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Bug 1377993 - Make node slots less memory hungry in common cases.

Browse source 
Tag UXP Issue #1344
This commit is contained in:
Gaming4JC 2020-01-04 19:48:30 -05:00 • committed by Roy Tam
commit dd7fa403a8
9 changed files with 203 additions and 178 deletions
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16
dom/base/Element.cpp
View file

@ -1595,7 +1595,7 @@ Element::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
#endif
{
if (aBindingParent) {
nsDOMSlots *slots = DOMSlots();
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
slots->mBindingParent = aBindingParent; // Weak, so no addref happens.
}
@ -1618,7 +1618,7 @@ Element::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
}
ShadowRoot* parentContainingShadow = aParent->GetContainingShadow();
if (parentContainingShadow) {
DOMSlots()->mContainingShadow = parentContainingShadow;
ExtendedDOMSlots()->mContainingShadow = parentContainingShadow;
}
}
@ -2007,7 +2007,7 @@ Element::UnbindFromTree(bool aDeep, bool aNullParent)
}
#endif
nsDOMSlots* slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
if (clearBindingParent) {
slots->mBindingParent = nullptr;
@ -2055,7 +2055,7 @@ Element::UnbindFromTree(bool aDeep, bool aNullParent)
nsICSSDeclaration*
Element::GetSMILOverrideStyle()
{
Element::nsDOMSlots *slots = DOMSlots();
Element::nsExtendedDOMSlots* slots = ExtendedDOMSlots();
if (!slots->mSMILOverrideStyle) {
slots->mSMILOverrideStyle = new nsDOMCSSAttributeDeclaration(this, true);
@ -2067,7 +2067,7 @@ Element::GetSMILOverrideStyle()
DeclarationBlock*
Element::GetSMILOverrideStyleDeclaration()
{
Element::nsDOMSlots *slots = GetExistingDOMSlots();
Element::nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
return slots ? slots->mSMILOverrideStyleDeclaration.get() : nullptr;
}
@ -2075,7 +2075,7 @@ nsresult
Element::SetSMILOverrideStyleDeclaration(DeclarationBlock* aDeclaration,
bool aNotify)
{
Element::nsDOMSlots *slots = DOMSlots();
Element::nsExtendedDOMSlots* slots = ExtendedDOMSlots();
slots->mSMILOverrideStyleDeclaration = aDeclaration;
@ -3988,7 +3988,7 @@ Element::ClearDataset()
nsDataHashtable<nsRefPtrHashKey<DOMIntersectionObserver>, int32_t>*
Element::RegisteredIntersectionObservers()
{
nsDOMSlots* slots = DOMSlots();
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
return &slots->mRegisteredIntersectionObservers;
}
@ -4041,7 +4041,7 @@ Element::UpdateIntersectionObservation(DOMIntersectionObserver* aObserver, int32
void
Element::SetCustomElementData(CustomElementData* aData)
{
nsDOMSlots *slots = DOMSlots();
nsExtendedDOMSlots *slots = ExtendedDOMSlots();
MOZ_ASSERT(!slots->mCustomElementData, "Custom element data may not be changed once set.");
slots->mCustomElementData = aData;
}

4
dom/base/Element.h
View file

@ -398,7 +398,7 @@ public:
*/
inline CustomElementData* GetCustomElementData() const
{
nsDOMSlots *slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
return slots->mCustomElementData;
}
@ -837,7 +837,7 @@ public:
ShadowRoot *FastGetShadowRoot() const
{
nsDOMSlots* slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
return slots ? slots->mShadowRoot.get() : nullptr;
}

151
dom/base/FragmentOrElement.cpp
View file

@ -530,8 +530,7 @@ nsNodeSupportsWeakRefTearoff::GetWeakReference(nsIWeakReference** aInstancePtr)
//----------------------------------------------------------------------
FragmentOrElement::nsDOMSlots::nsDOMSlots()
: nsINode::nsSlots(),
mDataset(nullptr),
mBindingParent(nullptr)
mDataset(nullptr)
{
}
@ -543,84 +542,104 @@ FragmentOrElement::nsDOMSlots::~nsDOMSlots()
}
void
FragmentOrElement::nsDOMSlots::Traverse(nsCycleCollectionTraversalCallback &cb, bool aIsXUL)
FragmentOrElement::nsDOMSlots::Traverse(nsCycleCollectionTraversalCallback &cb)
{
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mStyle");
cb.NoteXPCOMChild(mStyle.get());
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mSMILOverrideStyle");
cb.NoteXPCOMChild(mSMILOverrideStyle.get());
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mAttributeMap");
cb.NoteXPCOMChild(mAttributeMap.get());
if (aIsXUL) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mControllers");
cb.NoteXPCOMChild(mControllers);
}
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mXBLBinding");
cb.NoteNativeChild(mXBLBinding, NS_CYCLE_COLLECTION_PARTICIPANT(nsXBLBinding));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mXBLInsertionParent");
cb.NoteXPCOMChild(mXBLInsertionParent.get());
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mShadowRoot");
cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIContent*, mShadowRoot));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mContainingShadow");
cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIContent*, mContainingShadow));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mChildrenList");
cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIDOMNodeList*, mChildrenList));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mLabelsList");
cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIDOMNodeList*, mLabelsList));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mClassList");
cb.NoteXPCOMChild(mClassList.get());
if (mCustomElementData) {
for (uint32_t i = 0; i < mCustomElementData->mCallbackQueue.Length(); i++) {
mCustomElementData->mCallbackQueue[i]->Traverse(cb);
if (!mExtendedSlots) {
return;
}
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mSMILOverrideStyle");
cb.NoteXPCOMChild(mExtendedSlots->mSMILOverrideStyle.get());
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mControllers");
cb.NoteXPCOMChild(mExtendedSlots->mControllers);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mLabelsList");
cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIDOMNodeList*,mExtendedSlots-> mLabelsList));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mShadowRoot");
cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIContent*, mExtendedSlots->mShadowRoot));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mContainingShadow");
cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIContent*, mExtendedSlots->mContainingShadow));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mXBLBinding");
cb.NoteNativeChild(mExtendedSlots->mXBLBinding,
NS_CYCLE_COLLECTION_PARTICIPANT(nsXBLBinding));
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mXBLInsertionParent");
cb.NoteXPCOMChild(mExtendedSlots->mXBLInsertionParent.get());
if (mExtendedSlots->mCustomElementData) {
for (uint32_t i = 0;
i < mExtendedSlots->mCustomElementData->mCallbackQueue.Length(); i++) {
mExtendedSlots->mCustomElementData->mCallbackQueue[i]->Traverse(cb);
}
}
for (auto iter = mRegisteredIntersectionObservers.Iter(); !iter.Done(); iter.Next()) {
for (auto iter = mExtendedSlots->mRegisteredIntersectionObservers.Iter();
!iter.Done(); iter.Next()) {
DOMIntersectionObserver* observer = iter.Key();
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mRegisteredIntersectionObservers[i]");
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb,
"mExtendedSlots->mRegisteredIntersectionObservers[i]");
cb.NoteXPCOMChild(observer);
}
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mFrameLoaderOrOpener");
cb.NoteXPCOMChild(mExtendedSlots->mFrameLoaderOrOpener);
}
void
FragmentOrElement::nsDOMSlots::Unlink(bool aIsXUL)
FragmentOrElement::nsDOMSlots::Unlink()
{
mStyle = nullptr;
mSMILOverrideStyle = nullptr;
if (mAttributeMap) {
mAttributeMap->DropReference();
mAttributeMap = nullptr;
}
if (aIsXUL)
NS_IF_RELEASE(mControllers);
MOZ_ASSERT(!mXBLBinding);
mXBLInsertionParent = nullptr;
mShadowRoot = nullptr;
mContainingShadow = nullptr;
mChildrenList = nullptr;
mLabelsList = nullptr;
mCustomElementData = nullptr;
mClassList = nullptr;
mRegisteredIntersectionObservers.Clear();
if (!mExtendedSlots) {
return;
}
mExtendedSlots->mSMILOverrideStyle = nullptr;
mExtendedSlots->mControllers = nullptr;
mExtendedSlots->mLabelsList = nullptr;
mExtendedSlots->mShadowRoot = nullptr;
mExtendedSlots->mContainingShadow = nullptr;
MOZ_ASSERT(!(mExtendedSlots->mXBLBinding));
mExtendedSlots->mXBLInsertionParent = nullptr;
mExtendedSlots->mCustomElementData = nullptr;
mExtendedSlots->mRegisteredIntersectionObservers.Clear();
nsCOMPtr<nsIFrameLoader> frameLoader =
do_QueryInterface(mExtendedSlots->mFrameLoaderOrOpener);
if (frameLoader) {
static_cast<nsFrameLoader*>(frameLoader.get())->Destroy();
}
mExtendedSlots->mFrameLoaderOrOpener = nullptr;
}
size_t
FragmentOrElement::nsDOMSlots::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
if (mExtendedSlots) {
n += aMallocSizeOf(mExtendedSlots.get());
}
if (mAttributeMap) {
n += mAttributeMap->SizeOfIncludingThis(aMallocSizeOf);
@ -641,6 +660,19 @@ FragmentOrElement::nsDOMSlots::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) c
return n;
}
FragmentOrElement::nsExtendedDOMSlots::nsExtendedDOMSlots()
: mBindingParent(nullptr)
{
}
FragmentOrElement::nsExtendedDOMSlots::~nsExtendedDOMSlots()
{
nsCOMPtr<nsIFrameLoader> frameLoader = do_QueryInterface(mFrameLoaderOrOpener);
if (frameLoader) {
static_cast<nsFrameLoader*>(frameLoader.get())->Destroy();
}
}
FragmentOrElement::FragmentOrElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: nsIContent(aNodeInfo)
{
@ -962,7 +994,7 @@ FragmentOrElement::IsLink(nsIURI** aURI) const
nsIContent*
FragmentOrElement::GetBindingParent() const
{
nsDOMSlots *slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
return slots->mBindingParent;
@ -974,7 +1006,7 @@ nsXBLBinding*
FragmentOrElement::GetXBLBinding() const
{
if (HasFlag(NODE_MAY_BE_IN_BINDING_MNGR)) {
nsDOMSlots *slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
return slots->mXBLBinding;
}
@ -1009,11 +1041,11 @@ FragmentOrElement::SetXBLBinding(nsXBLBinding* aBinding,
if (aBinding) {
SetFlags(NODE_MAY_BE_IN_BINDING_MNGR);
nsDOMSlots *slots = DOMSlots();
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
slots->mXBLBinding = aBinding;
bindingManager->AddBoundContent(this);
} else {
nsDOMSlots *slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
slots->mXBLBinding = nullptr;
}
@ -1028,7 +1060,7 @@ nsIContent*
FragmentOrElement::GetXBLInsertionParent() const
{
if (HasFlag(NODE_MAY_BE_IN_BINDING_MNGR)) {
nsDOMSlots *slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
return slots->mXBLInsertionParent;
}
@ -1040,7 +1072,7 @@ FragmentOrElement::GetXBLInsertionParent() const
ShadowRoot*
FragmentOrElement::GetContainingShadow() const
{
nsDOMSlots *slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
return slots->mContainingShadow;
}
@ -1050,21 +1082,21 @@ FragmentOrElement::GetContainingShadow() const
void
FragmentOrElement::SetShadowRoot(ShadowRoot* aShadowRoot)
{
nsDOMSlots *slots = DOMSlots();
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
slots->mShadowRoot = aShadowRoot;
}
nsTArray<nsIContent*>&
FragmentOrElement::DestInsertionPoints()
{
nsDOMSlots *slots = DOMSlots();
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
return slots->mDestInsertionPoints;
}
nsTArray<nsIContent*>*
FragmentOrElement::GetExistingDestInsertionPoints() const
{
nsDOMSlots *slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
return &slots->mDestInsertionPoints;
}
@ -1075,11 +1107,11 @@ void
FragmentOrElement::SetXBLInsertionParent(nsIContent* aContent)
{
if (aContent) {
nsDOMSlots *slots = DOMSlots();
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
SetFlags(NODE_MAY_BE_IN_BINDING_MNGR);
slots->mXBLInsertionParent = aContent;
} else {
nsDOMSlots *slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
slots->mXBLInsertionParent = nullptr;
}
@ -1348,14 +1380,15 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(FragmentOrElement)
{
nsDOMSlots *slots = tmp->GetExistingDOMSlots();
if (slots) {
if (tmp->IsElement()) {
if (slots->mExtendedSlots && tmp->IsElement()) {
Element* elem = tmp->AsElement();
for (auto iter = slots->mRegisteredIntersectionObservers.Iter(); !iter.Done(); iter.Next()) {
for (auto iter = slots->mExtendedSlots->mRegisteredIntersectionObservers.Iter();
!iter.Done(); iter.Next()) {
DOMIntersectionObserver* observer = iter.Key();
observer->UnlinkTarget(*elem);
}
}
slots->Unlink(tmp->IsXULElement());
slots->Unlink();
}
}
@ -1920,7 +1953,7 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(FragmentOrElement)
{
nsDOMSlots *slots = tmp->GetExistingDOMSlots();
if (slots) {
slots->Traverse(cb, tmp->IsXULElement());
slots->Traverse(cb);
}
}
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

128
dom/base/FragmentOrElement.h
View file

@ -15,6 +15,7 @@
#include "mozilla/Attributes.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/UniquePtr.h"
#include "nsAttrAndChildArray.h" // member
#include "nsCycleCollectionParticipant.h" // NS_DECL_CYCLE_*
#include "nsIContent.h" // base class
@ -239,8 +240,6 @@ protected:
nsresult CopyInnerTo(FragmentOrElement* aDest);
public:
// Because of a bug in MS C++ compiler nsDOMSlots must be declared public,
// otherwise nsXULElement::nsXULSlots doesn't compile.
/**
* There are a set of DOM- and scripting-specific instance variables
* that may only be instantiated when a content object is accessed
@ -249,29 +248,13 @@ public:
* in a side structure that's only allocated when the content is
* accessed through the DOM.
*/
class nsDOMSlots : public nsINode::nsSlots
class nsExtendedDOMSlots
{
public:
nsDOMSlots();
virtual ~nsDOMSlots();
nsExtendedDOMSlots();
void Traverse(nsCycleCollectionTraversalCallback &cb, bool aIsXUL);
void Unlink(bool aIsXUL);
size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
/**
* The .style attribute (an interface that forwards to the actual
* style rules)
* @see nsGenericHTMLElement::GetStyle
*/
nsCOMPtr<nsICSSDeclaration> mStyle;
/**
* The .dataset attribute.
* @see nsGenericHTMLElement::GetDataset
*/
nsDOMStringMap* mDataset; // [Weak]
~nsExtendedDOMSlots();
/**
* SMIL Overridde style rules (for SMIL animation of CSS properties)
@ -285,35 +268,17 @@ public:
RefPtr<mozilla::DeclarationBlock> mSMILOverrideStyleDeclaration;
/**
* An object implementing nsIDOMMozNamedAttrMap for this content (attributes)
* @see FragmentOrElement::GetAttributes
*/
RefPtr<nsDOMAttributeMap> mAttributeMap;
union {
/**
* The nearest enclosing content node with a binding that created us.
* @see FragmentOrElement::GetBindingParent
*/
nsIContent* mBindingParent; // [Weak]
/**
* The controllers of the XUL Element.
*/
nsIControllers* mControllers; // [OWNER]
};
* The nearest enclosing content node with a binding that created us.
* @see FragmentOrElement::GetBindingParent
*/
nsIContent* mBindingParent; // [Weak]
/**
* An object implementing the .children property for this element.
*/
RefPtr<nsContentList> mChildrenList;
* The controllers of the XUL Element.
*/
nsCOMPtr<nsIControllers> mControllers;
/**
* An object implementing the .classList property for this element.
*/
RefPtr<nsDOMTokenList> mClassList;
/*
* An object implementing the .labels property for this element.
*/
RefPtr<nsLabelsNodeList> mLabelsList;
@ -354,6 +319,55 @@ public:
*/
nsDataHashtable<nsRefPtrHashKey<DOMIntersectionObserver>, int32_t>
mRegisteredIntersectionObservers;
/**
* For XUL to hold either frameloader or opener.
*/
nsCOMPtr<nsISupports> mFrameLoaderOrOpener;
};
class nsDOMSlots : public nsINode::nsSlots
{
public:
nsDOMSlots();
virtual ~nsDOMSlots();
void Traverse(nsCycleCollectionTraversalCallback &cb);
void Unlink();
size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
/**
* The .style attribute (an interface that forwards to the actual
* style rules)
* @see nsGenericHTMLElement::GetStyle
*/
nsCOMPtr<nsICSSDeclaration> mStyle;
/**
* The .dataset attribute.
* @see nsGenericHTMLElement::GetDataset
*/
nsDOMStringMap* mDataset; // [Weak]
/**
* An object implementing nsIDOMMozNamedAttrMap for this content (attributes)
* @see FragmentOrElement::GetAttributes
*/
RefPtr<nsDOMAttributeMap> mAttributeMap;
/**
* An object implementing the .children property for this element.
*/
RefPtr<nsContentList> mChildrenList;
/**
* An object implementing the .classList property for this element.
*/
RefPtr<nsDOMTokenList> mClassList;
mozilla::UniquePtr<nsExtendedDOMSlots> mExtendedSlots;
};
protected:
@ -373,6 +387,26 @@ protected:
return static_cast<nsDOMSlots*>(GetExistingSlots());
}
nsExtendedDOMSlots* ExtendedDOMSlots()
{
nsDOMSlots* slots = DOMSlots();
if (!slots->mExtendedSlots) {
slots->mExtendedSlots = MakeUnique<nsExtendedDOMSlots>();
}
return slots->mExtendedSlots.get();
}
nsExtendedDOMSlots* GetExistingExtendedDOMSlots() const
{
nsDOMSlots* slots = GetExistingDOMSlots();
if (slots) {
return slots->mExtendedSlots.get();
}
return nullptr;
}
/**
* Calls SetIsElementInStyleScopeFlagOnSubtree for each shadow tree attached
* to this node, which is assumed to be an Element.

4
dom/base/ShadowRoot.cpp
View file

@ -75,8 +75,8 @@ ShadowRoot::ShadowRoot(nsIContent* aContent,
SetFlags(NODE_IS_IN_SHADOW_TREE);
DOMSlots()->mBindingParent = aContent;
DOMSlots()->mContainingShadow = this;
ExtendedDOMSlots()->mBindingParent = aContent;
ExtendedDOMSlots()->mContainingShadow = this;
// Add the ShadowRoot as a mutation observer on the host to watch
// for mutations because the insertion points in this ShadowRoot

9
dom/base/nsNodeUtils.cpp
View file

@ -301,9 +301,12 @@ nsNodeUtils::LastRelease(nsINode* aNode)
Element* elem = aNode->AsElement();
FragmentOrElement::nsDOMSlots* domSlots =
static_cast<FragmentOrElement::nsDOMSlots*>(slots);
for (auto iter = domSlots->mRegisteredIntersectionObservers.Iter(); !iter.Done(); iter.Next()) {
DOMIntersectionObserver* observer = iter.Key();
observer->UnlinkTarget(*elem);
if (domSlots->mExtendedSlots) {
for (auto iter = domSlots->mExtendedSlots->mRegisteredIntersectionObservers.Iter();
!iter.Done(); iter.Next()) {
DOMIntersectionObserver* observer = iter.Key();
observer->UnlinkTarget(*elem);
}
}
}

6
dom/html/nsGenericHTMLElement.cpp
View file

@ -497,7 +497,7 @@ nsGenericHTMLElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
// We need to consider a labels element is moved to another subtree
// with different root, it needs to update labels list and its root
// as well.
nsDOMSlots* slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots && slots->mLabelsList) {
slots->mLabelsList->MaybeResetRoot(SubtreeRoot());
}
@ -524,7 +524,7 @@ nsGenericHTMLElement::UnbindFromTree(bool aDeep, bool aNullParent)
// We need to consider a labels element is removed from tree,
// it needs to update labels list and its root as well.
nsDOMSlots* slots = GetExistingDOMSlots();
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots && slots->mLabelsList) {
slots->mLabelsList->MaybeResetRoot(SubtreeRoot());
}
@ -1730,7 +1730,7 @@ nsGenericHTMLElement::Labels()
{
MOZ_ASSERT(IsLabelable(),
"Labels() only allow labelable elements to use it.");
nsDOMSlots* slots = DOMSlots();
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
if (!slots->mLabelsList) {
slots->mLabelsList = new nsLabelsNodeList(SubtreeRoot(), MatchLabelsElement,

52
dom/xul/nsXULElement.cpp
View file

@ -174,33 +174,6 @@ nsXULElement::~nsXULElement()
{
}
nsXULElement::nsXULSlots::nsXULSlots()
: nsXULElement::nsDOMSlots()
{
}
nsXULElement::nsXULSlots::~nsXULSlots()
{
NS_IF_RELEASE(mControllers); // Forces release
nsCOMPtr<nsIFrameLoader> frameLoader = do_QueryInterface(mFrameLoaderOrOpener);
if (frameLoader) {
static_cast<nsFrameLoader*>(frameLoader.get())->Destroy();
}
}
void
nsXULElement::nsXULSlots::Traverse(nsCycleCollectionTraversalCallback &cb)
{
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mFrameLoaderOrOpener");
cb.NoteXPCOMChild(mFrameLoaderOrOpener);
}
nsINode::nsSlots*
nsXULElement::CreateSlots()
{
return new nsXULSlots();
}
void
nsXULElement::MaybeUpdatePrivateLifetime()
{
@ -326,12 +299,7 @@ NS_IMPL_CYCLE_COLLECTION_CLASS(nsXULElement)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsXULElement,
nsStyledElement)
{
nsXULSlots* slots = static_cast<nsXULSlots*>(tmp->GetExistingSlots());
if (slots) {
slots->Traverse(cb);
}
}
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsXULElement,
@ -895,9 +863,9 @@ nsXULElement::UnbindFromTree(bool aDeep, bool aNullParent)
// mDocument in nsGlobalWindow::SetDocShell, but I'm not
// sure whether that would fix all possible cycles through
// mControllers.)
nsXULSlots* slots = static_cast<nsXULSlots*>(GetExistingDOMSlots());
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
NS_IF_RELEASE(slots->mControllers);
slots->mControllers = nullptr;
RefPtr<nsFrameLoader> frameLoader = GetFrameLoader();
if (frameLoader) {
frameLoader->Destroy();
@ -1241,9 +1209,9 @@ nsXULElement::RemoveBroadcaster(const nsAString & broadcasterId)
void
nsXULElement::DestroyContent()
{
nsXULSlots* slots = static_cast<nsXULSlots*>(GetExistingDOMSlots());
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots) {
NS_IF_RELEASE(slots->mControllers);
slots->mControllers = nullptr;
RefPtr<nsFrameLoader> frameLoader = GetFrameLoader();
if (frameLoader) {
frameLoader->Destroy();
@ -1473,7 +1441,7 @@ nsIControllers*
nsXULElement::GetControllers(ErrorResult& rv)
{
if (! Controllers()) {
nsDOMSlots* slots = DOMSlots();
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
rv = NS_NewXULControllers(nullptr, NS_GET_IID(nsIControllers),
reinterpret_cast<void**>(&slots->mControllers));
@ -1578,7 +1546,7 @@ nsXULElement::LoadSrc()
RefPtr<nsFrameLoader> frameLoader = GetFrameLoader();
if (!frameLoader) {
// Check if we have an opener we need to be setting
nsXULSlots* slots = static_cast<nsXULSlots*>(Slots());
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
nsCOMPtr<nsPIDOMWindowOuter> opener = do_QueryInterface(slots->mFrameLoaderOrOpener);
if (!opener) {
// If we are a content-primary xul-browser, we want to take the opener property!
@ -1624,7 +1592,7 @@ nsXULElement::GetFrameLoaderXPCOM(nsIFrameLoader **aFrameLoader)
already_AddRefed<nsFrameLoader>
nsXULElement::GetFrameLoader()
{
nsXULSlots* slots = static_cast<nsXULSlots*>(GetExistingSlots());
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (!slots)
return nullptr;
@ -1646,7 +1614,7 @@ nsXULElement::GetParentApplication(mozIApplication** aApplication)
void
nsXULElement::PresetOpenerWindow(mozIDOMWindowProxy* aWindow, ErrorResult& aRv)
{
nsXULSlots* slots = static_cast<nsXULSlots*>(Slots());
nsExtendedDOMSlots* slots = ExtendedDOMSlots();
MOZ_ASSERT(!slots->mFrameLoaderOrOpener, "A frameLoader or opener is present when calling PresetOpenerWindow");
slots->mFrameLoaderOrOpener = aWindow;
@ -1662,7 +1630,7 @@ nsXULElement::SetIsPrerendered()
void
nsXULElement::InternalSetFrameLoader(nsIFrameLoader* aNewFrameLoader)
{
nsXULSlots* slots = static_cast<nsXULSlots*>(GetExistingDOMSlots());
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
MOZ_ASSERT(slots);
slots->mFrameLoaderOrOpener = aNewFrameLoader;

17
dom/xul/nsXULElement.h
View file

@ -609,19 +609,6 @@ protected:
nsresult AddPopupListener(nsIAtom* aName);
class nsXULSlots : public mozilla::dom::Element::nsDOMSlots
{
public:
nsXULSlots();
virtual ~nsXULSlots();
void Traverse(nsCycleCollectionTraversalCallback &cb);
nsCOMPtr<nsISupports> mFrameLoaderOrOpener;
};
virtual nsINode::nsSlots* CreateSlots() override;
nsresult LoadSrc();
/**
@ -677,8 +664,8 @@ protected:
// Internal accessor. This shadows the 'Slots', and returns
// appropriate value.
nsIControllers *Controllers() {
nsDOMSlots* slots = GetExistingDOMSlots();
return slots ? slots->mControllers : nullptr;
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
return slots ? slots->mControllers.get() : nullptr;
}
void UnregisterAccessKey(const nsAString& aOldValue);