Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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 "DocumentOrShadowRoot.h"
#include "mozilla/AnimationComparator.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/PointerLockManager.h"
#include "mozilla/PresShell.h"
#include "mozilla/StyleSheet.h"
#include "mozilla/dom/AnimatableBinding.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/dom/ShadowRoot.h"
#include "mozilla/dom/StyleSheetList.h"
#include "nsTHashtable.h"
#include "nsContentUtils.h"
#include "nsFocusManager.h"
#include "nsIFormControl.h"
#include "nsLayoutUtils.h"
#include "nsNameSpaceManager.h"
#include "nsWindowSizes.h"
namespace mozilla::dom {
DocumentOrShadowRoot::DocumentOrShadowRoot(ShadowRoot* aShadowRoot)
: mAsNode(aShadowRoot), mKind(Kind::ShadowRoot) {
MOZ_ASSERT(mAsNode);
}
DocumentOrShadowRoot::DocumentOrShadowRoot(Document* aDoc)
: mAsNode(aDoc), mKind(Kind::Document) {
MOZ_ASSERT(mAsNode);
}
void DocumentOrShadowRoot::AddSizeOfOwnedSheetArrayExcludingThis(
nsWindowSizes& aSizes, const nsTArray<RefPtr<StyleSheet>>& aSheets) const {
size_t n = 0;
n += aSheets.ShallowSizeOfExcludingThis(aSizes.mState.mMallocSizeOf);
for (StyleSheet* sheet : aSheets) {
if (!sheet->GetAssociatedDocumentOrShadowRoot()) {
// Avoid over-reporting shared sheets.
continue;
}
n += sheet->SizeOfIncludingThis(aSizes.mState.mMallocSizeOf);
}
if (mKind == Kind::ShadowRoot) {
aSizes.mLayoutShadowDomStyleSheetsSize += n;
} else {
aSizes.mLayoutStyleSheetsSize += n;
}
}
void DocumentOrShadowRoot::AddSizeOfExcludingThis(nsWindowSizes& aSizes) const {
AddSizeOfOwnedSheetArrayExcludingThis(aSizes, mStyleSheets);
aSizes.mDOMSizes.mDOMOtherSize +=
mIdentifierMap.SizeOfExcludingThis(aSizes.mState.mMallocSizeOf);
}
DocumentOrShadowRoot::~DocumentOrShadowRoot() {
for (StyleSheet* sheet : mStyleSheets) {
sheet->ClearAssociatedDocumentOrShadowRoot();
}
}
StyleSheetList* DocumentOrShadowRoot::StyleSheets() {
if (!mDOMStyleSheets) {
mDOMStyleSheets = new StyleSheetList(*this);
}
return mDOMStyleSheets;
}
void DocumentOrShadowRoot::InsertSheetAt(size_t aIndex, StyleSheet& aSheet) {
aSheet.SetAssociatedDocumentOrShadowRoot(this);
mStyleSheets.InsertElementAt(aIndex, &aSheet);
}
void DocumentOrShadowRoot::RemoveStyleSheet(StyleSheet& aSheet) {
auto index = mStyleSheets.IndexOf(&aSheet);
if (index == mStyleSheets.NoIndex) {
// We should only hit this case if we are unlinking
// in which case mStyleSheets should be cleared.
MOZ_ASSERT(mKind != Kind::Document ||
AsNode().AsDocument()->InUnlinkOrDeletion());
MOZ_ASSERT(mStyleSheets.IsEmpty());
return;
}
RefPtr<StyleSheet> sheet = std::move(mStyleSheets[index]);
mStyleSheets.RemoveElementAt(index);
RemoveSheetFromStylesIfApplicable(*sheet);
sheet->ClearAssociatedDocumentOrShadowRoot();
AsNode().OwnerDoc()->PostStyleSheetRemovedEvent(aSheet);
}
void DocumentOrShadowRoot::RemoveSheetFromStylesIfApplicable(
StyleSheet& aSheet) {
if (!aSheet.IsApplicable()) {
return;
}
if (mKind == Kind::Document) {
AsNode().AsDocument()->RemoveStyleSheetFromStyleSets(aSheet);
} else {
MOZ_ASSERT(AsNode().IsShadowRoot());
static_cast<ShadowRoot&>(AsNode()).RemoveSheetFromStyles(aSheet);
}
}
void DocumentOrShadowRoot::OnSetAdoptedStyleSheets(StyleSheet& aSheet,
uint32_t aIndex,
ErrorResult& aRv) {
Document& doc = *AsNode().OwnerDoc();
// 1. If value’s constructed flag is not set, or its constructor document is
// not equal to this DocumentOrShadowRoot's node document, throw a
// "NotAllowedError" DOMException.
if (!aSheet.IsConstructed()) {
return aRv.ThrowNotAllowedError(
"Adopted style sheet must be created through the Constructable "
"StyleSheets API");
}
if (!aSheet.ConstructorDocumentMatches(doc)) {
return aRv.ThrowNotAllowedError(
"Adopted style sheet's constructor document must match the "
"document or shadow root's node document");
}
auto* shadow = ShadowRoot::FromNode(AsNode());
MOZ_ASSERT((mKind == Kind::ShadowRoot) == !!shadow);
auto existingIndex = mAdoptedStyleSheets.LastIndexOf(&aSheet);
// Ensure it's in the backing array at the right index.
mAdoptedStyleSheets.InsertElementAt(aIndex, &aSheet);
if (existingIndex == mAdoptedStyleSheets.NoIndex) {
// common case: we're not already adopting this sheet.
aSheet.AddAdopter(*this);
} else if (existingIndex < aIndex) {
// We're inserting an already-adopted stylesheet in a later position, so
// this one should take precedent and we should remove the old one.
RemoveSheetFromStylesIfApplicable(aSheet);
} else {
// The sheet is already at a position later than or equal to the current
// one, and is already adopted by us, we have nothing to do here other than
// adding to the current list.
return;
}
if (aSheet.IsApplicable()) {
if (mKind == Kind::Document) {
doc.AddStyleSheetToStyleSets(aSheet);
} else {
shadow->InsertSheetIntoAuthorData(aIndex, aSheet, mAdoptedStyleSheets);
}
}
}
void DocumentOrShadowRoot::OnDeleteAdoptedStyleSheets(StyleSheet& aSheet,
uint32_t aIndex,
ErrorResult&) {
MOZ_ASSERT(mAdoptedStyleSheets.ElementAt(aIndex) == &aSheet);
mAdoptedStyleSheets.RemoveElementAt(aIndex);
auto existingIndex = mAdoptedStyleSheets.LastIndexOf(&aSheet);
if (existingIndex != mAdoptedStyleSheets.NoIndex && existingIndex >= aIndex) {
// The sheet is still adopted by us and was already later from the one we're
// removing, so nothing to do.
return;
}
RemoveSheetFromStylesIfApplicable(aSheet);
if (existingIndex == mAdoptedStyleSheets.NoIndex) {
// The sheet is no longer adopted by us.
aSheet.RemoveAdopter(*this);
} else if (aSheet.IsApplicable()) {
// We need to re-insert the sheet at the right (pre-existing) index.
nsINode& node = AsNode();
if (mKind == Kind::Document) {
node.AsDocument()->AddStyleSheetToStyleSets(aSheet);
} else {
ShadowRoot::FromNode(node)->InsertSheetIntoAuthorData(
existingIndex, aSheet, mAdoptedStyleSheets);
}
}
}
void DocumentOrShadowRoot::ClearAdoptedStyleSheets() {
auto* shadow = ShadowRoot::FromNode(AsNode());
auto* doc = shadow ? nullptr : AsNode().AsDocument();
MOZ_ASSERT(shadow || doc);
IgnoredErrorResult rv;
while (!mAdoptedStyleSheets.IsEmpty()) {
if (shadow) {
ShadowRoot_Binding::AdoptedStyleSheetsHelpers::RemoveLastElement(shadow,
rv);
} else {
Document_Binding::AdoptedStyleSheetsHelpers::RemoveLastElement(doc, rv);
}
MOZ_DIAGNOSTIC_ASSERT(!rv.Failed(), "Removal doesn't fail");
}
}
void DocumentOrShadowRoot::CloneAdoptedSheetsFrom(
const DocumentOrShadowRoot& aSource) {
if (aSource.mAdoptedStyleSheets.IsEmpty()) {
return;
}
Document& ownerDoc = *AsNode().OwnerDoc();
const Document& sourceDoc = *aSource.AsNode().OwnerDoc();
auto* clonedSheetMap = static_cast<Document::AdoptedStyleSheetCloneCache*>(
sourceDoc.GetProperty(nsGkAtoms::adoptedsheetclones));
MOZ_ASSERT(clonedSheetMap);
// We don't need to care about the reflector (AdoptedStyleSheetsHelpers and
// so) because this is only used for static documents.
for (const StyleSheet* sheet : aSource.mAdoptedStyleSheets) {
RefPtr<StyleSheet> clone = clonedSheetMap->LookupOrInsertWith(
sheet, [&] { return sheet->CloneAdoptedSheet(ownerDoc); });
MOZ_ASSERT(clone);
MOZ_DIAGNOSTIC_ASSERT(clone->ConstructorDocumentMatches(ownerDoc));
ErrorResult rv;
OnSetAdoptedStyleSheets(*clone, mAdoptedStyleSheets.Length(), rv);
MOZ_ASSERT(!rv.Failed());
}
}
Element* DocumentOrShadowRoot::GetElementById(
const nsAString& aElementId) const {
if (MOZ_UNLIKELY(aElementId.IsEmpty())) {
ReportEmptyGetElementByIdArg();
return nullptr;
}
if (IdentifierMapEntry* entry = mIdentifierMap.GetEntry(aElementId)) {
return entry->GetIdElement();
}
return nullptr;
}
Element* DocumentOrShadowRoot::GetElementById(nsAtom* aElementId) const {
if (MOZ_UNLIKELY(aElementId == nsGkAtoms::_empty)) {
ReportEmptyGetElementByIdArg();
return nullptr;
}
if (IdentifierMapEntry* entry = mIdentifierMap.GetEntry(aElementId)) {
return entry->GetIdElement();
}
return nullptr;
}
already_AddRefed<nsContentList> DocumentOrShadowRoot::GetElementsByTagNameNS(
const nsAString& aNamespaceURI, const nsAString& aLocalName) {
ErrorResult rv;
RefPtr<nsContentList> list =
GetElementsByTagNameNS(aNamespaceURI, aLocalName, rv);
if (rv.Failed()) {
return nullptr;
}
return list.forget();
}
already_AddRefed<nsContentList> DocumentOrShadowRoot::GetElementsByTagNameNS(
const nsAString& aNamespaceURI, const nsAString& aLocalName,
ErrorResult& aResult) {
int32_t nameSpaceId = kNameSpaceID_Wildcard;
if (!aNamespaceURI.EqualsLiteral("*")) {
aResult = nsNameSpaceManager::GetInstance()->RegisterNameSpace(
aNamespaceURI, nameSpaceId);
if (aResult.Failed()) {
return nullptr;
}
}
NS_ASSERTION(nameSpaceId != kNameSpaceID_Unknown, "Unexpected namespace ID!");
return NS_GetContentList(&AsNode(), nameSpaceId, aLocalName);
}
already_AddRefed<nsContentList> DocumentOrShadowRoot::GetElementsByClassName(
const nsAString& aClasses) {
return nsContentUtils::GetElementsByClassName(&AsNode(), aClasses);
}
nsINode* DocumentOrShadowRoot::Retarget(nsINode* aNode) const {
for (nsINode* cur = aNode; cur; cur = cur->GetContainingShadowHost()) {
if (cur->SubtreeRoot() == &AsNode()) {
return cur;
}
}
return nullptr;
}
Element* DocumentOrShadowRoot::GetRetargetedFocusedElement() {
auto* content = AsNode().OwnerDoc()->GetUnretargetedFocusedContent();
if (!content) {
return nullptr;
}
if (nsINode* retarget = Retarget(content)) {
return retarget->AsElement();
}
return nullptr;
}
Element* DocumentOrShadowRoot::GetPointerLockElement() {
nsCOMPtr<Element> pointerLockedElement =
PointerLockManager::GetLockedElement();
return Element::FromNodeOrNull(Retarget(pointerLockedElement));
}
Element* DocumentOrShadowRoot::GetFullscreenElement() const {
if (!AsNode().IsInComposedDoc()) {
return nullptr;
}
Element* element = AsNode().OwnerDoc()->GetUnretargetedFullscreenElement();
NS_ASSERTION(!element || element->State().HasState(ElementState::FULLSCREEN),
"Fullscreen element should have fullscreen styles applied");
return Element::FromNodeOrNull(Retarget(element));
}
namespace {
using FrameForPointOption = nsLayoutUtils::FrameForPointOption;
using FrameForPointOptions = nsLayoutUtils::FrameForPointOptions;
// Whether only one node or multiple nodes is requested.
enum class Multiple {
No,
Yes,
};
// Whether we should flush layout or not.
enum class FlushLayout {
No,
Yes,
};
enum class PerformRetargeting {
No,
Yes,
};
template <typename NodeOrElement>
NodeOrElement* CastTo(nsINode*);
template <>
Element* CastTo<Element>(nsINode* aNode) {
return aNode->AsElement();
}
template <>
nsINode* CastTo<nsINode>(nsINode* aNode) {
return aNode;
}
template <typename NodeOrElement>
static void QueryNodesFromRect(DocumentOrShadowRoot& aRoot, const nsRect& aRect,
FrameForPointOptions aOptions,
FlushLayout aShouldFlushLayout,
Multiple aMultiple, ViewportType aViewportType,
PerformRetargeting aPerformRetargeting,
nsTArray<RefPtr<NodeOrElement>>& aNodes) {
static_assert(std::is_same<nsINode, NodeOrElement>::value ||
std::is_same<Element, NodeOrElement>::value,
"Should returning nodes or elements");
constexpr bool returningElements =
std::is_same<Element, NodeOrElement>::value;
const bool retargeting = aPerformRetargeting == PerformRetargeting::Yes;
nsCOMPtr<Document> doc = aRoot.AsNode().OwnerDoc();
// Make sure the layout information we get is up-to-date, and
// ensure we get a root frame (for everything but XUL)
if (aShouldFlushLayout == FlushLayout::Yes) {
doc->FlushPendingNotifications(FlushType::Layout);
}
PresShell* presShell = doc->GetPresShell();
if (!presShell) {
return;
}
nsIFrame* rootFrame = presShell->GetRootFrame();
// XUL docs, unlike HTML, have no frame tree until everything's done loading
if (!rootFrame) {
return; // return null to premature XUL callers as a reminder to wait
}
aOptions.mBits += FrameForPointOption::IgnorePaintSuppression;
aOptions.mBits += FrameForPointOption::IgnoreCrossDoc;
AutoTArray<nsIFrame*, 8> frames;
nsLayoutUtils::GetFramesForArea({rootFrame, aViewportType}, aRect, frames,
aOptions);
for (nsIFrame* frame : frames) {
nsINode* node = doc->GetContentInThisDocument(frame);
while (node && node->IsInNativeAnonymousSubtree()) {
nsIContent* root = node->GetClosestNativeAnonymousSubtreeRoot();
MOZ_ASSERT(root, "content is connected");
MOZ_ASSERT(root->IsRootOfNativeAnonymousSubtree(), "wat");
if (root == &aRoot.AsNode()) {
// If we're in the anonymous subtree root we care about, don't retarget.
break;
}
node = root->GetParentOrShadowHostNode();
}
if (!node) {
continue;
}
if (returningElements && !node->IsElement()) {
// If this helper is called via ElementsFromPoint, we need to make sure
// our frame is an element. Otherwise return whatever the top frame is
// even if it isn't the top-painted element.
// SVG 'text' element's SVGTextFrame doesn't respond to hit-testing, so
// if 'content' is a child of such an element then we need to manually
// defer to the parent here.
if (aMultiple == Multiple::Yes && !frame->IsInSVGTextSubtree()) {
continue;
}
node = node->GetParent();
if (ShadowRoot* shadow = ShadowRoot::FromNodeOrNull(node)) {
node = shadow->Host();
}
}
// XXXsmaug There is plenty of unspec'ed behavior here
if (retargeting) {
node = aRoot.Retarget(node);
}
if (node && node != aNodes.SafeLastElement(nullptr)) {
aNodes.AppendElement(CastTo<NodeOrElement>(node));
if (aMultiple == Multiple::No) {
return;
}
}
}
}
template <typename NodeOrElement>
static void QueryNodesFromPoint(DocumentOrShadowRoot& aRoot, float aX, float aY,
FrameForPointOptions aOptions,
FlushLayout aShouldFlushLayout,
Multiple aMultiple, ViewportType aViewportType,
PerformRetargeting aPerformRetargeting,
nsTArray<RefPtr<NodeOrElement>>& aNodes) {
// As per the spec, we return null if either coord is negative.
if (!aOptions.mBits.contains(FrameForPointOption::IgnoreRootScrollFrame) &&
(aX < 0 || aY < 0)) {
return;
}
nscoord x = nsPresContext::CSSPixelsToAppUnits(aX);
nscoord y = nsPresContext::CSSPixelsToAppUnits(aY);
nsPoint pt(x, y);
QueryNodesFromRect(aRoot, nsRect(pt, nsSize(1, 1)), aOptions,
aShouldFlushLayout, aMultiple, aViewportType,
aPerformRetargeting, aNodes);
}
} // namespace
Element* DocumentOrShadowRoot::ElementFromPoint(float aX, float aY) {
return ElementFromPointHelper(aX, aY, false, true, ViewportType::Layout);
}
void DocumentOrShadowRoot::ElementsFromPoint(
float aX, float aY, nsTArray<RefPtr<Element>>& aElements) {
QueryNodesFromPoint(*this, aX, aY, {}, FlushLayout::Yes, Multiple::Yes,
ViewportType::Layout, PerformRetargeting::Yes, aElements);
}
void DocumentOrShadowRoot::NodesFromPoint(float aX, float aY,
nsTArray<RefPtr<nsINode>>& aNodes) {
QueryNodesFromPoint(*this, aX, aY, {}, FlushLayout::Yes, Multiple::Yes,
ViewportType::Layout, PerformRetargeting::Yes, aNodes);
}
nsINode* DocumentOrShadowRoot::NodeFromPoint(float aX, float aY) {
AutoTArray<RefPtr<nsINode>, 1> nodes;
QueryNodesFromPoint(*this, aX, aY, {}, FlushLayout::Yes, Multiple::No,
ViewportType::Layout, PerformRetargeting::Yes, nodes);
return nodes.SafeElementAt(0);
}
Element* DocumentOrShadowRoot::ElementFromPointHelper(
float aX, float aY, bool aIgnoreRootScrollFrame, bool aFlushLayout,
ViewportType aViewportType) {
EnumSet<FrameForPointOption> options;
if (aIgnoreRootScrollFrame) {
options += FrameForPointOption::IgnoreRootScrollFrame;
}
auto flush = aFlushLayout ? FlushLayout::Yes : FlushLayout::No;
AutoTArray<RefPtr<Element>, 1> elements;
QueryNodesFromPoint(*this, aX, aY, options, flush, Multiple::No,
aViewportType, PerformRetargeting::Yes, elements);
return elements.SafeElementAt(0);
}
void DocumentOrShadowRoot::NodesFromRect(float aX, float aY, float aTopSize,
float aRightSize, float aBottomSize,
float aLeftSize,
bool aIgnoreRootScrollFrame,
bool aFlushLayout, bool aOnlyVisible,
float aVisibleThreshold,
nsTArray<RefPtr<nsINode>>& aReturn) {
// Following the same behavior of elementFromPoint,
// we don't return anything if either coord is negative
if (!aIgnoreRootScrollFrame && (aX < 0 || aY < 0)) {
return;
}
nscoord x = nsPresContext::CSSPixelsToAppUnits(aX - aLeftSize);
nscoord y = nsPresContext::CSSPixelsToAppUnits(aY - aTopSize);
nscoord w = nsPresContext::CSSPixelsToAppUnits(aLeftSize + aRightSize) + 1;
nscoord h = nsPresContext::CSSPixelsToAppUnits(aTopSize + aBottomSize) + 1;
nsRect rect(x, y, w, h);
FrameForPointOptions options;
if (aIgnoreRootScrollFrame) {
options.mBits += FrameForPointOption::IgnoreRootScrollFrame;
}
if (aOnlyVisible) {
options.mBits += FrameForPointOption::OnlyVisible;
options.mVisibleThreshold = aVisibleThreshold;
}
auto flush = aFlushLayout ? FlushLayout::Yes : FlushLayout::No;
QueryNodesFromRect(*this, rect, options, flush, Multiple::Yes,
ViewportType::Layout, PerformRetargeting::No, aReturn);
}
Element* DocumentOrShadowRoot::AddIDTargetObserver(nsAtom* aID,
IDTargetObserver aObserver,
void* aData,
bool aForImage) {
nsDependentAtomString id(aID);
if (!CheckGetElementByIdArg(id)) {
return nullptr;
}
IdentifierMapEntry* entry = mIdentifierMap.PutEntry(aID);
NS_ENSURE_TRUE(entry, nullptr);
entry->AddContentChangeCallback(aObserver, aData, aForImage);
return aForImage ? entry->GetImageIdElement() : entry->GetIdElement();
}
void DocumentOrShadowRoot::RemoveIDTargetObserver(nsAtom* aID,
IDTargetObserver aObserver,
void* aData, bool aForImage) {
nsDependentAtomString id(aID);
if (!CheckGetElementByIdArg(id)) {
return;
}
IdentifierMapEntry* entry = mIdentifierMap.GetEntry(aID);
if (!entry) {
return;
}
entry->RemoveContentChangeCallback(aObserver, aData, aForImage);
}
Element* DocumentOrShadowRoot::LookupImageElement(const nsAString& aId) {
if (aId.IsEmpty()) {
return nullptr;
}
IdentifierMapEntry* entry = mIdentifierMap.GetEntry(aId);
return entry ? entry->GetImageIdElement() : nullptr;
}
void DocumentOrShadowRoot::ReportEmptyGetElementByIdArg() const {
nsContentUtils::ReportEmptyGetElementByIdArg(AsNode().OwnerDoc());
}
void DocumentOrShadowRoot::GetAnimations(
nsTArray<RefPtr<Animation>>& aAnimations) {
// As with Element::GetAnimations we initially flush style here.
// This should ensure that there are no subsequent changes to the tree
// structure while iterating over the children below.
if (Document* doc = AsNode().GetComposedDoc()) {
doc->FlushPendingNotifications(
ChangesToFlush(FlushType::Style, false /* flush animations */));
}
GetAnimationsOptions options;
options.mSubtree = true;
for (RefPtr<nsIContent> child = AsNode().GetFirstChild(); child;
child = child->GetNextSibling()) {
if (RefPtr<Element> element = Element::FromNode(child)) {
nsTArray<RefPtr<Animation>> result;
element->GetAnimationsWithoutFlush(options, result);
aAnimations.AppendElements(std::move(result));
}
}
aAnimations.Sort(AnimationPtrComparator<RefPtr<Animation>>());
}
int32_t DocumentOrShadowRoot::StyleOrderIndexOfSheet(
const StyleSheet& aSheet) const {
if (aSheet.IsConstructed()) {
// NOTE: constructable sheets can have duplicates, so we need to start
// looking from behind.
int32_t index = mAdoptedStyleSheets.LastIndexOf(&aSheet);
return (index < 0) ? index : index + SheetCount();
}
return mStyleSheets.IndexOf(&aSheet);
}
void DocumentOrShadowRoot::TraverseSheetRefInStylesIfApplicable(
StyleSheet& aSheet, nsCycleCollectionTraversalCallback& cb) {
if (!aSheet.IsApplicable()) {
return;
}
if (mKind == Kind::ShadowRoot) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mServoStyles->sheets[i]");
cb.NoteXPCOMChild(&aSheet);
} else if (AsNode().AsDocument()->StyleSetFilled()) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(
cb, "mStyleSet->mRawSet.stylist.stylesheets.<origin>[i]");
cb.NoteXPCOMChild(&aSheet);
}
}
void DocumentOrShadowRoot::TraverseStyleSheets(
nsTArray<RefPtr<StyleSheet>>& aSheets, const char* aEdgeName,
nsCycleCollectionTraversalCallback& cb) {
MOZ_ASSERT(aEdgeName);
MOZ_ASSERT(&aSheets != &mAdoptedStyleSheets);
for (StyleSheet* sheet : aSheets) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, aEdgeName);
cb.NoteXPCOMChild(sheet);
TraverseSheetRefInStylesIfApplicable(*sheet, cb);
}
}
void DocumentOrShadowRoot::Traverse(DocumentOrShadowRoot* tmp,
nsCycleCollectionTraversalCallback& cb) {
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDOMStyleSheets)
tmp->TraverseStyleSheets(tmp->mStyleSheets, "mStyleSheets[i]", cb);
tmp->EnumerateUniqueAdoptedStyleSheetsBackToFront([&](StyleSheet& aSheet) {
tmp->TraverseSheetRefInStylesIfApplicable(aSheet, cb);
});
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAdoptedStyleSheets);
for (auto iter = tmp->mIdentifierMap.Iter(); !iter.Done(); iter.Next()) {
iter.Get()->Traverse(&cb);
}
}
void DocumentOrShadowRoot::UnlinkStyleSheets(
nsTArray<RefPtr<StyleSheet>>& aSheets) {
MOZ_ASSERT(&aSheets != &mAdoptedStyleSheets);
for (StyleSheet* sheet : aSheets) {
sheet->ClearAssociatedDocumentOrShadowRoot();
RemoveSheetFromStylesIfApplicable(*sheet);
}
aSheets.Clear();
}
void DocumentOrShadowRoot::Unlink(DocumentOrShadowRoot* tmp) {
NS_IMPL_CYCLE_COLLECTION_UNLINK(mDOMStyleSheets);
tmp->UnlinkStyleSheets(tmp->mStyleSheets);
tmp->EnumerateUniqueAdoptedStyleSheetsBackToFront([&](StyleSheet& aSheet) {
aSheet.RemoveAdopter(*tmp);
tmp->RemoveSheetFromStylesIfApplicable(aSheet);
});
NS_IMPL_CYCLE_COLLECTION_UNLINK(mAdoptedStyleSheets);
tmp->mIdentifierMap.Clear();
}
} // namespace mozilla::dom