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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef EXTENSIONS_BROWSER_USER_SCRIPT_LOADER_H_ | 5 #ifndef EXTENSIONS_BROWSER_USER_SCRIPT_LOADER_H_ |
6 #define EXTENSIONS_BROWSER_USER_SCRIPT_LOADER_H_ | 6 #define EXTENSIONS_BROWSER_USER_SCRIPT_LOADER_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <memory> | 9 #include <memory> |
10 #include <set> | 10 #include <set> |
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35 // Manages one "logical unit" of user scripts in shared memory by constructing a | 35 // Manages one "logical unit" of user scripts in shared memory by constructing a |
36 // new shared memory region when the set of scripts changes. Also notifies | 36 // new shared memory region when the set of scripts changes. Also notifies |
37 // renderers of new shared memory region when new renderers appear, or when | 37 // renderers of new shared memory region when new renderers appear, or when |
38 // script reloading completes. Script loading lives on the UI thread. Instances | 38 // script reloading completes. Script loading lives on the UI thread. Instances |
39 // of this class are embedded within classes with names ending in | 39 // of this class are embedded within classes with names ending in |
40 // UserScriptMaster. These "master" classes implement the strategy for which | 40 // UserScriptMaster. These "master" classes implement the strategy for which |
41 // scripts to load/unload on this logical unit of scripts. | 41 // scripts to load/unload on this logical unit of scripts. |
42 class UserScriptLoader : public content::NotificationObserver { | 42 class UserScriptLoader : public content::NotificationObserver { |
43 public: | 43 public: |
44 using LoadScriptsCallback = | 44 using LoadScriptsCallback = |
45 base::Callback<void(std::unique_ptr<UserScriptList>, | 45 base::OnceCallback<void(std::unique_ptr<UserScriptList>, |
46 std::unique_ptr<base::SharedMemory>)>; | 46 std::unique_ptr<base::SharedMemory>)>; |
47 class Observer { | 47 class Observer { |
48 public: | 48 public: |
49 virtual void OnScriptsLoaded(UserScriptLoader* loader) = 0; | 49 virtual void OnScriptsLoaded(UserScriptLoader* loader) = 0; |
50 virtual void OnUserScriptLoaderDestroyed(UserScriptLoader* loader) = 0; | 50 virtual void OnUserScriptLoaderDestroyed(UserScriptLoader* loader) = 0; |
51 }; | 51 }; |
52 | 52 |
53 // Parses the includes out of |script| and returns them in |includes|. | 53 // Parses the includes out of |script| and returns them in |includes|. |
54 static bool ParseMetadataHeader(const base::StringPiece& script_text, | 54 static bool ParseMetadataHeader(const base::StringPiece& script_text, |
55 UserScript* script); | 55 UserScript* script); |
56 | 56 |
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181 base::ObserverList<Observer> observers_; | 181 base::ObserverList<Observer> observers_; |
182 | 182 |
183 base::WeakPtrFactory<UserScriptLoader> weak_factory_; | 183 base::WeakPtrFactory<UserScriptLoader> weak_factory_; |
184 | 184 |
185 DISALLOW_COPY_AND_ASSIGN(UserScriptLoader); | 185 DISALLOW_COPY_AND_ASSIGN(UserScriptLoader); |
186 }; | 186 }; |
187 | 187 |
188 } // namespace extensions | 188 } // namespace extensions |
189 | 189 |
190 #endif // EXTENSIONS_BROWSER_USER_SCRIPT_LOADER_H_ | 190 #endif // EXTENSIONS_BROWSER_USER_SCRIPT_LOADER_H_ |
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