added button to clear times

Signed-off-by: Mina Mandic <[email protected]>

main_window.py

@@ -427,6 +427,11 @@ def __init__(self, parent: Widget, vm: Model) -> None:
         latestres.grid(column=0, row=0, rowspan=2, sticky="news")
         ToolTip(latestres, "Raw data from the latest race result")
 
+    def clear_time(self):
+        race_times = self._vm.latest_result.get()
+        race_times.clear_time()
+        self._vm.latest_result.set(race_times)
+
     def _cc_selector(self, parent: Widget) -> Widget:
         frame = ttk.LabelFrame(parent, text="Available Chromecasts")
         frame.columnconfigure(0, weight=1)
@@ -442,4 +447,6 @@ def _preview(self, parent: Widget) -> Widget:
         frame.rowconfigure(0, weight=1)
         widgets.Preview(frame, self._vm.scoreboard).grid(column=0, row=0)
         ToolTip(frame, "Current contents of the scoreboard")
+        button = ttk.Button(parent, text="Clear", command=self.clear_time)
+
         return frame

racetimes.py

@@ -160,6 +160,10 @@ def final_time(self, lane: int) -> Time:
             if abs(time - final) > self.threshold:
                 valid = False
         return Time(final, valid)
+
+    def clear_time(self):
+        """Clear all the times from the scoreboard"""
+        pass
 
     def place(self, lane: int) -> Optional[int]:
         """
@@ -263,6 +267,10 @@ def __init__(
 
     def raw_times(self, lane: int) -> List[Optional[RawTime]]:
         return self._lanes[lane - 1]
+
+    def clear_time(self):
+        for time in range(10):
+            self._lanes = [None, None, None]
 
     @property
     def event(self) -> int: