Options2: Pull the trigger.

chrome/browser/ui/webui/options2/chromeos/system_options_handler.h

+// Copyright (c) 2011 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_WEBUI_OPTIONS2_CHROMEOS_SYSTEM_OPTIONS_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_SYSTEM_OPTIONS_HANDLER_H_
+#pragma once
+
+#include "base/memory/weak_ptr.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/ui/webui/options2/options_ui2.h"
+
+namespace base {
+class DictionaryValue;
+}
+
+// ChromeOS system options page UI handler.
+class SystemOptionsHandler
+  : public OptionsPage2UIHandler,
+    public base::SupportsWeakPtr<SystemOptionsHandler> {
+ public:
+  SystemOptionsHandler();
+  virtual ~SystemOptionsHandler();
+
+  // OptionsPage2UIHandler implementation.
+  virtual void GetLocalizedValues(
+      base::DictionaryValue* localized_strings) OVERRIDE;
+  virtual void Initialize() OVERRIDE;
+
+  virtual void RegisterMessages() OVERRIDE;
+
+  // Called when the accessibility checkbox value is changed.
+  // |args| will contain the checkbox checked state as a string
+  // ("true" or "false").
+  void AccessibilityChangeCallback(const base::ListValue* args);
+
+  // Called when the System configuration screen is used to adjust
+  // the screen brightness.
+  // |args| will be an empty list.
+  void DecreaseScreenBrightnessCallback(const base::ListValue* args);
+  void IncreaseScreenBrightnessCallback(const base::ListValue* args);
+
+ private:
+  // Callback for TouchpadHelper.
+  void TouchpadExists(bool* exists);
+
+  DISALLOW_COPY_AND_ASSIGN(SystemOptionsHandler);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_SYSTEM_OPTIONS_HANDLER_H_