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1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2008 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 CHROME_BROWSER_EXTENSIONS_USER_SCRIPT_MASTER_H_ | 5 #ifndef CHROME_BROWSER_EXTENSIONS_USER_SCRIPT_MASTER_H_ |
6 #define CHROME_BROWSER_EXTENSIONS_USER_SCRIPT_MASTER_H_ | 6 #define CHROME_BROWSER_EXTENSIONS_USER_SCRIPT_MASTER_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "base/directory_watcher.h" | 10 #include "base/directory_watcher.h" |
11 #include "base/file_path.h" | 11 #include "base/file_path.h" |
12 #include "base/scoped_ptr.h" | 12 #include "base/scoped_ptr.h" |
13 #include "base/shared_memory.h" | 13 #include "base/shared_memory.h" |
14 #include "chrome/common/extensions/user_script.h" | 14 #include "chrome/common/extensions/user_script.h" |
15 #include "chrome/common/notification_registrar.h" | 15 #include "chrome/common/notification_registrar.h" |
16 #include "testing/gtest/include/gtest/gtest_prod.h" | 16 #include "testing/gtest/include/gtest/gtest_prod.h" |
17 | 17 |
18 class MessageLoop; | 18 class MessageLoop; |
| 19 namespace base { |
19 class StringPiece; | 20 class StringPiece; |
| 21 } |
20 | 22 |
21 // Manages a segment of shared memory that contains the user scripts the user | 23 // Manages a segment of shared memory that contains the user scripts the user |
22 // has installed. Lives on the UI thread. | 24 // has installed. Lives on the UI thread. |
23 class UserScriptMaster : public base::RefCounted<UserScriptMaster>, | 25 class UserScriptMaster : public base::RefCounted<UserScriptMaster>, |
24 public DirectoryWatcher::Delegate, | 26 public DirectoryWatcher::Delegate, |
25 public NotificationObserver { | 27 public NotificationObserver { |
26 public: | 28 public: |
27 // For testability, the constructor takes the MessageLoop to run the | 29 // For testability, the constructor takes the MessageLoop to run the |
28 // script-reloading worker on as well as the path the scripts live in. | 30 // script-reloading worker on as well as the path the scripts live in. |
29 // These are normally the file thread and a directory inside the profile. | 31 // These are normally the file thread and a directory inside the profile. |
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63 // We reload user scripts on the file thread to prevent blocking the UI. | 65 // We reload user scripts on the file thread to prevent blocking the UI. |
64 // ScriptReloader lives on the file thread and does the reload | 66 // ScriptReloader lives on the file thread and does the reload |
65 // work, and then sends a message back to its master with a new SharedMemory*. | 67 // work, and then sends a message back to its master with a new SharedMemory*. |
66 // ScriptReloader is the worker that manages running the script scan | 68 // ScriptReloader is the worker that manages running the script scan |
67 // on the file thread. It must be created on, and its public API must only be | 69 // on the file thread. It must be created on, and its public API must only be |
68 // called from, the master's thread. | 70 // called from, the master's thread. |
69 class ScriptReloader | 71 class ScriptReloader |
70 : public base::RefCounted<UserScriptMaster::ScriptReloader> { | 72 : public base::RefCounted<UserScriptMaster::ScriptReloader> { |
71 public: | 73 public: |
72 // Parses the includes out of |script| and returns them in |includes|. | 74 // Parses the includes out of |script| and returns them in |includes|. |
73 static bool ParseMetadataHeader(const StringPiece& script_text, | 75 static bool ParseMetadataHeader(const base::StringPiece& script_text, |
74 UserScript* script); | 76 UserScript* script); |
75 | 77 |
76 static void LoadScriptsFromDirectory(const FilePath& script_dir, | 78 static void LoadScriptsFromDirectory(const FilePath& script_dir, |
77 UserScriptList* result); | 79 UserScriptList* result); |
78 | 80 |
79 explicit ScriptReloader(UserScriptMaster* master); | 81 explicit ScriptReloader(UserScriptMaster* master); |
80 | 82 |
81 // Start a scan for scripts. | 83 // Start a scan for scripts. |
82 // Will always send a message to the master upon completion. | 84 // Will always send a message to the master upon completion. |
83 void StartScan(MessageLoop* work_loop, const FilePath& script_dir, | 85 void StartScan(MessageLoop* work_loop, const FilePath& script_dir, |
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154 | 156 |
155 // If the script directory is modified while we're rescanning it, we note | 157 // If the script directory is modified while we're rescanning it, we note |
156 // that we're currently mid-scan and then start over again once the scan | 158 // that we're currently mid-scan and then start over again once the scan |
157 // finishes. This boolean tracks whether another scan is pending. | 159 // finishes. This boolean tracks whether another scan is pending. |
158 bool pending_scan_; | 160 bool pending_scan_; |
159 | 161 |
160 DISALLOW_COPY_AND_ASSIGN(UserScriptMaster); | 162 DISALLOW_COPY_AND_ASSIGN(UserScriptMaster); |
161 }; | 163 }; |
162 | 164 |
163 #endif // CHROME_BROWSER_EXTENSIONS_USER_SCRIPT_MASTER_H_ | 165 #endif // CHROME_BROWSER_EXTENSIONS_USER_SCRIPT_MASTER_H_ |
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