chrome/browser/extensions/shared_user_script_master.h

   1 // Copyright 2014 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_SHARED_USER_SCRIPT_MASTER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_SHARED_USER_SCRIPT_MASTER_H_
   7
   8 #include <set>
   9
  10 #include "base/scoped_observer.h"
  11 #include "extensions/browser/extension_registry_observer.h"
  12 #include "extensions/browser/extension_user_script_loader.h"
  13 #include "extensions/common/extension.h"
  14 #include "extensions/common/user_script.h"
  15
  16 namespace content {
  17 class BrowserContext;
  18 }
  19
  20 class Profile;
  21
  22 namespace extensions {
  23
  24 class ExtensionRegistry;
  25
  26 // Manages statically-defined user scripts for all extensions. Owns a
  27 // UserScriptLoader to which file loading and shared memory management
  28 // operations are delegated.
  29 class SharedUserScriptMaster : public ExtensionRegistryObserver {
  30  public:
  31   explicit SharedUserScriptMaster(Profile* profile);
  32   ~SharedUserScriptMaster() override;
  33
  34   // Provides access to loader state method: scripts_ready().
  35   bool scripts_ready() const { return loader_.scripts_ready(); }
  36
  37  private:
  38   // ExtensionRegistryObserver implementation.
  39   void OnExtensionLoaded(content::BrowserContext* browser_context,
  40                          const Extension* extension) override;
  41   void OnExtensionUnloaded(content::BrowserContext* browser_context,
  42                            const Extension* extension,
  43                            UnloadedExtensionInfo::Reason reason) override;
  44
  45   // Gets an extension's scripts' metadata; i.e., gets a list of UserScript
  46   // objects that contains script info, but not the contents of the scripts.
  47   const std::set<UserScript> GetScriptsMetadata(const Extension* extension);
  48
  49   // Script loader that handles loading contents of scripts into shared memory
  50   // and notifying renderers of scripts in shared memory.
  51   ExtensionUserScriptLoader loader_;
  52
  53   // The profile for which the scripts managed here are installed.
  54   Profile* profile_;
  55
  56   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
  57       extension_registry_observer_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(SharedUserScriptMaster);
  60 };
  61
  62 }  // namespace extensions
  63
  64 #endif  // CHROME_BROWSER_EXTENSIONS_SHARED_USER_SCRIPT_MASTER_H_