Make all UI entrypoints accept an fqsn `list`

This is to prep for multi-symbol feeds and charts so we accept
a sequence of fqsns to the top level entrypoints as well as the
`.data.feed.open_feed()` API (though we're not actually supporting true
multiplexed feeds nor shm lookups per fqsn yet).

piker/ui/_app.py

@@ -66,7 +66,7 @@ async def _async_main(
     # implicit required argument provided by ``qtractor_run()``
     main_widget: GodWidget,
 
-    sym: str,
+    syms: list[str],
     brokernames: str,
     loglevel: str,
 
@@ -113,12 +113,16 @@ async def _async_main(
         # godwidget.hbox.addWidget(search)
         godwidget.search = search
 
-        symbol, _, provider = sym.rpartition('.')
+        symbols: list[str] = []
+
+        for sym in syms:
+            symbol, _, provider = sym.rpartition('.')
+            symbols.append(symbol)
 
         # this internally starts a ``display_symbol_data()`` task above
-        order_mode_ready = await godwidget.load_symbol(
+        order_mode_ready = await godwidget.load_symbols(
             provider,
-            symbol,
+            symbols,
             loglevel
         )
 
@@ -166,7 +170,7 @@ async def _async_main(
 
 
 def _main(
-    sym: str,
+    syms: list[str],
     brokernames: [str],
     piker_loglevel: str,
     tractor_kwargs,
@@ -178,7 +182,7 @@ def _main(
     '''
     run_qtractor(
         func=_async_main,
-        args=(sym, brokernames, piker_loglevel),
+        args=(syms, brokernames, piker_loglevel),
         main_widget_type=GodWidget,
         tractor_kwargs=tractor_kwargs,
     )

piker/ui/_chart.py

@@ -186,10 +186,10 @@ class GodWidget(QWidget):
     ) -> tuple[LinkedSplits, LinkedSplits]:  # type: ignore
         return self._chart_cache.get(symbol_key)
 
-    async def load_symbol(
+    async def load_symbols(
         self,
         providername: str,
-        symbol_key: str,
+        symbol_keys: list[str],
         loglevel: str,
         reset: bool = False,
 
@@ -200,12 +200,20 @@ class GodWidget(QWidget):
         Expects a ``numpy`` structured array containing all the ohlcv fields.
 
         '''
-        # our symbol key style is always lower case
+        fqsns: list[str] = []
-        symbol_key = symbol_key.lower()
 
-        # fully qualified symbol name (SNS i guess is what we're making?)
+        # our symbol key style is always lower case
-        fqsn = '.'.join([symbol_key, providername])
+        for key in list(map(str.lower, symbol_keys)):
-        all_linked = self.get_chart_symbol(fqsn)
+
+            # fully qualified symbol name (SNS i guess is what we're making?)
+            fqsn = '.'.join([key, providername])
+            fqsns.append(fqsn)
+
+        # NOTE: for now we use the first symbol in the set as the "key"
+        # for the overlay of feeds on the chart.
+        group_key = fqsns[0]
+
+        all_linked = self.get_chart_symbol(group_key)
         order_mode_started = trio.Event()
 
         if not self.vbox.isEmpty():
@@ -238,7 +246,7 @@ class GodWidget(QWidget):
                 display_symbol_data,
                 self,
                 providername,
-                symbol_key,
+                fqsns,
                 loglevel,
                 order_mode_started,
             )

piker/ui/_display.py

@@ -947,7 +947,7 @@ async def link_views_with_region(
 async def display_symbol_data(
     godwidget: GodWidget,
     provider: str,
-    sym: str,
+    fqsns: list[str],
     loglevel: str,
     order_mode_started: trio.Event,
 
@@ -961,11 +961,6 @@ async def display_symbol_data(
 
     '''
     sbar = godwidget.window.status_bar
-    loading_sym_key = sbar.open_status(
-        f'loading {sym}.{provider} ->',
-        group_key=True
-    )
-
     # historical data fetch
     # brokermod = brokers.get_brokermod(provider)
 
@@ -974,10 +969,18 @@ async def display_symbol_data(
     #     clear_on_next=True,
     #     group_key=loading_sym_key,
     # )
-    fqsn = '.'.join((sym, provider))
+
+    for fqsn in fqsns:
+
+        loading_sym_key = sbar.open_status(
+            f'loading {fqsn} ->',
+            group_key=True
+        )
+
+    first_fqsn = fqsns[0]
 
     async with open_feed(
-        [fqsn],
+        fqsns,
         loglevel=loglevel,
 
         # limit to at least display's FPS
@@ -988,7 +991,7 @@ async def display_symbol_data(
         ohlcv: ShmArray = feed.rt_shm
         hist_ohlcv: ShmArray = feed.hist_shm
 
-        symbol = feed.symbols[sym]
+        symbol = feed.symbols[first_fqsn]
         fqsn = symbol.front_fqsn()
 
         step_size_s = 1
@@ -1025,7 +1028,7 @@ async def display_symbol_data(
         godwidget.pp_pane = pp_pane
 
         # create main OHLC chart
-        chart = rt_linked.plot_ohlc_main(
+        ohlc_chart = rt_linked.plot_ohlc_main(
             symbol,
             ohlcv,
             # in the case of history chart we explicitly set `False`
@@ -1033,8 +1036,8 @@ async def display_symbol_data(
             sidepane=pp_pane,
         )
 
-        chart._feeds[symbol.key] = feed
+        ohlc_chart._feeds[symbol.key] = feed
-        chart.setFocus()
+        ohlc_chart.setFocus()
 
         # XXX: FOR SOME REASON THIS IS CAUSING HANGZ!?!
         # plot historical vwap if available
@@ -1044,7 +1047,7 @@ async def display_symbol_data(
         #     and 'bar_wap' in bars.dtype.fields
         # ):
         #     wap_in_history = True
-        #     chart.draw_curve(
+        #     ohlc_chart.draw_curve(
         #         name='bar_wap',
         #         shm=ohlcv,
         #         color='default_light',
@@ -1105,7 +1108,7 @@ async def display_symbol_data(
             await trio.sleep(0)
 
             # size view to data prior to order mode init
-            chart.default_view()
+            ohlc_chart.default_view()
             rt_linked.graphics_cycle()
             await trio.sleep(0)
 
@@ -1119,7 +1122,7 @@ async def display_symbol_data(
             godwidget.resize_all()
 
             await link_views_with_region(
-                chart,
+                ohlc_chart,
                 hist_chart,
                 feed,
             )
@@ -1135,7 +1138,7 @@ async def display_symbol_data(
             ):
                 if not vlm_chart:
                     # trigger another view reset if no sub-chart
-                    chart.default_view()
+                    ohlc_chart.default_view()
 
                 rt_linked.mode = mode