/* * Copyright (C) 2018-2019 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include "SVGPropertyOwner.h" #include <wtf/Optional.h> #include <wtf/RefCounted.h> #include <wtf/text/WTFString.h> namespace WebCore { class SVGElement; class SVGAnimatedProperty : public RefCounted<SVGAnimatedProperty>, public SVGPropertyOwner { public: virtual ~SVGAnimatedProperty() = default; // Manage the relationship with the owner. bool isAttached() const { return m_contextElement; } void detach() { m_contextElement = nullptr; } SVGElement* contextElement() const { return m_contextElement; } virtual String baseValAsString() const { return emptyString(); } virtual String animValAsString() const { return emptyString(); } // Control the synchronization between the attribute and its reflection in baseVal. virtual bool isDirty() const { return false; } virtual void setDirty() { } virtual Optional<String> synchronize() { return WTF::nullopt; } // Control the animation life cycle. bool isAnimating() const { return m_isAnimating; } virtual void startAnimation() { m_isAnimating = true; } virtual void stopAnimation() { m_isAnimating = false; } // Attach/Detach the animVal of the traget element's property by the instance element's property. virtual void instanceStartAnimation(SVGAnimatedProperty&) { m_isAnimating = true; } virtual void instanceStopAnimation() { m_isAnimating = false; } protected: SVGAnimatedProperty(SVGElement* contextElement) : m_contextElement(contextElement) { } SVGPropertyOwner* owner() const override; void commitPropertyChange(SVGProperty*) override; SVGElement* m_contextElement { nullptr }; bool m_isAnimating { false }; }; } // namespace WebCore