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Add focus trap #39520

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merged 34 commits into from
Jun 12, 2024
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adamgrzybowski
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@adamgrzybowski adamgrzybowski commented Apr 3, 2024

Details

This PR adds focus-trap to fix the problem when the user navigates with tab between elements that are not visible.

Fixed Issues

$ #36476
PROPOSAL: #36476 (comment)

Tests

  1. Open LHP, RHP or modal.
  2. Try to navigate with TAB.
  3. Only elements in LHP or RHP should focus.
  • Verify that no errors appear in the JS console

Offline tests

QA Steps

  • 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
  • I verified there are no console errors (if there's a console error not related to the PR, report it or open an issue for it to be fixed)
  • I followed proper code patterns (see Reviewing the code)
    • I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick)
    • 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
      • If any non-english text was added/modified, I verified the translation was requested/reviewed in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
    • 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 followed the guidelines as stated in the Review Guidelines
  • I tested other components that can be impacted by my changes (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar are working as expected)
  • I verified all code is DRY (the PR doesn't include any logic written more than once, with the exception of tests)
  • I verified any variables that can be defined as constants (ie. in CONST.js or at the top of the file that uses the constant) are defined as such
  • I verified that if a function's arguments changed that all usages have also been updated correctly
  • If any new file was added I verified that:
    • The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
  • If a new CSS style is added I verified that:
    • A similar style doesn't already exist
    • The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG))
  • If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
  • If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
  • If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
  • If the PR modifies a component or page that can be accessed by a direct deeplink, I verified that the code functions as expected when the deeplink is used - from a logged in and logged out account.
  • If the PR modifies the UI (e.g. new buttons, new UI components, changing the padding/spacing/sizing, moving components, etc) or modifies the form input styles:
    • I verified that all the inputs inside a form are aligned with each other.
    • I added Design label and/or tagged @Expensify/design so the design team can review the changes.
  • If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
  • If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.

Screenshots/Videos

Android: Native
Android: mWeb Chrome
iOS: Native
iOS: mWeb Safari
MacOS: Chrome / Safari
MacOS: Desktop

@@ -113,6 +113,7 @@
"expo-av": "~13.10.4",
"expo-image": "1.11.0",
"expo-image-manipulator": "11.8.0",
"focus-trap-react": "^10.2.3",
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Request was resolved successfully

@@ -0,0 +1,5 @@
import SCREENS from '@src/SCREENS';

const BOTTOM_TAB_SCREENS: string[] = [SCREENS.HOME, SCREENS.SETTINGS.ROOT];
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Instead of string[], use BottomTabName[]

@jnowakow
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Details

Fixed Issues

$ #36476
PROPOSAL: #36476 (comment)

Tests

  1. Open LHP, RHP or modal.
  2. Try to navigate with TAB.
  3. Only elements in LHP or RHP should focus.
  • Verify that no errors appear in the JS console

Offline tests

N/A

QA Steps

Same as in Tests

  • 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
  • I verified there are no console errors (if there's a console error not related to the PR, report it or open an issue for it to be fixed)
  • I followed proper code patterns (see Reviewing the code)
    • I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick)
    • 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
      • If any non-english text was added/modified, I verified the translation was requested/reviewed in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
    • 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 followed the guidelines as stated in the Review Guidelines
  • I tested other components that can be impacted by my changes (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar are working as expected)
  • I verified all code is DRY (the PR doesn't include any logic written more than once, with the exception of tests)
  • I verified any variables that can be defined as constants (ie. in CONST.js or at the top of the file that uses the constant) are defined as such
  • I verified that if a function's arguments changed that all usages have also been updated correctly
  • If any new file was added I verified that:
    • The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
  • If a new CSS style is added I verified that:
    • A similar style doesn't already exist
    • The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG))
  • If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
  • If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
  • If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
  • If the PR modifies a component or page that can be accessed by a direct deeplink, I verified that the code functions as expected when the deeplink is used - from a logged in and logged out account.
  • If the PR modifies the UI (e.g. new buttons, new UI components, changing the padding/spacing/sizing, moving components, etc) or modifies the form input styles:
    • I verified that all the inputs inside a form are aligned with each other.
    • I added Design label and/or tagged @Expensify/design so the design team can review the changes.
  • If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
  • If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.

Screenshots/Videos

Android: Native

N/A

Android: mWeb Chrome

N/A

iOS: Native

N/A

iOS: mWeb Safari

N/A

MacOS: Chrome / Safari
web-rhp.mov
web-context-menu.mov
MacOS: Desktop
desktop-rhp.mov
desktop-context-menu.mov

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LGTM, left one small comment 🛸

import useWindowDimensions from '@hooks/useWindowDimensions';
import type FocusTrapProps from './FocusTrapProps';

let activeRouteName = '';
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@Skalakid Skalakid May 14, 2024

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Do we need activeRouteName variable outside the component? Can't we just use, for example, useRef?

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This variable is shared between instances of FocusTrap component

@ikevin127
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🚨 Hey, just wanted to let you know that I found an issue while testing PR #42772, after PR author merged latest main.

The issue came from the latest main which leads me to think that it might be caused by this PR which was just merged but not yet deployed to staging / prod. To confirm this I checked-out to a few commits before this one ( e.g. c82dafdb) and the issue is not reproducible there.

  • All popups have the first option highlighted when opened

    Video
    web.mov

cc @adamgrzybowski @roryabraham

@tsa321
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tsa321 commented Jun 14, 2024

Just my opinion:
There is already a focus trap in react-native-web modal: https://github.com/necolas/react-native-web/blob/master/packages/react-native-web/src/exports/Modal/ModalFocusTrap.js

Do we need to put additional focustrap in baseModal?
CMIW

@OSBotify
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🚀 Deployed to production by https://github.com/mountiny in version: 1.4.83-3 🚀

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

@dangrous
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Pinged in Slack too, but this might be causing an issue with the debug modal - #43897 . Let me know what you think!

@jjcoffee
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Coming from #43664, there was a regression caused by the focus trap that resulted in the sign in page scrolling to bottom when signing in from a public room.

focusTrapOptions={{
trapStack: sharedTrapStack,
allowOutsideClick: true,
fallbackFocus: document.body,
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We should disable the initial focus to prevent default selection on popup menus.#43659

@hoangzinh
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hoangzinh commented Aug 2, 2024

Hi team. Coming from #43713, there was an issue that the workspace switcher has a blue border after login in mWeb.

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Coming from #45629:
There's one more case of modal (EmojiPicker) to be wrapped with FocusTrapForModal.

@rayane-djouah
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This PR caused #43719, a detailed RCA can be found in this proposal: #43719 (comment)

/>
</RootStack.Navigator>
</View>
<FocusTrapForScreens>
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@adamgrzybowski Why do we have FocusTrapForScreens here if each child screen already has a screenwrapper containing it?

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@wildan-m hello, I also worked on this PR so I can answer. The reason is that FullScreenNavigator can display two screens, for example:
image
In this case we have to disable FocusTrap which is rendered by ScreenWrapper. Otherwise we would have trap active only in red screen or blue screen. FocusTrap over navigator allows us to trap focus in both visible screens.
You can see screens with disabled focus trap in src/components/FocusTrap/WIDE_LAYOUT_INACTIVE_SCREENS.ts file.

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btw are you working on something connected? Maybe we should put the comment in that place

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@jnowakow Thank you for your response. Although I haven't encountered any actual issues yet, I noticed that on smaller screens, when the trap is disabled in the screen wrapper (for some reason), it still traps the focus because the parent container FullScreenNavigator's focus trap exists.

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Okey, so probably it's desired behaviour

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