chrome/browser/chromeos/input_method/ refactoring [part 6 of 6]

chrome/browser/chromeos/input_method/ibus_controller_base.h

+// Copyright (c) 2012 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_IBUS_CONTROLLER_BASE_H_
+#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_IBUS_CONTROLLER_BASE_H_
+#pragma once
+
+#include <map>
+#include <utility>
+
+#include "base/observer_list.h"
+#include "chrome/browser/chromeos/input_method/ibus_controller.h"
+#include "chrome/browser/chromeos/input_method/input_method_config.h"
+#include "chrome/browser/chromeos/input_method/input_method_property.h"
+
+namespace chromeos {
+namespace input_method {
+
+// The common implementation of the IBusController. This file does not depend on
+// libibus, hence is unit-testable.
+class IBusControllerBase : public IBusController {
+ public:
+  IBusControllerBase();
+  virtual ~IBusControllerBase();
+
+  // IBusController overrides. Derived classes should not override these 4
+  // functions.
+  virtual void AddObserver(Observer* observer) OVERRIDE;
+  virtual void RemoveObserver(Observer* observer) OVERRIDE;
+  virtual bool SetInputMethodConfig(
+      const std::string& section,
+      const std::string& config_name,
+      const InputMethodConfigValue& value) OVERRIDE;
+  virtual const InputMethodPropertyList& GetCurrentProperties() const OVERRIDE;
+
+  // Gets the current input method configuration.
+  bool GetInputMethodConfigForTesting(const std::string& section,
+                                      const std::string& config_name,
+                                      InputMethodConfigValue* out_value);
+
+  // Notifies all |observers_|.
+  void NotifyPropertyChangedForTesting();
+
+  // Updates |current_property_list_|.
+  void SetCurrentPropertiesForTesting(
+      const InputMethodPropertyList& current_property_list);
+
+ protected:
+  typedef std::pair<std::string, std::string> ConfigKeyType;
+  typedef std::map<
+    ConfigKeyType, InputMethodConfigValue> InputMethodConfigRequests;
+
+  virtual bool SetInputMethodConfigInternal(
+      const ConfigKeyType& key,
+      const InputMethodConfigValue& value) = 0;
+
+  ObserverList<Observer> observers_;
+
+  // Values that have been set via SetInputMethodConfig(). We keep a copy
+  // available to (re)send when the system input method framework (re)starts.
+  InputMethodConfigRequests current_config_values_;
+
+  // The value which will be returned by GetCurrentProperties(). Derived classes
+  // should update this variable when needed.
+  InputMethodPropertyList current_property_list_;
+
+  DISALLOW_COPY_AND_ASSIGN(IBusControllerBase);
+};
+
+}  // namespace input_method
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_IBUS_CONTROLLER_BASE_H_