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// Copyright 2018 the Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/css/cssom/prepopulated_computed_style_property_map.h"
#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_variable_data.h"
#include "third_party/blink/renderer/core/css/cssom/computed_style_property_map.h"
#include "third_party/blink/renderer/core/css/cssom/css_unparsed_value.h"
#include "third_party/blink/renderer/core/css/properties/css_property_ref.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/style/computed_style.h"
namespace blink {
PrepopulatedComputedStylePropertyMap::PrepopulatedComputedStylePropertyMap(
const Document& document,
const ComputedStyle& style,
const Vector<CSSPropertyID>& native_properties,
const Vector<AtomicString>& custom_properties)
: StylePropertyMapReadOnlyMainThread() {
// NOTE: This may over-reserve as shorthand properties will get dropped from
// being in the map.
native_values_.ReserveCapacityForSize(native_properties.size());
custom_values_.ReserveCapacityForSize(custom_properties.size());
for (const auto& property_id : native_properties) {
// Silently drop shorthand properties.
DCHECK_NE(property_id, CSSPropertyID::kInvalid);
if (CSSProperty::Get(property_id).IsShorthand())
continue;
UpdateNativeProperty(style, property_id);
}
for (const auto& property_name : custom_properties) {
UpdateCustomProperty(document, style, property_name);
}
}
unsigned PrepopulatedComputedStylePropertyMap::size() const {
return native_values_.size() + custom_values_.size();
}
void PrepopulatedComputedStylePropertyMap::UpdateStyle(
const Document& document,
const ComputedStyle& style) {
for (const auto& property_id : native_values_.Keys()) {
DCHECK_NE(property_id, CSSPropertyID::kInvalid);
UpdateNativeProperty(style, property_id);
}
for (const auto& property_name : custom_values_.Keys()) {
UpdateCustomProperty(document, style, property_name);
}
}
void PrepopulatedComputedStylePropertyMap::UpdateNativeProperty(
const ComputedStyle& style,
CSSPropertyID property_id) {
native_values_.Set(property_id, CSSProperty::Get(property_id)
.CSSValueFromComputedStyle(
style, /* layout_object */ nullptr,
/* allow_visited_style */ false));
}
void PrepopulatedComputedStylePropertyMap::UpdateCustomProperty(
const Document& document,
const ComputedStyle& style,
const AtomicString& property_name) {
CSSPropertyRef ref(property_name, document);
const CSSValue* value = ref.GetProperty().CSSValueFromComputedStyle(
style, /* layout_object */ nullptr,
/* allow_visited_style */ false);
if (!value)
value = CSSUnparsedValue::Create()->ToCSSValue();
custom_values_.Set(property_name, value);
}
const CSSValue* PrepopulatedComputedStylePropertyMap::GetProperty(
CSSPropertyID property_id) const {
return native_values_.at(property_id);
}
const CSSValue* PrepopulatedComputedStylePropertyMap::GetCustomProperty(
AtomicString property_name) const {
return custom_values_.at(property_name);
}
void PrepopulatedComputedStylePropertyMap::ForEachProperty(
const IterationCallback& callback) {
// Have to sort by all properties by code point, so we have to store
// them in a buffer first.
HeapVector<std::pair<CSSPropertyName, Member<const CSSValue>>> values;
for (const auto& entry : native_values_) {
DCHECK(entry.value);
values.emplace_back(CSSPropertyName(entry.key), entry.value);
}
for (const auto& entry : custom_values_) {
DCHECK(entry.value);
values.emplace_back(CSSPropertyName(entry.key), entry.value);
}
std::sort(values.begin(), values.end(), [](const auto& a, const auto& b) {
return ComputedStylePropertyMap::ComparePropertyNames(a.first, b.first);
});
for (const auto& value : values)
callback(value.first, *value.second);
}
String PrepopulatedComputedStylePropertyMap::SerializationForShorthand(
const CSSProperty&) const {
// TODO(816722): Shorthands not yet supported for this style map.
NOTREACHED();
return "";
}
void PrepopulatedComputedStylePropertyMap::Trace(blink::Visitor* visitor) {
visitor->Trace(native_values_);
visitor->Trace(custom_values_);
StylePropertyMapReadOnlyMainThread::Trace(visitor);
}
} // namespace blink
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