enhance(embed): explicitly `allow` share features in iframe snippet

Site-screenshots: https://github.com/owid/site-screenshots/compare/iframe-allow
SVG tester: https://github.com/owid/owid-grapher-svgs/compare/iframe-allow

owid / owid-grapher

A platform for creating interactive data visualizations

MIT License

1.37k stars 230 forks source link

This explicitly requests the web-share and clipboard-write permissions in our default iframe snippet.

If they are not set, two of our most-used Share menu interactions ("Share via OS share sheet" and "Copy URL to clipboard") will not work when in an iframe context. Or, well, the clipboard-write permission is currently only required in Chromium browsers, but that's still a vast majority of users.

If these permissions are not granted, we now do a pretty nice feature & permission detection, and will not display the Share menu items which are not working.

owid / owid-grapher

enhance(embed): explicitly `allow` share features in iframe snippet #3577