Remove gaps from charts due to weekends and holidays

chart.py

@@ -1,7 +1,18 @@
+from pandas import date_range, Series
 from plotly.basedatatypes import BaseTraceType
 from typing import List
 
 class Chart:
 
+    x: Series = None
+
     def traces(self) -> List[BaseTraceType]:
-        pass
+        pass
+
+    def range_breaks(self) -> List[dict]:
+        # Assuming x is either a date or timestamp.
+        start_date = self.x.min()
+        end_date = self.x.max()
+        all_dates = date_range(start = start_date, end = end_date)
+        missing_dates = all_dates.difference(self.x)
+        return [dict(values = missing_dates)]

plot.py

@@ -13,8 +13,19 @@ def figure_with_subplots(subplots: List[List[Chart]]) -> Figure:
         for j, chart in enumerate(row, start = 1):
             for trace in chart.traces():
                 figure.add_trace(trace, row = i, col = j)
-            figure.update_xaxes(showgrid = False, showticklabels = True, rangeslider = dict(visible = False), row = i, col = j)
-            figure.update_yaxes(showgrid = False, side = 'right', row = i, col = j)
+
+            figure.update_xaxes(
+                showgrid = False, 
+                showticklabels = True, 
+                rangebreaks = chart.range_breaks(), 
+                rangeslider = dict(visible = False), 
+                row = i, col = j
+            )
+            figure.update_yaxes(
+                showgrid = False, 
+                side = 'right', 
+                row = i, col = j
+            )
 
     # TODO: Make this configurable.
     figure.update_layout(