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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
"use strict";
class PictureInPictureVideoWrapper {
setCaptionContainerObserver(video, updateCaptionsFunction) {
let container = document.querySelector('div[class^="subtitle-container"]');
if (container) {
updateCaptionsFunction("");
const callback = function () {
let textNodeList = container.querySelectorAll("span");
if (!textNodeList.length) {
updateCaptionsFunction("");
return;
}
updateCaptionsFunction(
Array.from(textNodeList, x => x.textContent).join("\n")
);
};
// immediately invoke the callback function to add subtitles to the PiP window
callback();
this.captionsObserver = new MutationObserver(callback);
this.captionsObserver.observe(container, {
childList: true,
subtree: true,
});
}
}
removeCaptionContainerObserver() {
this.captionsObserver?.disconnect();
}
}
this.PictureInPictureVideoWrapper = PictureInPictureVideoWrapper;