1// Copyright (c) 2012 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_CHROMEOS_DBUS_PRINTER_SERVICE_PROVIDER_H_ 6#define CHROME_BROWSER_CHROMEOS_DBUS_PRINTER_SERVICE_PROVIDER_H_ 7 8#include <string> 9 10#include "base/memory/weak_ptr.h" 11#include "chrome/browser/chromeos/dbus/cros_dbus_service.h" 12#include "dbus/exported_object.h" 13 14namespace dbus { 15class MethodCall; 16class Response; 17} 18 19namespace chromeos { 20 21// This class provides printer service for CrosDBusService. 22// It detects attached printers and show user help page. 23// 24// The following methods are exported. 25// 26// Interface: org.chromium.LibCrosServiceInterface (kLibCrosServiceInterface) 27// Method: PrinterAdded (kPrinterAdded) 28// Parameters: string:vendor Optional, USB vendor ID. 29// string:product Optional, USB product ID. 30// 31// Display help page to advice user to use Cloud Print. 32// 33// The returned signal will contain the three values: 34// 35// This service can be manually tested dbus-send on ChromeOS. 36// 37// 1. Open a terminal and run the following: 38// 39// % dbus-send --system --type=method_call 40// --dest=org.chromium.LibCrosService /org/chromium/LibCrosService 41// org.chromium.LibCrosServiceInterface.PrinterAdded 42// string:123 string:456 43// 44// 2. Go back to ChromeOS and check if new tab with information is opened. 45 46class PrinterServiceProvider 47 : public CrosDBusService::ServiceProviderInterface { 48 public: 49 PrinterServiceProvider(); 50 virtual ~PrinterServiceProvider(); 51 52 // CrosDBusService::ServiceProviderInterface override. 53 virtual void Start( 54 scoped_refptr<dbus::ExportedObject> exported_object) OVERRIDE; 55 56 protected: 57 virtual void ShowCloudPrintHelp(const std::string& vendor, 58 const std::string& product); 59 60 private: 61 // Called from ExportedObject, when PrinterAdded() is exported as 62 // a D-Bus method, or failed to be exported. 63 void OnExported(const std::string& interface_name, 64 const std::string& method_name, 65 bool success); 66 67 // Invoked when usb printer is detected. 68 // Called on UI thread from dbus request. 69 void PrinterAdded(dbus::MethodCall* method_call, 70 dbus::ExportedObject::ResponseSender response_sender); 71 72 scoped_refptr<dbus::ExportedObject> exported_object_; 73 base::WeakPtrFactory<PrinterServiceProvider> weak_ptr_factory_; 74 75 DISALLOW_COPY_AND_ASSIGN(PrinterServiceProvider); 76}; 77 78} // namespace chromeos 79 80#endif // CHROME_BROWSER_CHROMEOS_DBUS_PRINTER_SERVICE_PROVIDER_H_ 81 82