</b> <a href='{data_row['URL']}'>{data_row['Reference']}</a>"
)
def _update_data_info(self) -> None:
"""
Updates output info in the control area.
"""
sel_model = self.selected_markers_view.model().sourceModel()
self.info.set_output_summary(f"Selected: {str(len(sel_model))}")
# callback functions
def _selected_markers_changed(self) -> None:
"""
This function is called when markers in the selected view are added or removed.
"""
rows = self.selected_markers_view.model().sourceModel().rootItem.get_data_rows()
self.selected_genes = [row["Entrez ID"].value + row["Cell Type"].value for row in rows]
self._update_data_info()
self.commit()
def _on_selection_changed(self, view: TreeView) -> None:
"""
When selection in one of the view changes in a view button should change a sign in the correct direction and
other view should reset the selection. Also gene description is updated.
"""
self.move_button.setText(">" if view is self.available_markers_view else "<")
if view is self.available_markers_view:
self.selected_markers_view.clearSelection()
else:
self.available_markers_view.clearSelection()
self._update_description(view)
def _set_db_source_index(self, source_index: int) -> None:
"""
Set the index of selected database source - index in a dropdown.
"""
self.source_index = source_index
self.selected_source = self.db_source_cb.itemText(source_index)
self._source_changed()
def _set_group_index(self, group_index: int) -> None:
"""
Set the index of organism - index in a dropdown.
"""
self.organism_index = group_index
self.selected_organism = self.group_cb.itemText(group_index)
self._setup()
def _move_selected(self) -> None:
"""
Move selected genes when button clicked.
"""
if self._selected_rows(self.selected_markers_view):
self._move_selected_from_to(self.selected_markers_view, self.available_markers_view)
elif self._selected_rows(self.available_markers_view):
self._move_selected_from_to(self.available_markers_view, self.selected_markers_view)
# support functions for callbacks
def _move_selected_from_to(self, src: TreeView, dst: TreeView) -> None:
"""
Function moves items from src model to dst model.
"""
selected_items = self._selected_rows(src)
src_model = src.model().sourceModel()
dst_model = dst.model().sourceModel()
# move data as mimeData from source to destination tree view
mime_data = src_model.mimeData(selected_items)
# remove nodes from the source view
src_model.remove_node_list(selected_items)
dst_model.dropMimeData(mime_data, Qt.MoveAction, -1, -1)
@staticmethod
def _selected_rows(view: TreeView) -> List[QModelIndex]:
"""
Return the selected rows in the view.
"""
rows = view.selectionModel().selectedRows()
return list(map(view.model().mapToSource, rows))
@classmethod
def migrate_settings(cls, settings, version=0):
def migrate_to_version_2():
settings["selected_source"] = settings.pop("selected_db_source", "")
settings["selected_organism"] = settings.pop("selected_group", "")
if "context_settings" in settings:
for co in settings["context_settings"]:
co.values["selected_genes"] = [g[0] + g[1] for g in co.values["selected_genes"]]
if version < 2:
migrate_to_version_2()
class OWBatchImport(widget.OWWidget):
name = '批量导入'
description = "数据批量导入"
icon = 'icons/batchimport.svg'
priority = 90
# 定义输出信号
class Outputs:
data = Output("Data", Orange.data.Table, doc="Table",
default=True) #输出Orange Table格式的数据
dataFrame = Output("Data Frame", pd.DataFrame,
doc="DataFrame") #输出Pandas DataFrame格式的数据
# 不绘制内容区域
want_main_area = False
def __init__(self):
grid = QGridLayout()
self.dir_label = QLabel("目录:", self)
self.browse_button = QPushButton(
"…",
icon=self.style().standardIcon(QStyle.SP_DirOpenIcon),
toolTip="Browse filesystem",
autoDefault=False,
)
self.browse_button.clicked.connect(self.browse)
grid.addWidget(self.dir_label, 0, 1, 1, 1)
grid.addWidget(self.browse_button, 0, 2, 1, 1)
self.controlArea.layout().addLayout(grid)
box = gui.widgetBox(self.controlArea, "Info", addSpace=False)
self.summary_text = QTextBrowser(
verticalScrollBarPolicy=Qt.ScrollBarAsNeeded,
readOnly=True,
)
self.summary_text.viewport().setBackgroundRole(QPalette.NoRole)
self.summary_text.setFrameStyle(QTextBrowser.NoFrame)
self.summary_text.setMinimumHeight(self.fontMetrics().ascent() * 2 + 4)
self.summary_text.viewport().setAutoFillBackground(False)
box.layout().addWidget(self.summary_text)
@Slot()
def browse(self, prefixname=None, directory=None):
"""
Open a file dialog and select a user specified file.
"""
dir_path = QFileDialog.getExistingDirectory(self, "选择目录", "~/map")
self.dir_label.setText(dir_path)
# 将指定目录中的csv文件集合导入并转为pandas的dataframe对象
df = self._get_data(dir_path)
self.summary_text.setText("共载入{}条记录。".format(df.shape[0]))
# 向数据通道发送数据
self.Outputs.dataFrame.send(df)
self.Outputs.data.send(pandas_to_table(df))
def _get_data(self, dir_path):
filecsv_list = []
for root, dirs, files in os.walk(dir_path):
for file in files:
if os.path.splitext(file)[1] == '.csv':
filecsv_list.append(os.path.join(root, file))
data = pd.DataFrame()
for csv in filecsv_list:
df_tmp = pd.read_csv(csv, header=0, encoding='utf-8')
data = data.append(df_tmp, ignore_index=True)
return data
