Add basic PointerEvent support in NewEventHandler

sky/engine/core/frame/NewEventHandler.h

+// 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 SKY_ENGINE_CORE_FRAME_NEWEVENTHANDLER_H_
+#define SKY_ENGINE_CORE_FRAME_NEWEVENTHANDLER_H_
+
+#include "sky/engine/core/dom/Node.h"
+#include "sky/engine/core/rendering/HitTestRequest.h"
+#include "sky/engine/core/rendering/HitTestResult.h"
+#include "sky/engine/wtf/HashMap.h"
+
+namespace blink {
+
+class LocalFrame;
+class WebPointerEvent;
+
+class NewEventHandler {
+    WTF_MAKE_NONCOPYABLE(NewEventHandler);
+public:
+    explicit NewEventHandler(LocalFrame&);
+    ~NewEventHandler();
+
+    bool handlePointerEvent(const WebPointerEvent&);
+
+private:
+    bool handlePointerDownEvent(const WebPointerEvent&);
+    bool handlePointerUpEvent(const WebPointerEvent&);
+    bool handlePointerMoveEvent(const WebPointerEvent&);
+    bool handlePointerCancelEvent(const WebPointerEvent&);
+
+    bool dispatchPointerEvent(Node& target, const WebPointerEvent&);
+    bool dispatchClickEvent(Node& capturingTarget, const WebPointerEvent&);
+
+    Node* targetForHitTestResult(const HitTestResult& hitTestResult);
+    HitTestResult performHitTest(const LayoutPoint&);
+    void updateSelectionForPointerDown(const HitTestResult&, const WebPointerEvent&);
+
+    typedef HashMap<int, RefPtr<Node>> PointerTargetMap;
+
+    LocalFrame& m_frame;
+    PointerTargetMap m_targetForPointer;
+};
+
+}
+
+#endif // SKY_ENGINE_CORE_FRAME_NEWEVENTHANDLER_H_