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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/. */
/* representation of a SMIL-animatable CSS property on an element */
#ifndef DOM_SMIL_SMILCSSPROPERTY_H_
#define DOM_SMIL_SMILCSSPROPERTY_H_
#include "mozilla/Attributes.h"
#include "mozilla/SMILAttr.h"
#include "nsAtom.h"
#include "nsCSSPropertyID.h"
#include "nsCSSValue.h"
namespace mozilla {
class ComputedStyle;
namespace dom {
class Element;
} // namespace dom
/**
* SMILCSSProperty: Implements the SMILAttr interface for SMIL animations
* that target CSS properties. Represents a particular animation-targeted CSS
* property on a particular element.
*/
class SMILCSSProperty : public SMILAttr {
public:
/**
* Constructs a new SMILCSSProperty.
* @param aPropID The CSS property we're interested in animating.
* @param aElement The element whose CSS property is being animated.
* @param aBaseComputedStyle The ComputedStyle to use when getting the base
* value. If this is nullptr and GetBaseValue is
* called, an empty SMILValue initialized with
* the SMILCSSValueType will be returned.
*/
SMILCSSProperty(nsCSSPropertyID aPropID, dom::Element* aElement,
const ComputedStyle* aBaseComputedStyle);
// SMILAttr methods
nsresult ValueFromString(const nsAString& aStr,
const dom::SVGAnimationElement* aSrcElement,
SMILValue& aValue,
bool& aPreventCachingOfSandwich) const override;
SMILValue GetBaseValue() const override;
nsresult SetAnimValue(const SMILValue& aValue) override;
void ClearAnimValue() override;
/**
* Utility method - returns true if the given property is supported for
* SMIL animation.
*
* @param aProperty The property to check for animation support.
* @return true if the given property is supported for SMIL animation, or
* false otherwise
*/
static bool IsPropertyAnimatable(nsCSSPropertyID aPropID);
protected:
nsCSSPropertyID mPropID;
// Using non-refcounted pointer for mElement -- we know mElement will stay
// alive for my lifetime because a SMILAttr (like me) only lives as long
// as the Compositing step, and DOM elements don't get a chance to die during
// that time.
dom::Element* mElement;
// The style to use when fetching base styles.
//
// As with mElement, since a SMILAttr only lives as long as the
// compositing step and since ComposeAttribute holds an owning reference to
// the base ComputedStyle, we can use a non-owning reference here.
const ComputedStyle* mBaseComputedStyle;
};
} // namespace mozilla
#endif // DOM_SMIL_SMILCSSPROPERTY_H_
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