SVGAnimatedBoolean.h

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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 DOM_SVG_SVGANIMATEDBOOLEAN_H_

#define DOM_SVG_SVGANIMATEDBOOLEAN_H_

#include "nsError.h"

#include "mozilla/SMILAttr.h"

#include "mozilla/AlreadyAddRefed.h"

#include "mozilla/Attributes.h"

#include "mozilla/UniquePtr.h"

class nsAtom;

namespace mozilla {

class SMILValue;

namespace dom {

class DOMSVGAnimatedBoolean;

class SVGAnimationElement;

class SVGElement;

}  // namespace dom

class SVGAnimatedBoolean {

 public:

  friend class AutoChangeBooleanNotifier;

  using SVGElement = dom::SVGElement;

  void Init(uint8_t aAttrEnum = 0xff, bool aValue = false) {

    mAnimVal = mBaseVal = aValue;

    mAttrEnum = aAttrEnum;

    mIsAnimated = false;

  nsresult SetBaseValueAtom(const nsAtom* aValue, SVGElement* aSVGElement);

  nsAtom* GetBaseValueAtom() const;

  void SetBaseValue(bool aValue, SVGElement* aSVGElement);

  bool GetBaseValue() const { return mBaseVal; }

  void SetAnimValue(bool aValue, SVGElement* aSVGElement);

  bool GetAnimValue() const { return mAnimVal; }

  already_AddRefed<dom::DOMSVGAnimatedBoolean> ToDOMAnimatedBoolean(

      SVGElement* aSVGElement);

  UniquePtr<SMILAttr> ToSMILAttr(SVGElement* aSVGElement);

 private:

  bool mAnimVal;

  bool mBaseVal;

  bool mIsAnimated;

  uint8_t mAttrEnum;  // element specified tracking for attribute

 public:

  struct SMILBool : public SMILAttr {

   public:

    SMILBool(SVGAnimatedBoolean* aVal, SVGElement* aSVGElement)

        : mVal(aVal), mSVGElement(aSVGElement) {}

    // These will stay alive because a SMILAttr only lives as long

    // as the Compositing step, and DOM elements don't get a chance to

    // die during that.

    SVGAnimatedBoolean* mVal;

    SVGElement* mSVGElement;

    // SMILAttr methods

    nsresult ValueFromString(const nsAString& aStr,

                             const dom::SVGAnimationElement* aSrcElement,

                             SMILValue& aValue,

                             bool& aPreventCachingOfSandwich) const override;

    SMILValue GetBaseValue() const override;

    void ClearAnimValue() override;

    nsresult SetAnimValue(const SMILValue& aValue) override;

};

};

}  // namespace mozilla

#endif  // DOM_SVG_SVGANIMATEDBOOLEAN_H_