third_party/WebKit/Source/core/css/cssom/StylePropertyMap.idl

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// https://drafts.css-houdini.org/css-typed-om/#the-stylepropertymap

callback UpdateFunction = CSSStyleValue (CSSStyleValue oldValue);

[
    Exposed=(Window,PaintWorklet),
    RuntimeEnabled=CSSTypedOM
] interface StylePropertyMap : StylePropertyMapReadOnly {
    [RaisesException, CallWith=ExecutionContext] void append(DOMString property, (CSSStyleValue or DOMString)... values);
    [RaisesException, ImplementedAs=remove] void delete(DOMString property);
    [RaisesException, CallWith=ExecutionContext] void set(DOMString property, (CSSStyleValue or DOMString)... values);
    [RaisesException] void update(DOMString property, UpdateFunction updateFunction);
};