зеркало из https://github.com/mozilla/gecko-dev.git
123 строки
4.4 KiB
C++
123 строки
4.4 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 DOM_SVG_SVGANIMATIONELEMENT_H_
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#define DOM_SVG_SVGANIMATIONELEMENT_H_
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#include "mozilla/Attributes.h"
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#include "mozilla/SMILTimedElement.h"
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#include "mozilla/dom/IDTracker.h"
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#include "mozilla/dom/SVGElement.h"
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#include "mozilla/dom/SVGTests.h"
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namespace mozilla {
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namespace dom {
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using SVGAnimationElementBase = SVGElement;
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class SVGAnimationElement : public SVGAnimationElementBase, public SVGTests {
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protected:
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explicit SVGAnimationElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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nsresult Init();
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virtual ~SVGAnimationElement() = default;
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public:
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// interfaces:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGAnimationElement,
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SVGAnimationElementBase)
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virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override = 0;
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// nsIContent specializations
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virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
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virtual void UnbindFromTree(bool aNullParent) override;
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virtual bool IsNodeOfType(uint32_t aFlags) const override;
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// Element specializations
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virtual bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) override;
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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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Element* GetTargetElementContent();
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virtual bool GetTargetAttributeName(int32_t* aNamespaceID,
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nsAtom** aLocalName) const;
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mozilla::SMILTimedElement& TimedElement();
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mozilla::SMILTimeContainer* GetTimeContainer();
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virtual SMILAnimationFunction& AnimationFunction() = 0;
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virtual bool IsEventAttributeNameInternal(nsAtom* aName) override;
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// Utility methods for within SVG
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void ActivateByHyperlink();
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// WebIDL
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SVGElement* GetTargetElement();
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float GetStartTime(ErrorResult& rv);
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float GetCurrentTimeAsFloat();
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float GetSimpleDuration(ErrorResult& rv);
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void BeginElement(ErrorResult& rv) { BeginElementAt(0.f, rv); }
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void BeginElementAt(float offset, ErrorResult& rv);
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void EndElement(ErrorResult& rv) { EndElementAt(0.f, rv); }
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void EndElementAt(float offset, ErrorResult& rv);
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// SVGTests
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SVGElement* AsSVGElement() final { return this; }
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protected:
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// SVGElement overrides
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void UpdateHrefTarget(const nsAString& aHrefStr);
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void AnimationTargetChanged();
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/**
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* Helper that provides a reference to the element with the ID that is
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* referenced by the animation element's 'href' attribute, if any, and that
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* will notify the animation element if the element that that ID identifies
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* changes to a different element (or none). (If the 'href' attribute is not
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* specified, then the animation target is the parent element and this helper
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* is not used.)
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*/
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class HrefTargetTracker final : public IDTracker {
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public:
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explicit HrefTargetTracker(SVGAnimationElement* aAnimationElement)
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: mAnimationElement(aAnimationElement) {}
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protected:
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// We need to be notified when target changes, in order to request a
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// sample (which will clear animation effects from old target and apply
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// them to the new target) and update any event registrations.
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virtual void ElementChanged(Element* aFrom, Element* aTo) override {
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IDTracker::ElementChanged(aFrom, aTo);
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mAnimationElement->AnimationTargetChanged();
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}
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// We need to override IsPersistent to get persistent tracking (beyond the
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// first time the target changes)
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virtual bool IsPersistent() override { return true; }
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private:
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SVGAnimationElement* const mAnimationElement;
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};
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HrefTargetTracker mHrefTarget;
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mozilla::SMILTimedElement mTimedElement;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // DOM_SVG_SVGANIMATIONELEMENT_H_
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