content/renderer/pepper/v8object_var.cc

   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::Local<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