/* -*- 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 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef mozilla_dom_SVGUseElement_h #define mozilla_dom_SVGUseElement_h #include "mozilla/dom/FromParser.h" #include "nsReferencedElement.h" #include "nsStubMutationObserver.h" #include "mozilla/dom/SVGGraphicsElement.h" #include "nsSVGLength2.h" #include "nsSVGString.h" #include "nsTArray.h" class nsIContent; class nsSVGUseFrame; nsresult NS_NewSVGSVGElement(nsIContent **aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, mozilla::dom::FromParser aFromParser); nsresult NS_NewSVGUseElement(nsIContent **aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo); namespace mozilla { namespace dom { typedef SVGGraphicsElement SVGUseElementBase; class SVGUseElement final : public SVGUseElementBase, public nsStubMutationObserver { friend class ::nsSVGUseFrame; protected: friend nsresult (::NS_NewSVGUseElement(nsIContent **aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)); explicit SVGUseElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo); virtual ~SVGUseElement(); virtual JSObject* WrapNode(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override; public: // interfaces: NS_DECL_ISUPPORTS_INHERITED NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGUseElement, SVGUseElementBase) NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED // for nsSVGUseFrame's nsIAnonymousContentCreator implementation. nsIContent* CreateAnonymousContent(); nsIContent* GetAnonymousContent() const { return mClone; } void DestroyAnonymousContent(); // nsSVGElement specializations: virtual gfxMatrix PrependLocalTransformsTo( const gfxMatrix &aMatrix, SVGTransformTypes aWhich = eAllTransforms) const override; virtual bool HasValidDimensions() const override; // nsIContent interface virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const override; NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override; // WebIDL already_AddRefed<SVGAnimatedString> Href(); already_AddRefed<SVGAnimatedLength> X(); already_AddRefed<SVGAnimatedLength> Y(); already_AddRefed<SVGAnimatedLength> Width(); already_AddRefed<SVGAnimatedLength> Height(); nsIURI* GetSourceDocURI(); protected: class SourceReference : public nsReferencedElement { public: explicit SourceReference(SVGUseElement* aContainer) : mContainer(aContainer) {} protected: virtual void ElementChanged(Element* aFrom, Element* aTo) override { nsReferencedElement::ElementChanged(aFrom, aTo); if (aFrom) { aFrom->RemoveMutationObserver(mContainer); } mContainer->TriggerReclone(); } private: SVGUseElement* mContainer; }; virtual LengthAttributesInfo GetLengthInfo() override; virtual StringAttributesInfo GetStringInfo() override; /** * Returns true if our width and height should be used, or false if they * should be ignored. As per the spec, this depends on the type of the * element that we're referencing. */ bool OurWidthAndHeightAreUsed() const; void SyncWidthOrHeight(nsIAtom *aName); void LookupHref(); void TriggerReclone(); void UnlinkSource(); enum { ATTR_X, ATTR_Y, ATTR_WIDTH, ATTR_HEIGHT }; nsSVGLength2 mLengthAttributes[4]; static LengthInfo sLengthInfo[4]; enum { HREF, XLINK_HREF }; nsSVGString mStringAttributes[2]; static StringInfo sStringInfo[2]; nsCOMPtr<nsIContent> mOriginal; // if we've been cloned, our "real" copy nsCOMPtr<nsIContent> mClone; // cloned tree SourceReference mSource; // observed element }; } // namespace dom } // namespace mozilla #endif // mozilla_dom_SVGUseElement_h