content/browser/frame_host/navigation_request.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_FRAME_HOST_NAVIGATION_REQUEST_H_
   6 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_REQUEST_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "content/browser/frame_host/navigation_request_info.h"
  11
  12 namespace content {
  13 class ResourceRequestBody;
  14
  15 // PlzNavigate
  16 // A UI thread object that owns a navigation request until it commits. It
  17 // ensures the UI thread can start a navigation request in the
  18 // ResourceDispatcherHost (that lives on the IO thread).
  19 // TODO(clamy): Describe the interactions between the UI and IO thread during
  20 // the navigation following its refactoring.
  21 class NavigationRequest {
  22  public:
  23   NavigationRequest(const NavigationRequestInfo& info, int64 frame_node_id);
  24
  25   ~NavigationRequest();
  26
  27   const NavigationRequestInfo& info() const { return info_; }
  28   int64 frame_node_id() const { return frame_node_id_; }
  29
  30   // Called on the UI thread by the RenderFrameHostManager which owns the
  31   // NavigationRequest. After calling this function, |body| can no longer be
  32   // manipulated on the UI thread.
  33   void BeginNavigation(scoped_refptr<ResourceRequestBody> body);
  34
  35  private:
  36   const NavigationRequestInfo info_;
  37   const int64 frame_node_id_;
  38
  39   DISALLOW_COPY_AND_ASSIGN(NavigationRequest);
  40 };
  41
  42 }  // namespace content
  43
  44 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_REQUEST_H_