| // 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 StyleVariableData_h |
| #define StyleVariableData_h |
| |
| #include "core/css/CSSVariableData.h" |
| #include "wtf/Forward.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/RefCounted.h" |
| #include "wtf/text/AtomicStringHash.h" |
| |
| namespace blink { |
| |
| class StyleVariableData : public RefCounted<StyleVariableData> { |
| public: |
| static PassRefPtr<StyleVariableData> create() { return adoptRef(new StyleVariableData()); } |
| |
| PassRefPtr<StyleVariableData> copy() { return adoptRef(new StyleVariableData(*this)); } |
| |
| bool operator==(const StyleVariableData& other) const; |
| bool operator!=(const StyleVariableData& other) const { return !(*this == other); } |
| |
| void setVariable(const AtomicString& name, PassRefPtr<CSSVariableData> value) { m_data.set(name, value); } |
| CSSVariableData* getVariable(const AtomicString& name) const; |
| void removeVariable(const AtomicString& name) { return setVariable(name, nullptr); } |
| |
| // This map will contain null pointers if variables are invalid due to |
| // cycles or referencing invalid variables without using a fallback. |
| // Note that this method is slow as a new map is constructed. |
| std::unique_ptr<HashMap<AtomicString, RefPtr<CSSVariableData>>> getVariables() const; |
| private: |
| StyleVariableData() |
| : m_root(nullptr) |
| { } |
| StyleVariableData(StyleVariableData& other); |
| |
| friend class CSSVariableResolver; |
| |
| HashMap<AtomicString, RefPtr<CSSVariableData>> m_data; |
| RefPtr<StyleVariableData> m_root; |
| }; |
| |
| } // namespace blink |
| |
| #endif // StyleVariableData_h |