Creat a KeyboardEventManager class

third_party/WebKit/Source/core/input/KeyboardEventManager.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 KeyboardEventManager_h
+#define KeyboardEventManager_h
+
+#include "core/CoreExport.h"
+#include "platform/PlatformEvent.h"
+#include "platform/heap/Handle.h"
+#include "platform/heap/Visitor.h"
+#include "public/platform/WebFocusType.h"
+#include "public/platform/WebInputEventResult.h"
+#include "wtf/Allocator.h"
+
+namespace blink {
+
+class KeyboardEvent;
+class LocalFrame;
+class PlatformKeyboardEvent;
+class ScrollManager;
+
+class CORE_EXPORT KeyboardEventManager {
+    WTF_MAKE_NONCOPYABLE(KeyboardEventManager);
+    DISALLOW_NEW();
+public:
+    explicit KeyboardEventManager(LocalFrame*, ScrollManager*);
+    ~KeyboardEventManager();
+    DECLARE_TRACE();
+
+    bool handleAccessKey(const PlatformKeyboardEvent&);
+    WebInputEventResult keyEvent(const PlatformKeyboardEvent&);
+    void defaultKeyboardEventHandler(KeyboardEvent*, Node*);
+
+    void capsLockStateMayHaveChanged();
+
+private:
+
+    void defaultSpaceEventHandler(KeyboardEvent*, Node*);
+    void defaultBackspaceEventHandler(KeyboardEvent*);
+    void defaultTabEventHandler(KeyboardEvent*);
+    void defaultEscapeEventHandler(KeyboardEvent*);
+    void defaultArrowEventHandler(WebFocusType, KeyboardEvent*);
+
+    const Member<LocalFrame> m_frame;
+
+    ScrollManager* m_scrollManager;
+};
+
+} // namespace blink
+
+#endif // KeyboardEventManager_h