109 lines
3.5 KiB
C++
109 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef __NS_SVGSTRING_H__
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#define __NS_SVGSTRING_H__
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#include "nsAutoPtr.h"
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#include "nsError.h"
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#include "nsSVGElement.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/SVGAnimatedString.h"
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class nsSVGString
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{
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public:
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void Init(uint8_t aAttrEnum) {
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mAnimVal = nullptr;
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mAttrEnum = aAttrEnum;
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mIsBaseSet = false;
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}
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void SetBaseValue(const nsAString& aValue,
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nsSVGElement *aSVGElement,
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bool aDoSetAttr);
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void GetBaseValue(nsAString& aValue, const nsSVGElement *aSVGElement) const
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{ aSVGElement->GetStringBaseValue(mAttrEnum, aValue); }
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void SetAnimValue(const nsAString& aValue, nsSVGElement *aSVGElement);
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void GetAnimValue(nsAString& aValue, const nsSVGElement *aSVGElement) const;
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// Returns true if the animated value of this string has been explicitly
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// set (either by animation, or by taking on the base value which has been
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// explicitly set by markup or a DOM call), false otherwise.
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// If this returns false, the animated value is still valid, that is,
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// useable, and represents the default base value of the attribute.
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bool IsExplicitlySet() const
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{ return !!mAnimVal || mIsBaseSet; }
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already_AddRefed<mozilla::dom::SVGAnimatedString>
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ToDOMAnimatedString(nsSVGElement* aSVGElement);
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// Returns a new nsISMILAttr object that the caller must delete
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nsISMILAttr* ToSMILAttr(nsSVGElement *aSVGElement);
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private:
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nsAutoPtr<nsString> mAnimVal;
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uint8_t mAttrEnum; // element specified tracking for attribute
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bool mIsBaseSet;
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public:
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struct DOMAnimatedString final : public mozilla::dom::SVGAnimatedString
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{
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMAnimatedString)
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DOMAnimatedString(nsSVGString* aVal, nsSVGElement* aSVGElement)
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: mozilla::dom::SVGAnimatedString(aSVGElement)
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, mVal(aVal)
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{}
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nsSVGString* mVal; // kept alive because it belongs to content
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void GetBaseVal(nsAString & aResult) override
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{
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mVal->GetBaseValue(aResult, mSVGElement);
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}
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void SetBaseVal(const nsAString & aValue) override
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{
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mVal->SetBaseValue(aValue, mSVGElement, true);
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}
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void GetAnimVal(nsAString & aResult) override
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{
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mSVGElement->FlushAnimations();
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mVal->GetAnimValue(aResult, mSVGElement);
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}
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private:
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virtual ~DOMAnimatedString();
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};
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struct SMILString : public nsISMILAttr
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{
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public:
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SMILString(nsSVGString *aVal, nsSVGElement *aSVGElement)
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: mVal(aVal), mSVGElement(aSVGElement) {}
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// These will stay alive because a nsISMILAttr only lives as long
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// as the Compositing step, and DOM elements don't get a chance to
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// die during that.
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nsSVGString* mVal;
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nsSVGElement* mSVGElement;
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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 void ClearAnimValue() override;
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virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
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};
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};
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#endif //__NS_SVGSTRING_H__
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