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