| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef EXTENSIONS_BROWSER_DECLARATIVE_USER_SCRIPT_MANAGER_H_ |
| #define EXTENSIONS_BROWSER_DECLARATIVE_USER_SCRIPT_MANAGER_H_ |
| |
| #include <map> |
| |
| #include "base/macros.h" |
| #include "base/memory/linked_ptr.h" |
| #include "base/scoped_observer.h" |
| #include "components/keyed_service/core/keyed_service.h" |
| #include "extensions/browser/extension_registry_observer.h" |
| #include "extensions/common/host_id.h" |
| |
| namespace content { |
| class BrowserContext; |
| } |
| |
| namespace extensions { |
| class DeclarativeUserScriptMaster; |
| |
| // Manages a set of DeclarativeUserScriptMaster objects for script injections. |
| class DeclarativeUserScriptManager : public KeyedService, |
| public ExtensionRegistryObserver { |
| public: |
| explicit DeclarativeUserScriptManager( |
| content::BrowserContext* browser_context); |
| ~DeclarativeUserScriptManager() override; |
| |
| // Convenience method to return the DeclarativeUserScriptManager for a given |
| // |context|. |
| static DeclarativeUserScriptManager* Get(content::BrowserContext* context); |
| |
| // Gets the user script master for declarative scripts by the given |
| // HostID; if one does not exist, a new object will be created. |
| DeclarativeUserScriptMaster* GetDeclarativeUserScriptMasterByID( |
| const HostID& host_id); |
| |
| private: |
| using UserScriptMasterMap = |
| std::map<HostID, linked_ptr<DeclarativeUserScriptMaster>>; |
| |
| // ExtensionRegistryObserver: |
| void OnExtensionUnloaded(content::BrowserContext* browser_context, |
| const Extension* extension, |
| UnloadedExtensionInfo::Reason reason) override; |
| |
| // Creates a DeclarativeUserScriptMaster object. |
| DeclarativeUserScriptMaster* CreateDeclarativeUserScriptMaster( |
| const HostID& host_id); |
| |
| // A map of DeclarativeUserScriptMasters for each host; each master |
| // is lazily initialized. |
| UserScriptMasterMap declarative_user_script_masters_; |
| |
| content::BrowserContext* browser_context_; |
| |
| ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver> |
| extension_registry_observer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeclarativeUserScriptManager); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // EXTENSIONS_BROWSER_DECLARATIVE_USER_SCRIPT_MANAGER_H_ |