Option dialog DOM UI - ChromeOS System page.

chrome/browser/dom_ui/core_options_handler.h

+// Copyright (c) 2010 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_DOM_UI_CORE_OPTIONS_HANDLER_H_
+#define CHROME_BROWSER_DOM_UI_CORE_OPTIONS_HANDLER_H_
+
+#include "base/values.h"
+#include "chrome/browser/dom_ui/options_ui.h"
+
+// Core options UI handler.
+// Handles resource and JS calls common to all options sub-pages.
+class CoreOptionsHandler : public OptionsPageUIHandler {
+ public:
+  CoreOptionsHandler();
+
+  // OptionsUIHandler implementation.
+  virtual void GetLocalizedValues(DictionaryValue* localized_strings);
+
+  // NotificationObserver implementation.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+  // DOMMessageHandler implementation.
+  virtual void RegisterMessages();
+
+ private:
+  // Callback for the "fetchPrefs" message. This message accepts the list of
+  // preference names passed as |value| parameter (ListValue). It passes results
+  // dictionary of preference values by calling prefsFetched() JS method on the
+  // page.
+  void HandleFetchPrefs(const Value* value);
+
+  // Callback for the "observePrefs" message. This message initiates
+  // notification observing for given array of preference names.
+  void HandleObservePefs(const Value* value);
+
+  // Callbacks for the "set<type>Pref" message. This message saves the new
+  // preference value. The input value is an array of strings representing
+  // name-value preference pair.
+  void HandleSetBooleanPref(const Value* value);
+  void HandleSetIntegerPref(const Value* value);
+  void HandleSetStringPref(const Value* value);
+
+  void HandleSetPref(const Value* value, Value::ValueType type);
+
+  void NotifyPrefChanged(const std::wstring* pref_name);
+
+  DISALLOW_COPY_AND_ASSIGN(CoreOptionsHandler);
+};
+
+#endif  // CHROME_BROWSER_DOM_UI_CORE_OPTIONS_HANDLER_H_