content/browser/loader/navigation_resource_handler.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 CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_HANDLER_H_
   6 #define CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_HANDLER_H_
   7
   8 #include "base/macros.h"
   9 #include "content/browser/loader/resource_handler.h"
  10 #include "content/browser/loader/stream_writer.h"
  11
  12 namespace content {
  13
  14 class NavigationURLLoaderImplCore;
  15
  16 // PlzNavigate: The leaf ResourceHandler used with NavigationURLLoaderImplCore.
  17 class NavigationResourceHandler : public ResourceHandler {
  18  public:
  19   NavigationResourceHandler(net::URLRequest* request,
  20                             NavigationURLLoaderImplCore* core);
  21   ~NavigationResourceHandler() override;
  22
  23   // Called by the loader the cancel the request.
  24   void Cancel();
  25
  26   // Called to the loader to resume a paused redirect.
  27   void FollowRedirect();
  28
  29   // ResourceHandler implementation.
  30   void SetController(ResourceController* controller) override;
  31   bool OnRequestRedirected(const net::RedirectInfo& redirect_info,
  32                            ResourceResponse* response,
  33                            bool* defer) override;
  34   bool OnResponseStarted(ResourceResponse* response, bool* defer) override;
  35   bool OnWillStart(const GURL& url, bool* defer) override;
  36   bool OnBeforeNetworkStart(const GURL& url, bool* defer) override;
  37   bool OnWillRead(scoped_refptr<net::IOBuffer>* buf,
  38                   int* buf_size,
  39                   int min_size) override;
  40   bool OnReadCompleted(int bytes_read, bool* defer) override;
  41   void OnResponseCompleted(const net::URLRequestStatus& status,
  42                            const std::string& security_info,
  43                            bool* defer) override;
  44   void OnDataDownloaded(int bytes_downloaded) override;
  45
  46  private:
  47   // Clears |core_| and its reference to the resource handler. After calling
  48   // this, the lifetime of the request is no longer tied to |core_|.
  49   void DetachFromCore();
  50
  51   NavigationURLLoaderImplCore* core_;
  52   StreamWriter writer_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(NavigationResourceHandler);
  55 };
  56
  57 }  // namespace content
  58
  59 #endif  // CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_HANDLER_H_