ui/keyboard/keyboard_ui_handler.h

// Copyright (c) 2013 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 UI_KEYBOARD_KEYBOARD_UI_HANDLER_H_
#define UI_KEYBOARD_KEYBOARD_UI_HANDLER_H_

#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "content/public/browser/web_ui_message_handler.h"

namespace keyboard {

// The WebUI handler for chrome://keyboard.  Inserts text into the currently
// focused TextInputClient.
class KeyboardUIHandler : public content::WebUIMessageHandler {
 public:
  KeyboardUIHandler();
  virtual ~KeyboardUIHandler();

 private:
  // |content::WebUIMessageHandler| implementation:
  virtual void RegisterMessages() OVERRIDE;

  // Callback for the "insertText" message.
  void HandleInsertTextMessage(const base::ListValue* args);

  // Callback for the "getInputContext" message. The first element in
  // |args| should be an integer representing request ID.
  void HandleGetInputContextMessage(const base::ListValue* args);

  // Callback for the "sendKeyEvent" message. The first element in |args| is a
  // dictionary containing an event type, the character being pressed or
  // released, a virtual key code, and the state of the shift key.
  void HandleSendKeyEventMessage(const base::ListValue* args);

  // Callback for the "hideKeyboard" message.
  void HandleHideKeyboard(const base::ListValue* args);

  DISALLOW_COPY_AND_ASSIGN(KeyboardUIHandler);
};

}  // namespace keyboard

#endif  // UI_KEYBOARD_KEYBOARD_UI_HANDLER_H_