148 lines
5.1 KiB
C++
148 lines
5.1 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "SVGAnimatedProperty.h"
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namespace WebCore {
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template<typename ListType>
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class SVGAnimatedPropertyList : public SVGAnimatedProperty {
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public:
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template<typename... Arguments>
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static Ref<SVGAnimatedPropertyList> create(SVGElement* contextElement, Arguments&&... arguments)
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{
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return adoptRef(*new SVGAnimatedPropertyList(contextElement, std::forward<Arguments>(arguments)...));
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}
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~SVGAnimatedPropertyList()
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{
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m_baseVal->detach();
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if (m_animVal)
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m_animVal->detach();
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}
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// Used by the DOM.
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const Ref<ListType>& baseVal() const { return m_baseVal; }
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// Used by SVGElement::parseAttribute().
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Ref<ListType>& baseVal() { return m_baseVal; }
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// Used by the DOM.
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const RefPtr<ListType>& animVal() const { return const_cast<SVGAnimatedPropertyList*>(this)->ensureAnimVal(); }
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// Called by SVGAnimatedPropertyAnimator to pass the animVal to the SVGAnimationFunction::progress.
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RefPtr<ListType>& animVal() { return ensureAnimVal(); }
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// Used when committing a change from the SVGAnimatedProperty to the attribute.
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String baseValAsString() const override { return m_baseVal->valueAsString(); }
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// Used to apply the SVGAnimator change to the target element.
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String animValAsString() const override
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{
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ASSERT(isAnimating());
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return m_animVal->valueAsString();
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}
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// Managing the relationship with the owner.
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void setDirty() override { m_baseVal->setDirty(); }
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bool isDirty() const override { return m_baseVal->isDirty(); }
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std::optional<String> synchronize() override { return m_baseVal->synchronize(); }
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// Used by RenderSVGElements and DumpRenderTree.
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const ListType& currentValue() const
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{
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ASSERT_IMPLIES(isAnimating(), m_animVal);
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return isAnimating() ? *m_animVal : m_baseVal.get();
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}
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// Controlling the animation.
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void startAnimation(SVGAttributeAnimator& animator) override
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{
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if (m_animVal)
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*m_animVal = m_baseVal;
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else
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ensureAnimVal();
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SVGAnimatedProperty::startAnimation(animator);
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}
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void stopAnimation(SVGAttributeAnimator& animator) override
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{
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SVGAnimatedProperty::stopAnimation(animator);
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if (m_animVal)
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*m_animVal = m_baseVal;
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}
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// Controlling the instance animation.
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void instanceStartAnimation(SVGAttributeAnimator& animator, SVGAnimatedProperty& animated) override
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{
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if (isAnimating())
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return;
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m_animVal = static_cast<SVGAnimatedPropertyList&>(animated).animVal();
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SVGAnimatedProperty::instanceStartAnimation(animator, animated);
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}
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void instanceStopAnimation(SVGAttributeAnimator& animator) override
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{
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if (!isAnimating())
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return;
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m_animVal = nullptr;
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SVGAnimatedProperty::instanceStopAnimation(animator);
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}
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// Visual Studio doesn't seem to see these private constructors from subclasses.
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// FIXME: See what it takes to remove this hack.
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#if !COMPILER(MSVC)
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protected:
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#endif
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template<typename... Arguments>
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SVGAnimatedPropertyList(SVGElement* contextElement, Arguments&&... arguments)
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: SVGAnimatedProperty(contextElement)
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, m_baseVal(ListType::create(this, SVGPropertyAccess::ReadWrite, std::forward<Arguments>(arguments)...))
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{
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}
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RefPtr<ListType>& ensureAnimVal()
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{
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if (!m_animVal)
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m_animVal = ListType::create(m_baseVal, SVGPropertyAccess::ReadOnly);
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return m_animVal;
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}
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// Called when m_baseVal changes or an item in m_baseVal changes.
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void commitPropertyChange(SVGProperty* property) override
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{
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if (m_animVal)
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*m_animVal = m_baseVal;
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SVGAnimatedProperty::commitPropertyChange(property);
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}
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Ref<ListType> m_baseVal;
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mutable RefPtr<ListType> m_animVal;
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};
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}
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