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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "mozilla/ServoElementSnapshot.h"
#include "mozilla/GeckoBindings.h"
#include "mozilla/dom/Element.h"
#include "nsIContentInlines.h"
#include "nsContentUtils.h"
namespace mozilla {
ServoElementSnapshot::ServoElementSnapshot(const Element& aElement)
: mState(0),
mContains(Flags(0)),
mIsTableBorderNonzero(false),
mIsSelectListBox(false),
mClassAttributeChanged(false),
mIdAttributeChanged(false) {
MOZ_COUNT_CTOR(ServoElementSnapshot);
MOZ_ASSERT(NS_IsMainThread());
mIsInChromeDocument = nsContentUtils::IsChromeDoc(aElement.OwnerDoc());
mSupportsLangAttr = aElement.SupportsLangAttr();
}
void ServoElementSnapshot::AddOtherPseudoClassState(const Element& aElement) {
if (HasOtherPseudoClassState()) {
return;
}
mIsTableBorderNonzero = Gecko_IsTableBorderNonzero(&aElement);
mIsSelectListBox = Gecko_IsSelectListBox(&aElement);
mContains |= Flags::OtherPseudoClassState;
}
void ServoElementSnapshot::AddAttrs(const Element& aElement,
int32_t aNameSpaceID, nsAtom* aAttribute) {
if (aNameSpaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::_class) {
if (mClassAttributeChanged) {
return;
}
mClassAttributeChanged = true;
} else if (aAttribute == nsGkAtoms::id) {
if (mIdAttributeChanged) {
return;
}
mIdAttributeChanged = true;
}
}
if (!mChangedAttrNames.Contains(aAttribute)) {
mChangedAttrNames.AppendElement(aAttribute);
}
if (HasAttrs()) {
return;
}
uint32_t attrCount = aElement.GetAttrCount();
mAttrs.SetCapacity(attrCount);
for (uint32_t i = 0; i < attrCount; ++i) {
const BorrowedAttrInfo info = aElement.GetAttrInfoAt(i);
MOZ_ASSERT(info);
mAttrs.AppendElement(AttrArray::InternalAttr{*info.mName, *info.mValue});
}
mContains |= Flags::Attributes;
if (aElement.HasID()) {
mContains |= Flags::Id;
}
if (const nsAttrValue* classValue = aElement.GetClasses()) {
// FIXME(emilio): It's pretty unfortunate that this is only relevant for
// SVG, yet it's a somewhat expensive copy. We should be able to do
// better!
mClass = *classValue;
mContains |= Flags::MaybeClass;
}
}
void ServoElementSnapshot::AddCustomStates(Element& aElement) {
if (mContains & Flags::CustomState) {
return;
}
mCustomStates = aElement.EnsureCustomStates().Clone();
mContains |= Flags::CustomState;
}
} // namespace mozilla