Partial implementation of inline StylePropertyMap.

third_party/WebKit/Source/core/css/cssom/InlineStylePropertyMap.h

+// Copyright 2016 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 InlineStylePropertyMap_h
+#define InlineStylePropertyMap_h
+
+#include "core/css/cssom/MutableStylePropertyMap.h"
+#include "core/dom/Element.h"
+
+namespace blink {
+
+class CSSValue;
+
+typedef HeapVector<Member<StyleValue>> StyleValueVector;
+typedef HeapHashMap<CSSPropertyID, StyleValueVector> StyleVectorMap;
+
+class CORE_EXPORT InlineStylePropertyMap final : public MutableStylePropertyMap {
+    WTF_MAKE_NONCOPYABLE(InlineStylePropertyMap);
+public:
+    explicit InlineStylePropertyMap(Element* ownerElement)
+        : m_ownerElement(ownerElement)
+        , m_styles() { }
+
+    StyleValue* get(CSSPropertyID) override;
+    StyleValueVector getAll(CSSPropertyID) override;
+    bool has(CSSPropertyID) override;
+    Vector<String> getProperties() override;
+
+    void set(CSSPropertyID, StyleValueOrStyleValueSequenceOrString& item, ExceptionState&) override;

[Timothy Loh, 2016/03/23 03:45:09]

no need to give arguments names in declarations if they don't add any
information

[meade_UTC10, 2016/03/29 06:27:37]

Done.

+    void append(CSSPropertyID, StyleValueOrStyleValueSequenceOrString& item, ExceptionState&) override;
+    void remove(CSSPropertyID, ExceptionState&) override;
+
+    void updatePropertyIfNeeded(CSSPropertyID);
+    void updateCustomProperty(const String& propertyName, PassRefPtrWillBeRawPtr<CSSValue>);
+    void invalidate()
+    {
+        m_cleanStyles.clear();
+    }
+
+    DEFINE_INLINE_VIRTUAL_TRACE()
+    {
+        visitor->trace(m_ownerElement);
+        visitor->trace(m_styles);
+        MutableStylePropertyMap::trace(visitor);
+    }
+
+private:
+    Member<Element> m_ownerElement;
+    StyleVectorMap m_styles;
+    HashMap<CSSPropertyID, bool> m_cleanStyles;

[Timothy Loh, 2016/03/23 03:45:09]

Are we going to set the bool to false ever? Otherwise we can just use a HashSet.

[meade_UTC10, 2016/03/29 06:27:37]

Good idea, done.

+
+    StyleValueVector& ensurePropertyList(CSSPropertyID);
+};
+
+} // namespace blink
+
+#endif