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

chrome/browser/ui/views/ime_driver_mus.cc

-// 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.
-
-#include "chrome/browser/ui/views/ime_driver_mus.h"
-
-#include "content/public/browser/browser_thread.h"
-#include "content/public/common/service_manager_connection.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-#include "services/service_manager/public/cpp/connector.h"
-#include "services/ui/public/interfaces/constants.mojom.h"
-#include "services/ui/public/interfaces/ime/ime.mojom.h"
-
-namespace {
-
-class InputMethod : public ui::mojom::InputMethod {
- public:
-  explicit InputMethod(ui::mojom::TextInputClientPtr client)
-      : client_(std::move(client)) {}
-  ~InputMethod() override {}
-
- private:
-  // ui::mojom::InputMethod:
-  void OnTextInputModeChanged(
-      ui::mojom::TextInputMode text_input_mode) override {}
-  void OnTextInputTypeChanged(
-      ui::mojom::TextInputType text_input_type) override {}
-  void OnCaretBoundsChanged(const gfx::Rect& caret_bounds) override {}
-  void ProcessKeyEvent(std::unique_ptr<ui::Event> key_event,
-                       const ProcessKeyEventCallback& callback) override {
-    DCHECK(key_event->IsKeyEvent());
-
-    if (key_event->AsKeyEvent()->is_char()) {
-      client_->InsertChar(std::move(key_event));
-      callback.Run(true);
-    } else {
-      callback.Run(false);
-    }
-  }
-  void CancelComposition() override {}
-
-  ui::mojom::TextInputClientPtr client_;
-
-  DISALLOW_COPY_AND_ASSIGN(InputMethod);
-};
-
-}  // namespace
-
-IMEDriver::~IMEDriver() {}
-
-// static
-void IMEDriver::Register() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  ui::mojom::IMEDriverPtr ime_driver_ptr;
-  mojo::MakeStrongBinding(base::WrapUnique(new IMEDriver),
-                          GetProxy(&ime_driver_ptr));
-  ui::mojom::IMERegistrarPtr ime_registrar;
-  content::ServiceManagerConnection::GetForProcess()
-      ->GetConnector()
-      ->ConnectToInterface(ui::mojom::kServiceName, &ime_registrar);
-  ime_registrar->RegisterDriver(std::move(ime_driver_ptr));
-}
-
-void IMEDriver::StartSession(
-    int32_t session_id,
-    ui::mojom::TextInputClientPtr client,
-    ui::mojom::InputMethodRequest input_method_request) {
-  input_method_bindings_[session_id] =
-      base::MakeUnique<mojo::Binding<ui::mojom::InputMethod>>(
-          new InputMethod(std::move(client)), std::move(input_method_request));
-}
-
-IMEDriver::IMEDriver() {}
-
-void IMEDriver::CancelSession(int32_t session_id) {
-  input_method_bindings_.erase(session_id);
-}