chrome/browser/local_discovery/gcd_api_flow.h

   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 CHROME_BROWSER_LOCAL_DISCOVERY_GCD_API_FLOW_H_
   6 #define CHROME_BROWSER_LOCAL_DISCOVERY_GCD_API_FLOW_H_
   7
   8 #include <string>
   9
  10 #include "google_apis/gaia/oauth2_token_service.h"
  11 #include "net/url_request/url_fetcher.h"
  12 #include "net/url_request/url_request_context_getter.h"
  13
  14 namespace local_discovery {
  15
  16 // API flow for communicating with cloud print and cloud devices.
  17 class GCDApiFlow {
  18  public:
  19   // TODO(noamsml): Better error model for this class.
  20   enum Status {
  21     SUCCESS,
  22     ERROR_TOKEN,
  23     ERROR_NETWORK,
  24     ERROR_HTTP_CODE,
  25     ERROR_FROM_SERVER,
  26     ERROR_MALFORMED_RESPONSE
  27   };
  28
  29   // Provides GCDApiFlowImpl with parameters required to make request.
  30   // Parses results of requests.
  31   class Request {
  32    public:
  33     Request();
  34     virtual ~Request();
  35
  36     virtual void OnGCDAPIFlowError(Status status) = 0;
  37
  38     virtual void OnGCDAPIFlowComplete(const base::DictionaryValue& value) = 0;
  39
  40     virtual GURL GetURL() = 0;
  41
  42     virtual std::string GetOAuthScope() = 0;
  43
  44     virtual net::URLFetcher::RequestType GetRequestType();
  45
  46     virtual std::vector<std::string> GetExtraRequestHeaders() = 0;
  47
  48     // If there is no data, set upload_type and upload_data to ""
  49     virtual void GetUploadData(std::string* upload_type,
  50                                std::string* upload_data);
  51
  52    private:
  53     DISALLOW_COPY_AND_ASSIGN(Request);
  54   };
  55
  56   GCDApiFlow();
  57   virtual ~GCDApiFlow();
  58
  59   static scoped_ptr<GCDApiFlow> Create(
  60       net::URLRequestContextGetter* request_context,
  61       OAuth2TokenService* token_service,
  62       const std::string& account_id);
  63
  64   virtual void Start(scoped_ptr<Request> request) = 0;
  65
  66  private:
  67   DISALLOW_COPY_AND_ASSIGN(GCDApiFlow);
  68 };
  69
  70 class GCDApiFlowRequest : public GCDApiFlow::Request {
  71  public:
  72   GCDApiFlowRequest();
  73   ~GCDApiFlowRequest() override;
  74
  75   // GCDApiFlowRequest implementation
  76   std::string GetOAuthScope() override;
  77   std::vector<std::string> GetExtraRequestHeaders() override;
  78
  79  private:
  80   DISALLOW_COPY_AND_ASSIGN(GCDApiFlowRequest);
  81 };
  82
  83 class CloudPrintApiFlowRequest : public GCDApiFlow::Request {
  84  public:
  85   CloudPrintApiFlowRequest();
  86   ~CloudPrintApiFlowRequest() override;
  87
  88   // GCDApiFlowRequest implementation
  89   std::string GetOAuthScope() override;
  90   std::vector<std::string> GetExtraRequestHeaders() override;
  91
  92  private:
  93   DISALLOW_COPY_AND_ASSIGN(CloudPrintApiFlowRequest);
  94 };
  95
  96 }  // namespace local_discovery
  97
  98 #endif  // CHROME_BROWSER_LOCAL_DISCOVERY_GCD_API_FLOW_H_