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Bug-1993037 addition of splitViewId to the tabs API#43284

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rebloor wants to merge 3 commits intomdn:mainfrom
rebloor:Bug-1993037-splitViewId-in-tabs-API
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Bug-1993037 addition of splitViewId to the tabs API#43284
rebloor wants to merge 3 commits intomdn:mainfrom
rebloor:Bug-1993037-splitViewId-in-tabs-API

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@rebloor
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@rebloor rebloor commented Feb 27, 2026

Description

Adds documentatiop for Bug 1993037 Expose splitViewId in tabs extension API comprising:

  • the SPLIT_VIEW_ID_NONE property.
  • addition of splitViewId to tabs.Tab, tabs.onUpdated, and tabs.query().
  • behavior of split views when their tabs are included in tabs.moveand tabs.remove.
  • release notes.

Related issues and pull requests

Related BCD changes in mdn/browser-compat-data#29128

@rebloor rebloor requested a review from Rob--W February 27, 2026 16:47
@rebloor rebloor self-assigned this Feb 27, 2026
@rebloor rebloor requested review from a team as code owners February 27, 2026 16:47
@rebloor rebloor requested review from dipikabh and removed request for a team February 27, 2026 16:48
@rebloor rebloor added the Content:WebExt WebExtensions docs label Feb 27, 2026
@github-actions github-actions bot added Content:Firefox Content in the Mozilla/Firefox subtree size/m [PR only] 51-500 LoC changed labels Feb 27, 2026
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Rob--W commented Mar 3, 2026

Premature, but FYI: end user documentation will be written in https://bugzilla.mozilla.org/show_bug.cgi?id=2020555 . Once that is ready, we can link to that to explain what split view is. This can be done in this PR or as a follow-up.

@github-actions github-actions bot added the merge conflicts 🚧 [PR only] label Mar 10, 2026
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This pull request has merge conflicts that must be resolved before it can be merged.

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Content:Firefox Content in the Mozilla/Firefox subtree Content:WebExt WebExtensions docs merge conflicts 🚧 [PR only] size/m [PR only] 51-500 LoC changed

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