Bug 249223
| Summary: | preventDefault() doesn't block selection on iOS | ||
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| Product: | WebKit | Reporter: | Pierre Ossman <ossman> |
| Component: | UI Events | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | megan_gardner, thorton, webkit-bug-importer, wenson_hsieh |
| Priority: | P2 | Keywords: | InRadar |
| Version: | Safari 16 | ||
| Hardware: | Unspecified | ||
| OS: | iOS 16 | ||
| See Also: | https://bugs.webkit.org/show_bug.cgi?id=197686 | ||
Pierre Ossman
This issue is specific to Safari on iOS. It doesn't happen in Safari on macOS, nor in other browsers.
We (noVNC) have a canvas where we grab all UI events (keyboard, mouse, touch), pass them on to the remote system, and call preventDefault() to avoid both a local and remote action.
For the most part, this works well, but not for selections on iOS. There are two primary cases we've seen:
* Pressing Cmd+A
* Double-clicking
In these cases, we get a local selection in Safari as well, which means we get a blue overlay annoying the user.
We're trying to work around most of it by using -webkit-user-select, but it is difficult to handle all cases.
| Attachments | ||
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Radar WebKit Bug Importer
<rdar://problem/103556502>