components/nacl/renderer/nexe_load_manager.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 COMPONENTS_NACL_RENDERER_NEXE_LOAD_MANAGER_H_
   6 #define COMPONENTS_NACL_RENDERER_NEXE_LOAD_MANAGER_H_
   7
   8 #include <string>
   9
  10 #include "base/macros.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/weak_ptr.h"
  13
  14 #include "ppapi/c/private/ppb_nacl_private.h"
  15
  16 namespace content {
  17 class PepperPluginInstance;
  18 }
  19
  20 namespace nacl {
  21
  22 class TrustedPluginChannel;
  23
  24 // NexeLoadManager provides methods for reporting the progress of loading a
  25 // nexe.
  26 class NexeLoadManager {
  27  public:
  28   explicit NexeLoadManager(PP_Instance instance);
  29   ~NexeLoadManager();
  30
  31   void ReportLoadError(PP_NaClError error,
  32                        const std::string& error_message,
  33                        bool is_installed);
  34
  35   // TODO(dmichael): Everything below this comment should eventually be made
  36   // private, when ppb_nacl_private_impl.cc is no longer using them directly.
  37   // The intent is for this class to only expose functions for reporting a
  38   // load state transition (e.g., ReportLoadError, ReportProgress,
  39   // ReportLoadAbort, etc.)
  40   struct ProgressEvent {
  41     explicit ProgressEvent(PP_NaClEventType event_type_param)
  42         : event_type(event_type_param),
  43           length_is_computable(false),
  44           loaded_bytes(0),
  45           total_bytes(0) {
  46     }
  47     PP_Instance instance;
  48     PP_NaClEventType event_type;
  49     std::string resource_url;
  50     bool length_is_computable;
  51     uint64_t loaded_bytes;
  52     uint64_t total_bytes;
  53   };
  54   void DispatchEvent(const ProgressEvent &event);
  55   void set_trusted_plugin_channel(scoped_ptr<TrustedPluginChannel> channel);
  56
  57  private:
  58   DISALLOW_COPY_AND_ASSIGN(NexeLoadManager);
  59
  60   PP_Instance pp_instance_;
  61
  62   // Non-owning.
  63   content::PepperPluginInstance* plugin_instance_;
  64
  65   scoped_ptr<TrustedPluginChannel> trusted_plugin_channel_;
  66   base::WeakPtrFactory<NexeLoadManager> weak_factory_;
  67 };
  68
  69 }  // namespace nacl
  70
  71 #endif  // COMPONENTS_NACL_RENDERER_NEXE_LOAD_MANAGER_H_