chrome/browser/extensions/navigation_observer.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_EXTENSIONS_NAVIGATION_OBSERVER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_NAVIGATION_OBSERVER_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "base/memory/scoped_ptr.h"
  12 #include "chrome/browser/extensions/extension_install_prompt.h"
  13 #include "content/public/browser/notification_observer.h"
  14 #include "content/public/browser/notification_registrar.h"
  15
  16 class Profile;
  17
  18 namespace content {
  19 class NavigationController;
  20 }
  21
  22 namespace extensions {
  23
  24 // The NavigationObserver listens to navigation notifications. If the user
  25 // navigates into an extension that has been disabled due to a permission
  26 // increase, it prompts the user to accept the new permissions and re-enables
  27 // the extension.
  28 class NavigationObserver : public ExtensionInstallPrompt::Delegate,
  29                            public content::NotificationObserver {
  30  public:
  31   explicit NavigationObserver(Profile* profile);
  32   ~NavigationObserver() override;
  33
  34   // content::NotificationObserver
  35   void Observe(int type,
  36                const content::NotificationSource& source,
  37                const content::NotificationDetails& details) override;
  38
  39  private:
  40   // Registers for the NOTIFICATION_NAV_ENTRY_COMMITTED notification.
  41   void RegisterForNotifications();
  42
  43   // Checks if |nav_controller| has entered an extension's web extent. If it
  44   // has and the extension is disabled due to a permissions increase, this
  45   // prompts the user to accept the new permissions and enables the extension.
  46   void PromptToEnableExtensionIfNecessary(
  47       content::NavigationController* nav_controller);
  48
  49   // ExtensionInstallPrompt::Delegate callbacks used for the permissions prompt.
  50   void InstallUIProceed() override;
  51   void InstallUIAbort(bool user_initiated) override;
  52
  53   content::NotificationRegistrar registrar_;
  54
  55   Profile* profile_;
  56
  57   // The UI used to confirm enabling extensions.
  58   scoped_ptr<ExtensionInstallPrompt> extension_install_prompt_;
  59
  60   // The data we keep track of when prompting to enable extensions.
  61   std::string in_progress_prompt_extension_id_;
  62   content::NavigationController* in_progress_prompt_navigation_controller_;
  63
  64   // The extension ids we've already prompted the user about.
  65   std::set<std::string> prompted_extensions_;
  66
  67   DISALLOW_COPY_AND_ASSIGN(NavigationObserver);
  68 };
  69
  70 }  // namespace extensions
  71
  72 #endif  // CHROME_BROWSER_EXTENSIONS_NAVIGATION_OBSERVER_H_