# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# Adding a new metric? We have docs for that!
# https://firefox-source-docs.mozilla.org/toolkit/components/glean/user/new_definitions_file.html

---
$schema: moz://mozilla.org/schemas/glean/metrics/2-0-0
$tags:
  - 'Firefox :: Tabbed Browser'

browser.engagement:
  tab_unload_count:
    type: counter
    description: >
      The count of tab unload events by TabUnloader due to a low-memory
      situation.
      This metric was generated to correspond to the Legacy Telemetry
      scalar browser.engagement.tab_unload_count.
    bugs:
      - https://bugzil.la/1715858
    data_reviews:
      - https://bugzil.la/1715858
    notification_emails:
      - dao@mozilla.com
      - rtestard@mozilla.com
    expires: never
    telemetry_mirror: BROWSER_ENGAGEMENT_TAB_UNLOAD_COUNT
    no_lint:
      - COMMON_PREFIX

  tab_reload_count:
    type: counter
    description: >
      The count of tab reload events by the user after unloaded.
      This metric was generated to correspond to the Legacy Telemetry
      scalar browser.engagement.tab_reload_count.
    bugs:
      - https://bugzil.la/1715858
    data_reviews:
      - https://bugzil.la/1715858
    notification_emails:
      - dao@mozilla.com
      - rtestard@mozilla.com
    expires: never
    telemetry_mirror: BROWSER_ENGAGEMENT_TAB_RELOAD_COUNT
    no_lint:
      - COMMON_PREFIX

  tab_explicit_unload:
    type: event
    description: >
      Recorded when the user explicitly unloads tab(s) from memory via
      the tab context menu.
    notification_emails:
      - gstoll@mozilla.com
      - haftandilian@mozilla.com
    bugs:
      - https://bugzil.la/1926390
    data_reviews:
      - https://bugzil.la/1926390
    data_sensitivity:
      - interaction
    extra_keys:
      unload_selected_tab:
        description: whether the currently-selected tab is unloaded
        type: boolean
      all_tabs_unloaded:
        description: whether all tabs in the window were unloaded
        type: boolean
      tabs_unloaded:
        description: The number of tabs unloaded in this operation
        type: quantity
      memory_before:
        description: Memory usage before unloading tabs (in bytes)
        type: quantity
      memory_after:
        description: Memory usage after unloading tabs (in bytes)
        type: quantity
      time_to_unload_in_ms:
        description: Time to unload tabs (in ms)
        type: quantity
    expires: never
    no_lint:
      - COMMON_PREFIX

  tab_unload_to_reload:
    type: timing_distribution
    description: >
      How long (sec) a tab had been unloaded until it was reloaded.

      This metric was generated to correspond to the Legacy Telemetry
      exponential histogram TAB_UNLOAD_TO_RELOAD.
    time_unit: second
    bugs:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1715858
    data_reviews:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1715858
    notification_emails:
      - tkikuchi@mozilla.com
    expires: never
    telemetry_mirror: TAB_UNLOAD_TO_RELOAD
    no_lint:
      - COMMON_PREFIX

browser.ui.interaction:
  all_tabs_panel_dragstart_tab_event_count:
    type: counter
    description: >
      Records a count of how many times a drag event started for a tab
      within the All Tabs panel.
      This metric was generated to correspond to the Legacy Telemetry
      scalar
      browser.ui.interaction.all_tabs_panel_dragstart_tab_event_count.
    bugs:
      - https://bugzil.la/1804722
    data_reviews:
      - https://bugzil.la/1804722
    notification_emails:
      - shong@mozilla.com
      - mconley@mozilla.com
    expires: never
    telemetry_mirror: BROWSER_UI_INTERACTION_ALL_TABS_PANEL_DRAGSTART_TAB_EVENT_COUNT

  all_tabs_panel_entrypoint:
    type: labeled_counter
    description: >
      Records a count of how many times the All Tabs Panel was opened,
      keyed on a string describing the entrypoint.
      This metric was generated to correspond to the Legacy Telemetry
      scalar browser.ui.interaction.all_tabs_panel_entrypoint.
    bugs:
      - https://bugzil.la/1804722
    data_reviews:
      - https://bugzil.la/1804722
    notification_emails:
      - shong@mozilla.com
      - mconley@mozilla.com
    expires: never
    telemetry_mirror: BROWSER_UI_INTERACTION_ALL_TABS_PANEL_ENTRYPOINT

  list_all_tabs_action:
    type: labeled_counter
    description: >
      Records how often users interact with any top-level menu option in the
      "List All Tabs" menu.
    bugs:
      - https://bugzil.la/2001752
    data_reviews:
      - https://bugzil.la/2001752
    data_sensitivity:
      - interaction
    notification_emails:
      - sthompson@mozilla.com
    expires: never
    labels:
      - close_all_duplicates # "Close all duplicate tabs" menu item
      - tabs_from_devices # "Tabs from other devices" menu item
      - search_tabs # "Search tabs" menu item

  tab_movement:
    type: labeled_counter
    description: >
      Records information about user tab movements within the tab strip.
    bugs:
      - https://bugzil.la/1988855
    data_reviews:
      - https://bugzil.la/1988855
    data_sensitivity:
      - interaction
    notification_emails:
      - sthompson@mozilla.com
    expires: never
    labels:
      - not_from_external_app
      - from_external_app_next_to_active_tab
      - from_external_app_tab_strip_end

tabgroup:
  create_group:
    type: event
    description: >
      Recorded when the user creates a new tab group via
      the tab context menu or through drag and drop.
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
    bugs:
      - https://bugzil.la/1938423
      - https://bugzil.la/1954500
    data_reviews:
      - https://bugzil.la/1938423
      - https://bugzil.la/1954500
    data_sensitivity:
      - interaction
    extra_keys:
      source:
        description: The means by which the tab group was created
        type: string
      tabs:
        description: The number of tabs in the group when it was created
        type: quantity
      layout:
        description: The layout of the tab strip when the group was created (either "horizontal" or "vertical")
        type: string
      id:
        description: The ID of the created tab group
        type: string
    expires: never

  reopen:
    type: event
    description: >
      Recorded when a user reopens a saved tab group
    notification_emails:
      - dao@mozilla.com
      - dwalker@mozilla.com
      - jswinarton@mozilla.com
      - dwalker@mozilla.com
    bugs:
      - https://bugzil.la/1938425
    data_reviews:
      - https://bugzil.la/1938425
    extra_keys:
      source:
        description: The surface used to find and recall the saved group
        type: string
      layout:
        description: The tabs layout (horizontal or vertical)
        type: string
      id:
        description: The ID of the tab group. Tab group IDs are derived from their creation timestamps and have no other relationship to any tab group metadata.
        type: string
      type:
        description: Whether the user reopened a saved group or a deleted group.
        type: string
    expires: never

  add_tab:
    type: event
    disabled: true # To be controlled by server knobs during Firefox 138 launch due to expected high volume
    description: >
      Recorded when the user adds one or more ungrouped tabs to an existing tab group
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
      - sthompson@mozilla.com
    bugs:
      - https://bugzil.la/1938424
    data_reviews:
      - https://bugzil.la/1938424
    data_sensitivity:
      - interaction
    extra_keys:
      source:
        description: The system, surface, or control the user used to add the tab(s) to the tab group
        type: string
      tabs:
        description: The number of tabs added to the tab group
        type: quantity
      layout:
        description: The layout of the tab strip when the tabs were added (either "horizontal" or "vertical")
        type: string
      group_type:
        description: The state of the tab group to which the tab(s) are being added ("expanded", "collapsed" or "saved")
        type: string
    expires: never

  active_groups:
    type: labeled_quantity
    description: >
      Records the number of groups present in the tab bar, split by expanded or collapsed.
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
    bugs:
      - https://bugzil.la/1938397
      - https://bugzil.la/1954500
    data_reviews:
      - https://bugzil.la/1938397
      - https://bugzil.la/1954500
    expires: never
    unit: tab groups
    labels:
      - expanded
      - collapsed

  tabs_per_active_group:
    type: labeled_quantity
    description: >
      Records statistics about the number of tabs per active group: max, median, average and min.
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
    bugs:
      - https://bugzil.la/1938397
      - https://bugzil.la/1954500
    data_reviews:
      - https://bugzil.la/1938397
      - https://bugzil.la/1954500
    expires: never
    unit: tabs
    labels:
      - max
      - median
      - average
      - min

  saved_groups:
    type: quantity
    description: >
      Records the number of saved tab groups present in the user's session
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
      - sthompson@mozilla.com
    bugs:
      - https://bugzil.la/1938398
    data_reviews:
      - https://bugzil.la/1938398
    expires: never
    unit: tab groups

  tabs_per_saved_group:
    type: labeled_quantity
    description: >
      Records statistics about the number of tabs per saved tab group: max, median, average and min.
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
      - sthompson@mozilla.com
    bugs:
      - https://bugzil.la/1938398
    data_reviews:
      - https://bugzil.la/1938398
    expires: never
    unit: tabs
    labels:
      - max
      - median
      - average
      - min

  tab_count_in_groups:
    type: labeled_quantity
    description: >
      Records the latest number of tabs in the tab bar, split by being inside a group or outside.
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
    bugs:
      - https://bugzil.la/1938397
      - https://bugzil.la/1954500
    data_reviews:
      - https://bugzil.la/1938397
      - https://bugzil.la/1954500
    expires: never
    unit: tabs
    labels:
      - inside
      - outside

  save:
    type: event
    description: >
      Recorded when the user saves a tab group
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
    bugs:
      - https://bugzil.la/1938426
    data_reviews:
      - https://bugzil.la/1938426
    expires: never
    extra_keys:
      user_triggered:
        description: >
          Whether the user explicitly chose to save the tab group, or the group
          was automatically saved as a result of browser operations (e.g. the
          user closed a window that has open tab groups).
        type: boolean
      id:
        description: The ID of the saved tab group
        type: string

  delete:
    type: event
    description: >
      Recorded when the user deletes a tab group
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
      - sthompson@mozilla.com
    bugs:
      - https://bugzil.la/1938430
    data_reviews:
      - https://bugzil.la/1938430
    data_sensitivity:
      - interaction
    extra_keys:
      source:
        description: The system, surface, or control the user used to delete the tab group
        type: string
      id:
        description: Tab group ID of the tab group being deleted. Tab group IDs are derived from their creation timestamps and have no other relationship to any tab group metadata.
        type: string
    expires: never

  ungroup:
    type: event
    description: >
      Recorded when the user ungroups all tabs of a tab group
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
      - sthompson@mozilla.com
    bugs:
      - https://bugzil.la/1963713
    data_reviews:
      - https://bugzil.la/1963713
    data_sensitivity:
      - interaction
    extra_keys:
      source:
        description: The system, surface, or control the user used to ungroup the tabs of the tab group
        type: string
    expires: never

  tab_interactions:
    type: labeled_counter
    description: >
      Records interactions with tabs related to a group: open, add tab to
      group, duplicate, create a new tab, close a tab, reorder, and remove from
      group
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
      - sthompson@mozilla.com
    bugs:
      - https://bugzil.la/1938405
      - https://bugzil.la/1960360
      - https://bugzil.la/1961161
    data_reviews:
      - https://bugzil.la/1938405
      - https://bugzil.la/1960360
      - https://bugzil.la/1961161
    data_sensitivity:
      - interaction
    labels:
      - activate_expanded
      - activate_collapsed
      - add
      - duplicate
      - new
      - close_tabstrip
      - close_tabmenu
      - close_tab_other
      - reorder
      - remove_same_window
      - remove_other_window
      - remove_new_window
    expires: never

  group_interactions:
    type: labeled_counter
    description: >
      Records interactions with tab groups: expand/collapse; rename, change
      color; save/reopen/delete; ungroup tabs; open from tab menu/recent/
      Awesomebar; move to another window
    notification_emails:
      - dao@mozilla.com
      - jswinarton@mozilla.com
      - sthompson@mozilla.com
    bugs:
      - https://bugzil.la/1938401
      - https://bugzil.la/1971241
    data_reviews:
      - https://bugzil.la/1938401
    data_sensitivity:
      - interaction
    labels:
      - expand
      - collapse
      - rename
      - change_color
      - save
      - reopen
      - open_tabmenu
      - open_recent
      - open_suggest
      - delete
      - ungroup
      - move_window
      - hover_preview
    expires: never


  smart_tab_optin:
    type: event
    description: >
      Recorded when onboards to smart tab grouping through opt-in UI
    notification_emails:
      - rrando@mozilla.com
      - vbaungally@mozilla.com
    bugs:
      - https://bugzil.la/1956073
    data_reviews:
      - https://bugzil.la/1956073
    data_sensitivity:
      - interaction
    extra_keys:
      step:
        description: step and description of opt-in screen interaction
        type: string
    expires: never
    no_lint:
      - COMMON_PREFIX

  smart_tab_topic:
    type: event
    description: >
      Recorded when the user saves a tab group label with the ml topic
      model
    notification_emails:
      - rrando@mozilla.com
      - vbaungally@mozilla.com
    bugs:
      - https://bugzil.la/1949010
      - https://bugzil.la/1961641
    data_reviews:
      - https://bugzil.la/1949010
      - https://bugzil.la/1961641
    data_sensitivity:
      - interaction
    extra_keys:
      action:
        description: >
          whether the user saved or canceled generating a label
        type: string
      tabs_in_group:
        description: >
          number of tabs in the group for which model is generating a
          label
        type: quantity
      ml_label_length:
        description: length of label suggested by model
        type: quantity
      user_label_length:
        description: length of label saved by the user
        type: quantity
      levenshtein_distance:
        description: >
          Levenshtein distance between label suggested by model
          and saved by user
        type: quantity
      model_revision:
        description: topic model version currently running
        type: string
      id:
        description: The ID of the created tab group
        type: string
      label_reason:
        description: Whether the model suggested no label due to low probability or dissimilar tabs
        type: string
      backend:
        description: The backend used for the ML Engine
        type: string
    expires: never
    no_lint:
      - COMMON_PREFIX

  smart_tab_suggest:
    type: event
    description: >
      Recorded when the user saves suggested tabs using the ml
      embedding model
    notification_emails:
      - rrando@mozilla.com
      - vbaungally@mozilla.com
    bugs:
      - https://bugzil.la/1949010
    data_reviews:
      - https://bugzil.la/1949010
    data_sensitivity:
      - interaction
    extra_keys:
      action:
        description: whether the user saved or canceled
        type: string
      tabs_in_window:
        description: number of tabs in current window
        type: quantity
      tabs_in_group:
        description: number of tabs in the current group
        type: quantity
      tabs_suggested:
        description: number of tabs suggested by the ml model
        type: quantity
      tabs_approved:
        description: number of tabs the user saved from the suggestions
        type: quantity
      tabs_removed:
        description: >
          number of tabs the user removed from the
          suggestions
        type: quantity
      model_revision:
        description: embedding model version currently running
        type: string
      id:
        description: The ID of the created tab group
        type: string
      backend:
        description: The backend used for the ML Engine
        type: string
    expires: never
    no_lint:
      - COMMON_PREFIX

  smart_tab:
    type: event
    description: >
      Recorded when any pref cause smart tabs to be enabled / disabled
    notification_emails:
      - rrando@mozilla.com
      - vbaungally@mozilla.com
    bugs:
      - https://bugzil.la/1962228
    data_reviews:
      - https://bugzil.la/1962228
    data_sensitivity:
      - interaction
    extra_keys:
      enabled:
        description: whether the preference was enabled or disabled in any way
        type: boolean
    expires: never
    no_lint:
      - COMMON_PREFIX

  smart_tab_enabled:
    # metrics
    type: boolean
    lifetime: application
    description: >
      Records if the user has smart tab groups enabled
    notification_emails:
      - rrando@mozilla.com
      - vbaungally@mozilla.com
    bugs:
      - https://bugzil.la/1962228
    data_reviews:
      - https://bugzil.la/1962228
    data_sensitivity:
      - interaction
    expires: never
    send_in_pings:
      - metrics
    no_lint:
      - COMMON_PREFIX

browser.tabswitch:
  update:
    type: timing_distribution
    description: >
      Firefox: Time in ms spent updating UI in response to a tab switch

      This metric was generated to correspond to the Legacy Telemetry
      exponential histogram FX_TAB_SWITCH_UPDATE_MS.
    time_unit: millisecond
    bugs:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1489524
    data_reviews:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1489524
    notification_emails:
      - perf-telemetry-alerts@mozilla.com
      - mconley@mozilla.com
    expires: never
    telemetry_mirror: FX_TAB_SWITCH_UPDATE_MS

  total:
    type: timing_distribution
    description: >
      Firefox: Time in ms between tab selection and tab content paint in e10s
      windows

      This metric was generated to correspond to the Legacy Telemetry
      exponential histogram FX_TAB_SWITCH_TOTAL_E10S_MS.
    time_unit: millisecond
    bugs:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1156592
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1489524
    data_reviews:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1156592
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1489524
    notification_emails:
      - mconley@mozilla.com
    expires: never
    telemetry_mirror: FX_TAB_SWITCH_TOTAL_E10S_MS

  spinner_visible:
    type: timing_distribution
    description: >
      Firefox: If the spinner interstitial displays during tab switching,
      records the time in ms the graphic is visible

      This metric was generated to correspond to the Legacy Telemetry
      exponential histogram FX_TAB_SWITCH_SPINNER_VISIBLE_MS.
    time_unit: millisecond
    bugs:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1156592
    data_reviews:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1156592
    notification_emails:
      - mconley@mozilla.com
      - dothayer@mozilla.com
    expires: never
    telemetry_mirror: FX_TAB_SWITCH_SPINNER_VISIBLE_MS

  spinner_visible_trigger:
    type: labeled_counter
    description: >
      Diagnostic probe to aid in categorizing tab switch spinners. Records what
      most recently set the loadTimer to null if a spinner was displayed.

      This metric was generated to correspond to the Legacy Telemetry
      categorical histogram FX_TAB_SWITCH_SPINNER_VISIBLE_TRIGGER.
    labels:
      - none
      - preActions
      - postActions
      - onLoadTimeout
      - onLayersReady
      - onSizeModeOrOcc
      - onEndSwapDocShells
    bugs:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1442068
    data_reviews:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1442068
    notification_emails:
      - dothayer@mozilla.com
    expires: never
    telemetry_mirror: h#FX_TAB_SWITCH_SPINNER_VISIBLE_TRIGGER

browser.tabclose:
  time_anim:
    type: timing_distribution
    description: >
      Firefox: Time taken from the point of closing a tab (with animation), to
      the browser element being removed from the DOM. (ms).

      This metric was generated to correspond to the Legacy Telemetry
      exponential histogram FX_TAB_CLOSE_TIME_ANIM_MS.
    time_unit: millisecond
    bugs:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1340842
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1488952
    data_reviews:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1340842
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1488952
    notification_emails:
      - mconley@mozilla.com
    expires: never
    telemetry_mirror: FX_TAB_CLOSE_TIME_ANIM_MS

  time_no_anim:
    type: timing_distribution
    description: >
      Firefox: Time taken from the point of closing a tab (without animation) to
      the browser element being removed from the DOM. (ms).

      This metric was generated to correspond to the Legacy Telemetry
      exponential histogram FX_TAB_CLOSE_TIME_NO_ANIM_MS.
    time_unit: millisecond
    bugs:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1340842
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1714255
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1730041
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1754640
    data_reviews:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1340842
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1714255
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1730041
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1754640
    notification_emails:
      - mconley@mozilla.com
    expires: never
    telemetry_mirror: FX_TAB_CLOSE_TIME_NO_ANIM_MS

  permit_unload_time:
    type: timing_distribution
    description: >
      Firefox: Time taken to run permitUnload on a browser during tab close to
      see whether or not we're allowed to close the tab (ms).

      This metric was generated to correspond to the Legacy Telemetry
      exponential histogram FX_TAB_CLOSE_PERMIT_UNLOAD_TIME_MS.
    time_unit: millisecond
    bugs:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1340842
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1714255
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1730041
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1754640
    data_reviews:
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1340842
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1714255
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1730041
      - https://bugzilla.mozilla.org/show_bug.cgi?id=1754640
    notification_emails:
      - mconley@mozilla.com
    expires: never
    telemetry_mirror: FX_TAB_CLOSE_PERMIT_UNLOAD_TIME_MS

link.handling:
  open_next_to_active_tab_settings_enabled:
    type: boolean
    lifetime: application
    description: >
      Records if the user has the "Open links from apps next to your active tab"
      feature enabled.
    notification_emails:
      - sthompson@mozilla.com
    bugs:
      - https://bugzil.la/1988855
    data_reviews:
      - https://bugzil.la/1988855
    data_sensitivity:
      - interaction
    expires: never
    no_lint:
      - COMMON_PREFIX
  open_next_to_active_tab_settings_change:
    type: event
    description: >
      This is recorded when the "Open links from apps next to your active tab"
      checkbox in the General > Tabs section of about:preferences is toggled.
    bugs:
      - https://bugzil.la/1988855
    data_reviews:
      - https://bugzil.la/1988855
    data_sensitivity:
      - interaction
    notification_emails:
      - sthompson@mozilla.com
    expires: never
    extra_keys:
      checked:
        description: >
          Whether the checkbox was toggled on or off.
        type: boolean
    no_lint:
      - COMMON_PREFIX
  open_from_external_app:
    type: event
    description: >
      This is recorded when a link is clicked outside of Firefox and this external
      link is then opened inside of Firefox. The "Open links from apps next to
      your active tab" option governs the behavior of where the link will be opened.
    bugs:
      - https://bugzil.la/1988855
    data_reviews:
      - https://bugzil.la/1988855
    data_sensitivity:
      - interaction
    notification_emails:
      - sthompson@mozilla.com
    expires: never
    extra_keys:
      next_to_active_tab:
        description: >
          Whether the link was opened next to the active tab.
        type: boolean
    no_lint:
      - COMMON_PREFIX

splitview:
  uri_count:
    type: labeled_counter
    description: >
      Records how many URIs were loaded on each side of the splitview.
    bugs:
      - https://bugzil.la/2013097
    data_reviews:
      - https://bugzil.la/2013097
    data_sensitivity:
      - interaction
    notification_emails:
      - sfoster@mozilla.com
    expires: never
    labels:
      - "1"  # left side
      - "2"  # right side

  start:
    type: event
    description: >
      Recorded when a user starts a split view.
    bugs:
      - https://bugzil.la/1992744
    data_reviews:
      - https://bugzil.la/1992744
    data_sensitivity:
      - interaction
    notification_emails:
      - kcochrane@mozilla.com
    expires: never
    extra_keys:
      tab_layout:
        description: The layout of the tab strip (horizontal or vertical)
        type: string
      trigger:
        description: The method used to start the split view (menu_add for 1 tab selected, menu_open for 2 tabs selected, alt_click for Alt/Option+clicking another tab)
        type: string
      tabgroup:
        description: The tab group state (none for neither tab in a group, main for primary tab in a group, other for secondary tab in a group, both_same for both tabs in same group, both_different for both tabs in different groups)
        type: string

  end:
    type: event
    description: >
      Recorded when a user terminates a split view.
    bugs:
      - https://bugzil.la/1992744
    data_reviews:
      - https://bugzil.la/1992744
    data_sensitivity:
      - interaction
    notification_emails:
      - kcochrane@mozilla.com
    expires: never
    extra_keys:
      tab_layout:
        description: The layout of the tab strip (horizontal or vertical)
        type: string
      trigger:
        description: The method used to end the split view (menu_separate, icon_separate, icon_close, tab_close, footer_separate, footer_close)
        type: string

  reverse:
    type: event
    description: >
      Recorded when the user reverses tabs in a split view.
    bugs:
      - https://bugzil.la/1992744
    data_reviews:
      - https://bugzil.la/1992744
    data_sensitivity:
      - interaction
    notification_emails:
      - kcochrane@mozilla.com
    expires: never
    extra_keys:
      trigger:
        description: The method used to reverse tabs (icon for split view icon menu, footer for split view footer menu)
        type: string

  resize:
    type: event
    description: >
      Recorded at the end of a resize action in a split view.
    bugs:
      - https://bugzil.la/1992744
    data_reviews:
      - https://bugzil.la/1992744
    data_sensitivity:
      - interaction
    notification_emails:
      - kcochrane@mozilla.com
    expires: never
    extra_keys:
      width:
        description: Rounded percentage of view area width
        type: quantity