class OWDatabasesUpdate(OWWidget):
name = "Databases Update"
description = "Update local systems biology databases."
icon = "../widgets/icons/OWDatabasesUpdate.svg"
priority = 1
inputs = []
outputs = []
want_main_area = False
def __init__(self,
parent=None,
signalManager=None,
name="Databases update"):
OWWidget.__init__(self,
parent,
signalManager,
name,
wantMainArea=False)
self.searchString = ""
fbox = gui.widgetBox(self.controlArea, "Filter")
self.completer = TokenListCompleter(self,
caseSensitivity=Qt.CaseInsensitive)
self.lineEditFilter = QLineEdit(textChanged=self.search_update)
self.lineEditFilter.setCompleter(self.completer)
fbox.layout().addWidget(self.lineEditFilter)
box = gui.widgetBox(self.controlArea, "Files")
self.filesView = QTreeWidget(self)
self.filesView.setHeaderLabels(header_labels)
self.filesView.setRootIsDecorated(False)
self.filesView.setUniformRowHeights(True)
self.filesView.setSelectionMode(QAbstractItemView.NoSelection)
self.filesView.setSortingEnabled(True)
self.filesView.sortItems(header.Title, Qt.AscendingOrder)
self.filesView.setItemDelegateForColumn(
0, UpdateOptionsItemDelegate(self.filesView))
self.filesView.model().layoutChanged.connect(self.search_update)
box.layout().addWidget(self.filesView)
layout = QHBoxLayout()
gui.widgetBox(self.controlArea, margin=0, orientation=layout)
self.updateButton = gui.button(
box,
self,
"Update all",
callback=self.update_all,
tooltip="Update all updatable files",
)
self.downloadButton = gui.button(
box,
self,
"Download all",
callback=self.download_filtered,
tooltip="Download all filtered files shown")
self.cancelButton = gui.button(
box,
self,
"Cancel",
callback=self.cancel_active_threads,
tooltip="Cancel scheduled downloads/updates.")
self.addButton = gui.button(box,
self,
"Add ...",
callback=self.__handle_dialog,
tooltip="Add files for personal use.")
layout.addWidget(self.updateButton)
layout.addWidget(self.downloadButton)
layout.addWidget(self.cancelButton)
layout.addStretch()
layout.addWidget(self.addButton)
# Enable retryButton once connection is established
# self.retryButton = gui.button(
# box, self, "Reconnect", callback=self.initialize_files_view
# )
# self.retryButton.hide()
self.resize(800, 600)
self.update_items = []
self._dialog = None
self.progress_bar = None
# threads
self.threadpool = QThreadPool(self)
#self.threadpool.setMaxThreadCount(1)
self.workers = list()
self.initialize_files_view()
def __handle_dialog(self):
if not self._dialog:
self._dialog = FileUploadHelper(self)
self._dialog.show()
def __progress_advance(self):
# GUI should be updated in main thread. That's why we are calling advance method here
if self.progress_bar:
self.progress_bar.advance()
def handle_worker_exception(self, ex):
self.progress_bar.finish()
self.setStatusMessage('')
if isinstance(ex, ConnectionError):
# TODO: set warning messages
pass
print(ex)
def initialize_files_view(self):
# self.retryButton.hide()
# clear view
self.filesView.clear()
# init progress bar
self.progress_bar = gui.ProgressBar(self, iterations=3)
# status message
self.setStatusMessage('initializing')
worker = Worker(evaluate_files_state, progress_callback=True)
worker.signals.progress.connect(self.__progress_advance)
worker.signals.result.connect(self.set_files_list)
worker.signals.error.connect(self.handle_worker_exception)
# move download process to worker thread
self.threadpool.start(worker)
self.setEnabled(False)
def __create_action_button(self, fs, retry=None):
if not fs.state not in [OUTDATED, USER_FILE] or not retry:
self.filesView.setItemWidget(fs.tree_item, header.Update, None)
button = QToolButton(None)
if not retry:
if fs.state == OUTDATED:
button.setText('Update')
button.clicked.connect(
partial(self.submit_download_task, fs.domain, fs.filename,
True))
elif fs.state == USER_FILE:
if not fs.info_server:
button.setText('Remove')
button.clicked.connect(
partial(self.submit_remove_task, fs.domain,
fs.filename))
else:
button.setText('Use server version')
button.clicked.connect(
partial(self.submit_download_task, fs.domain,
fs.filename, True))
else:
button.setText('Retry')
button.clicked.connect(
partial(self.submit_download_task, fs.domain, fs.filename,
True))
button.setMaximumWidth(120)
button.setMaximumHeight(20)
button.setMinimumHeight(20)
if sys.platform == "darwin":
button.setAttribute(Qt.WA_MacSmallSize)
self.filesView.setItemWidget(fs.tree_item, header.Update, button)
def set_files_list(self, result):
""" Set the files to show.
"""
assert threading.current_thread() == threading.main_thread()
self.progress_bar.finish()
self.setStatusMessage('')
self.setEnabled(True)
self.update_items = result
all_tags = set()
for fs in self.update_items:
fs.tree_item = FileStateItem(fs)
fs.download_option = DownloadOption(state=fs.state)
fs.download_option.download_clicked.connect(
partial(self.submit_download_task, fs.domain, fs.filename))
fs.download_option.remove_clicked.connect(
partial(self.submit_remove_task, fs.domain, fs.filename))
# add widget items to the QTreeWidget
self.filesView.addTopLevelItems(
[fs.tree_item for fs in self.update_items])
# add action widgets to tree items
for fs in self.update_items:
self.filesView.setItemWidget(fs.tree_item, header.Download,
fs.download_option)
if fs.state in [USER_FILE, OUTDATED]:
self.__create_action_button(fs)
all_tags.update(fs.tags)
self.filesView.setColumnWidth(
header.Download, self.filesView.sizeHintForColumn(header.Download))
for column in range(1, len(header_labels)):
self.filesView.resizeColumnToContents(column)
hints = [hint for hint in sorted(all_tags) if not hint.startswith("#")]
self.completer.setTokenList(hints)
self.search_update()
self.toggle_action_buttons()
self.cancelButton.setEnabled(False)
def toggle_action_buttons(self):
selected_items = [
fs for fs in self.update_items if not fs.tree_item.isHidden()
]
def button_check(sel_items, state, button):
for item in sel_items:
if item.state != state:
button.setEnabled(False)
else:
button.setEnabled(True)
break
button_check(selected_items, OUTDATED, self.updateButton)
button_check(selected_items, AVAILABLE, self.downloadButton)
def search_update(self, searchString=None):
strings = str(self.lineEditFilter.text()).split()
for fs in self.update_items:
hide = not all(UpdateItem_match(fs, string) for string in strings)
fs.tree_item.setHidden(hide)
self.toggle_action_buttons()
def update_all(self):
for fs in self.update_items:
if fs.state == OUTDATED and not fs.tree_item.isHidden():
self.submit_download_task(fs.domain, fs.filename)
def download_filtered(self):
for fs in self.update_items:
if not fs.tree_item.isHidden() and fs.state in [
AVAILABLE, OUTDATED
]:
self.submit_download_task(fs.domain, fs.filename, start=False)
self.run_download_tasks()
def submit_download_task(self, domain, filename, start=True):
""" Submit the (domain, filename) to be downloaded/updated.
"""
# get selected tree item
index = self.tree_item_index(domain, filename)
fs = self.update_items[index]
worker = Worker(download_server_file,
fs,
index,
progress_callback=True)
worker.signals.progress.connect(self.__progress_advance)
worker.signals.result.connect(self.on_download_finished)
worker.signals.error.connect(self.on_download_exception)
self.workers.append(worker)
if start:
self.run_download_tasks()
def run_download_tasks(self):
self.cancelButton.setEnabled(True)
# init progress bar
self.progress_bar = gui.ProgressBar(self,
iterations=len(self.workers) * 100)
# status message
self.setStatusMessage('downloading')
# move workers to threadpool
[self.threadpool.start(worker) for worker in self.workers]
self.filesView.setDisabled(True)
# reset list of workers
self.workers = list()
def on_download_exception(self, ex):
assert threading.current_thread() == threading.main_thread()
self.progress_bar.finish()
self.setStatusMessage('')
print(ex)
if isinstance(ex, ValueError):
fs, index = ex.args
# restore state and retry
fs.refresh_state()
fs.tree_item.update_data(fs)
fs.download_option.state = fs.state
self.__create_action_button(fs, retry=True)
def on_download_finished(self, result):
assert threading.current_thread() == threading.main_thread()
# We check if all workers have completed. If not, continue
if self.progress_bar.count == 100 or self.threadpool.activeThreadCount(
) == 0:
self.filesView.setDisabled(False)
self.progress_bar.finish()
self.setStatusMessage('')
fs, index = result
# re-evaluate File State
info = serverfiles.info(fs.domain, fs.filename)
fs.refresh_state(info_local=info, info_server=info)
# reinitialize treeWidgetItem
fs.tree_item.update_data(fs)
# reinitialize OptionWidget
fs.download_option.state = fs.state
self.filesView.setItemWidget(fs.tree_item, header.Update, None)
self.toggle_action_buttons()
for column in range(1, len(header_labels)):
self.filesView.resizeColumnToContents(column)
def submit_remove_task(self, domain, filename):
serverfiles.LOCALFILES.remove(domain, filename)
index = self.tree_item_index(domain, filename)
fs = self.update_items[index]
if fs.state == USER_FILE:
self.filesView.takeTopLevelItem(
self.filesView.indexOfTopLevelItem(fs.tree_item))
self.update_items.remove(fs)
# self.filesView.removeItemWidget(index)
else:
# refresh item state
fs.info_local = None
fs.refresh_state()
# reinitialize treeWidgetItem
fs.tree_item.update_data(fs)
# reinitialize OptionWidget
fs.download_option.state = fs.state
self.toggle_action_buttons()
def cancel_active_threads(self):
""" Cancel all pending update/download tasks (that have not yet started).
"""
if self.threadpool:
self.threadpool.clear()
def tree_item_index(self, domain, filename):
for i, fs in enumerate(self.update_items):
if fs.domain == domain and fs.filename == filename:
return i
raise ValueError("%r, %r not in update list" % (domain, filename))
def onDeleteWidget(self):
self.cancel_active_threads()
OWWidget.onDeleteWidget(self)
