def on_action_hovered(self, action):
"""
Fetch song.artists when artists_action is hovered. If it is
already fetched, ignore.
"""
data = action.data()
if data is None: # submenu action
return
def artists_fetched_cb(future):
self._fetching_artists = False
artists = future.result() # ignore the potential exception
if artists:
for artist in artists:
artist_action = action.menu().addAction(artist.name)
# create a closure to bind variable artist
artist_action.triggered.connect(
(lambda x: lambda: self._app.browser.goto(model=x)
)(artist))
data['artists'] = artists or []
action.setData(data)
# the action is artists_action
if 'artists' in data:
# artists value has not been fetched
if data['artists'] is None and self._fetching_artists is False:
logger.debug('fetch song.artists for actions')
song = data['song']
self._fetching_artists = True
task = aio.run_in_executor(None, lambda: song.artists)
task.add_done_callback(artists_fetched_cb)
async def a_search(self,
keyword,
source_in=None,
timeout=None,
type_in=None,
**kwargs):
"""async version of search
TODO: add Happy Eyeballs requesting strategy if needed
"""
type_in = SearchType.batch_parse(type_in) if type_in else [
SearchType.so
]
fs = [] # future list
for provider in self._filter(identifier_in=source_in):
for type_ in type_in:
future = aio.run_in_executor(
None, partial(provider.search, keyword, type_=type_))
fs.append(future)
results = []
# TODO: use async generator when we only support Python 3.6 or above
for future in aio.as_completed(fs, timeout=timeout):
try:
result = await future
except Exception as e:
logger.exception(str(e))
else:
if result is not None:
results.append(result)
return results
def on_song_changed(self, song):
"""bind song changed signal with this"""
if song is None:
self._set_lyric(None)
return
def cb(future):
try:
lyric = future.result()
except: # noqa
logger.exception('get lyric failed')
lyric = None
self._set_lyric(lyric)
# TODO: use app.task_mgr instead
future = aio.run_in_executor(None, lambda: song.lyric)
future.add_done_callback(cb)
async def a_search(self, keyword, source_in=None, timeout=None, **kwargs):
"""async version of search
TODO: add Happy Eyeballs requesting strategy if needed
"""
fs = [] # future list
for provider in self._filter(identifier_in=source_in):
future = aio.run_in_executor(None, provider.search, keyword)
fs.append(future)
result = []
# TODO: use async generator when we only support Python 3.6 or above
for future in aio.as_completed(fs, timeout=timeout):
try:
result.append(await future)
except Exception as e:
logger.exception(str(e))
return result