Bug 212220 – [css-grid] Grid items shouldn't be created for white spaces.

• Component: CSS
• Status: RESOLVED FIXED

[Carlos Alberto Lopez Perez]

The spec <https://drafts.csswg.org/css-grid/#grid-items> states that child text runs containing only white space should not rendered (just as if its text nodes were display:none)

There is WPT testing this https://wpt.live/css/css-grid/grid-items/whitespace-in-grid-item-001.html (or layout-test imported/w3c/web-platform-tests/css/css-grid/grid-items/whitespace-in-grid-item-001.html )

This test passes both on Chrome and Firefox.

For the related chrome issue see: https://codereview.chromium.org/16888008

[Oriol Brufau]

Created attachment 399967 [details]
Patch

[Manuel Rego Casasnovas]

Comment on attachment 399967 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=399967&action=review

r=me, but please wait for green EWSs before landing.

> Source/WebCore/rendering/updating/RenderTreeUpdater.cpp:432
>      if (parentRenderer.isFlexibleBox() && !parentRenderer.isRenderButton())

Mmm, ok I see the condition for flexbox in this line, usually we have both conditions together.
Not a big deal but maybe we can just join both ifs.

[Oriol Brufau]

Created attachment 399978 [details]
Patch

[Oriol Brufau]

I have joined both conditionals and updated the expectation of simple-line-layout-with-zero-sized-font.html

I worried that this patch could defeat the purpose of that crashtest, but I have tried reverting the patch from bug 164076 and the test doesn't crash anyways.

[Manuel Rego Casasnovas]

Comment on attachment 399978 [details]
Patch

r=me, thanks.

[Oriol Brufau]

Comment on attachment 399978 [details]
Patch

EWS is green now

[EWS]

Committed r262033: <https://trac.webkit.org/changeset/262033>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 399978 [details].

[Radar WebKit Bug Importer]

<rdar://problem/63515126>