From f8e24f732c9ec8b43ac136a9a6030707a554dbed Mon Sep 17 00:00:00 2001
From: Bryan <bryan.duran@jpl.nasa.gov>
Date: Tue, 20 Aug 2024 17:11:14 -0700
Subject: [PATCH] Explicitly track offsetX in timeline context menu (#1435)

* fix: explicitly keep track of the timeline context menu position for firefox compatibility
---
 src/components/timeline/Timeline.svelte       |  2 +-
 .../timeline/TimelineContextMenu.svelte       | 14 ++++----
 .../timeline/TimelineViewControls.svelte      | 36 +++++++++++--------
 3 files changed, 30 insertions(+), 22 deletions(-)

diff --git a/src/components/timeline/Timeline.svelte b/src/components/timeline/Timeline.svelte
index 1ac644e730..6b8a219fe1 100644
--- a/src/components/timeline/Timeline.svelte
+++ b/src/components/timeline/Timeline.svelte
@@ -263,7 +263,7 @@
 
   export function viewTimeRangeChanged(viewTimeRange: TimeRange, zoomTransform?: ZoomTransform) {
     dispatch('viewTimeRangeChanged', viewTimeRange);
-    // Assign zoom transform if provided to syncronize all d3 zoom handlers
+    // Assign zoom transform if provided to synchronize all d3 zoom handlers
     if (zoomTransform) {
       timelineZoomTransform = zoomTransform;
     } else {
diff --git a/src/components/timeline/TimelineContextMenu.svelte b/src/components/timeline/TimelineContextMenu.svelte
index dd56ff2582..3f8ea83b2b 100644
--- a/src/components/timeline/TimelineContextMenu.svelte
+++ b/src/components/timeline/TimelineContextMenu.svelte
@@ -69,6 +69,7 @@
   let hasActivityLayer: boolean = false;
   let mouseOverOrigin: MouseOverOrigin | undefined = undefined;
   let row: Row | undefined = undefined;
+  let offsetX: number | undefined;
 
   // TODO imports here could be better, should we handle the vertical guide creation in Timeline?
   $: timelines = $view?.definition.plan.timelines ?? [];
@@ -106,6 +107,8 @@
   $: activityDirectiveStartDate = activityDirective
     ? new Date(getUnixEpochTimeFromInterval(planStartTimeYmd, activityDirective.start_offset))
     : null;
+  // Explicitly keep track of offsetX because Firefox ends up zeroing it out on the original `contextmenu` MouseEvent
+  $: offsetX = contextMenu?.e.offsetX;
 
   function jumpToActivityDirective() {
     if (span !== null) {
@@ -163,8 +166,8 @@
   }
 
   function onZoom(duration: number) {
-    if (xScaleView && contextMenu) {
-      const time = activityDirectiveStartDate ? activityDirectiveStartDate : xScaleView.invert(contextMenu.e.offsetX);
+    if (xScaleView && offsetX !== undefined) {
+      const time = activityDirectiveStartDate ? activityDirectiveStartDate : xScaleView.invert(offsetX);
       const newViewTimeRange: TimeRange = {
         end: Math.min(time.getTime() + duration / 2, maxTimeRange.end),
         start: Math.max(time.getTime() - duration / 2, maxTimeRange.start),
@@ -353,7 +356,7 @@
       </ContextSubMenuItem>
     {:else}
       <ContextMenuItem
-        on:click={() => xScaleView && contextMenu && addVerticalGuide(xScaleView.invert(contextMenu.e.offsetX))}
+        on:click={() => xScaleView && offsetX !== undefined && addVerticalGuide(xScaleView.invert(offsetX))}
       >
         Place Guide
       </ContextMenuItem>
@@ -370,8 +373,7 @@
             },
           ],
         ]}
-        on:click={() =>
-          xScaleView && contextMenu && updateSimulationStartTime(xScaleView.invert(contextMenu.e.offsetX))}
+        on:click={() => xScaleView && offsetX !== undefined && updateSimulationStartTime(xScaleView.invert(offsetX))}
       >
         Set Simulation Start
       </ContextMenuItem>
@@ -387,7 +389,7 @@
             },
           ],
         ]}
-        on:click={() => xScaleView && contextMenu && updateSimulationEndTime(xScaleView.invert(contextMenu.e.offsetX))}
+        on:click={() => xScaleView && offsetX !== undefined && updateSimulationEndTime(xScaleView.invert(offsetX))}
       >
         Set Simulation End
       </ContextMenuItem>
diff --git a/src/components/timeline/TimelineViewControls.svelte b/src/components/timeline/TimelineViewControls.svelte
index 6209394376..903ff1fb15 100644
--- a/src/components/timeline/TimelineViewControls.svelte
+++ b/src/components/timeline/TimelineViewControls.svelte
@@ -69,22 +69,28 @@
     scrollIfOffscreen();
   }
 
-  $: if (
-    typeof window !== 'undefined' &&
-    ($selectedActivityDirective || $selectedSpan || $simulationDatasetId !== null)
-  ) {
-    viewURL = new URL(window.location.href);
-    viewURL.searchParams.set(SearchParameters.START_TIME, new Date(viewTimeRange.start).toISOString());
-    viewURL.searchParams.set(SearchParameters.END_TIME, new Date(viewTimeRange.end).toISOString());
-    if ($selectedActivityDirective) {
-      viewURL.searchParams.set(SearchParameters.ACTIVITY_ID, $selectedActivityDirective.id.toFixed());
-    }
-    if ($selectedSpan) {
-      viewURL.searchParams.set(SearchParameters.SPAN_ID, $selectedSpan.span_id.toFixed());
-    }
-    if ($simulationDatasetId) {
-      viewURL.searchParams.set(SearchParameters.SIMULATION_DATASET_ID, $simulationDatasetId.toFixed());
+  // The time range can potentially become invalid by zooming in too much which will cause the following to fail
+  // A try/catch is used here to prevent the UI from becoming unresponsive if an invalid time range is provided
+  $: try {
+    if (
+      typeof window !== 'undefined' &&
+      ($selectedActivityDirective || $selectedSpan || $simulationDatasetId !== null)
+    ) {
+      viewURL = new URL(window.location.href);
+      viewURL.searchParams.set(SearchParameters.START_TIME, new Date(viewTimeRange.start).toISOString());
+      viewURL.searchParams.set(SearchParameters.END_TIME, new Date(viewTimeRange.end).toISOString());
+      if ($selectedActivityDirective) {
+        viewURL.searchParams.set(SearchParameters.ACTIVITY_ID, $selectedActivityDirective.id.toFixed());
+      }
+      if ($selectedSpan) {
+        viewURL.searchParams.set(SearchParameters.SPAN_ID, $selectedSpan.span_id.toFixed());
+      }
+      if ($simulationDatasetId) {
+        viewURL.searchParams.set(SearchParameters.SIMULATION_DATASET_ID, $simulationDatasetId.toFixed());
+      }
     }
+  } catch (e) {
+    console.log(e);
   }
 
   function onKeydown(e: KeyboardEvent) {