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/*
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
*
* 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,
* 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 <WebCore/RenderStyleConstants.h>
#include <WebCore/StyleEasingFunction.h>
#include <WebCore/StyleSingleTransitionDelay.h>
#include <WebCore/StyleSingleTransitionDuration.h>
#include <WebCore/StyleSingleTransitionProperty.h>
#include <WebCore/StyleValueTypes.h>
namespace WebCore {
namespace Style {
struct Transition {
Transition() : m_data { Data::create() } { }
Transition(SingleTransitionProperty&& property) : m_data { Data::create(WTFMove(property)) } { }
static Transition clone(const Transition& other)
{
return Transition { Data::create(other.m_data) };
}
const SingleTransitionProperty& property() const { return m_data->m_property; }
SingleTransitionDelay delay() const { return m_data->m_delay; }
SingleTransitionDuration duration() const { return m_data->m_duration; }
const EasingFunction& timingFunction() const { return m_data->m_timingFunction; }
TransitionBehavior behavior() const { return static_cast<TransitionBehavior>(m_data->m_behavior); }
void setProperty(SingleTransitionProperty&& property) { m_data->m_property = WTFMove(property); m_data->m_propertySet = true; }
void setDelay(SingleTransitionDelay delay) { m_data->m_delay = delay; m_data->m_delaySet = true; }
void setDuration(SingleTransitionDuration duration) { m_data->m_duration = duration; m_data->m_durationSet = true; }
void setTimingFunction(EasingFunction&& function) { m_data->m_timingFunction = WTFMove(function); m_data->m_timingFunctionSet = true; }
void setBehavior(TransitionBehavior behavior) { m_data->m_behavior = static_cast<bool>(behavior); m_data->m_behaviorSet = true; }
void fillProperty(SingleTransitionProperty&& property) { setProperty(WTFMove(property)); m_data->m_propertyFilled = true; }
void fillDelay(SingleTransitionDelay delay) { setDelay(delay); m_data->m_delayFilled = true; }
void fillDuration(SingleTransitionDuration duration) { setDuration(duration); m_data->m_durationFilled = true; }
void fillTimingFunction(EasingFunction&& function) { setTimingFunction(WTFMove(function)); m_data->m_timingFunctionFilled = true; }
void fillBehavior(TransitionBehavior behavior) { setBehavior(behavior); m_data->m_behaviorFilled = true; }
void clearProperty() { m_data->m_propertySet = false; m_data->m_propertyFilled = false; }
void clearDelay() { m_data->m_delaySet = false; m_data->m_delayFilled = false; }
void clearDuration() { m_data->m_durationSet = false; m_data->m_durationFilled = false; }
void clearTimingFunction() { m_data->m_timingFunctionSet = false; m_data->m_timingFunctionFilled = false; }
void clearBehavior() { m_data->m_behaviorSet = false; m_data->m_behaviorFilled = false; }
bool isPropertySet() const { return m_data->m_propertySet; }
bool isDelaySet() const { return m_data->m_delaySet; }
bool isDurationSet() const { return m_data->m_durationSet; }
bool isTimingFunctionSet() const { return m_data->m_timingFunctionSet; }
bool isBehaviorSet() const { return m_data->m_behaviorSet; }
bool isPropertyFilled() const { return m_data->m_propertyFilled; }
bool isDelayFilled() const { return m_data->m_delayFilled; }
bool isDurationFilled() const { return m_data->m_durationFilled; }
bool isTimingFunctionFilled() const { return m_data->m_timingFunctionFilled; }
bool isBehaviorFilled() const { return m_data->m_behaviorFilled; }
static SingleTransitionProperty initialProperty() { return CSS::Keyword::All { }; }
static SingleTransitionDelay initialDelay() { return 0; }
static SingleTransitionDuration initialDuration() { return 0; }
static EasingFunction initialTimingFunction() { return EasingFunction { CubicBezierTimingFunction::create() }; }
static TransitionBehavior initialBehavior() { return TransitionBehavior::Normal; }
// CoordinatedValueList value functions.
bool isEmpty() const
{
return (!isPropertySet() || isPropertyFilled())
&& (!isDelaySet() || isDelayFilled())
&& (!isDurationSet() || isDurationFilled())
&& (!isTimingFunctionSet() || isTimingFunctionFilled())
&& (!isBehaviorSet() || isBehaviorFilled());
}
template<auto isSet, auto getter, auto setter, typename T>
static void fillUnsetProperty(auto& list);
static void fillUnsetProperties(auto& list);
bool operator==(const Transition& other) const
{
return arePointingToEqualData(m_data, other.m_data);
}
private:
struct Data : public RefCounted<Data> {
static Ref<Data> create() { return adoptRef(*new Data()); }
static Ref<Data> create(const Data& other) { return adoptRef(*new Data(other)); }
static Ref<Data> create(SingleTransitionProperty&& property) { return adoptRef(*new Data(WTFMove(property))); }
Data();
Data(const Data&);
Data(SingleTransitionProperty&&);
bool operator==(const Data&) const;
SingleTransitionProperty m_property;
SingleTransitionDelay m_delay;
SingleTransitionDuration m_duration;
EasingFunction m_timingFunction;
PREFERRED_TYPE(TransitionBehavior) bool m_behavior : 1;
bool m_propertySet : 1;
bool m_delaySet : 1;
bool m_durationSet : 1;
bool m_timingFunctionSet : 1;
bool m_behaviorSet : 1;
bool m_propertyFilled : 1;
bool m_delayFilled : 1;
bool m_durationFilled : 1;
bool m_timingFunctionFilled : 1;
bool m_behaviorFilled : 1;
};
Transition(Ref<Data>&& data)
: m_data { WTFMove(data) }
{
}
Ref<Data> m_data;
};
template<auto isSet, auto getter, auto filler, typename T>
void Transition::fillUnsetProperty(auto& list)
{
size_t i = 0;
for (; i < list.size() && (list[i].*isSet)(); ++i) { }
if (i) {
for (size_t j = 0; i < list.size(); ++i, ++j)
(list[i].*filler)(T { (list[j].*getter)() });
}
}
void Transition::fillUnsetProperties(auto& list)
{
fillUnsetProperty<&Transition::isPropertySet, &Transition::property, &Transition::fillProperty, SingleTransitionProperty>(list);
fillUnsetProperty<&Transition::isDelaySet, &Transition::delay, &Transition::fillDelay, SingleTransitionDelay>(list);
fillUnsetProperty<&Transition::isDurationSet, &Transition::duration, &Transition::fillDuration, SingleTransitionDuration>(list);
fillUnsetProperty<&Transition::isTimingFunctionSet, &Transition::timingFunction, &Transition::fillTimingFunction, EasingFunction>(list);
fillUnsetProperty<&Transition::isBehaviorSet, &Transition::behavior, &Transition::fillBehavior, TransitionBehavior>(list);
}
// MARK: - Logging
TextStream& operator<<(TextStream&, const Transition&);
} // namespace Style
} // namespace WebCore
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