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