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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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109
dom/svg/nsSVGString.h Normal file
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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 __NS_SVGSTRING_H__
#define __NS_SVGSTRING_H__
#include "nsAutoPtr.h"
#include "nsError.h"
#include "nsSVGElement.h"
#include "mozilla/Attributes.h"
#include "mozilla/dom/SVGAnimatedString.h"
class nsSVGString
{
public:
void Init(uint8_t aAttrEnum) {
mAnimVal = nullptr;
mAttrEnum = aAttrEnum;
mIsBaseSet = false;
}
void SetBaseValue(const nsAString& aValue,
nsSVGElement *aSVGElement,
bool aDoSetAttr);
void GetBaseValue(nsAString& aValue, const nsSVGElement *aSVGElement) const
{ aSVGElement->GetStringBaseValue(mAttrEnum, aValue); }
void SetAnimValue(const nsAString& aValue, nsSVGElement *aSVGElement);
void GetAnimValue(nsAString& aValue, const nsSVGElement *aSVGElement) const;
// Returns true if the animated value of this string has been explicitly
// set (either by animation, or by taking on the base value which has been
// explicitly set by markup or a DOM call), false otherwise.
// If this returns false, the animated value is still valid, that is,
// useable, and represents the default base value of the attribute.
bool IsExplicitlySet() const
{ return !!mAnimVal || mIsBaseSet; }
already_AddRefed<mozilla::dom::SVGAnimatedString>
ToDOMAnimatedString(nsSVGElement* aSVGElement);
// Returns a new nsISMILAttr object that the caller must delete
nsISMILAttr* ToSMILAttr(nsSVGElement *aSVGElement);
private:
nsAutoPtr<nsString> mAnimVal;
uint8_t mAttrEnum; // element specified tracking for attribute
bool mIsBaseSet;
public:
struct DOMAnimatedString final : public mozilla::dom::SVGAnimatedString
{
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMAnimatedString)
DOMAnimatedString(nsSVGString* aVal, nsSVGElement* aSVGElement)
: mozilla::dom::SVGAnimatedString(aSVGElement)
, mVal(aVal)
{}
nsSVGString* mVal; // kept alive because it belongs to content
void GetBaseVal(nsAString & aResult) override
{
mVal->GetBaseValue(aResult, mSVGElement);
}
void SetBaseVal(const nsAString & aValue) override
{
mVal->SetBaseValue(aValue, mSVGElement, true);
}
void GetAnimVal(nsAString & aResult) override
{
mSVGElement->FlushAnimations();
mVal->GetAnimValue(aResult, mSVGElement);
}
private:
virtual ~DOMAnimatedString();
};
struct SMILString : public nsISMILAttr
{
public:
SMILString(nsSVGString *aVal, nsSVGElement *aSVGElement)
: mVal(aVal), mSVGElement(aSVGElement) {}
// These will stay alive because a nsISMILAttr only lives as long
// as the Compositing step, and DOM elements don't get a chance to
// die during that.
nsSVGString* mVal;
nsSVGElement* mSVGElement;
// 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 void ClearAnimValue() override;
virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
};
};
#endif //__NS_SVGSTRING_H__