Support column-span for columns on <fieldset>
Categories
(Core :: Layout: Columns, enhancement, P3)
Tracking
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| Tracking | Status | |
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| firefox68 | --- | fixed |
People
(Reporter: TYLin, Assigned: TYLin)
References
(Blocks 1 open bug)
Details
Attachments
(2 files)
+++ This bug was initially created as a clone of Bug #1489295 +++
Bug 1421105 implements "column-span" for block and inline frames only. <fieldset> are still using InitAndWrapInColumnSetFrameIfNeeded() to construct column hierarchy, which is unaware of "column-span".
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Assignee | |
Comment 1•5 years ago
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Per spec, "Note: Column boxes do not become the containing block for
elements with position: fixed or position: absolute. The containing
block is the multicol container, it being the principal box."
https://drafts.csswg.org/css-multicol-1/#the-multi-column-model
contentFrame and contentFrameTop are different only if fieldset has
multicol layout. In that case, contentFrameTop is nsColumnSetFrame (or
ColumnSetWrapperFrame after applying Part 2 with
layout.css.column-span.enabled=true).
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Assignee | |
Comment 2•5 years ago
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Depends on D23617
Pushed by aethanyc@gmail.com: https://hg.mozilla.org/integration/autoland/rev/1070ea9495a0 Part 1 - In fieldset, make absolute positioned frames relative to multicol container, not the column content frames. r=mats https://hg.mozilla.org/integration/autoland/rev/803ea92e7423 Part 2 - Implement column-span:all for fieldset elements. r=dbaron
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Comment 5•5 years ago
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| bugherder | ||
https://hg.mozilla.org/mozilla-central/rev/1070ea9495a0
https://hg.mozilla.org/mozilla-central/rev/803ea92e7423
Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/16002 for changes under testing/web-platform/tests
Upstream PR was closed without merging
Description
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