forked from mirrors/gecko-dev
4275cd1039
In order to tailor certain security checks to the caller that is attempting to load a particular piece of content, we need to be able to attach an appropriate triggering principal to the corresponding requests. Since most HTML content is loaded based on attribute values, that means capturing the subject principal of the caller who sets those attributes, which means making it available to AfterSetAttr hooks. MozReview-Commit-ID: BMDL2Uepg0X --HG-- extra : rebase_source : 25e438c243700a9368c393e40e3a6002d968d6c8
135 lines
4.2 KiB
C++
135 lines
4.2 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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#ifndef mozilla_dom_HTMLContentElement_h__
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#define mozilla_dom_HTMLContentElement_h__
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#include "nsAutoPtr.h"
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#include "nsINodeList.h"
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#include "nsGenericHTMLElement.h"
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struct nsCSSSelectorList;
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namespace mozilla {
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namespace dom {
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class DistributedContentList;
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class HTMLContentElement final : public nsGenericHTMLElement
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{
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public:
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explicit HTMLContentElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLContentElement,
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nsGenericHTMLElement)
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static HTMLContentElement* FromContent(nsIContent* aContent)
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{
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if (aContent->IsHTMLContentElement()) {
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return static_cast<HTMLContentElement*>(aContent);
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}
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return nullptr;
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}
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virtual bool IsHTMLContentElement() const override { return true; }
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virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult,
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bool aPreallocateChildren) const override;
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virtual nsIDOMNode* AsDOMNode() override { return this; }
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virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
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nsIContent* aBindingParent,
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bool aCompileEventHandlers) override;
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virtual void UnbindFromTree(bool aDeep = true,
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bool aNullParent = true) override;
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/**
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* Returns whether if the selector of this insertion point
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* matches the provided content.
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*/
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bool Match(nsIContent* aContent);
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bool IsInsertionPoint() const { return mIsInsertionPoint; }
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nsCOMArray<nsIContent>& MatchedNodes() { return mMatchedNodes; }
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void AppendMatchedNode(nsIContent* aContent);
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void RemoveMatchedNode(nsIContent* aContent);
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void InsertMatchedNode(uint32_t aIndex, nsIContent* aContent);
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void ClearMatchedNodes();
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// WebIDL methods.
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already_AddRefed<DistributedContentList> GetDistributedNodes();
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void GetSelect(nsAString& aSelect)
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{
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Element::GetAttr(kNameSpaceID_None, nsGkAtoms::select, aSelect);
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}
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void SetSelect(const nsAString& aSelect)
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{
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Element::SetAttr(kNameSpaceID_None, nsGkAtoms::select, aSelect, true);
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}
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protected:
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virtual ~HTMLContentElement();
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virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
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/**
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* Updates the destination insertion points of the fallback
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* content of this insertion point. If there are nodes matched
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* to this insertion point, then destination insertion points
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* of fallback are cleared, otherwise, this insertion point
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* is a destination insertion point.
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*/
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void UpdateFallbackDistribution();
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virtual nsresult AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal,
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bool aNotify) override;
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/**
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* An array of nodes from the ShadowRoot host that match the
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* content insertion selector.
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*/
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nsCOMArray<nsIContent> mMatchedNodes;
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nsAutoPtr<nsCSSSelectorList> mSelectorList;
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bool mValidSelector;
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bool mIsInsertionPoint;
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};
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class DistributedContentList : public nsINodeList
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{
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public:
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explicit DistributedContentList(HTMLContentElement* aHostElement);
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DistributedContentList)
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// nsIDOMNodeList
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NS_DECL_NSIDOMNODELIST
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// nsINodeList
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virtual nsIContent* Item(uint32_t aIndex) override;
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virtual int32_t IndexOf(nsIContent* aContent) override;
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virtual nsINode* GetParentObject() override { return mParent; }
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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protected:
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virtual ~DistributedContentList();
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RefPtr<HTMLContentElement> mParent;
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nsCOMArray<nsIContent> mDistributedNodes;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_HTMLContentElement_h__
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