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I don't know about iOS, but on Firefox Desktop, the right-click menu is emulated by the canvas, and it uses the clipboard API to copy it. > If the text wasn't

I don't know about iOS, but on Firefox Desktop, the right-click menu is emulated by the canvas, and it uses the clipboard API to copy it. > If the text wasn't available, it would also completely break any kind of screen reader / accessibility feature so something has to be supporting this at a native-browser level. When using a screen reader, it tells you you press Ctrl+Alt+Z, which loads an iframe containing (only?!) the first paragraph of the text, so it is made available to screen readers independently. I have no idea if this would work for editing though.

azinman2 5y ago
It looks like on Safari on macOS they also hijack right-click menu, but text selection works such that I can go to Edit>Copy and it works. What tells you to press Ctrl+Alt+Z? That's not a great experience for you to interactively edit a document if you have accessibility needs.
- progval 5y ago
  > What tells you to press Ctrl+Alt+Z? Invisible text inserted in the DOM with Javascript (forgive the French, it ignores browser settings and seems to use geolocation): <div id="docs-aria-speakable" class="docs-offscreen-z-index" aria-live="assertive" role="region" aria-atomic="true" aria-hidden="false">Pour activer la compatibilité avec le lecteur d'écran, appuyez sur Ctrl+Alt+Z Pour connaître les raccourcis clavier, appuyez sur Ctrl+barre oblique</div>
  - azinman2 5y ago
    Wonder what happens in a mobile device context, where you can't execute such a shortcut. But that's interesting, especially the class="docs-offscreen-z-index". This to me suggests that they do have shadow elements underneath the canvas to support various functionality. Thanks for the find!