blob: 635a47ef5fbe401a46dc6d7c1a9ced536350e714 [file] [log] [blame]
// Copyright 2019 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// https://www.w3.org/TR/intersection-observer/#intersection-observer-interface
[Constructor(IntersectionObserverCallback callback, optional IntersectionObserverInit options),
ConstructorCallWith=EnvironmentSettings,
RaisesException=Constructor,
Exposed=Window]
interface IntersectionObserver {
readonly attribute Element? root;
readonly attribute DOMString rootMargin;
// TODO make this be FrozenArray<double> when available
readonly attribute sequence<double> thresholds;
void observe(Element target);
void unobserve(Element target);
void disconnect();
sequence<IntersectionObserverEntry> takeRecords();
};
callback IntersectionObserverCallback = void (sequence<IntersectionObserverEntry> entries, IntersectionObserver observer);