[Webkit-unassigned] [Bug 210041] New: Should find touch-action elements inside non-composited iframes

Sun Apr 5 17:04:24 PDT 2020

https://bugs.webkit.org/show_bug.cgi?id=210041

            Bug ID: 210041
           Summary: Should find touch-action elements inside
                    non-composited iframes
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dbates at webkit.org
                CC: bfulgham at webkit.org, koivisto at iki.fi,
                    simon.fraser at apple.com,
                    webkit-bug-importer at group.apple.com, zalan at apple.com
            Blocks: 209888

Consider the following test:

[[
<!DOCTYPE html>
<html>
<body>
<iframe srcdoc="<input style='touch-action: none; width: 256px; height: 100px; border:1px solid black'></div>"></iframe>
</body>
</html>
]]

Then there will be **no** touch action region for the <input> because its containing <iframe> is **not** composited. But we should have found the <input>!

Compare to:

[[
<!DOCTYPE html>
<html>
<body>
<iframe srcdoc="<input style='touch-action:none; width: 256px; height: 300px; border:1px solid black'></div>"></iframe>
</body>
</html>
]]

Then there **will be** a touch action region for the <input> because its containing <iframe> **is** composited.

**Keep in mind that touch-action regions should also be updated an element's touch action dynamically changes inside a non-composited  <iframe>***

Also, keep in mind the fix for this bug should **not** be specific to just frame boundaries, but any non-composited things. Though feel free to keep this bug focused on frames and file more bugs.

Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=209888
[Bug 209888] Track editable elements on screen
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