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https://gitlab.winehq.org/wine/wine-gecko.git
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33bb32f549
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find . \
! -wholename "*/.git*" \
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-type f \
\( -iname "*.cpp" \
-o -iname "*.h" \
-o -iname "*.c" \
-o -iname "*.cc" \
-o -iname "*.idl" \
-o -iname "*.ipdl" \
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}
convert MOZ_OVERRIDE override
convert MOZ_FINAL final
441 lines
13 KiB
C++
441 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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/*
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* Base class for all element classes as well as nsDocumentFragment. This
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* provides an implementation of nsIDOMNode, implements nsIContent, provides
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* utility methods for subclasses, and so forth.
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*/
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#ifndef FragmentOrElement_h___
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#define FragmentOrElement_h___
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#include "mozilla/Attributes.h"
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#include "mozilla/MemoryReporting.h"
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#include "nsAttrAndChildArray.h" // member
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#include "nsCycleCollectionParticipant.h" // NS_DECL_CYCLE_*
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#include "nsIContent.h" // base class
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#include "nsINodeList.h" // base class
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#include "nsIWeakReference.h" // base class
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#include "nsNodeUtils.h" // class member nsNodeUtils::CloneNodeImpl
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#include "nsIHTMLCollection.h"
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class ContentUnbinder;
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class nsContentList;
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class nsDOMAttributeMap;
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class nsDOMTokenList;
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class nsIControllers;
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class nsICSSDeclaration;
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class nsIDocument;
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class nsDOMStringMap;
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class nsIURI;
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namespace mozilla {
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namespace dom {
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class Element;
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}
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}
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/**
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* Class that implements the nsIDOMNodeList interface (a list of children of
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* the content), by holding a reference to the content and delegating GetLength
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* and Item to its existing child list.
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* @see nsIDOMNodeList
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*/
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class nsChildContentList final : public nsINodeList
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{
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public:
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explicit nsChildContentList(nsINode* aNode)
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: mNode(aNode)
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{
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}
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS(nsChildContentList)
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// nsWrapperCache
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virtual JSObject* WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
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// nsIDOMNodeList interface
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NS_DECL_NSIDOMNODELIST
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// nsINodeList interface
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virtual int32_t IndexOf(nsIContent* aContent) override;
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virtual nsIContent* Item(uint32_t aIndex) override;
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void DropReference()
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{
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mNode = nullptr;
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}
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virtual nsINode* GetParentObject() override
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{
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return mNode;
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}
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private:
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~nsChildContentList() {}
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// The node whose children make up the list (weak reference)
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nsINode* mNode;
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};
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/**
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* A class that implements nsIWeakReference
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*/
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class nsNodeWeakReference final : public nsIWeakReference
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{
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public:
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explicit nsNodeWeakReference(nsINode* aNode)
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: mNode(aNode)
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{
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}
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIWeakReference
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NS_DECL_NSIWEAKREFERENCE
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virtual size_t SizeOfOnlyThis(mozilla::MallocSizeOf aMallocSizeOf) const override;
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void NoticeNodeDestruction()
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{
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mNode = nullptr;
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}
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private:
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~nsNodeWeakReference();
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nsINode* mNode;
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};
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/**
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* Tearoff to use for nodes to implement nsISupportsWeakReference
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*/
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class nsNodeSupportsWeakRefTearoff final : public nsISupportsWeakReference
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{
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public:
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explicit nsNodeSupportsWeakRefTearoff(nsINode* aNode)
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: mNode(aNode)
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{
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}
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// nsISupports
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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// nsISupportsWeakReference
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NS_DECL_NSISUPPORTSWEAKREFERENCE
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NS_DECL_CYCLE_COLLECTION_CLASS(nsNodeSupportsWeakRefTearoff)
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private:
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~nsNodeSupportsWeakRefTearoff() {}
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nsCOMPtr<nsINode> mNode;
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};
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/**
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* A generic base class for DOM elements, implementing many nsIContent,
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* nsIDOMNode and nsIDOMElement methods.
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*/
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namespace mozilla {
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namespace dom {
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class ShadowRoot;
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class UndoManager;
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class FragmentOrElement : public nsIContent
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{
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public:
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explicit FragmentOrElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
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explicit FragmentOrElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_SIZEOF_EXCLUDING_THIS
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// nsINode interface methods
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virtual uint32_t GetChildCount() const override;
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virtual nsIContent *GetChildAt(uint32_t aIndex) const override;
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virtual nsIContent * const * GetChildArray(uint32_t* aChildCount) const override;
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virtual int32_t IndexOf(const nsINode* aPossibleChild) const override;
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virtual nsresult InsertChildAt(nsIContent* aKid, uint32_t aIndex,
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bool aNotify) override;
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virtual void RemoveChildAt(uint32_t aIndex, bool aNotify) override;
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virtual void GetTextContentInternal(nsAString& aTextContent,
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mozilla::ErrorResult& aError) override;
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virtual void SetTextContentInternal(const nsAString& aTextContent,
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mozilla::ErrorResult& aError) override;
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// nsIContent interface methods
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virtual already_AddRefed<nsINodeList> GetChildren(uint32_t aFilter) override;
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virtual const nsTextFragment *GetText() override;
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virtual uint32_t TextLength() const override;
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virtual nsresult SetText(const char16_t* aBuffer, uint32_t aLength,
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bool aNotify) override;
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// Need to implement this here too to avoid hiding.
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nsresult SetText(const nsAString& aStr, bool aNotify)
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{
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return SetText(aStr.BeginReading(), aStr.Length(), aNotify);
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}
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virtual nsresult AppendText(const char16_t* aBuffer, uint32_t aLength,
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bool aNotify) override;
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virtual bool TextIsOnlyWhitespace() override;
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virtual bool HasTextForTranslation() override;
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virtual void AppendTextTo(nsAString& aResult) override;
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virtual bool AppendTextTo(nsAString& aResult,
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const mozilla::fallible_t&) override NS_WARN_UNUSED_RESULT;
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virtual nsIContent *GetBindingParent() const override;
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virtual nsXBLBinding *GetXBLBinding() const override;
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virtual void SetXBLBinding(nsXBLBinding* aBinding,
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nsBindingManager* aOldBindingManager = nullptr) override;
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virtual ShadowRoot *GetShadowRoot() const override;
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virtual ShadowRoot *GetContainingShadow() const override;
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virtual nsTArray<nsIContent*> &DestInsertionPoints() override;
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virtual nsTArray<nsIContent*> *GetExistingDestInsertionPoints() const override;
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virtual void SetShadowRoot(ShadowRoot* aBinding) override;
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virtual nsIContent *GetXBLInsertionParent() const override;
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virtual void SetXBLInsertionParent(nsIContent* aContent) override;
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virtual bool IsLink(nsIURI** aURI) const override;
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virtual CustomElementData *GetCustomElementData() const override;
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virtual void SetCustomElementData(CustomElementData* aData) override;
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virtual void DestroyContent() override;
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virtual void SaveSubtreeState() override;
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NS_IMETHOD WalkContentStyleRules(nsRuleWalker* aRuleWalker) override;
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nsIHTMLCollection* Children();
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uint32_t ChildElementCount()
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{
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return Children()->Length();
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}
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/**
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* Sets the IsElementInStyleScope flag on each element in the subtree rooted
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* at this node, including any elements reachable through shadow trees.
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*
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* @param aInStyleScope The flag value to set.
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*/
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void SetIsElementInStyleScopeFlagOnSubtree(bool aInStyleScope);
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public:
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/**
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* If there are listeners for DOMNodeInserted event, fires the event on all
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* aNodes
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*/
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static void FireNodeInserted(nsIDocument* aDoc,
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nsINode* aParent,
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nsTArray<nsCOMPtr<nsIContent> >& aNodes);
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NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS(FragmentOrElement)
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/**
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* Fire a DOMNodeRemoved mutation event for all children of this node
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*/
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void FireNodeRemovedForChildren();
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virtual bool OwnedOnlyByTheDOMTree() override
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{
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uint32_t rc = mRefCnt.get();
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if (GetParent()) {
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--rc;
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}
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rc -= mAttrsAndChildren.ChildCount();
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return rc == 0;
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}
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virtual bool IsPurple() override
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{
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return mRefCnt.IsPurple();
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}
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virtual void RemovePurple() override
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{
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mRefCnt.RemovePurple();
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}
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static void ClearContentUnbinder();
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static bool CanSkip(nsINode* aNode, bool aRemovingAllowed);
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static bool CanSkipInCC(nsINode* aNode);
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static bool CanSkipThis(nsINode* aNode);
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static void RemoveBlackMarkedNode(nsINode* aNode);
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static void MarkNodeChildren(nsINode* aNode);
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static void InitCCCallbacks();
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static void MarkUserData(void* aObject, nsIAtom* aKey, void* aChild,
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void *aData);
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/**
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* Is the HTML local name a void element?
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*/
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static bool IsHTMLVoid(nsIAtom* aLocalName);
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protected:
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virtual ~FragmentOrElement();
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/**
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* Copy attributes and state to another element
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* @param aDest the object to copy to
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*/
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nsresult CopyInnerTo(FragmentOrElement* aDest);
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public:
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// Because of a bug in MS C++ compiler nsDOMSlots must be declared public,
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// otherwise nsXULElement::nsXULSlots doesn't compile.
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/**
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* There are a set of DOM- and scripting-specific instance variables
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* that may only be instantiated when a content object is accessed
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* through the DOM. Rather than burn actual slots in the content
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* objects for each of these instance variables, we put them off
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* in a side structure that's only allocated when the content is
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* accessed through the DOM.
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*/
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class nsDOMSlots : public nsINode::nsSlots
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{
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public:
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nsDOMSlots();
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virtual ~nsDOMSlots();
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void Traverse(nsCycleCollectionTraversalCallback &cb, bool aIsXUL);
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void Unlink(bool aIsXUL);
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
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/**
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* The .style attribute (an interface that forwards to the actual
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* style rules)
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* @see nsGenericHTMLElement::GetStyle
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*/
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nsCOMPtr<nsICSSDeclaration> mStyle;
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/**
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* The .dataset attribute.
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* @see nsGenericHTMLElement::GetDataset
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*/
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nsDOMStringMap* mDataset; // [Weak]
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/**
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* The .undoManager property.
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* @see nsGenericHTMLElement::GetUndoManager
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*/
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nsRefPtr<UndoManager> mUndoManager;
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/**
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* SMIL Overridde style rules (for SMIL animation of CSS properties)
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* @see nsIContent::GetSMILOverrideStyle
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*/
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nsCOMPtr<nsICSSDeclaration> mSMILOverrideStyle;
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/**
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* Holds any SMIL override style rules for this element.
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*/
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nsRefPtr<mozilla::css::StyleRule> mSMILOverrideStyleRule;
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/**
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* An object implementing nsIDOMMozNamedAttrMap for this content (attributes)
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* @see FragmentOrElement::GetAttributes
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*/
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nsRefPtr<nsDOMAttributeMap> mAttributeMap;
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union {
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/**
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* The nearest enclosing content node with a binding that created us.
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* @see FragmentOrElement::GetBindingParent
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*/
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nsIContent* mBindingParent; // [Weak]
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/**
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* The controllers of the XUL Element.
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*/
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nsIControllers* mControllers; // [OWNER]
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};
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/**
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* An object implementing the .children property for this element.
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*/
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nsRefPtr<nsContentList> mChildrenList;
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/**
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* An object implementing the .classList property for this element.
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*/
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nsRefPtr<nsDOMTokenList> mClassList;
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/**
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* ShadowRoot bound to the element.
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*/
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nsRefPtr<ShadowRoot> mShadowRoot;
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/**
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* The root ShadowRoot of this element if it is in a shadow tree.
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*/
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nsRefPtr<ShadowRoot> mContainingShadow;
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/**
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* An array of web component insertion points to which this element
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* is distributed.
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*/
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nsTArray<nsIContent*> mDestInsertionPoints;
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/**
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* XBL binding installed on the element.
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*/
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nsRefPtr<nsXBLBinding> mXBLBinding;
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/**
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* XBL binding installed on the lement.
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*/
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nsCOMPtr<nsIContent> mXBLInsertionParent;
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/**
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* Web components custom element data.
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*/
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nsRefPtr<CustomElementData> mCustomElementData;
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};
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protected:
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void GetMarkup(bool aIncludeSelf, nsAString& aMarkup);
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void SetInnerHTMLInternal(const nsAString& aInnerHTML, ErrorResult& aError);
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// Override from nsINode
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virtual nsINode::nsSlots* CreateSlots() override;
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nsDOMSlots *DOMSlots()
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{
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return static_cast<nsDOMSlots*>(Slots());
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}
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nsDOMSlots *GetExistingDOMSlots() const
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{
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return static_cast<nsDOMSlots*>(GetExistingSlots());
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}
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/**
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* Calls SetIsElementInStyleScopeFlagOnSubtree for each shadow tree attached
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* to this node, which is assumed to be an Element.
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*
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* @param aInStyleScope The IsElementInStyleScope flag value to set.
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*/
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void SetIsElementInStyleScopeFlagOnShadowTree(bool aInStyleScope);
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friend class ::ContentUnbinder;
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/**
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* Array containing all attributes and children for this element
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*/
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nsAttrAndChildArray mAttrsAndChildren;
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};
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} // namespace dom
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} // namespace mozilla
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#define NS_ELEMENT_INTERFACE_TABLE_TO_MAP_SEGUE \
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if (NS_SUCCEEDED(rv)) \
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return rv; \
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\
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rv = FragmentOrElement::QueryInterface(aIID, aInstancePtr); \
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NS_INTERFACE_TABLE_TO_MAP_SEGUE
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#endif /* FragmentOrElement_h___ */
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