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 "chrome/browser/extensions/user_script_loader.h"
12#include "extensions/browser/extension_registry_observer.h"
13#include "extensions/common/extension.h"
14#include "extensions/common/user_script.h"
15
16namespace content {
17class BrowserContext;
18}
19
20class Profile;
21
22namespace extensions {
23
24class 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.
29class SharedUserScriptMaster : public ExtensionRegistryObserver {
30 public:
31  explicit SharedUserScriptMaster(Profile* profile);
32  virtual ~SharedUserScriptMaster();
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  virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
40                                 const Extension* extension) OVERRIDE;
41  virtual void OnExtensionUnloaded(
42      content::BrowserContext* browser_context,
43      const Extension* extension,
44      UnloadedExtensionInfo::Reason reason) OVERRIDE;
45
46  // Gets an extension's scripts' metadata; i.e., gets a list of UserScript
47  // objects that contains script info, but not the contents of the scripts.
48  const std::set<UserScript> GetScriptsMetadata(const Extension* extension);
49
50  // Script loader that handles loading contents of scripts into shared memory
51  // and notifying renderers of scripts in shared memory.
52  UserScriptLoader loader_;
53
54  // The profile for which the scripts managed here are installed.
55  Profile* profile_;
56
57  ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
58      extension_registry_observer_;
59
60  DISALLOW_COPY_AND_ASSIGN(SharedUserScriptMaster);
61};
62
63}  // namespace extensions
64
65#endif  // CHROME_BROWSER_EXTENSIONS_SHARED_USER_SCRIPT_MASTER_H_
66