Create ModeIndicatorController

chrome/browser/chromeos/input_method/mode_indicator_controller.cc

+// 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.
+
+#include "base/logging.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/chromeos/input_method/input_method_util.h"
+#include "chrome/browser/chromeos/input_method/mode_indicator_controller.h"
+#include "chrome/browser/chromeos/input_method/mode_indicator_widget.h"
+
+namespace chromeos {
+namespace input_method {
+
+namespace {
+// Show mode indicator with the current ime's short name.
+void ShowModeIndicator(InputMethodManager* manager,
+                       ModeIndicatorWidget* mi_widget) {
+  DCHECK(manager);
+  DCHECK(mi_widget);
+
+  // Get the short name of the changed input method (e.g. US, JA, etc.)
+  const InputMethodDescriptor descriptor = manager->GetCurrentInputMethod();
+  const std::string short_name = UTF16ToUTF8(
+      manager->GetInputMethodUtil()->GetInputMethodShortName(descriptor));
+  mi_widget->SetLabelTextUtf8(short_name);
+
+  // Show the widget and hide it after 750msec.
+  mi_widget->Show();
+  const int kDelayMSec = 750;
+  mi_widget->DelayHide(kDelayMSec);
+}
+}  // namespace
+
+ModeIndicatorController::ModeIndicatorController(
+    ModeIndicatorWidget *mi_widget) {
+  mi_widget_.reset(mi_widget);
+}
+
+ModeIndicatorController::~ModeIndicatorController() {
+}
+
+void ModeIndicatorController::SetCursorLocation(
+    const gfx::Rect& cursor_location) {
+  mi_widget_->SetCursorLocation(cursor_location);
+}
+
+void ModeIndicatorController::InputMethodChanged(InputMethodManager* manager,
+                                                 bool show_message) {
+  if (!show_message)
+    return;
+
+  ShowModeIndicator(manager, mi_widget_.get());
+}
+
+void ModeIndicatorController::InputMethodPropertyChanged(
+    InputMethodManager* manager) {
+  // Do nothing.
+}
+
+}  // namespace input_method
+}  // namespace chromeos