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 EXTENSIONS_BROWSER_API_API_RESOURCE_H_ 6 #define EXTENSIONS_BROWSER_API_API_RESOURCE_H_ 7 8 #include "base/basictypes.h" 9 #include "base/memory/ref_counted.h" 10 #include "content/public/browser/browser_thread.h" 11 #include "extensions/common/extension.h" 12 13 namespace extensions { 14 15 // An ApiResource represents something that an extension API manages, such as a 16 // socket or a serial-port connection. Typically, an ApiResourceManager will 17 // control the lifetime of all ApiResources of a specific derived type. 18 class ApiResource { 19 public: 20 virtual ~ApiResource(); 21 owner_extension_id()22 const std::string& owner_extension_id() const { return owner_extension_id_; } 23 24 // If this method returns |true|, the resource remains open when the 25 // owning extension is suspended due to inactivity. 26 virtual bool IsPersistent() const; 27 28 static const content::BrowserThread::ID kThreadId = 29 content::BrowserThread::IO; 30 31 protected: 32 explicit ApiResource(const std::string& owner_extension_id); 33 34 private: 35 // The extension that owns this resource. 36 const std::string owner_extension_id_; 37 38 DISALLOW_COPY_AND_ASSIGN(ApiResource); 39 }; 40 41 } // namespace extensions 42 43 #endif // EXTENSIONS_BROWSER_API_API_RESOURCE_H_ 44