Create ModeIndicatorController

This class is a controller of ModeIndicatorWidget.

BUG=177765

Review URL: https://codereview.chromium.org/25670002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226445 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/input_method/mode_indicator_controller.cc

+// Copyright 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

chrome/browser/chromeos/input_method/mode_indicator_controller.h

+// Copyright 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 CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_CONTROLLER_H_
+#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_CONTROLLER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "chromeos/ime/input_method_manager.h"
+
+namespace gfx {
+class Rect;
+}  // namespace gfx
+
+namespace chromeos {
+namespace input_method {
+
+class ModeIndicatorWidget;
+
+// ModeIndicatorController is the controller of ModeIndicatiorWidget on the
+// MVC model.
+class ModeIndicatorController
+    : public InputMethodManager::Observer {
+ public:
+  // This class takes the ownership of |mi_widget|.
+  explicit ModeIndicatorController(ModeIndicatorWidget *mi_widget);
+  virtual ~ModeIndicatorController();
+
+  // Set cursor location, which is the base point to display this indicator.
+  // Bacisally this indicator is displayed underneath the cursor.
+  void SetCursorLocation(const gfx::Rect& cursor_location);
+
+ private:
+  // InputMethodManager::Observer implementation.
+  virtual void InputMethodChanged(InputMethodManager* manager,
+                                  bool show_message) OVERRIDE;
+  virtual void InputMethodPropertyChanged(InputMethodManager* manager) OVERRIDE;
+
+  scoped_ptr<ModeIndicatorWidget> mi_widget_;
+
+  DISALLOW_COPY_AND_ASSIGN(ModeIndicatorController);
+};
+
+}  // namespace input_method
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_CONTROLLER_H_

chrome/chrome_browser_chromeos.gypi

@@ -403,6 +403,8 @@
         'browser/chromeos/input_method/component_extension_ime_manager_impl.h',
         'browser/chromeos/input_method/mock_ibus_controller.cc',
         'browser/chromeos/input_method/mock_ibus_controller.h',
+        'browser/chromeos/input_method/mode_indicator_controller.cc',
+        'browser/chromeos/input_method/mode_indicator_controller.h',
         'browser/chromeos/input_method/mode_indicator_view.cc',
         'browser/chromeos/input_method/mode_indicator_view.h',
         'browser/chromeos/input_method/mode_indicator_widget.cc',