src/xwalk/extensions/common/xwalk_external_instance.h

   1 // Copyright (c) 2013 Intel Corporation. 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 XWALK_EXTENSIONS_COMMON_XWALK_EXTERNAL_INSTANCE_H_
   6 #define XWALK_EXTENSIONS_COMMON_XWALK_EXTERNAL_INSTANCE_H_
   7
   8 #include <string>
   9 #include "xwalk/extensions/common/xwalk_extension.h"
  10 #include "xwalk/extensions/public/XW_Extension.h"
  11 #include "xwalk/extensions/public/XW_Extension_SyncMessage.h"
  12
  13 namespace xwalk {
  14 namespace extensions {
  15
  16 class XWalkExternalAdapter;
  17 class XWalkExternalExtension;
  18
  19 // XWalkExternalInstance implements the concrete context of execution of an
  20 // external extension.
  21 //
  22 // It works together with XWalkExternalAdapter to handle calls from shared
  23 // library, and with XWalkExternalExtension to get the appropriate
  24 // callbacks. The associated XW_Instance is used to identify this context when
  25 // calling the shared library.
  26 class XWalkExternalInstance : public XWalkExtensionInstance {
  27  public:
  28   XWalkExternalInstance(XWalkExternalExtension* extension,
  29                         XW_Instance xw_instance);
  30   virtual ~XWalkExternalInstance();
  31
  32  private:
  33   friend class XWalkExternalAdapter;
  34
  35   // XWalkExtensionInstance implementation.
  36   void HandleMessage(scoped_ptr<base::Value> msg) override;
  37   void HandleSyncMessage(scoped_ptr<base::Value> msg) override;
  38
  39   // XW_CoreInterface_1 (from XW_Extension.h) implementation.
  40   void CoreSetInstanceData(void* data);
  41   void* CoreGetInstanceData();
  42
  43   // XW_MessagingInterface_1 (from XW_Extension.h) implementation.
  44   void MessagingPostMessage(const char* msg);
  45
  46   // XW_Internal_SyncMessagingInterface_1 (from XW_Extension_SyncMessage.h)
  47   // implementation.
  48   void SyncMessagingSetSyncReply(const char* reply);
  49
  50   XW_Instance xw_instance_;
  51   std::string sync_reply_;
  52   XWalkExternalExtension* extension_;
  53   void* instance_data_;
  54   bool is_handling_sync_msg_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(XWalkExternalInstance);
  57 };
  58
  59 }  // namespace extensions
  60 }  // namespace xwalk
  61
  62 #endif  // XWALK_EXTENSIONS_COMMON_XWALK_EXTERNAL_INSTANCE_H_