content/public/browser/presentation_session_message.h

   1 // Copyright 2015 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_PUBLIC_BROWSER_PRESENTATION_SESSION_MESSAGE_H_
   6 #define CONTENT_PUBLIC_BROWSER_PRESENTATION_SESSION_MESSAGE_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/scoped_ptr.h"
  12 #include "content/common/content_export.h"
  13
  14 namespace content {
  15
  16 enum CONTENT_EXPORT PresentationMessageType {
  17   TEXT,
  18   ARRAY_BUFFER,
  19   BLOB,
  20 };
  21
  22 // Represents a presentation session message.
  23 // If this is a text message, |data| is null; otherwise, |message| is null.
  24 // Empty messages are allowed.
  25 struct CONTENT_EXPORT PresentationSessionMessage {
  26  public:
  27   ~PresentationSessionMessage();
  28
  29   // Creates string message, which takes the ownership of |message|.
  30   static scoped_ptr<PresentationSessionMessage> CreateStringMessage(
  31       const std::string& presentation_url,
  32       const std::string& presentation_id,
  33       scoped_ptr<std::string> message);
  34
  35   // Creates array buffer message, which takes the ownership of |data|.
  36   static scoped_ptr<PresentationSessionMessage> CreateArrayBufferMessage(
  37       const std::string& presentation_url,
  38       const std::string& presentation_id,
  39       scoped_ptr<std::vector<uint8_t>> data);
  40
  41   // Creates blob message, which takes the ownership of |data|.
  42   static scoped_ptr<PresentationSessionMessage> CreateBlobMessage(
  43       const std::string& presentation_url,
  44       const std::string& presentation_id,
  45       scoped_ptr<std::vector<uint8_t>> data);
  46
  47   bool is_binary() const;
  48   std::string presentation_url;
  49   std::string presentation_id;
  50   PresentationMessageType type;
  51   scoped_ptr<std::string> message;
  52   scoped_ptr<std::vector<uint8_t>> data;
  53
  54  private:
  55   PresentationSessionMessage(const std::string& presentation_url,
  56                              const std::string& presentation_id,
  57                              scoped_ptr<std::string> message);
  58   PresentationSessionMessage(const std::string& presentation_url,
  59                              const std::string& presentation_id,
  60                              PresentationMessageType type,
  61                              scoped_ptr<std::vector<uint8_t>> data);
  62 };
  63
  64 }  // namespace content
  65
  66 #endif  // CONTENT_PUBLIC_BROWSER_PRESENTATION_SESSION_H_