Display a message when no contracts exist
Tyler Goodlet
parent
0cffa4b97a
commit
4895690642
|
|
@ -37,6 +37,7 @@ class StrikeCell(HeaderCell):
|
||||||
_no_display = ['symbol', 'contract_type', 'strike', 'time', 'open']
|
_no_display = ['symbol', 'contract_type', 'strike', 'time', 'open']
|
||||||
_strike_row_cache = {}
|
_strike_row_cache = {}
|
||||||
_strike_cell_cache = {}
|
_strike_cell_cache = {}
|
||||||
|
_no_contracts_msg = "No contracts available for symbol"
|
||||||
|
|
||||||
|
|
||||||
class StrikeRow(BoxLayout):
|
class StrikeRow(BoxLayout):
|
||||||
|
|
@ -237,14 +238,22 @@ class OptionChain(object):
|
||||||
self._nursery = None
|
self._nursery = None
|
||||||
self._update_nursery = None
|
self._update_nursery = None
|
||||||
self.feed = feed
|
self.feed = feed
|
||||||
self._update_cs = None
|
|
||||||
self._quote_gen = None
|
self._quote_gen = None
|
||||||
# TODO: this should be moved down to the data feed layer
|
# TODO: this should be moved down to the data feed layer
|
||||||
# right now it's only needed for the UI uupdate loop to cancel itself
|
# right now it's only needed for the UI update loop to cancel itself
|
||||||
|
self._update_cs = None
|
||||||
self._first_quotes = None
|
self._first_quotes = None
|
||||||
self._last_expiry = None
|
self._last_expiry = None
|
||||||
# flag to determine if one-time widgets have been generated
|
# flag to determine if one-time widgets have been generated
|
||||||
self._static_widgets_initialized = False
|
self._static_widgets_initialized = False
|
||||||
|
self._no_opts_label = None
|
||||||
|
|
||||||
|
@property
|
||||||
|
def no_opts_label(self):
|
||||||
|
if self._no_opts_label is None:
|
||||||
|
label = self._no_opts_label = Label(text=_no_contracts_msg)
|
||||||
|
label.font_size = 30
|
||||||
|
return self._no_opts_label
|
||||||
|
|
||||||
async def _rx_symbols(self):
|
async def _rx_symbols(self):
|
||||||
async with find_local_monitor() as portal:
|
async with find_local_monitor() as portal:
|
||||||
|
|
@ -319,95 +328,6 @@ class OptionChain(object):
|
||||||
|
|
||||||
log.debug("Finished rendering rows!")
|
log.debug("Finished rendering rows!")
|
||||||
|
|
||||||
async def _start_displaying(self, symbol, expiry=None):
|
|
||||||
"""Main routine to start displaying the real time updated strike
|
|
||||||
table.
|
|
||||||
|
|
||||||
Clear any existing data feed subscription that is no longer needed
|
|
||||||
(eg. when clicking a new expiry button) spin up a new subscription,
|
|
||||||
populate the table and start updating it.
|
|
||||||
"""
|
|
||||||
# redraw any symbol specific UI components
|
|
||||||
if self.symbol != symbol or expiry is None:
|
|
||||||
# set window title
|
|
||||||
self.widgets['window'].set_title(
|
|
||||||
self._title.format(symbol=symbol)
|
|
||||||
)
|
|
||||||
|
|
||||||
# retreive all contracts to populate expiry row
|
|
||||||
all_contracts = await contracts(self.feed.brokermod, symbol)
|
|
||||||
# start streaming soonest contract by default if not provided
|
|
||||||
expiry = next(iter(all_contracts)).expiry if not expiry else expiry
|
|
||||||
|
|
||||||
# TODO: figure out how to compact these buttons
|
|
||||||
expiries = {
|
|
||||||
key.expiry: key.expiry[:key.expiry.find('T')]
|
|
||||||
for key in all_contracts
|
|
||||||
}
|
|
||||||
expiry_row = self.widgets['expiry_row']
|
|
||||||
expiry_row.clear_widgets()
|
|
||||||
|
|
||||||
for expiry, justdate in expiries.items():
|
|
||||||
button = ExpiryButton(text=str(justdate), key=expiry)
|
|
||||||
# assign us to each expiry button
|
|
||||||
button.chain = self
|
|
||||||
expiry_row.add_widget(button)
|
|
||||||
|
|
||||||
if self.widgets.get('table'):
|
|
||||||
self.clear_strikes()
|
|
||||||
|
|
||||||
if self._update_cs:
|
|
||||||
log.warn("Cancelling existing update task")
|
|
||||||
self._update_cs.cancel()
|
|
||||||
await trio.sleep(0)
|
|
||||||
|
|
||||||
if self._quote_gen:
|
|
||||||
await self._quote_gen.aclose()
|
|
||||||
|
|
||||||
if self._nursery is None:
|
|
||||||
raise RuntimeError(
|
|
||||||
"You must call open this chain's update scope first!")
|
|
||||||
|
|
||||||
log.debug(f"Waiting on first_quotes for {symbol}:{expiry}")
|
|
||||||
self._quote_gen, first_quotes = await self.feed.open_stream(
|
|
||||||
[(symbol, expiry)]
|
|
||||||
)
|
|
||||||
log.debug(f"Got first_quotes for {symbol}:{expiry}")
|
|
||||||
records, displayables = self.feed.format_quotes(first_quotes)
|
|
||||||
|
|
||||||
# draw static widgets only once
|
|
||||||
if self._static_widgets_initialized is False:
|
|
||||||
self._init_static_widgets(displayables)
|
|
||||||
self._static_widgets_initialized = True
|
|
||||||
|
|
||||||
n = self._nursery
|
|
||||||
self.render_rows(records, displayables)
|
|
||||||
|
|
||||||
with trio.open_cancel_scope() as cs:
|
|
||||||
self._update_cs = cs
|
|
||||||
await n.start(
|
|
||||||
partial(
|
|
||||||
update_quotes,
|
|
||||||
n,
|
|
||||||
self.feed.brokermod.format_option_quote,
|
|
||||||
self.widgets,
|
|
||||||
self._quote_gen,
|
|
||||||
symbol_data={},
|
|
||||||
first_quotes=first_quotes,
|
|
||||||
)
|
|
||||||
)
|
|
||||||
self.symbol, self.expiry = symbol, expiry
|
|
||||||
|
|
||||||
def start_displaying(self, symbol, expiry):
|
|
||||||
if self.symbol == symbol and self.expiry == expiry:
|
|
||||||
log.info(f"Clicked {symbol}:{expiry} is already selected")
|
|
||||||
return
|
|
||||||
|
|
||||||
log.info(f"Subscribing for {symbol}:{expiry}")
|
|
||||||
self._nursery.start_soon(
|
|
||||||
partial(self._start_displaying, symbol, expiry=expiry)
|
|
||||||
)
|
|
||||||
|
|
||||||
def _init_static_widgets(self, displayables):
|
def _init_static_widgets(self, displayables):
|
||||||
assert self._static_widgets_initialized is False
|
assert self._static_widgets_initialized is False
|
||||||
container = self.widgets['container']
|
container = self.widgets['container']
|
||||||
|
|
@ -469,6 +389,104 @@ class OptionChain(object):
|
||||||
'pager': pager,
|
'pager': pager,
|
||||||
})
|
})
|
||||||
|
|
||||||
|
async def _start_displaying(self, symbol, expiry=None):
|
||||||
|
"""Main routine to start displaying the real time updated strike
|
||||||
|
table.
|
||||||
|
|
||||||
|
Clear any existing data feed subscription that is no longer needed
|
||||||
|
(eg. when clicking a new expiry button) spin up a new subscription,
|
||||||
|
populate the table and start updating it.
|
||||||
|
"""
|
||||||
|
table = self.widgets.get('table')
|
||||||
|
if table:
|
||||||
|
self.clear_strikes()
|
||||||
|
|
||||||
|
if self._update_cs:
|
||||||
|
log.warn("Cancelling existing update task")
|
||||||
|
self._update_cs.cancel()
|
||||||
|
await trio.sleep(0)
|
||||||
|
|
||||||
|
if self._quote_gen:
|
||||||
|
await self._quote_gen.aclose()
|
||||||
|
|
||||||
|
# redraw any symbol specific UI components
|
||||||
|
if self.symbol != symbol or expiry is None:
|
||||||
|
# set window title
|
||||||
|
self.widgets['window'].set_title(
|
||||||
|
self._title.format(symbol=symbol)
|
||||||
|
)
|
||||||
|
|
||||||
|
# retreive all contracts to populate expiry row
|
||||||
|
all_contracts = await contracts(self.feed.brokermod, symbol)
|
||||||
|
|
||||||
|
if not all_contracts:
|
||||||
|
label = self.no_opts_label
|
||||||
|
label.symbol = symbol
|
||||||
|
if table:
|
||||||
|
table.add_widget(label)
|
||||||
|
return
|
||||||
|
|
||||||
|
# start streaming soonest contract by default if not provided
|
||||||
|
expiry = next(iter(all_contracts)).expiry if not expiry else expiry
|
||||||
|
|
||||||
|
# TODO: figure out how to compact these buttons
|
||||||
|
expiries = {
|
||||||
|
key.expiry: key.expiry[:key.expiry.find('T')]
|
||||||
|
for key in all_contracts
|
||||||
|
}
|
||||||
|
expiry_row = self.widgets['expiry_row']
|
||||||
|
expiry_row.clear_widgets()
|
||||||
|
|
||||||
|
for expiry, justdate in expiries.items():
|
||||||
|
button = ExpiryButton(text=str(justdate), key=expiry)
|
||||||
|
# assign us to each expiry button
|
||||||
|
button.chain = self
|
||||||
|
expiry_row.add_widget(button)
|
||||||
|
|
||||||
|
if self._nursery is None:
|
||||||
|
raise RuntimeError(
|
||||||
|
"You must call open this chain's update scope first!")
|
||||||
|
|
||||||
|
log.debug(f"Waiting on first_quotes for {symbol}:{expiry}")
|
||||||
|
self._quote_gen, first_quotes = await self.feed.open_stream(
|
||||||
|
[(symbol, expiry)]
|
||||||
|
)
|
||||||
|
log.debug(f"Got first_quotes for {symbol}:{expiry}")
|
||||||
|
records, displayables = self.feed.format_quotes(first_quotes)
|
||||||
|
|
||||||
|
# draw static widgets only once
|
||||||
|
if self._static_widgets_initialized is False:
|
||||||
|
self._init_static_widgets(displayables)
|
||||||
|
self._static_widgets_initialized = True
|
||||||
|
|
||||||
|
self.render_rows(records, displayables)
|
||||||
|
|
||||||
|
with trio.open_cancel_scope() as cs:
|
||||||
|
self._update_cs = cs
|
||||||
|
await self._nursery.start(
|
||||||
|
partial(
|
||||||
|
update_quotes,
|
||||||
|
self._nursery,
|
||||||
|
self.feed.brokermod.format_option_quote,
|
||||||
|
self.widgets,
|
||||||
|
self._quote_gen,
|
||||||
|
symbol_data={},
|
||||||
|
first_quotes=first_quotes,
|
||||||
|
)
|
||||||
|
)
|
||||||
|
# always keep track of current subscription
|
||||||
|
self.symbol, self.expiry = symbol, expiry
|
||||||
|
|
||||||
|
def start_displaying(self, symbol, expiry):
|
||||||
|
if self.symbol == symbol and self.expiry == expiry:
|
||||||
|
log.info(f"Clicked {symbol}:{expiry} is already selected")
|
||||||
|
return
|
||||||
|
|
||||||
|
log.info(f"Subscribing for {symbol}:{expiry}")
|
||||||
|
self._nursery.start_soon(
|
||||||
|
partial(self._start_displaying, symbol, expiry=expiry)
|
||||||
|
)
|
||||||
|
|
||||||
|
|
||||||
async def new_chain_ui(
|
async def new_chain_ui(
|
||||||
portal: tractor._portal.Portal,
|
portal: tractor._portal.Portal,
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue