def _init_main_objects(self, args):
self._main_window = MainWindow(args)
self._core = BAONQtCore(args)
self._core.moveToThread(self._core_thread)
class BAONQtApplication(QApplication):
BACKUP_DIALOG_CAPTION = 'Rename Plan Backup Detected'
BACKUP_DIALOG_ERROR_CAPTION = 'Error'
BACKUP_INTRO_TEXT = 'BAON has detected a backed up rename plan from a previous run of the '\
'application. This suggests that the application crashed partway through executing a rename operation. The '\
'files may have been left in an inconsistent state.'
BACKUP_PROMPT_TEXT = 'What do you want to do?'
REVERT_BACKUP_PROGRESS_TEXT = 'Reverting the rename operation'
SUCCESS_DIALOG_CAPTION = 'Success'
WARNING_DIALOG_CAPTION = 'Warning'
BACKUP_DELETED_DIALOG_TEXT =\
'The backed up plan has been deleted. Further runs of the application will proceed normally.'
BACKUP_REVERTED_SUCCESS_DIALOG_TEXT = 'The rename operation has been reverted successfully. The directory state '\
'should now have been completely restored.'
BACKUP_REVERTED_WARNING_DIALOG_TEXT = 'There were inconsistencies while trying to revert the previous rename '\
'operation. The directory state may not have been fully restored.'
REVERT_BACKUP_BUTTON_TEXT = 'Revert the rename (recommended)'
DELETE_BACKUP_BUTTON_TEXT = 'Delete the backup file'
EXAMINE_BACKUP_BUTTON_TEXT = 'Examine the plan in a text editor'
QUIT_BUTTON_TEXT = 'Quit BAON'
request_revert_backup = pyqtSignal()
request_delete_backup = pyqtSignal()
_main_window = None
_core = None
_progress_dialog = None
_core_thread = None
def __init__(self, args):
super().__init__(sys.argv)
# Actually we do quit when the last window is closed, but we need to do this in a more controlled way
self.setQuitOnLastWindowClosed(False)
self._init_threads()
self._init_main_objects(args)
self._connect_main_objects()
self._start_core()
def event(self, evt):
if isinstance(evt, QFileOpenEvent):
path = evt.file()
if not os.path.isdir(path):
path, _ = os.path.split(path)
self._main_window.set_base_path(path)
return True
return super().event(evt)
def _init_threads(self):
self._core_thread = QThread()
self._core_thread.start()
def _init_main_objects(self, args):
self._main_window = MainWindow(args)
self._core = BAONQtCore(args)
self._core.moveToThread(self._core_thread)
def _connect_main_objects(self):
self.aboutToQuit.connect(self._on_quit)
# Core vs. application
self._core.request_backup_decision.connect(self.backup_decision_requested)
self._core.reverted_backup.connect(self.notify_backup_reverted)
self._core.revert_backup_error.connect(self.handle_backup_op_error)
self._core.deleted_backup.connect(self.notify_backup_deleted)
self._core.delete_backup_error.connect(self.handle_backup_op_error)
self.request_revert_backup.connect(self._core.revert_backup)
self.request_delete_backup.connect(self._core.delete_backup)
# Core vs. main window
self._core.prologue_finished.connect(self._main_window.show_first_time)
self._core.status_changed.connect(self._main_window.report_status)
self._core.scanned_files_updated.connect(self._main_window.update_scanned_files)
self._core.renamed_files_updated.connect(self._main_window.update_renamed_files)
self._core.has_shutdown.connect(self.quit)
self._main_window.base_path_edited.connect(self._core.update_base_path)
self._main_window.scan_recursive_changed.connect(self._core.update_scan_recursive)
self._main_window.rules_text_changed.connect(self._core.update_rules_text)
self._main_window.use_path_changed.connect(self._core.update_use_path)
self._main_window.use_extension_changed.connect(self._core.update_use_extension)
self._main_window.request_add_override.connect(self._core.add_override)
self._main_window.request_remove_override.connect(self._core.remove_override)
self._main_window.request_do_rename.connect(self._core.do_rename)
self._main_window.request_rescan.connect(self._core.rescan)
self._main_window.rejected.connect(self._core.shutdown)
def _start_core(self):
QMetaObject.invokeMethod(self._core, 'start', Qt.QueuedConnection)
def _on_quit(self):
self._core_thread.quit()
self._core_thread.wait()
@pyqtSlot()
def backup_decision_requested(self):
self._show_backup_decision()
@pyqtSlot(Exception)
def handle_backup_op_error(self, error):
self._close_progress_dialog()
self._show_backup_decision(error=error)
@pyqtSlot()
def notify_backup_deleted(self):
QMessageBox.information(
None,
self.SUCCESS_DIALOG_CAPTION,
self.BACKUP_DELETED_DIALOG_TEXT,
)
@pyqtSlot(bool)
def notify_backup_reverted(self, complete_success):
self._close_progress_dialog()
if complete_success:
QMessageBox.information(
None,
self.SUCCESS_DIALOG_CAPTION,
self.BACKUP_REVERTED_SUCCESS_DIALOG_TEXT,
)
else:
QMessageBox.warning(
None,
self.WARNING_DIALOG_CAPTION,
self.BACKUP_REVERTED_WARNING_DIALOG_TEXT,
)
def _show_backup_decision(self, error=None):
text = '<p>{0}</p><p>{1}</p>'.format(
self.BACKUP_INTRO_TEXT if error is None else error,
self.BACKUP_PROMPT_TEXT,
)
dialog = QMessageBox(
QMessageBox.Question if error is None else QMessageBox.Critical,
self.BACKUP_DIALOG_CAPTION if error is None else self.BACKUP_DIALOG_ERROR_CAPTION,
text,
)
revert_button = dialog.addButton(self.REVERT_BACKUP_BUTTON_TEXT, QMessageBox.AcceptRole)
delete_button = dialog.addButton(self.DELETE_BACKUP_BUTTON_TEXT, QMessageBox.DestructiveRole)
examine_button = dialog.addButton(self.EXAMINE_BACKUP_BUTTON_TEXT, QMessageBox.ActionRole)
dialog.addButton(self.QUIT_BUTTON_TEXT, QMessageBox.RejectRole)
dialog.exec()
clicked_button = dialog.clickedButton()
if clicked_button == examine_button:
QMetaObject.invokeMethod(self, '_examine_backup', Qt.QueuedConnection)
elif clicked_button == revert_button:
self._progress_dialog = QProgressDialog(None)
self._progress_dialog.setLabelText(self.REVERT_BACKUP_PROGRESS_TEXT)
self._progress_dialog.setCancelButton(None)
self._progress_dialog.setRange(0, 0)
self._progress_dialog.forceShow()
self.request_revert_backup.emit()
elif clicked_button == delete_button:
self.request_delete_backup.emit()
else:
self.quit()
@pyqtSlot()
def _examine_backup(self):
error = None
try:
filename = get_rename_plan_backup_filename()
QDesktopServices.openUrl(QUrl.fromLocalFile(filename))
except Exception as err:
error = err
finally:
self._show_backup_decision(error)
def _close_progress_dialog(self):
if self._progress_dialog is not None:
self._progress_dialog.close()
self._progress_dialog = None