Parsing CSS properties for scroll snap points

Source/core/style/StyleScrollSnapData.h

 /*

[Timothy Loh, 2015/05/27 00:54:04]

Here and the other file:

https://www.chromium.org/blink/coding-style#TOC-License

[majidvp, 2015/05/27 17:48:11]

I ported this file from WebKit though it is modified to fit blink. This is why I
kept the copyright notice as is.

- * Copyright (C) 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2014 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef DatasetDOMStringMap_h
-#define DatasetDOMStringMap_h
+#ifndef StyleScrollSnapData_h
+#define StyleScrollSnapData_h
 
-#include "core/dom/DOMStringMap.h"
-#include "wtf/PassOwnPtr.h"
+#include "platform/LengthSize.h"
+#include "wtf/RefCounted.h"
+#include "wtf/Vector.h"
 
 namespace blink {
 
-class Element;
-class ExceptionState;
+struct ScrollSnapPoints {
+    Length repeatOffset;
+    bool hasRepeat;
+    bool usesElements;
+    ScrollSnapPoints();
+};
 
-class DatasetDOMStringMap final : public DOMStringMap {
+bool operator==(const ScrollSnapPoints&, const ScrollSnapPoints&);
+inline bool operator!=(const ScrollSnapPoints& a, const ScrollSnapPoints& b) { return !(a == b); }
+
+class StyleScrollSnapData : public RefCounted<StyleScrollSnapData> {
 public:
-    static PassOwnPtrWillBeRawPtr<DatasetDOMStringMap> create(Element* element)
-    {
-        return adoptPtrWillBeNoop(new DatasetDOMStringMap(element));
-    }
+    static PassRefPtr<StyleScrollSnapData> create() { return adoptRef(new StyleScrollSnapData); }
+    PassRefPtr<StyleScrollSnapData> copy() { return adoptRef(new StyleScrollSnapData(*this)); }
 
-#if !ENABLE(OILPAN)
-    virtual void ref() override;
-    virtual void deref() override;
-#endif
-
-    virtual void getNames(Vector<String>&) override;
-    virtual String item(const String& name) override;
-    virtual bool contains(const String& name) override;
-    virtual void setItem(const String& name, const String& value, ExceptionState&) override;
-    virtual bool deleteItem(const String& name) override;
-
-    virtual Element* element() override { return m_element; }
-
-    DECLARE_VIRTUAL_TRACE();
+    ScrollSnapPoints m_xPoints;
+    ScrollSnapPoints m_yPoints;
+    LengthSize m_destination;
+    Vector<LengthSize> m_coordinates;
 
 private:
-    explicit DatasetDOMStringMap(Element* element)
-        : m_element(element)
-    {
-    }
+    StyleScrollSnapData();
+    StyleScrollSnapData(const StyleScrollSnapData&);
+};
 
-    RawPtrWillBeMember<Element> m_element;
-};
+bool operator==(const StyleScrollSnapData&, const StyleScrollSnapData&);
+inline bool operator!=(const StyleScrollSnapData& a, const StyleScrollSnapData& b) { return !(a == b); }
 
 } // namespace blink
 
-#endif // DatasetDOMStringMap_h
+#endif // StyleScrollSnapData_h