Berlin F2F April 2018

See CSS meeting page for logistics.

Agenda

Meeting Minutes

• Part 1: Typed OM
• Part 2: Custom Layouts
• Part 3: Custom Paint, Animation Worklets, Paint API, Typed OM, Worklets

Typed OM

• Approve URL handling/design
  1. overall structure - generic featureless CSSURLValue class, several independent classes for things that urls can represent
  2. Loading and absolutization timing
• Reifying style values - everyone happy with the approach?
• Forwards-compat design choices - like this, or some other method? Or live with the eventual constraints it'll place on CSS design?
• Which string type? - DOMString, USVString, or CSSOMString?
• Which Workers to expose to? - currently all, because why not; should we be more selective and only expose when necessary?

Custom Layout

• DEMO TIME!
• Policy for selecting LWGS?
• Lifetime for passed in arguments to layout, intrinsicSizes
• Lifetime for the instance of the class
• Review the LayoutOptions.sizing parameter
• Naming!
  • Anything name changes while we are at it?
• CSS Compat with writing modes
• Promise vs. Generator design

Custom Paint

• ident vs. custom ident
• JS export vs. registerBlah
• Make paint invalidation non-normative or something?
• callback interface vs. not

Animation Worklet

• Explicit state object replacing old onDestrory callabck
• Implementation status update and plans for origin trial
• Request to move the spec from WICG to WG as FPWD