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/*
* Copyright (C) 2018 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.
*/
#include "config.h"
#include "DOMCSSRegisterCustomProperty.h"
#include "CSSCustomPropertyValue.h"
#include "CSSPropertyNames.h"
#include "CSSPropertyParser.h"
#include "CSSRegisteredCustomProperty.h"
#include "CSSTokenizer.h"
#include "DOMCSSNamespace.h"
#include "Document.h"
#include "ExceptionOr.h"
#include "StyleBuilder.h"
#include "StyleCustomPropertyRegistry.h"
#include "StyleResolver.h"
#include "StyleScope.h"
#include <wtf/text/WTFString.h>
namespace WebCore {
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(DOMCSSRegisterCustomProperty);
using namespace Style;
ExceptionOr<void> DOMCSSRegisterCustomProperty::registerProperty(Document& document, const DOMCSSCustomPropertyDescriptor& descriptor)
{
if (!isCustomPropertyName(descriptor.name))
return Exception { ExceptionCode::SyntaxError, "The name of this property is not a custom property name."_s };
auto syntax = CSSCustomPropertySyntax::parse(descriptor.syntax);
if (!syntax)
return Exception { ExceptionCode::SyntaxError, "Invalid property syntax definition."_s };
if (!syntax->isUniversal() && descriptor.initialValue.isNull())
return Exception { ExceptionCode::SyntaxError, "An initial value is mandatory except for the '*' syntax."_s };
RefPtr<const Style::CustomProperty> initialValue;
RefPtr<CSSVariableData> initialValueTokensForViewportUnits;
if (!descriptor.initialValue.isNull()) {
CSSTokenizer tokenizer(descriptor.initialValue);
auto parsedInitialValue = CustomPropertyRegistry::parseInitialValue(document, descriptor.name, *syntax, tokenizer.tokenRange());
if (!parsedInitialValue) {
if (parsedInitialValue.error() == CustomPropertyRegistry::ParseInitialValueError::NotComputationallyIndependent)
return Exception { ExceptionCode::SyntaxError, "The given initial value must be computationally independent."_s };
ASSERT(parsedInitialValue.error() == CustomPropertyRegistry::ParseInitialValueError::DidNotParse);
return Exception { ExceptionCode::SyntaxError, "The given initial value does not parse for the given syntax."_s };
}
initialValue = parsedInitialValue->first;
if (parsedInitialValue->second == CustomPropertyRegistry::ViewportUnitDependency::Yes) {
initialValueTokensForViewportUnits = CSSVariableData::create(tokenizer.tokenRange());
document.setHasStyleWithViewportUnits();
}
}
auto property = CSSRegisteredCustomProperty {
descriptor.name,
*syntax,
descriptor.inherits,
WTFMove(initialValue),
WTFMove(initialValueTokensForViewportUnits)
};
auto& registry = document.styleScope().customPropertyRegistry();
if (!registry.registerFromAPI(WTFMove(property)))
return Exception { ExceptionCode::InvalidModificationError, "This property has already been registered."_s };
return { };
}
DOMCSSRegisterCustomProperty* DOMCSSRegisterCustomProperty::from(DOMCSSNamespace& css)
{
auto* supplement = downcast<DOMCSSRegisterCustomProperty>(Supplement<DOMCSSNamespace>::from(&css, supplementName()));
if (!supplement) {
auto newSupplement = makeUnique<DOMCSSRegisterCustomProperty>(css);
supplement = newSupplement.get();
provideTo(&css, supplementName(), WTFMove(newSupplement));
}
return supplement;
}
} // namespace WebCore
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