From 0d31f5293ac827e083aef3e6d0edd29682f8cd7a Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Fri, 16 Dec 2022 20:53:55 -0500
Subject: [PATCH] Add `ChartPlotWidget.main_viz: Viz` convenience `@property`

---
 piker/ui/_app.py   | 3 +--
 piker/ui/_chart.py | 8 ++++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/piker/ui/_app.py b/piker/ui/_app.py
index 2743103e..3be073e7 100644
--- a/piker/ui/_app.py
+++ b/piker/ui/_app.py
@@ -178,8 +178,7 @@ def _main(
     tractor_kwargs,
 ) -> None:
     '''
-    Sync entry point to start a chart: a ``tractor`` + Qt runtime
-    entry point
+    Sync entry point to start a chart: a ``tractor`` + Qt runtime.
 
     '''
     run_qtractor(
diff --git a/piker/ui/_chart.py b/piker/ui/_chart.py
index aea1d927..a643c498 100644
--- a/piker/ui/_chart.py
+++ b/piker/ui/_chart.py
@@ -1365,4 +1365,12 @@ class ChartPlotWidget(pg.PlotWidget):
         self,
         key: str,
     ) -> Viz:
+        '''
+        Try to get an underlying ``Viz`` by key.
+
+        '''
         return self._vizs.get(key)
+
+    @property
+    def main_viz(self) -> Viz:
+        return self.get_viz(self.name)