chrome/browser/extensions/declarative_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_DECLARATIVE_USER_SCRIPT_MASTER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_DECLARATIVE_USER_SCRIPT_MASTER_H_
   7
   8 #include "base/scoped_observer.h"
   9 #include "chrome/browser/extensions/extension_user_script_loader.h"
  10
  11 class Profile;
  12
  13 namespace extensions {
  14
  15 class UserScript;
  16
  17 // Manages declarative user scripts for a single extension. Owns a
  18 // UserScriptLoader to which file loading and shared memory management
  19 // operations are delegated, and provides an interface for adding, removing,
  20 // and clearing scripts.
  21 class DeclarativeUserScriptMaster {
  22  public:
  23   DeclarativeUserScriptMaster(Profile* profile, const HostID& host_id);
  24   ~DeclarativeUserScriptMaster();
  25
  26   // Adds script to shared memory region. This may not happen right away if a
  27   // script load is in progress.
  28   void AddScript(const UserScript& script);
  29
  30   // Removes script from shared memory region. This may not happen right away if
  31   // a script load is in progress.
  32   void RemoveScript(const UserScript& script);
  33
  34   // Removes all scripts from shared memory region. This may not happen right
  35   // away if a script load is in progress.
  36   void ClearScripts();
  37
  38   const HostID& host_id() const { return host_id_; }
  39
  40  private:
  41   // ID of host that owns scripts that this component manages.
  42   HostID host_id_;
  43
  44   // Script loader that handles loading contents of scripts into shared memory
  45   // and notifying renderers of script updates.
  46   ExtensionUserScriptLoader loader_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(DeclarativeUserScriptMaster);
  49 };
  50
  51 }  // namespace extensions
  52
  53 #endif  // CHROME_BROWSER_EXTENSIONS_DECLARATIVE_USER_SCRIPT_MASTER_H_