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      1 // Copyright 2013 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 CLOUD_PRINT_GCP20_PROTOTYPE_CLOUD_PRINT_REQUEST_H_
      6 #define CLOUD_PRINT_GCP20_PROTOTYPE_CLOUD_PRINT_REQUEST_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/callback.h"
     12 #include "base/memory/weak_ptr.h"
     13 #include "net/url_request/url_fetcher.h"
     14 #include "net/url_request/url_fetcher_delegate.h"
     15 
     16 // Request to CloudPrint with timeout control.
     17 // Delegate should delete this object once it is deleting.
     18 class CloudPrintRequest : public net::URLFetcherDelegate,
     19                           public base::SupportsWeakPtr<CloudPrintRequest> {
     20  public:
     21   class Delegate {
     22    public:
     23     Delegate() {}
     24     virtual ~Delegate() {}
     25 
     26     // Invoked when |fetcher_| finished fetching successfully.
     27     // Use for erasing instance of CloudPrintRequest class.
     28     virtual void OnFetchComplete(const std::string& response) = 0;
     29 
     30     // Invoked when |fetcher_| finished fetching successfully.
     31     // Use for erasing instance of CloudPrintRequest class.
     32     virtual void OnFetchError(const std::string& server_api,
     33                               int server_code,
     34                               int server_http_code) = 0;
     35 
     36     // Invoked when timeout is reached.
     37     // Use for erasing instance of CloudPrintRequest class.
     38     virtual void OnFetchTimeoutReached() = 0;
     39   };
     40 
     41   virtual ~CloudPrintRequest();
     42 
     43   // Creates GET request.
     44   static scoped_ptr<CloudPrintRequest> CreateGet(const GURL& url,
     45                                                  Delegate* delegate);
     46 
     47   // Creates POST request.
     48   static scoped_ptr<CloudPrintRequest> CreatePost(const GURL& url,
     49                                                   const std::string& content,
     50                                                   const std::string& mimetype,
     51                                                   Delegate* delegate);
     52 
     53   // Starts request. Once fetch was completed, parser will be called.
     54   void Run(const std::string& access_token,
     55            scoped_refptr<net::URLRequestContextGetter> context_getter);
     56 
     57   // Add header to request.
     58   void AddHeader(const std::string& header);
     59 
     60  private:
     61   CloudPrintRequest(const GURL& url,
     62                     net::URLFetcher::RequestType method,
     63                     Delegate* delegate);
     64 
     65   // net::URLFetcherDelegate methods:
     66   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
     67 
     68   // Method for handling timeout.
     69   void OnRequestTimeout();
     70 
     71   scoped_ptr<net::URLFetcher> fetcher_;
     72 
     73   Delegate* delegate_;
     74 
     75   DISALLOW_COPY_AND_ASSIGN(CloudPrintRequest);
     76 };
     77 
     78 #endif  // CLOUD_PRINT_GCP20_PROTOTYPE_CLOUD_PRINT_REQUEST_H_
     79 
     80