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[Video] The controls bar flickers when video's popover menu is closed #41125

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merged 2 commits into from
May 13, 2024

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ikevin127
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@ikevin127 ikevin127 commented Apr 27, 2024

Details

Because within our VideoPopoverMenu component we're using a portal, when this is open it comes on top of the BaseVideoPlayer Hoverable surface of the video. These are the events that occur which lead to our issue:

  • The video player controls 3-dot menu (More) is clicked -> Popover opens -> isHovered state is set to false.
  • User clicks outside of the Popover -> Popover closes -> isHovered state is set to false again.
  • Right after the Popover is gone, the Hoverable surface re-captures the mouse event -> isHovered state is set to true.

Our issue occurs between (2.) and (3.) in very quick succession which causes the flicker of the video player controls bar because of this condition here, specifically the isHovered state variable coming from the Hoverable component which wraps the video container, toggling false/true in quick succession right after the isPopoverVisible becomes false.

This PR introduces a new boolean prop to the Hoverable component, named shouldFreezeCapture which will be used within the ActiveHoverable component to prevent setting the isHovered state to false the second time (unnecessarily) when an open portal (popover / modal) is being closed, essentially freezing the capture of the hover event.

Note

This behaviour and fix can observed only on large layout devices where hover event is available.

Fixed Issues

$ #39598
PROPOSAL: #39598 (comment)

Tests

Tip

  1. Go to any chat.
  2. Add a video attachment (you don't need to upload it).
  3. Click on the 3-dot (More) button to open the Popover (you should see the Playback speed option).
  4. Click outside of the Popover in order to close it.
  5. Notice:
  • if the click outside the popover was applied within the video view -> the video controls bar remains visible and does not flicker when the popover menu is closed;
  • if the click outside the popover was applied outside of the video view -> the video controls bar disappears without flickering
  • Verify that no errors appear in the JS console

Offline tests

TLDR: same as Tests.

Tip

  1. Go to any chat.
  2. Add a video attachment (you don't need to upload it).
  3. Click on the 3-dot (More) button to open the Popover (you should see the Playback speed option).
  4. Click outside of the Popover in order to close it.
  5. Notice:
  • if the click outside the popover was applied within the video view -> the video controls bar remains visible and does not flicker when the popover menu is closed;
  • if the click outside the popover was applied outside of the video view -> the video controls bar disappears without flickering

QA Steps

TLDR: same as Tests.

Tip

  1. Go to any chat.
  2. Add a video attachment (you don't need to upload it).
  3. Click on the 3-dot (More) button to open the Popover (you should see the Playback speed option).
  4. Click outside of the Popover in order to close it.
  5. Notice:
  • if the click outside the popover was applied within the video view -> the video controls bar remains visible and does not flicker when the popover menu is closed;
  • if the click outside the popover was applied outside of the video view -> the video controls bar disappears without flickering
  • Verify that no errors appear in the JS console

PR Author Checklist

  • I linked the correct issue in the ### Fixed Issues section above
  • I wrote clear testing steps that cover the changes made in this PR
    • I added steps for local testing in the Tests section
    • I added steps for the expected offline behavior in the Offline steps section
    • I added steps for Staging and/or Production testing in the QA steps section
    • I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
    • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
    • I tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
  • I included screenshots or videos for tests on all platforms
  • I ran the tests on all platforms & verified they passed on:
    • Android: Native
    • Android: mWeb Chrome
    • iOS: Native
    • iOS: mWeb Safari
    • MacOS: Chrome / Safari
    • MacOS: Desktop
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Screenshots/Videos

Android: Native
android.mov
Android: mWeb Chrome
android-mweb.mov
iOS: Native
ios.MP4
iOS: mWeb Safari
ios-mweb.mov
MacOS: Chrome / Safari
web.mov
MacOS: Desktop
desktop.mov

@ikevin127 ikevin127 requested a review from a team as a code owner April 27, 2024 00:23
@melvin-bot melvin-bot bot removed the request for review from a team April 27, 2024 00:23
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melvin-bot bot commented Apr 27, 2024

@rojiphil Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

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@ikevin127 Observations on testing the PR version with expanded mode of video player are as below:

1) Chrome:
a) Click inside of player => Action Bar remains shown (without flicker)
b) Click outside of player => Action Bar hides

Chrome:Outside Click
fix-chrome-outside.mp4

2) Safari:
a) Click inside of player => Action Bar remains shown (without flicker)
b) Click outside of player => Action Bar remains shown. Only after mouse move, it hides.

Safari:Outside Click
fix-safari-outside.mp4

So, while the flicker issue is resolved, we still have an inconsistency issue between Chrome and Safari when clicked outside. Here, the expected behavior is for the Action bar to be hidden on clicking outside on Safari (i.e. just like Chrome does).
What do you think?

@ikevin127
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@rojiphil I think given that the flicker issue is resolved, the behaviour on Safari is strictly related to browser-specific handling of the mouseover event and not a blocker when it comes to this PR.

From what I can see, on Safari, once the popover is closed, the user needs to actually move the cursor outside of the video view for the controls to dissapear which means that the Hoverable component only captures the mouse moving once the user actually moves it.

I think these are just small differences between how Safari vs other browsers handle the mouseover event capture.

If you think this is a PR blocker then let me know and I'll spend a few more days looking into this in hopes to align the behaviour from Safari with other browsers.

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the behaviour on Safari is strictly related to browser-specific handling of the mouseover event and not a blocker when it comes to this PR

@ikevin127 The behavior on Safari changed only after this PR. Before the fix, the action bar hid when clicked outside the player. But now it doesn't. To me, this is a regression and needs a fix. no?

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@ikevin127
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@rojiphil I looked into it and I can't find a solution. The problem is that Safari doesn't re-capture the mouseover event when the popover is closed without user actually moving the cursor, whereas Chrome re-captures it without user action.
Here's the behaviour on Safari before the fix (current main) and with the fix:

MacOS: Safari (before / after)
Before After
before.mov
after.mov

As you can see on the before video on Safari, the issue on current main is that when the popover closes the video controls are hidden and only show up when the user moves the mouse over the video. With the fix, this issue is solved, but this thing will happen now with hiding the controls when cursor is outside -> which only works when user moves the mouse outside of the video in order for Safari to re-capture the mousemove event and hide the video controls.

Again, this is a weird Safari specific issue where cursor-related events are not fired unless the user actually moves the cursor. To conclude, it's either you're fine with moving forward with this as is, or I'm going to close this PR and the issue can continue to look for other proposals which will cover everything you're asking for, perfectly.

I, for one, I'm not willing to invest anymore more time into this as my capacity is limited and additionally -> I consider the issue is fixed and the behaviour on Safari evens out if we compare before / after.

Let me know what you decide!

@rojiphil
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rojiphil commented May 5, 2024

it's either you're fine with moving forward with this as is

The worry I have here is that the PR changes have changed behavior as mentioned here and here. However, since it is only until the mouse moves again, it may also be fine. I would want @mountiny to weigh in here and arrive at a consensus. What’s your take here?

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rojiphil commented May 5, 2024

Meanwhile, let me also get a quick check on this with @Skalakid. Do you see any way to fix the behavior mentioned here?

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Skalakid commented May 6, 2024

I agree with @ikevin127 it's a really small edge case and it seems like a Safari bug. I tried using the mouseover event dispatching and updating the isHovered state when shouldFreezeCapture is set back to false, but every time there was a problem with event order on different browsers and new edge cases appeared. I can look into that tomorrow

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Skalakid commented May 7, 2024

I wasn't able to find any solution for this problem in my limited time capacity. @mountiny should we go with current solution or try to get different proposal that doesn't introduce any regression?

@ikevin127
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try to get different proposal that doesn't introduce any regression

I wouldn't call the observed behaviour a regression 😅
I see the current vs PR behaviour on Safari as an actual improvement, as detailed in #41125 (comment) (see before / after videos):

As you can see on the before video on Safari, the issue on current main is that when the popover closes the video controls are hidden and only show up when the user moves the mouse over the video. With the fix, this issue is solved, but this thing will happen now with hiding the controls when cursor is outside -> which only works when user moves the mouse outside of the video in order for Safari to re-capture the mousemove event and hide the video controls.

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mountiny commented May 8, 2024

@rojiphil @ikevin127 I dont think this is a problem, we can go ahead with this PR if that is the only thing noticed

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Reviewer Checklist

  • I have verified the author checklist is complete (all boxes are checked off).
  • I verified the correct issue is linked in the ### Fixed Issues section above
  • I verified testing steps are clear and they cover the changes made in this PR
    • I verified the steps for local testing are in the Tests section
    • I verified the steps for Staging and/or Production testing are in the QA steps section
    • I verified the steps cover any possible failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
    • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
  • I checked that screenshots or videos are included for tests on all platforms
  • I included screenshots or videos for tests on all platforms
  • I verified tests pass on all platforms & I tested again on:
    • Android: Native
    • Android: mWeb Chrome
    • iOS: Native
    • iOS: mWeb Safari
    • MacOS: Chrome / Safari
    • MacOS: Desktop
  • If there are any errors in the console that are unrelated to this PR, I either fixed them (preferred) or linked to where I reported them in Slack
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    • I verified that the left part of a conditional rendering a React component is a boolean and NOT a string, e.g. myBool && <MyComponent />.
    • I verified that comments were added to code that is not self explanatory
    • I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
    • I verified any copy / text shown in the product is localized by adding it to src/languages/* files and using the translation method
    • I verified all numbers, amounts, dates and phone numbers shown in the product are using the localization methods
    • I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
    • I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
    • I verified the JSDocs style guidelines (in STYLE.md) were followed
  • If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
  • I verified that this PR follows the guidelines as stated in the Review Guidelines
  • I verified other components that can be impacted by these changes have been tested, and I retested again (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar have been tested & I retested again)
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Screenshots/Videos

MacOS: Chrome / Safari
39598-web-safari.mp4
39598-web-chrome.mp4
Android: Native
39598-android-native.mp4
Android: mWeb Chrome
39598-mweb-chrome.mp4
iOS: Native
39598-ios-native.mp4
iOS: mWeb Safari
39598-mweb-safari.mp4
MacOS: Desktop
39598-desktop.mp4

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Thanks @ikevin127. LGTM and tests well too.

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Thanks!

@mountiny mountiny merged commit 9083c3e into Expensify:main May 13, 2024
17 of 19 checks passed
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✋ This PR was not deployed to staging yet because QA is ongoing. It will be automatically deployed to staging after the next production release.

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🚀 Deployed to staging by https://github.com/mountiny in version: 1.4.74-0 🚀

platform result
🤖 android 🤖 success ✅
🖥 desktop 🖥 success ✅
🍎 iOS 🍎 success ✅
🕸 web 🕸 success ✅

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🚀 Deployed to production by https://github.com/chiragsalian in version: 1.4.74-6 🚀

platform result
🤖 android 🤖 success ✅
🖥 desktop 🖥 success ✅
🍎 iOS 🍎 success ✅
🕸 web 🕸 success ✅

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5 participants