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/*
* Copyright (C) 2025 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#include "config.h"
#include "PositionTryFallback.h"
#include "StyleProperties.h"
#include "StylePropertiesInlines.h"
namespace WebCore {
namespace Style {
PositionTryFallback::~PositionTryFallback() = default;
bool operator==(const PositionTryFallback& lhs, const PositionTryFallback& rhs)
{
RefPtr lhsPositionAreaProperties = lhs.positionAreaProperties;
RefPtr rhsPositionAreaProperties = rhs.positionAreaProperties;
if (lhsPositionAreaProperties && rhsPositionAreaProperties) {
if (lhsPositionAreaProperties == rhsPositionAreaProperties)
return true;
auto lhsPositionArea = lhsPositionAreaProperties->getPropertyCSSValue(CSSPropertyPositionArea);
ASSERT(lhsPositionArea);
auto rhsPositionArea = rhsPositionAreaProperties->getPropertyCSSValue(CSSPropertyPositionArea);
ASSERT(rhsPositionArea);
return *lhsPositionArea == *rhsPositionArea;
}
if (!lhsPositionAreaProperties && !rhsPositionAreaProperties)
return lhs.positionTryRuleName == rhs.positionTryRuleName && lhs.tactics == rhs.tactics;
// If we got here, lhs and rhs don't have the same type (e.g comparing position-area with rule + tactics)
return false;
}
TextStream& operator<<(TextStream& ts, const PositionTryFallback::Tactic& tactic)
{
switch (tactic) {
case PositionTryFallback::Tactic::FlipBlock:
ts << "flip-block"_s;
break;
case PositionTryFallback::Tactic::FlipInline:
ts << "flip-inline"_s;
break;
case PositionTryFallback::Tactic::FlipStart:
ts << "flip-start"_s;
break;
case PositionTryFallback::Tactic::FlipX:
ts << "flip-x"_s;
break;
case PositionTryFallback::Tactic::FlipY:
ts << "flip-y"_s;
break;
}
return ts;
}
TextStream& operator<<(TextStream& ts, const PositionTryFallback& fallback)
{
ts << "(";
if (RefPtr positionAreaProperties = fallback.positionAreaProperties) {
ts << "type: PositionArea ";
auto positionAreaString = positionAreaProperties->getPropertyValue(CSSPropertyPositionArea);
ASSERT(!positionAreaString.isEmpty());
ts << "positionArea: " << positionAreaString;
} else {
ts << "type: RuleAndTactic ";
if (fallback.positionTryRuleName)
ts << "ruleName: " << *fallback.positionTryRuleName << " ";
ts << "tactics: [";
auto separator = ""_s;
for (const auto& tactic : fallback.tactics)
ts << std::exchange(separator, ", "_s) << tactic;
ts << "]";
}
ts << ")";
return ts;
}
TextStream& operator<<(TextStream& ts, const Vector<PositionTryFallback>& positionTryFallbacks)
{
if (positionTryFallbacks.isEmpty()) {
ts << "none"_s;
return ts;
}
auto separator = ""_s;
for (auto& item : positionTryFallbacks) {
ts << std::exchange(separator, ", "_s);
ts << item;
}
return ts;
}
}
}
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