[HOLD #16078] Chat - Disappears popup mentioning @here when clicking outside the compos box

[lanitochka17]

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Issue found when executing Pr #19880

Action Performed:

1. Open the App
2. Go to any chat
3. Type @here
4. Click outside popup option
5. Click again on the compose box

Expected Result:

Window with pop-up options appears, after user touches the compose box

Actual Result:

Disappears popup mentioning @here when clicking outside the compos box

Workaround:

Unknown

Platforms:

Which of our officially supported platforms is this issue occurring on?

• Android / native
• Android / Chrome
• iOS / native
• iOS / Safari
• MacOS / Chrome / Safari
• MacOS / Desktop

**Version Number:**1.3.23.6

Reproducible in staging?: Yes

Reproducible in production?: Yes

If this was caught during regression testing, add the test name, ID and link from TestRail:

Email or phone of affected tester (no customers):

Logs: https://stackoverflow.com/c/expensify/questions/4856

Notes/Photos/Videos: Any additional supporting documentation

Bug6078928_19880_ios.mp4

Expensify/Expensify Issue URL:

Issue reported by: Applause - Internal Team

Slack conversation:

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[melvin-bot]

Triggered auto assignment to @mallenexpensify (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details.

[melvin-bot]

Bug0 Triage Checklist (Main S/O)

• This "bug" occurs on a supported platform (ensure Platforms in OP are ✅)
• This bug is not a duplicate report (check E/App issues and #expensify-bugs)
  • If it is, comment with a link to the original report, close the issue and add any novel details to the original issue instead
• This bug is reproducible using the reproduction steps in the OP. S/O
  • If the reproduction steps are clear and you're unable to reproduce the bug, check with the reporter and QA first, then close the issue.
  • If the reproduction steps aren't clear and you determine the correct steps, please update the OP.
• This issue is filled out as thoroughly and clearly as possible
  • Pay special attention to the title, results, platforms where the bug occurs, and if the bug happens on staging/production.
• I have reviewed and subscribed to the linked Slack conversation to ensure Slack/Github stay in sync

[allroundexperts]

Proposal

Please re-state the problem that we are trying to solve in this issue.

Mention options do not appear when composer is re-focused on iOS

What is the root cause of that problem?

We're calculating (and showing) the suggestions menu only on selection change. The root cause of the issue is that on iOS, the onSelectionChange handler does not fire if the cursor is at the same position as it was before the composer became unfocused. As an example, if selection started and ended at position3, and then the composer went out of focus (due to page switching), and later it came into focus again at that same cursor position, the onSelectionChange event won't fire. This would cause the suggestions function here to not trigger.

What changes do you think we should make in order to solve the problem?

We need to call calculateEmojiSuggestions and calculateMentionSuggestions function when the composer gets the initial focus. This can be done here.

We can also prevent the race condition that will happen on other platforms where both onSelectionChange and onFocus would happen when the composer comes into focus. This can be done by adding a check here to return early if composer state is not yet set to focused.

What alternative solutions did you explore? (Optional)

We can also run the suggestion calculation functions on composer focus for iOS only by creating a platform specific file.

[melvin-bot]

Triggered auto assignment to @dangrous (Engineering), see https://stackoverflow.com/c/expensify/questions/4319 for more details.

[mallenexpensify]

@allroundexperts good job in your explanation under "What is the root cause of that problem?"
I agree the issue is 'where' you click in the compose box. ie. if you click on whatever @[any-email] was highlighted, it'll likely show the popup. When you click a blank area in the compose box the popup might not show.

@dangrous 👀 plz. I'm unsure what's best

[bernhardoj]

This has the same root cause with this issue #16364 and probably the behavior gonna change based on this comment #16364 (comment).

[dangrous]

So I don't think this is a feature that most people would expect (most apps don't do this) BUT we do seem to do it on other platforms and our goal is always consistency between the platforms so I think we should either fix it here, or remove it everywhere (which is also what the comment @bernhardoj linked to suggests).

Not sure if that's an answer or not. Something should be done, just not sure what. Maybe we should discuss in Slack, or hold on 16364 and see what gets decided there?