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      1 // Copyright (c) 2012 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 PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_
      6 #define PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/callback.h"
     10 #include "ppapi/c/ppp_instance.h"
     11 #include "ppapi/shared_impl/ppapi_shared_export.h"
     12 
     13 namespace ppapi {
     14 
     15 // This exposes the 1.1 interface and forwards it to the 1.0 interface is
     16 // necessary.
     17 struct PPAPI_SHARED_EXPORT PPP_Instance_Combined {
     18  public:
     19   // Create a PPP_Instance_Combined. Uses the given |get_interface_func| to
     20   // query the plugin and find the most recent version of the PPP_Instance
     21   // interface. If the plugin doesn't support any PPP_Instance interface,
     22   // returns NULL.
     23   static PPP_Instance_Combined* Create(
     24       base::Callback<const void*(const char*)> get_plugin_if);
     25 
     26   PP_Bool DidCreate(PP_Instance instance,
     27                     uint32_t argc,
     28                     const char* argn[],
     29                     const char* argv[]);
     30   void DidDestroy(PP_Instance instance);
     31 
     32   // This version of DidChangeView encapsulates all arguments for both 1.0
     33   // and 1.1 versions of this function. Conversion from 1.1 -> 1.0 is easy,
     34   // but this class doesn't have the necessary context (resource interfaces)
     35   // to do the conversion, so the caller must do it.
     36   void DidChangeView(PP_Instance instance,
     37                      PP_Resource view_changed_resource,
     38                      const struct PP_Rect* position,
     39                      const struct PP_Rect* clip);
     40 
     41   void DidChangeFocus(PP_Instance instance, PP_Bool has_focus);
     42   PP_Bool HandleDocumentLoad(PP_Instance instance, PP_Resource url_loader);
     43 
     44  private:
     45   explicit PPP_Instance_Combined(const PPP_Instance_1_0& instance_if);
     46   explicit PPP_Instance_Combined(const PPP_Instance_1_1& instance_if);
     47 
     48   // For version 1.0, DidChangeView will be NULL, and DidChangeView_1_0 will
     49   // be set below.
     50   PPP_Instance_1_1 instance_1_1_;
     51 
     52   // Non-NULL when Instance 1.0 is used.
     53   void (*did_change_view_1_0_)(PP_Instance instance,
     54                                const struct PP_Rect* position,
     55                                const struct PP_Rect* clip);
     56 
     57   DISALLOW_COPY_AND_ASSIGN(PPP_Instance_Combined);
     58 };
     59 
     60 }  // namespace ppapi
     61 
     62 #endif  // PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_
     63