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feat: Introduce slot for customizing course tab navigation#1917

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open-craft:kshitij/course-tabs-navigation-slot
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feat: Introduce slot for customizing course tab navigation#1917
xitij2000 wants to merge 1 commit into
openedx:masterfrom
open-craft:kshitij/course-tabs-navigation-slot

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Adds a new plugin slot (CourseTabsNavigationSlot) to enable customization, modification, or hiding of the course tab navigation.

@openedx-webhooks openedx-webhooks added open-source-contribution PR author is not from Axim or 2U core contributor PR author is a Core Contributor (who may or may not have write access to this repo). labels May 27, 2026
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Adds a new plugin slot (`CourseTabsNavigationSlot`) to enable customization, modification, or hiding of the course tab navigation. Updated relevant components to integrate with the new slot.
@xitij2000 xitij2000 force-pushed the kshitij/course-tabs-navigation-slot branch from d1f2907 to c9693eb Compare May 27, 2026 10:19
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codecov Bot commented May 27, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.32%. Comparing base (cfc91c3) to head (c9693eb).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files
@@            Coverage Diff             @@
##           master    #1917      +/-   ##
==========================================
+ Coverage   91.30%   91.32%   +0.02%     
==========================================
  Files         344      346       +2     
  Lines        5774     5790      +16     
  Branches     1351     1387      +36     
==========================================
+ Hits         5272     5288      +16     
  Misses        483      483              
  Partials       19       19              

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Overall this looks great! I left a couple comments about the PropTypes -> .tsx conversion, once those are addressed this should be good to land!


interface LoadedTabPageProps {
activeTabSlug: string;
children: React.ReactNode;
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Suggested change
children: React.ReactNode;
children?: React.ReactNode;

functionally equivalent to not having the ? but this better communicates it as optional (matching what we had with PropTypes

activeTabSlug: string;
children: React.ReactNode;
courseId: string;
metadataModel: string;
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Suggested change
metadataModel: string;
metadataModel?: string;

The PropTypes version of this was optional

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Wherever possible I tried to go for a more strict definition that would still work. Here the consumer StreakModal marks it as required. Since it gets a default value, I think the only situation where it would be undefined would be if someone explicitly passes undefined.

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After digging into this a bit I agree a more strict definition works. StreakModal having it marked as required doesn't really play into this, as it would get the required string from LoadedTabPage's default. TabPage, on the other hand, is the only consumer of LoadedTabPage and has metadataModel set up to be required.

With that in mind, I think it makes sense to:

  • Make the switch to required from optional
  • Drop the default (it's unreachable when metadataModel is required)
  • Update any tests that rely on the default

children: React.ReactNode;
courseId: string;
metadataModel: string;
unitId: string | null;
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Suggested change
unitId: string | null;
unitId?: string | null;

To match the PropTypes logic we:

  • ? so it's optional
  • string for the actual string type
  • | null because ? just supports undefined, not null

We likely don't need to match the PropTypes logic exactly here, and ideally we could just use unitId?: string and default to undefined, but that'd require some deeper digging (and should probably be a follow-up issue).

From a sub-components perspective, we can just check where unitId is used to see if defaulting to undefined would be a reasonable option. It seems to only be in InstructorToolbar, and it like undefined would be fine there:



const urlStudio = getStudioUrl(courseId, unitId);

The consumers of LoadedTabPage are where it gets messy. Org search shows it only being used in frontend-app-learning which limits the blast radius a bit, but there's still a lot of null being used. In TabPage for example:

unitId: PropTypes.string,


<LoadedTabPage {...props} />

and then we'd need to dig into the consumers of TabPage and so on.


return (
<div id="courseTabsNavigation" className={classNames('course-tabs-navigation', className)}>
<div id="courseTabsNavigation" className="mb-3 course-tabs-navigation">
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At first I was slightly concerned about this moving in here instead of coming from the consumer in LoadedTabPage, but it seems the only other place that references this is

const info = useElementBoundingBox('courseTabsNavigation');

which is only used by the next line

const top = info ? `${Math.floor(info.top)}px` : 0;

which only cares about the top which isn't changed by mb.

Comment thread src/course-tabs/CourseTabsNavigation.tsx
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