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video.js/sandbox/transient-button.html.example
mister-ben 1afe5049e6
feat: Adds a transient button component (#8629)
## Description
Adds a `TransientButton` component for the types of button that are
shown on top of the video briefly during playback and reappear when
there is user activity. e.g. Unmute buttons, skip intro. It aims is to
be a generic button type to be extended. Some basic styles are provided
but kept light to not complicate customisation.
It's important to insert a transient button before the control bar for
the tab order to make sense.

_Optionally_ takes focus when shown.

## Specific Changes proposed
Adds `TransientButton` component.

## Requirements Checklist
- [x] Feature implemented / Bug fixed
- [ ] If necessary, more likely in a feature request than a bug fix
- [x] Change has been verified in an actual browser (Chrome, Firefox,
IE)
  - [x] Unit Tests updated or fixed
  - [ ] Docs/guides updated
- [x] Example:
https://deploy-preview-8629--videojs-preview.netlify.app/sandbox/transient-button.html
- [x] Has no DOM changes which impact accessiblilty or trigger warnings
(e.g. Chrome issues tab)
  - [x] Has no changes to JSDoc which cause `npm run docs:api` to error
- [ ] Reviewed by Two Core Contributors
2024-07-06 07:40:31 +01:00

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Video.js Sandbox</title>
<link href="../dist/video-js.css" rel="stylesheet" type="text/css" />
<script src="../dist/video.js"></script>
<style>
article {
max-width: 800px;
margin: 0 auto;
}
.vjs-transient-button.unmute-button span::before {
content: "\f104";
font-family: "VideoJS";
vertical-align: middle;
padding-right: 0.3em;
}
</style>
</head>
<body>
<article>
<h1>Transient button demo</h1>
<video-js
id="vid1"
class="vjs-fluid"
controls
muted
preload="auto"
poster="https://vjs.zencdn.net/v/oceans.png"
>
<source src="https://vjs.zencdn.net/v/oceans.mp4" type="video/mp4" />
<source src="https://vjs.zencdn.net/v/oceans.webm" type="video/webm" />
<source src="https://vjs.zencdn.net/v/oceans.ogv" type="video/ogg" />
<track
kind="captions"
src="../docs/examples/shared/example-captions.vtt"
srclang="en"
label="English"
/>
</video-js>
</article>
<p>An unmute transient button will show after playback starts if muted.</p>
<p>
Transient buttons to skip into / credits / recap display at times defined
in a metadata track.
</p>
<script>
const player = videojs("#vid1");
player.ready(function () {
// Adds an unmute button that umutes and goes away when clicked
player.one("playing", function () {
if (this.muted()) {
const unmuteButton = player.addChild(
"TransientButton",
{
controlText: "Unmute",
position: ["top", "left"],
className: "unmute-button",
clickHandler: function () {
this.player().muted(false);
this.dispose();
},
},
player.children().indexOf(player.getChild("ControlBar"))
);
unmuteButton.show();
}
});
// A track that defines skippable parts
const track = player.addRemoteTextTrack({
src:
"data:text/vtt;base64," +
btoa(`WEBVTT
00:01.000 --> 00:10.000
Recap
00:15.000 --> 00:20.000
Intro
00:40.000 --> 00:47.000
Credits
`),
kind: "metadata",
label: "skip_sections",
}).track;
let skipButtons = [];
track.addEventListener("cuechange", function () {
const cue = track.activeCues[0];
if (cue) {
const skipButton = player.addChild(
"TransientButton",
{
controlText: `Skip ${cue.text}`,
position: ["bottom", "right"],
clickHandler: () => {
player.currentTime(cue.endTime);
},
takeFocus: true,
},
player.children().indexOf(player.getChild("ControlBar"))
);
skipButtons.push(skipButton);
skipButton.show();
} else {
while (skipButtons.length > 0) {
skipButtons.shift().dispose();
}
}
});
track.mode = "hidden";
});
</script>
</body>
</html>