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Bug 1363481 - Add the old attribute value as a parameter to Element::AfterSetAttr

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Tag #1375
This commit is contained in:
Matt A. Tobin 2020-04-17 05:26:58 -04:00 • committed by Roy Tam
commit 1f233fa14b
65 changed files with 352 additions and 161 deletions
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12
dom/base/nsStyledElement.cpp
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@ -57,6 +57,7 @@ nsStyledElement::SetInlineStyleDeclaration(DeclarationBlock* aDeclaration,
SetMayHaveStyle();
bool modification = false;
nsAttrValue oldValue;
bool oldValueSet = false;
bool hasListeners = aNotify &&
nsContentUtils::HasMutationListeners(this,
@ -76,6 +77,7 @@ nsStyledElement::SetInlineStyleDeclaration(DeclarationBlock* aDeclaration,
oldValueStr);
if (modification) {
oldValue.SetTo(oldValueStr);
oldValueSet = true;
}
}
else if (aNotify && IsInUncomposedDoc()) {
@ -92,9 +94,9 @@ nsStyledElement::SetInlineStyleDeclaration(DeclarationBlock* aDeclaration,
nsIDocument* document = GetComposedDoc();
mozAutoDocUpdate updateBatch(document, UPDATE_CONTENT_MODEL, aNotify);
return SetAttrAndNotify(kNameSpaceID_None, nsGkAtoms::style, nullptr,
oldValue, attrValue, modType, hasListeners,
aNotify, kDontCallAfterSetAttr, document,
updateBatch);
oldValueSet ? &oldValue : nullptr, attrValue, modType,
hasListeners, aNotify, kDontCallAfterSetAttr,
document, updateBatch);
}
DeclarationBlock*
@ -145,7 +147,9 @@ nsStyledElement::ReparseStyleAttribute(bool aForceInDataDoc)
ParseStyleAttribute(stringValue, attrValue, aForceInDataDoc);
// Don't bother going through SetInlineStyleDeclaration; we don't
// want to fire off mutation events or document notifications anyway
nsresult rv = mAttrsAndChildren.SetAndSwapAttr(nsGkAtoms::style, attrValue);
bool oldValueSet;
nsresult rv = mAttrsAndChildren.SetAndSwapAttr(nsGkAtoms::style, attrValue,
&oldValueSet);
NS_ENSURE_SUCCESS(rv, rv);
}