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/* -*- 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_SVGMPathElement_h
#define mozilla_dom_SVGMPathElement_h
#include "nsSVGElement.h"
#include "nsStubMutationObserver.h"
#include "nsSVGString.h"
#include "nsReferencedElement.h"
nsresult NS_NewSVGMPathElement(nsIContent **aResult,
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
typedef nsSVGElement SVGMPathElementBase;
namespace mozilla {
namespace dom {
class SVGPathElement;
class SVGMPathElement final : public SVGMPathElementBase,
public nsStubMutationObserver
{
protected:
friend nsresult (::NS_NewSVGMPathElement(nsIContent **aResult,
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
explicit SVGMPathElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
~SVGMPathElement();
virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
public:
// interfaces:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGMPathElement,
SVGMPathElementBase)
NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
// nsIContent interface
virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const override;
virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
nsIContent* aBindingParent,
bool aCompileEventHandlers) override;
virtual void UnbindFromTree(bool aDeep, bool aNullParent) override;
virtual nsresult UnsetAttr(int32_t aNamespaceID, nsIAtom* aAttribute,
bool aNotify) override;
// Element specializations
virtual bool ParseAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult) override;
// Public helper method: If our xlink:href attribute links to a <path>
// element, this method returns a pointer to that element. Otherwise,
// this returns nullptr.
SVGPathElement* GetReferencedPath();
// WebIDL
already_AddRefed<SVGAnimatedString> Href();
protected:
class PathReference : public nsReferencedElement {
public:
explicit PathReference(SVGMPathElement* aMpathElement) :
mMpathElement(aMpathElement) {}
protected:
// We need to be notified when target changes, in order to request a sample
// (which will clear animation effects that used the old target-path
// and recompute the animation effects using the new target-path).
virtual void ElementChanged(Element* aFrom, Element* aTo) override {
nsReferencedElement::ElementChanged(aFrom, aTo);
if (aFrom) {
aFrom->RemoveMutationObserver(mMpathElement);
}
if (aTo) {
aTo->AddMutationObserver(mMpathElement);
}
mMpathElement->NotifyParentOfMpathChange(mMpathElement->GetParent());
}
// We need to override IsPersistent to get persistent tracking (beyond the
// first time the target changes)
virtual bool IsPersistent() override { return true; }
private:
SVGMPathElement* const mMpathElement;
};
virtual StringAttributesInfo GetStringInfo() override;
void UpdateHrefTarget(nsIContent* aParent, const nsAString& aHrefStr);
void UnlinkHrefTarget(bool aNotifyParent);
void NotifyParentOfMpathChange(nsIContent* aParent);
enum { HREF, XLINK_HREF };
nsSVGString mStringAttributes[2];
static StringInfo sStringInfo[2];
PathReference mHrefTarget;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_SVGMPathElement_h
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