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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
import { GeckoViewActorChild } from "resource://gre/modules/GeckoViewActorChild.sys.mjs";
import { GeckoViewUtils } from "resource://gre/modules/GeckoViewUtils.sys.mjs";
const { debug } = GeckoViewUtils.initLogging(
"GeckoViewPictureInPictureSource[C]"
);
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
ContentDOMReference: "resource://gre/modules/ContentDOMReference.sys.mjs",
});
export class GeckoViewPictureInPictureSourceChild extends GeckoViewActorChild {
receiveMessage(msg) {
switch (msg.name) {
case "GeckoView:PictureInPicture:FindVideo":
return this.findPlayingVideo();
}
return null;
}
/**
* The first video this frame is playing, in document order, or null if it is
* playing none.
*
* @returns {?{videoRef: object}}
*/
findPlayingVideo() {
const doc = this.document;
if (!doc) {
return null;
}
// A video with no dimensions has no frames to clone yet.
const video = [...doc.querySelectorAll("video")].find(
v => !v.paused && v.videoWidth > 0 && v.videoHeight > 0
);
if (!video) {
return null;
}
debug`findPlayingVideo: bcId=${this.browsingContext.id} ${video.videoWidth}x${video.videoHeight}`;
return { videoRef: lazy.ContentDOMReference.get(video) };
}
}