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Bug 1594986 - Reset subdocument intrinsic size in UnloadObject. r=emilio

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Differential Revision: https://phabricator.services.mozilla.com/D163071
This commit is contained in:
Andreas Farre
2022-11-25 13:36:32 +00:00
parent c96f73038d
commit db1b2b3f75
2 changed files with 34 additions and 0 deletions
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3
dom/base/nsObjectLoadingContent.cpp
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@@ -2023,6 +2023,9 @@ void nsObjectLoadingContent::UnloadObject(bool aResetState) {
// This call should be last as it may re-enter
StopPluginInstance();
mSubdocumentIntrinsicSize.reset();
mSubdocumentIntrinsicRatio.reset();
}
void nsObjectLoadingContent::NotifyStateChanged(ObjectType aOldType,

31
testing/web-platform/tests/html/semantics/embedded-content/the-embed-element/embed-svg-navigation-resets-size.html Normal file
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@@ -0,0 +1,31 @@
<!doctype html>
<meta charset=utf-8>
<title>Intrinsic sizing of SVG embedded via &lt;embed&gt; should disappear on navigation</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<embed id="element" name="embed" src='data:image/svg+xml,
<svg xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
viewBox="0 0 1000 1000"
width="400"
height="400"
font-size="100">
</svg>'></embed>
<script>
promise_test(async () => {
await new Promise(resolve => {
onload = resolve;
});
assert_equals(element.scrollWidth, 400, "The width should be determined by the embedded SVG");
assert_equals(element.scrollHeight, 400, "The height should be determined by the embedded SVG");
await new Promise(resolve => {
element.onload = resolve;
element.src = "about:blank";
});
assert_equals(element.scrollWidth, 300, "The width should be the default");
assert_equals(element.scrollHeight, 150, "The height should be the default");
});
</script>