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/*
* Copyright (C) 2021 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 THE COPYRIGHT HOLDER "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 THE COPYRIGHT HOLDER 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 "CSSLayerBlockRule.h"
#include "CSSMarkup.h"
#include "CSSStyleSheet.h"
#include "StyleRule.h"
#include <wtf/text/StringBuilder.h>
namespace WebCore {
CSSLayerBlockRule::CSSLayerBlockRule(StyleRuleLayer& rule, CSSStyleSheet* parent)
: CSSGroupingRule(rule, parent)
{
ASSERT(!rule.isStatement());
}
Ref<CSSLayerBlockRule> CSSLayerBlockRule::create(StyleRuleLayer& rule, CSSStyleSheet* parent)
{
return adoptRef(*new CSSLayerBlockRule(rule, parent));
}
String CSSLayerBlockRule::cssText() const
{
StringBuilder builder;
builder.append("@layer"_s);
if (auto name = this->name(); !name.isEmpty())
builder.append(' ', name);
appendCSSTextForItems(builder);
return builder.toString();
}
String CSSLayerBlockRule::name() const
{
auto& layer = downcast<StyleRuleLayer>(groupRule());
if (layer.name().isEmpty())
return emptyString();
return stringFromCascadeLayerName(layer.name());
}
String stringFromCascadeLayerName(const CascadeLayerName& name)
{
StringBuilder result;
for (auto& segment : name) {
serializeIdentifier(segment, result);
if (&segment != &name.last())
result.append('.');
}
return result.toString();
}
} // namespace WebCore
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