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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/. */
/* representation of a SMIL-animatable mapped attribute on an element */
#ifndef NS_SMILMAPPEDATTRIBUTE_H_
#define NS_SMILMAPPEDATTRIBUTE_H_
#include "mozilla/Attributes.h"
#include "nsSMILCSSProperty.h"
/* We'll use the empty-string atom |nsGkAtoms::_empty| as the key for storing
* an element's animated content style rule in its Property Table, under the
* property-category SMIL_MAPPED_ATTR_ANIMVAL. Everything else stored in that
* category is keyed off of the XML attribute name, so the empty string is a
* good "reserved" key to use for storing the style rule (since XML attributes
* all have nonempty names).
*/
#define SMIL_MAPPED_ATTR_STYLERULE_ATOM nsGkAtoms::_empty
/**
* nsSMILMappedAttribute: Implements the nsISMILAttr interface for SMIL
* animations whose targets are attributes that map to CSS properties. An
* instance of this class represents a particular animation-targeted mapped
* attribute on a particular element.
*/
class nsSMILMappedAttribute : public nsSMILCSSProperty {
public:
/**
* Constructs a new nsSMILMappedAttribute.
*
* @param aPropID The CSS property for the mapped attribute we're
* interested in animating.
* @param aElement The element whose attribute is being animated.
*/
nsSMILMappedAttribute(nsCSSPropertyID aPropID, mozilla::dom::Element* aElement) :
nsSMILCSSProperty(aPropID, aElement) {}
// nsISMILAttr methods
virtual nsresult ValueFromString(const nsAString& aStr,
const mozilla::dom::SVGAnimationElement* aSrcElement,
nsSMILValue& aValue,
bool& aPreventCachingOfSandwich) const override;
virtual nsSMILValue GetBaseValue() const override;
virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
virtual void ClearAnimValue() override;
protected:
// Helper Methods
void FlushChangesToTargetAttr() const;
already_AddRefed<nsIAtom> GetAttrNameAtom() const;
};
#endif // NS_SMILMAPPEDATTRIBUTE_H_
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