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export in a background thread

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This commit is contained in:
Damien Elmes 2020-03-06 14:19:25 +10:00
parent 7986a79530
commit 53952ba131
1 changed files with 46 additions and 33 deletions
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79
qt/aqt/exporting.py
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@ -6,6 +6,7 @@ from __future__ import annotations
import os
import re
import time
from concurrent.futures import Future
from typing import List, Optional
import aqt
@ -131,7 +132,7 @@ class ExportDialog(QDialog):
break
self.hide()
if file:
self.mw.progress.start(immediate=True)
# check we can write to file
try:
f = open(file, "wb")
f.close()
@ -139,39 +140,51 @@ class ExportDialog(QDialog):
showWarning(_("Couldn't save file: %s") % str(e))
else:
os.unlink(file)
exportedMedia = lambda cnt: self.mw.progress.update(
label=ngettext(
"Exported %d media file", "Exported %d media files", cnt
# progress handler
def exported_media(cnt):
self.mw.taskman.run_on_main(
lambda: self.mw.progress.update(
label=ngettext(
"Exported %d media file", "Exported %d media files", cnt
)
% cnt
)
% cnt
)
hooks.media_files_did_export.append(exportedMedia)
def do_export():
self.exporter.exportInto(file)
hooks.media_files_did_export.remove(exportedMedia)
period = 3000
if self.isVerbatim:
msg = _("Collection exported.")
self.mw.reopen()
else:
if self.isTextNote:
msg = (
ngettext(
"%d note exported.",
"%d notes exported.",
self.exporter.count,
)
% self.exporter.count
)
else:
msg = (
ngettext(
"%d card exported.",
"%d cards exported.",
self.exporter.count,
)
% self.exporter.count
)
tooltip(msg, period=period)
finally:
def on_done(future: Future):
self.mw.progress.finish()
QDialog.accept(self)
hooks.media_files_did_export.remove(exported_media)
# raises if exporter failed
future.result()
self.on_export_finished()
self.mw.progress.start(immediate=True)
hooks.media_files_did_export.append(exported_media)
self.mw.taskman.run_in_background(do_export, on_done)
def on_export_finished(self):
if self.isVerbatim:
msg = _("Collection exported.")
self.mw.reopen()
else:
if self.isTextNote:
msg = (
ngettext(
"%d note exported.", "%d notes exported.", self.exporter.count,
)
% self.exporter.count
)
else:
msg = (
ngettext(
"%d card exported.", "%d cards exported.", self.exporter.count,
)
% self.exporter.count
)
tooltip(msg, period=3000)
QDialog.reject(self)