[FlexNG] Skip relayout boundary optimisation if a flex-item.

Before this patch we'd consider a text-control a relayout root. If this was also a NG flex-item it wouldn't have enough information to correctly layout, (it wouldn't know what size to stretch to for example). This patch disables the relayout boundary optimisation for text-controls and SVG roots - which are also flex-items. Bug: 1082447 Change-Id: I0e3b2186301fbf9488c0723c525a5e45e2ca80df Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2207611 Commit-Queue: Ian Kilpatrick <[email protected]> Reviewed-by: Morten Stenshorne <[email protected]> Cr-Commit-Position: refs/heads/master@{#769810}
web-platform-tests · May 18, 2020 · adae164 · adae164
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commit adae164
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/css/css-flexbox/relayout-input.html b/css/css-flexbox/relayout-input.html
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+<!DOCTYPE html>
+<link rel="help" href="https://crbug.com/1082447" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+<div style="display: flex; width: 100px;">
+  <input id="target" style="position: relative; height: 20px; flex: 1; width: 0px;" data-expected-width="100" />
+</div>
+<script>
+test(function() {
+  document.body.offsetTop;
+  document.getElementById('target').value = 'text';
+  checkLayout('#target');
+});
+</script>