chrome/browser/ui/webui/options/content_settings_handler.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_CONTENT_SETTINGS_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CONTENT_SETTINGS_HANDLER_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/prefs/pref_change_registrar.h"
  12 #include "chrome/browser/pepper_flash_settings_manager.h"
  13 #include "chrome/browser/ui/webui/options/options_ui.h"
  14 #include "chrome/browser/ui/webui/options/pepper_flash_content_settings_utils.h"
  15 #include "chrome/common/content_settings.h"
  16 #include "chrome/common/content_settings_types.h"
  17 #include "content/public/browser/notification_observer.h"
  18 #include "content/public/browser/notification_registrar.h"
  19
  20 class HostContentSettingsMap;
  21 class ProtocolHandlerRegistry;
  22
  23 namespace options {
  24
  25 class ContentSettingsHandler : public OptionsPageUIHandler,
  26                                public PepperFlashSettingsManager::Client {
  27  public:
  28   ContentSettingsHandler();
  29   virtual ~ContentSettingsHandler();
  30
  31   // OptionsPageUIHandler implementation.
  32   virtual void GetLocalizedValues(
  33       base::DictionaryValue* localized_strings) OVERRIDE;
  34   virtual void InitializeHandler() OVERRIDE;
  35   virtual void InitializePage() OVERRIDE;
  36   virtual void RegisterMessages() OVERRIDE;
  37
  38   // content::NotificationObserver implementation.
  39   virtual void Observe(int type,
  40                        const content::NotificationSource& source,
  41                        const content::NotificationDetails& details) OVERRIDE;
  42
  43   // PepperFlashSettingsManager::Client implementation.
  44   virtual void OnGetPermissionSettingsCompleted(
  45       uint32 request_id,
  46       bool success,
  47       PP_Flash_BrowserOperations_Permission default_permission,
  48       const ppapi::FlashSiteSettings& sites) OVERRIDE;
  49
  50   // Gets a string identifier for the group name, for use in HTML.
  51   static std::string ContentSettingsTypeToGroupName(ContentSettingsType type);
  52
  53  private:
  54   // Used to determine whether we should show links to Flash camera and
  55   // microphone settings.
  56   struct MediaSettingsInfo {
  57     MediaSettingsInfo();
  58     ~MediaSettingsInfo();
  59
  60     // Cached Pepper Flash settings.
  61     ContentSetting flash_default_setting;
  62     MediaExceptions flash_exceptions;
  63     bool flash_settings_initialized;
  64     uint32_t last_flash_refresh_request_id;
  65
  66     // Whether the links to Flash settings pages are showed.
  67     bool show_flash_default_link;
  68     bool show_flash_exceptions_link;
  69
  70     // Cached Chrome media settings.
  71     ContentSetting default_setting;
  72     bool policy_disable_audio;
  73     bool policy_disable_video;
  74     bool default_setting_initialized;
  75     MediaExceptions exceptions;
  76     bool exceptions_initialized;
  77   };
  78
  79   // Used by ShowFlashMediaLink() to specify which link to show/hide.
  80   enum LinkType {
  81     DEFAULT_SETTING = 0,
  82     EXCEPTIONS,
  83   };
  84
  85   // Functions that call into the page -----------------------------------------
  86
  87   // Updates the page with the default settings (allow, ask, block, etc.)
  88   void UpdateSettingDefaultFromModel(ContentSettingsType type);
  89
  90   // Updates the media radio buttons according to the enabled split prefs.
  91   void UpdateMediaSettingsView();
  92
  93   // Clobbers and rebuilds the specific content setting type exceptions table.
  94   void UpdateExceptionsViewFromModel(ContentSettingsType type);
  95   // Clobbers and rebuilds the specific content setting type exceptions
  96   // OTR table.
  97   void UpdateOTRExceptionsViewFromModel(ContentSettingsType type);
  98   // Clobbers and rebuilds all the exceptions tables in the page (both normal
  99   // and OTR tables).
 100   void UpdateAllExceptionsViewsFromModel();
 101   // As above, but only OTR tables.
 102   void UpdateAllOTRExceptionsViewsFromModel();
 103   // Clobbers and rebuilds just the geolocation exception table.
 104   void UpdateGeolocationExceptionsView();
 105   // Clobbers and rebuilds just the desktop notification exception table.
 106   void UpdateNotificationExceptionsView();
 107   // Clobbers and rebuilds just the Media device exception table.
 108   void UpdateMediaExceptionsView();
 109   // Clobbers and rebuilds just the MIDI SysEx exception table.
 110   void UpdateMIDISysExExceptionsView();
 111   // Clobbers and rebuilds an exception table that's managed by the host content
 112   // settings map.
 113   void UpdateExceptionsViewFromHostContentSettingsMap(ContentSettingsType type);
 114   // As above, but acts on the OTR table for the content setting type.
 115   void UpdateExceptionsViewFromOTRHostContentSettingsMap(
 116       ContentSettingsType type);
 117   // Updates the radio buttons for enabling / disabling handlers.
 118   void UpdateHandlersEnabledRadios();
 119   // Removes one geolocation exception.
 120   void RemoveGeolocationException(const base::ListValue* args,
 121                                   size_t arg_index);
 122   // Removes one notification exception.
 123   void RemoveNotificationException(const base::ListValue* args,
 124                                    size_t arg_index);
 125   // Removes one media camera and microphone exception.
 126   void RemoveMediaException(const base::ListValue* args, size_t arg_index);
 127   // Removes one exception of |type| from the host content settings map.
 128   void RemoveExceptionFromHostContentSettingsMap(
 129       const base::ListValue* args,
 130       size_t arg_index,
 131       ContentSettingsType type);
 132
 133   // Callbacks used by the page ------------------------------------------------
 134
 135   // Sets the default value for a specific content type. |args| includes the
 136   // content type and a string describing the new default the user has
 137   // chosen.
 138   void SetContentFilter(const base::ListValue* args);
 139
 140   // Removes the given row from the table. The first entry in |args| is the
 141   // content type, and the rest of the arguments depend on the content type
 142   // to be removed.
 143   void RemoveException(const base::ListValue* args);
 144
 145   // Changes the value of an exception. Called after the user is done editing an
 146   // exception.
 147   void SetException(const base::ListValue* args);
 148
 149   // Called to decide whether a given pattern is valid, or if it should be
 150   // rejected. Called while the user is editing an exception pattern.
 151   void CheckExceptionPatternValidity(const base::ListValue* args);
 152
 153   // Utility functions ---------------------------------------------------------
 154
 155   // Applies content settings whitelists to reduce breakage / user confusion.
 156   void ApplyWhitelist(ContentSettingsType content_type,
 157                       ContentSetting default_setting);
 158
 159   // Gets the HostContentSettingsMap for the normal profile.
 160   HostContentSettingsMap* GetContentSettingsMap();
 161
 162   // Gets the HostContentSettingsMap for the incognito profile, or NULL if there
 163   // is no active incognito session.
 164   HostContentSettingsMap* GetOTRContentSettingsMap();
 165
 166   // Gets the default setting in string form. If |provider_id| is not NULL, the
 167   // id of the provider which provided the default setting is assigned to it.
 168   std::string GetSettingDefaultFromModel(ContentSettingsType type,
 169                                          std::string* provider_id);
 170
 171   // Gets the ProtocolHandlerRegistry for the normal profile.
 172   ProtocolHandlerRegistry* GetProtocolHandlerRegistry();
 173
 174   void RefreshFlashMediaSettings();
 175
 176   // Fills in |exceptions| with Values for the given |type| from |map|.
 177   void GetExceptionsFromHostContentSettingsMap(
 178       const HostContentSettingsMap* map,
 179       ContentSettingsType type,
 180       base::ListValue* exceptions);
 181
 182   void OnPepperFlashPrefChanged();
 183
 184   void ShowFlashMediaLink(LinkType link_type, bool show);
 185
 186   void UpdateFlashMediaLinksVisibility();
 187
 188   void UpdateProtectedContentExceptionsButton();
 189
 190   // Member variables ---------------------------------------------------------
 191
 192   content::NotificationRegistrar notification_registrar_;
 193   PrefChangeRegistrar pref_change_registrar_;
 194   scoped_ptr<PepperFlashSettingsManager> flash_settings_manager_;
 195   MediaSettingsInfo media_settings_;
 196
 197   DISALLOW_COPY_AND_ASSIGN(ContentSettingsHandler);
 198 };
 199
 200 }  // namespace options
 201
 202 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CONTENT_SETTINGS_HANDLER_H_