athena: Use mojo to provide the bindings for the virtual keyboard.

ui/keyboard/webui/vk_mojo_handler.h

+// Copyright 2014 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_WEBUI_VK_MOJO_HANDLER_H_
+#define UI_KEYBOARD_WEBUI_VK_MOJO_HANDLER_H_
+
+#include "base/macros.h"
+#include "ui/base/ime/input_method_observer.h"
+#include "ui/keyboard/webui/keyboard.mojom.h"
+
+namespace keyboard {
+
+class VKMojoHandler : public mojo::InterfaceImpl<KeyboardUIHandlerMojo>,
+                      public ui::InputMethodObserver {
+ public:
+  VKMojoHandler();
+  virtual ~VKMojoHandler();
+
+ private:
+  ui::InputMethod* GetInputMethod();
+
+  // mojo::InterfaceImpl<>:
+  virtual void OnConnectionEstablished() OVERRIDE;
+
+  // KeyboardUIHandlerMojo:
+  virtual void SendKeyEvent(const mojo::String& event_type,
+                            int32_t char_value,
+                            int32_t key_code,
+                            const mojo::String& key_name,
+                            int32_t modifiers) OVERRIDE;
+  virtual void HideKeyboard() OVERRIDE;
+
+  // ui::InputMethodObserver:
+  virtual void OnTextInputTypeChanged(
+      const ui::TextInputClient* client) OVERRIDE;
+  virtual void OnFocus() OVERRIDE;
+  virtual void OnBlur() OVERRIDE;
+  virtual void OnCaretBoundsChanged(const ui::TextInputClient* client) OVERRIDE;
+  virtual void OnTextInputStateChanged(
+      const ui::TextInputClient* text_client) OVERRIDE;
+  virtual void OnInputMethodDestroyed(
+      const ui::InputMethod* input_method) OVERRIDE;
+  virtual void OnShowImeIfNeeded() OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(VKMojoHandler);
+};
+
+}  // namespace keyboard
+
+#endif  // UI_KEYBOARD_WEBUI_VK_MOJO_HANDLER_H_