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// Copyright 2015 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_STYLE_INHERITED_VARIABLES_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_STYLE_INHERITED_VARIABLES_H_
#include "third_party/blink/renderer/core/css/css_value.h"
#include "third_party/blink/renderer/core/css/css_variable_data.h"
#include "third_party/blink/renderer/core/style/style_variables.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
#include "third_party/blink/renderer/platform/wtf/ref_counted.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string_hash.h"
namespace blink {
class CORE_EXPORT StyleInheritedVariables
: public RefCounted<StyleInheritedVariables> {
public:
static scoped_refptr<StyleInheritedVariables> Create() {
return base::AdoptRef(new StyleInheritedVariables());
}
scoped_refptr<StyleInheritedVariables> Copy() {
return base::AdoptRef(new StyleInheritedVariables(*this));
}
bool operator==(const StyleInheritedVariables& other) const;
bool operator!=(const StyleInheritedVariables& other) const {
return !(*this == other);
}
void SetData(const AtomicString& name, scoped_refptr<CSSVariableData> value) {
needs_resolution_ =
needs_resolution_ || (value && value->NeedsVariableResolution());
variables_.SetData(name, std::move(value));
}
StyleVariables::OptionalData GetData(const AtomicString&) const;
void SetValue(const AtomicString& name, const CSSValue* value) {
needs_resolution_ = true;
variables_.SetValue(name, value);
}
StyleVariables::OptionalValue GetValue(const AtomicString&) const;
// Note that not all custom property names returned here necessarily have
// valid values, due to cycles or references to invalid variables without
// using a fallback.
HashSet<AtomicString> GetCustomPropertyNames() const;
const StyleVariables::DataMap& Data() const { return variables_.Data(); }
const StyleVariables::ValueMap& Values() const { return variables_.Values(); }
bool NeedsResolution() const { return needs_resolution_; }
void ClearNeedsResolution() { needs_resolution_ = false; }
private:
StyleInheritedVariables();
StyleInheritedVariables(StyleInheritedVariables& other);
StyleVariables variables_;
scoped_refptr<StyleInheritedVariables> root_;
bool needs_resolution_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_STYLE_INHERITED_VARIABLES_H_
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