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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
class PictureInPictureVideoWrapper {
setCaptionContainerObserver(video, updateCaptionsFunction) {
let container = document.querySelector(".player-ui-main-wrapper");
if (container) {
updateCaptionsFunction("");
const callback = function (mutationsList, observer) {
let text = container.querySelector(
`.text-track-wrapper:not([style*="display: none"])`
)?.innerText;
if (!text) {
updateCaptionsFunction("");
return;
}
updateCaptionsFunction(text);
};
// immediately invoke the callback function to add subtitles to the PiP window
callback([1], null);
let captionsObserver = new MutationObserver(callback);
captionsObserver.observe(container, {
attributes: false,
childList: true,
subtree: true,
});
}
}
}
this.PictureInPictureVideoWrapper = PictureInPictureVideoWrapper;
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