Global App Tabs

From MozillaWiki
Jump to: navigation, search
Please use "Edit with form" above to edit this page.


Global App Tabs
Stage Development
Status In progress
Release target `
Health OK
Status note `


Product manager Asa Dotzler
Directly Responsible Individual Paul O'Shannessy
Lead engineer Paul O'Shannessy
Security lead `
Privacy lead `
Localization lead `
Accessibility lead `
QA lead Vlad Ghetiu (irc: vladg)
UX lead Jennifer Morrow
Product marketing lead `
Operations lead `
Additional members `

Open issues/risks


Stage 1: Definition

1. Feature overview

App Tabs were always meant to be global across windows, but because of release constraints and timing issues, this didn't happen in Firefox 4. We'd like to complete this feature.

This feature falls primarily in the Experience category (from the "Discover, Experience, and Connect" vision statement.)

2. Users & use cases

Users: People who use app tabs

3. Dependencies


4. Requirements



  • Tab groups won't become global
  • App tab UI in panorama
  • Not changing UI (toolbars, notifications, etc)

Stage 2: Design

5. Functional specification


6. User experience design

  • App tabs should appear on every window, and be global
    • Title changed notifications are propagated (and cleared) across all windows
  • If two windows are showing the same app tab, we use our ability to re-parent the tab to the other window to make the transition between the two as seamless as possible.
    • We will not update both windows, e.g. if you type in one window, it won't be updated in the other window until that window is activated.
  • This will also make it harder to accidentally lose app tabs — since they'll be global in every window.
  • It also makes it possible to simplify how we handle app tabs in Panorama quite a bit, both on the UI and implementation side of things.

Stage 3: Planning

7. Implementation plan


8. Reviews

Security review


Privacy review


Localization review




Quality Assurance review


Operations review


Stage 4: Development

9. Implementation

Stage 5: Release

10. Landing criteria

  • It's capable of showing app tabs across all windows (but not popups)
  • Handle having the same app tab open in multiple windows

Feature details

Priority P2
Rank 5
Theme / Goal `
Roadmap Firefox Desktop
Secondary roadmap `
Feature list Desktop
Project `
Engineering team Desktop front-end

Team status notes

  status notes
Products ` `
Engineering ` `
Security ` `
Privacy ` `
Localization ` `
Accessibility ` `
Quality assurance ` `
User experience ` `
Product marketing ` `
Operations ` `

We'll want some documentation about the upgrade path. People may be used to the current behavior of app tabs being per window.