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/*
* Copyright (C) 2004 Zack Rusin <zack@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc.
* All rights reserved.
* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
* Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
* Copyright (C) 2011 Sencha, Inc. All rights reserved.
* Copyright (C) 2015 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "third_party/blink/renderer/core/css/computed_style_css_value_mapping.h"
#include "third_party/blink/renderer/core/css/css_custom_property_declaration.h"
#include "third_party/blink/renderer/core/css/css_value.h"
#include "third_party/blink/renderer/core/css/property_registry.h"
#include "third_party/blink/renderer/core/style/computed_style.h"
namespace blink {
const CSSValue* ComputedStyleCSSValueMapping::Get(
const AtomicString custom_property_name,
const ComputedStyle& style,
const PropertyRegistry* registry) {
if (registry) {
const PropertyRegistration* registration =
registry->Registration(custom_property_name);
if (registration) {
const CSSValue* result = style.GetRegisteredVariable(
custom_property_name, registration->Inherits());
if (result)
return result;
return registration->Initial();
}
}
bool is_inherited_property = true;
CSSVariableData* data =
style.GetVariable(custom_property_name, is_inherited_property);
if (!data)
return nullptr;
return CSSCustomPropertyDeclaration::Create(custom_property_name, data);
}
HeapHashMap<AtomicString, Member<const CSSValue>>
ComputedStyleCSSValueMapping::GetVariables(const ComputedStyle& style,
const PropertyRegistry* registry) {
HeapHashMap<AtomicString, Member<const CSSValue>> variables;
StyleInheritedVariables* inherited = style.InheritedVariables();
if (inherited) {
for (const auto& name : inherited->GetCustomPropertyNames()) {
const CSSValue* value =
ComputedStyleCSSValueMapping::Get(name, style, registry);
if (value)
variables.Set(name, value);
}
}
StyleNonInheritedVariables* non_inherited = style.NonInheritedVariables();
if (non_inherited) {
for (const auto& name : non_inherited->GetCustomPropertyNames()) {
const CSSValue* value =
ComputedStyleCSSValueMapping::Get(name, style, registry);
if (value)
variables.Set(name, value);
}
}
// Registered properties with initial values are not stored explicitly on
// each computed style. Their initialness is instead indicated by the
// absence of that property on the computed style. This means that registered
// properties with an implicit initial value will not appear in the result of
// Style[Non]InheritedVariables::GetCustomPropertyNames, so we need to
// iterate though all registrations and add the initial values, if necessary.
if (registry) {
for (const auto& entry : *registry) {
if (variables.Contains(entry.key))
continue;
const CSSValue* initial = entry.value->Initial();
if (initial)
variables.Set(entry.key, initial);
}
}
return variables;
}
} // namespace blink
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