| // 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/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 SetVariable(const AtomicString& name, |
| scoped_refptr<CSSVariableData> value) { |
| needs_resolution_ = |
| needs_resolution_ || (value && (value->NeedsVariableResolution() || |
| value->NeedsUrlResolution())); |
| data_.Set(name, std::move(value)); |
| } |
| CSSVariableData* GetVariable(const AtomicString& name) const; |
| void RemoveVariable(const AtomicString&); |
| |
| void SetRegisteredVariable(const AtomicString&, const CSSValue*); |
| const CSSValue* RegisteredVariable(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; |
| |
| bool NeedsResolution() const { return needs_resolution_; } |
| void ClearNeedsResolution() { needs_resolution_ = false; } |
| |
| private: |
| StyleInheritedVariables() : root_(nullptr), needs_resolution_(false) {} |
| StyleInheritedVariables(StyleInheritedVariables& other); |
| |
| friend class CSSVariableResolver; |
| |
| HashMap<AtomicString, scoped_refptr<CSSVariableData>> data_; |
| PersistentHeapHashMap<AtomicString, Member<CSSValue>> registered_data_; |
| scoped_refptr<StyleInheritedVariables> root_; |
| bool needs_resolution_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_STYLE_INHERITED_VARIABLES_H_ |