src/chrome/browser/notifications/desktop_notification_service.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_NOTIFICATIONS_DESKTOP_NOTIFICATION_SERVICE_H_
   6 #define CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATION_SERVICE_H_
   7
   8 #include <set>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/basictypes.h"
  13 #include "base/callback_forward.h"
  14 #include "base/memory/ref_counted.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/memory/weak_ptr.h"
  17 #include "base/prefs/pref_member.h"
  18 #include "base/scoped_observer.h"
  19 #include "base/strings/string16.h"
  20 #include "chrome/browser/content_settings/content_settings_provider.h"
  21 #include "chrome/browser/content_settings/permission_context_base.h"
  22 #include "chrome/browser/notifications/extension_welcome_notification.h"
  23 #include "chrome/common/content_settings.h"
  24 #include "components/keyed_service/core/keyed_service.h"
  25 #include "extensions/browser/extension_registry_observer.h"
  26 #include "third_party/WebKit/public/platform/WebNotificationPermission.h"
  27 #include "third_party/WebKit/public/web/WebTextDirection.h"
  28 #include "ui/message_center/notifier_settings.h"
  29 #include "url/gurl.h"
  30
  31 class ContentSettingsPattern;
  32 class Notification;
  33 class NotificationDelegate;
  34 class NotificationUIManager;
  35 class Profile;
  36
  37 namespace content {
  38 class DesktopNotificationDelegate;
  39 class RenderFrameHost;
  40 struct ShowDesktopNotificationHostMsgParams;
  41 }
  42
  43 namespace extensions {
  44 class ExtensionRegistry;
  45 }
  46
  47 namespace gfx {
  48 class Image;
  49 }
  50
  51 namespace user_prefs {
  52 class PrefRegistrySyncable;
  53 }
  54
  55 // Callback to be invoked when the result of a permission request is known.
  56 typedef base::Callback<void(blink::WebNotificationPermission)>
  57     NotificationPermissionCallback;
  58
  59 // The DesktopNotificationService is an object, owned by the Profile,
  60 // which provides the creation of desktop "toasts" to web pages and workers.
  61 class DesktopNotificationService
  62     : public PermissionContextBase,
  63       public extensions::ExtensionRegistryObserver {
  64  public:
  65   // Register profile-specific prefs of notifications.
  66   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* prefs);
  67
  68   DesktopNotificationService(Profile* profile,
  69                              NotificationUIManager* ui_manager);
  70   virtual ~DesktopNotificationService();
  71
  72   // Requests Web Notification permission for |requesting_frame|. The |callback|
  73   // will be invoked after the user has made a decision.
  74   void RequestNotificationPermission(
  75       content::WebContents* web_contents,
  76       const PermissionRequestID& request_id,
  77       const GURL& requesting_frame,
  78       bool user_gesture,
  79       const NotificationPermissionCallback& callback);
  80
  81   // Show a desktop notification. If |cancel_callback| is non-null, it's set to
  82   // a callback which can be used to cancel the notification.
  83   void ShowDesktopNotification(
  84       const content::ShowDesktopNotificationHostMsgParams& params,
  85       content::RenderFrameHost* render_frame_host,
  86       scoped_ptr<content::DesktopNotificationDelegate> delegate,
  87       base::Closure* cancel_callback);
  88
  89   // Creates a data:xxxx URL which contains the full HTML for a notification
  90   // using supplied icon, title, and text, run through a template which contains
  91   // the standard formatting for notifications.
  92   static base::string16 CreateDataUrl(const GURL& icon_url,
  93                                       const base::string16& title,
  94                                       const base::string16& body,
  95                                       blink::WebTextDirection dir);
  96
  97   // Creates a data:xxxx URL which contains the full HTML for a notification
  98   // using resource template which contains the standard formatting for
  99   // notifications.
 100   static base::string16 CreateDataUrl(int resource,
 101                                 const std::vector<std::string>& subst);
 102
 103   // Add a desktop notification.
 104   static std::string AddIconNotification(const GURL& origin_url,
 105                                          const base::string16& title,
 106                                          const base::string16& message,
 107                                          const gfx::Image& icon,
 108                                          const base::string16& replace_id,
 109                                          NotificationDelegate* delegate,
 110                                          Profile* profile);
 111
 112   // Returns true if the notifier with |notifier_id| is allowed to send
 113   // notifications.
 114   bool IsNotifierEnabled(const message_center::NotifierId& notifier_id);
 115
 116   // Updates the availability of the notifier.
 117   void SetNotifierEnabled(const message_center::NotifierId& notifier_id,
 118                           bool enabled);
 119
 120   // Adds in a the welcome notification if required for components built
 121   // into Chrome that show notifications like Chrome Now.
 122   void ShowWelcomeNotificationIfNecessary(const Notification& notification);
 123
 124  private:
 125   // Returns a display name for an origin in the process id, to be used in
 126   // permission infobar or on the frame of the notification toast.  Different
 127   // from the origin itself when dealing with extensions.
 128   base::string16 DisplayNameForOriginInProcessId(const GURL& origin,
 129                                                  int process_id);
 130   NotificationUIManager* GetUIManager();
 131
 132   // Called when the string list pref has been changed.
 133   void OnStringListPrefChanged(
 134       const char* pref_name, std::set<std::string>* ids_field);
 135
 136   // Called when the disabled_extension_id pref has been changed.
 137   void OnDisabledExtensionIdsChanged();
 138
 139   // Used as a callback once a permission has been decided to convert |allowed|
 140   // to one of the blink::WebNotificationPermission values.
 141   void OnNotificationPermissionRequested(
 142       const base::Callback<void(blink::WebNotificationPermission)>& callback,
 143       bool allowed);
 144
 145   void FirePermissionLevelChangedEvent(
 146       const message_center::NotifierId& notifier_id,
 147       bool enabled);
 148
 149   // extensions::ExtensionRegistryObserver:
 150   virtual void OnExtensionUninstalled(
 151       content::BrowserContext* browser_context,
 152       const extensions::Extension* extension,
 153       extensions::UninstallReason reason) OVERRIDE;
 154
 155   // PermissionContextBase:
 156   virtual void UpdateContentSetting(const GURL& requesting_origin,
 157                                     const GURL& embedder_origin,
 158                                     bool allowed) OVERRIDE;
 159
 160   // The profile which owns this object.
 161   Profile* profile_;
 162
 163   // Non-owned pointer to the notification manager which manages the
 164   // UI for desktop toasts.
 165   NotificationUIManager* ui_manager_;
 166
 167   // Prefs listener for disabled_extension_id.
 168   StringListPrefMember disabled_extension_id_pref_;
 169
 170   // Prefs listener for disabled_system_component_id.
 171   StringListPrefMember disabled_system_component_id_pref_;
 172
 173   // On-memory data for the availability of extensions.
 174   std::set<std::string> disabled_extension_ids_;
 175
 176   // On-memory data for the availability of system_component.
 177   std::set<std::string> disabled_system_component_ids_;
 178
 179   // An observer to listen when extension is uninstalled.
 180   ScopedObserver<extensions::ExtensionRegistry,
 181                  extensions::ExtensionRegistryObserver>
 182       extension_registry_observer_;
 183
 184   // Welcome Notification
 185   scoped_ptr<ExtensionWelcomeNotification> chrome_now_welcome_notification_;
 186
 187   base::WeakPtrFactory<DesktopNotificationService> weak_factory_;
 188
 189   DISALLOW_COPY_AND_ASSIGN(DesktopNotificationService);
 190 };
 191
 192 #endif  // CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATION_SERVICE_H_