[w3c/uievents] MouseEvent, WheelEvent, and some algorithms moving to pointer events (PR #411)

From [December 16, 2025 discussion](https://docs.google.com/document/d/1iRFgqtReyomoCwZFEdRUdoW1ManD5t656CVUGJm7Xos/edit?tab=t.0#heading=h.e234kxkb32pk)

This is the "mirror" pull request for https://github.com/w3c/pointerevents/pull/564 .

The following tasks have been completed:

 * [ ] Modified web-platform-tests (link to pull request)

Implementation commitment: N/A

You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/uievents/pull/411

-- Commit Summary --

  * Remove WheelEvent
  * Remove legacy initializer for MouseEvent
  * Remove MouseEvent. Export 'modifier key state' and 'Initialize UIEvent'

-- File Changes --

    M build.py (2)
    M index.bs (6)
    M sections/event-interfaces.txt (20)
    M sections/event-keyboardevent.txt (2)
    D sections/event-mouseevent.txt (2054)
    M sections/event-uievent.txt (2)
    D sections/event-wheelevent.txt (312)
    M sections/external-algorithms.txt (281)
    M sections/glossary.txt (20)
    M sections/legacy-event-initializers.txt (115)

-- Patch Links --

https://github.com/w3c/uievents/pull/411.patch
https://github.com/w3c/uievents/pull/411.diff

-- 
Reply to this email directly or view it on GitHub:
https://github.com/w3c/uievents/pull/411
You are receiving this because you are subscribed to this thread.

Message ID: <w3c/uievents/pull/411@github.com>