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      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 #include "content/renderer/pepper/v8object_var.h"
      6 
      7 #include "base/logging.h"
      8 #include "content/public/renderer/pepper_plugin_instance.h"
      9 #include "content/renderer/pepper/host_globals.h"
     10 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
     11 #include "ppapi/c/pp_var.h"
     12 
     13 namespace ppapi {
     14 
     15 // V8ObjectVar -----------------------------------------------------------------
     16 
     17 V8ObjectVar::V8ObjectVar(PP_Instance instance,
     18                          v8::Handle<v8::Object> v8_object)
     19     : instance_(content::HostGlobals::Get()->GetInstance(instance)) {
     20   v8_object_.Reset(instance_->GetIsolate(), v8_object);
     21   content::HostGlobals::Get()->host_var_tracker()->AddV8ObjectVar(this);
     22 }
     23 
     24 V8ObjectVar::~V8ObjectVar() {
     25   if (instance_)
     26     content::HostGlobals::Get()->host_var_tracker()->RemoveV8ObjectVar(this);
     27   v8_object_.Reset();
     28 }
     29 
     30 V8ObjectVar* V8ObjectVar::AsV8ObjectVar() {
     31   return this;
     32 }
     33 
     34 PP_VarType V8ObjectVar::GetType() const {
     35   return PP_VARTYPE_OBJECT;
     36 }
     37 
     38 v8::Local<v8::Object> V8ObjectVar::GetHandle() const {
     39   if (instance_)
     40     return v8::Local<v8::Object>::New(instance_->GetIsolate(), v8_object_);
     41   return v8::Local<v8::Object>();
     42 }
     43 
     44 void V8ObjectVar::InstanceDeleted() {
     45   // This is called by the HostVarTracker which will take care of removing us
     46   // from its set.
     47   DCHECK(instance_);
     48   instance_ = NULL;
     49 }
     50 
     51 // static
     52 scoped_refptr<V8ObjectVar> V8ObjectVar::FromPPVar(PP_Var var) {
     53   if (var.type != PP_VARTYPE_OBJECT)
     54     return scoped_refptr<V8ObjectVar>(NULL);
     55   scoped_refptr<Var> var_object(
     56       PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
     57   if (!var_object.get())
     58     return scoped_refptr<V8ObjectVar>();
     59   return scoped_refptr<V8ObjectVar>(var_object->AsV8ObjectVar());
     60 }
     61 
     62 }  // namespace ppapi
     63