IME for Mus: Use ui::InputMethodChromeOS to provide logic for ime driver.

chrome/browser/ui/views/ime_driver/remote_text_input_client.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 CHROME_BROWSER_UI_VIEWS_IME_DRIVER_REMOTE_TEXT_INPUT_CLIENT_H_
+#define CHROME_BROWSER_UI_VIEWS_IME_DRIVER_REMOTE_TEXT_INPUT_CLIENT_H_
+
+#include "services/ui/public/interfaces/ime/ime.mojom.h"
+#include "ui/base/ime/text_input_client.h"
+
+// This implementation of ui::TextInputClient sends all updates via mojo IPC to
+// a remote client. This is intended to be passed to the overrides of
+// ui::InputMethod::SetFocusedTextInputClient().
+class RemoteTextInputClient : public ui::TextInputClient {
+ public:
+  explicit RemoteTextInputClient(ui::mojom::TextInputClientPtr remote_client);
+  ~RemoteTextInputClient() override;
+
+ private:
+  // ui::TextInputClient:
+  void SetCompositionText(const ui::CompositionText& composition) override;
+  void ConfirmCompositionText() override;
+  void ClearCompositionText() override;
+  void InsertText(const base::string16& text) override;
+  void InsertChar(const ui::KeyEvent& event) override;
+  ui::TextInputType GetTextInputType() const override;
+  ui::TextInputMode GetTextInputMode() const override;
+  base::i18n::TextDirection GetTextDirection() const override;
+  int GetTextInputFlags() const override;
+  bool CanComposeInline() const override;
+  gfx::Rect GetCaretBounds() const override;
+  bool GetCompositionCharacterBounds(uint32_t index,
+                                     gfx::Rect* rect) const override;
+  bool HasCompositionText() const override;
+  bool GetTextRange(gfx::Range* range) const override;
+  bool GetCompositionTextRange(gfx::Range* range) const override;
+  bool GetSelectionRange(gfx::Range* range) const override;
+  bool SetSelectionRange(const gfx::Range& range) override;
+  bool DeleteRange(const gfx::Range& range) override;
+  bool GetTextFromRange(const gfx::Range& range,
+                        base::string16* text) const override;
+  void OnInputMethodChanged() override;
+  bool ChangeTextDirectionAndLayoutAlignment(
+      base::i18n::TextDirection direction) override;
+  void ExtendSelectionAndDelete(size_t before, size_t after) override;
+  void EnsureCaretNotInRect(const gfx::Rect& rect) override;
+  bool IsTextEditCommandEnabled(ui::TextEditCommand command) const override;
+  void SetTextEditCommandForNextKeyEvent(ui::TextEditCommand command) override;
+
+  ui::mojom::TextInputClientPtr remote_client_;
+
+  DISALLOW_COPY_AND_ASSIGN(RemoteTextInputClient);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_IME_DRIVER_REMOTE_TEXT_INPUT_CLIENT_H_