Add "scroll to activity" to activity directive table context menu (#1433

)

src/stores/plan.ts

@@ -6,6 +6,7 @@ import type { Tag } from '../types/tags';
 import type { TimeRange } from '../types/timeline';
 import gql from '../utilities/gql';
 import { gqlSubscribable } from './subscribable';
+import { getIntervalInMs } from '../utilities/time';
 
 /* Writeable. */
 
@@ -115,13 +116,15 @@ export function setActivityEditingLocked(locked: boolean) {
   activityEditingLocked.set(locked);
 }
 
+// follows similar pattern to TimelineViewControls.scrollToSelection
 export function setViewTimeRangeAroundTime(timeInMs: number) {
   const currentViewTimeRange = get(viewTimeRange);
-  const padding = (currentViewTimeRange.end - currentViewTimeRange.start)/2;
-  const maxRange = get(maxTimeRange);
-  viewTimeRange.set({
-    end: Math.min(maxRange.end, timeInMs + padding),
-    start: Math.max(maxRange.start, timeInMs - padding)
-  });
-
+  if (!isNaN(timeInMs) && (timeInMs < currentViewTimeRange.start || timeInMs > currentViewTimeRange.end)) {
+    const padding = (currentViewTimeRange.end - currentViewTimeRange.start) / 2;
+    const maxRange = get(maxTimeRange);
+    viewTimeRange.set({
+      end: Math.min(maxRange.end, timeInMs + padding),
+      start: Math.max(maxRange.start, timeInMs - padding)
+    });
+  }
 }