chromium/src/third_party/blink/renderer/core/document_transition/document_transition.idl

// Copyright 2020 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.


// See third_party/blink/renderer/core/document_transition/README.md.
[
    ActiveScriptWrappable,
    Exposed=Window,
    RuntimeEnabled=DocumentTransition
] interface DocumentTransition {
  // - This should only be called after any previous start() calls have resolved.
  // - Rejects any previous unresolved prepare() promises.
  // - Returns a promise that resolves after the transition has been
  //   prepared.
  [CallWith=ScriptState] Promise<void> prepare(optional DocumentTransitionInit params = {});

  // Can only be called after prepare(), during the task during
  // which prepare() most recently resolved.
  // TODO(vmpstr): This should return a promise that resolves when the
  // transition completes.
  void start();
};