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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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
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