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 "base/scoped_observer.h"
  13 #include "chrome/browser/pepper_flash_settings_manager.h"
  14 #include "chrome/browser/ui/webui/options/options_ui.h"
  15 #include "chrome/browser/ui/webui/options/pepper_flash_content_settings_utils.h"
  16 #include "components/content_settings/core/browser/content_settings_observer.h"
  17 #include "components/content_settings/core/common/content_settings.h"
  18 #include "components/content_settings/core/common/content_settings_types.h"
  19 #include "content/public/browser/host_zoom_map.h"
  20 #include "content/public/browser/notification_observer.h"
  21 #include "content/public/browser/notification_registrar.h"
  22
  23 class HostContentSettingsMap;
  24 class ProtocolHandlerRegistry;
  25
  26 namespace options {
  27
  28 class ContentSettingsHandler : public OptionsPageUIHandler,
  29                                public content_settings::Observer,
  30                                public content::NotificationObserver,
  31                                public PepperFlashSettingsManager::Client {
  32  public:
  33   ContentSettingsHandler();
  34   ~ContentSettingsHandler() override;
  35
  36   // OptionsPageUIHandler implementation.
  37   void GetLocalizedValues(base::DictionaryValue* localized_strings) override;
  38   void InitializeHandler() override;
  39   void InitializePage() override;
  40   void RegisterMessages() override;
  41
  42   // content_settings::Observer implementation.
  43   void OnContentSettingChanged(const ContentSettingsPattern& primary_pattern,
  44                                const ContentSettingsPattern& secondary_pattern,
  45                                ContentSettingsType content_type,
  46                                std::string resource_identifier) override;
  47
  48   // content::NotificationObserver implementation.
  49   void Observe(int type,
  50                const content::NotificationSource& source,
  51                const content::NotificationDetails& details) override;
  52
  53   // PepperFlashSettingsManager::Client implementation.
  54   void OnGetPermissionSettingsCompleted(
  55       uint32 request_id,
  56       bool success,
  57       PP_Flash_BrowserOperations_Permission default_permission,
  58       const ppapi::FlashSiteSettings& sites) override;
  59
  60   // Gets a string identifier for the group name, for use in HTML.
  61   static std::string ContentSettingsTypeToGroupName(ContentSettingsType type);
  62
  63  private:
  64   // Used to determine whether we should show links to Flash camera and
  65   // microphone settings.
  66   struct MediaSettingsInfo {
  67     MediaSettingsInfo();
  68     ~MediaSettingsInfo();
  69
  70     // Cached Pepper Flash settings.
  71     ContentSetting flash_default_setting;
  72     MediaExceptions flash_exceptions;
  73     bool flash_settings_initialized;
  74     uint32_t last_flash_refresh_request_id;
  75
  76     // Whether the links to Flash settings pages are showed.
  77     bool show_flash_default_link;
  78     bool show_flash_exceptions_link;
  79
  80     // Cached Chrome media settings.
  81     ContentSetting default_audio_setting;
  82     ContentSetting default_video_setting;
  83     bool policy_disable_audio;
  84     bool policy_disable_video;
  85     bool default_settings_initialized;
  86     MediaExceptions exceptions;
  87     bool exceptions_initialized;
  88   };
  89
  90   // Used by ShowFlashMediaLink() to specify which link to show/hide.
  91   enum LinkType {
  92     DEFAULT_SETTING = 0,
  93     EXCEPTIONS,
  94   };
  95
  96   // Functions that call into the page -----------------------------------------
  97
  98   // Updates the page with the default settings (allow, ask, block, etc.)
  99   void UpdateSettingDefaultFromModel(ContentSettingsType type);
 100
 101   // Updates the media radio buttons according to the enabled split prefs.
 102   void UpdateMediaSettingsView();
 103
 104   // Clobbers and rebuilds the specific content setting type exceptions table.
 105   void UpdateExceptionsViewFromModel(ContentSettingsType type);
 106
 107   // Clobbers and rebuilds the specific content setting type exceptions
 108   // OTR table.
 109   void UpdateOTRExceptionsViewFromModel(ContentSettingsType type);
 110
 111   // Clobbers and rebuilds all the exceptions tables in the page (both normal
 112   // and OTR tables).
 113   void UpdateAllExceptionsViewsFromModel();
 114
 115   // As above, but only OTR tables.
 116   void UpdateAllOTRExceptionsViewsFromModel();
 117
 118   // Clobbers and rebuilds just the geolocation exception table.
 119   void UpdateGeolocationExceptionsView();
 120
 121   // Clobbers and rebuilds just the desktop notification exception table.
 122   void UpdateNotificationExceptionsView();
 123
 124   // Clobbers and rebuilds just the Media device exception table.
 125   void UpdateMediaExceptionsView();
 126
 127   // Clobbers and rebuilds just the MIDI SysEx exception table.
 128   void UpdateMIDISysExExceptionsView();
 129
 130   // Modifies the zoom level exceptions list to display correct chrome
 131   // signin page entry. When the legacy (non-WebView-based) signin page
 132   // goes away, this function can be removed.
 133   void AdjustZoomLevelsListForSigninPageIfNecessary(
 134       content::HostZoomMap::ZoomLevelVector* zoom_levels);
 135
 136   // Clobbers and rebuilds just the zoom levels exception table.
 137   void UpdateZoomLevelsExceptionsView();
 138
 139   // Clobbers and rebuilds an exception table that's managed by the host content
 140   // settings map.
 141   void UpdateExceptionsViewFromHostContentSettingsMap(ContentSettingsType type);
 142
 143   // As above, but acts on the OTR table for the content setting type.
 144   void UpdateExceptionsViewFromOTRHostContentSettingsMap(
 145       ContentSettingsType type);
 146
 147   // Updates the radio buttons for enabling / disabling handlers.
 148   void UpdateHandlersEnabledRadios();
 149
 150   // Removes one geolocation exception. |args| contains the parameters passed to
 151   // RemoveException().
 152   void RemoveGeolocationException(const base::ListValue* args);
 153
 154   // Removes one notification exception. |args| contains the parameters passed
 155   // to RemoveException().
 156   void RemoveNotificationException(const base::ListValue* args);
 157
 158   // Removes one media camera and microphone exception. |args| contains the
 159   // parameters passed to RemoveException().
 160   void RemoveMediaException(const base::ListValue* args);
 161
 162   // Removes one exception of |type| from the host content settings map. |args|
 163   // contains the parameters passed to RemoveException().
 164   void RemoveExceptionFromHostContentSettingsMap(
 165       const base::ListValue* args,
 166       ContentSettingsType type);
 167
 168   // Removes one zoom level exception. |args| contains the parameters passed to
 169   // RemoveException().
 170   void RemoveZoomLevelException(const base::ListValue* args);
 171
 172   // Callbacks used by the page ------------------------------------------------
 173
 174   // Sets the default value for a specific content type. |args| includes the
 175   // content type and a string describing the new default the user has
 176   // chosen.
 177   void SetContentFilter(const base::ListValue* args);
 178
 179   // Removes the given row from the table. The first entry in |args| is the
 180   // content type, and the rest of the arguments depend on the content type
 181   // to be removed.
 182   void RemoveException(const base::ListValue* args);
 183
 184   // Changes the value of an exception. Called after the user is done editing an
 185   // exception.
 186   void SetException(const base::ListValue* args);
 187
 188   // Called to decide whether a given pattern is valid, or if it should be
 189   // rejected. Called while the user is editing an exception pattern.
 190   void CheckExceptionPatternValidity(const base::ListValue* args);
 191
 192   // Utility functions ---------------------------------------------------------
 193
 194   // Applies content settings whitelists to reduce breakage / user confusion.
 195   void ApplyWhitelist(ContentSettingsType content_type,
 196                       ContentSetting default_setting);
 197
 198   // Gets the HostContentSettingsMap for the normal profile.
 199   HostContentSettingsMap* GetContentSettingsMap();
 200
 201   // Gets the HostContentSettingsMap for the incognito profile, or NULL if there
 202   // is no active incognito session.
 203   HostContentSettingsMap* GetOTRContentSettingsMap();
 204
 205   // Gets the ProtocolHandlerRegistry for the normal profile.
 206   ProtocolHandlerRegistry* GetProtocolHandlerRegistry();
 207
 208   void RefreshFlashMediaSettings();
 209
 210   // Fills in |exceptions| with Values for the given |type| from |map|.
 211   void GetExceptionsFromHostContentSettingsMap(
 212       const HostContentSettingsMap* map,
 213       ContentSettingsType type,
 214       base::ListValue* exceptions);
 215
 216   void OnPepperFlashPrefChanged();
 217
 218   // content::HostZoomMap subscription.
 219   void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change);
 220
 221   void ShowFlashMediaLink(LinkType link_type, bool show);
 222
 223   void UpdateFlashMediaLinksVisibility();
 224
 225   void UpdateProtectedContentExceptionsButton();
 226
 227   // Member variables ---------------------------------------------------------
 228
 229   content::NotificationRegistrar notification_registrar_;
 230   PrefChangeRegistrar pref_change_registrar_;
 231   scoped_ptr<PepperFlashSettingsManager> flash_settings_manager_;
 232   MediaSettingsInfo media_settings_;
 233   scoped_ptr<content::HostZoomMap::Subscription> host_zoom_map_subscription_;
 234   scoped_ptr<content::HostZoomMap::Subscription>
 235       signin_host_zoom_map_subscription_;
 236   ScopedObserver<HostContentSettingsMap, content_settings::Observer> observer_;
 237
 238   DISALLOW_COPY_AND_ASSIGN(ContentSettingsHandler);
 239 };
 240
 241 }  // namespace options
 242
 243 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CONTENT_SETTINGS_HANDLER_H_