webkit/plugins/ppapi/npobject_var.cc

   1 // Copyright (c) 2011 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 "webkit/plugins/ppapi/npobject_var.h"
   6
   7 #include "base/logging.h"
   8 #include "ppapi/c/pp_var.h"
   9 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
  10 #include "webkit/plugins/ppapi/host_globals.h"
  11 #include "webkit/plugins/ppapi/host_var_tracker.h"
  12
  13 using webkit::ppapi::HostGlobals;
  14 using WebKit::WebBindings;
  15
  16 namespace ppapi {
  17
  18 // NPObjectVar -----------------------------------------------------------------
  19
  20 NPObjectVar::NPObjectVar(PP_Instance instance,
  21                          NPObject* np_object)
  22     : pp_instance_(instance),
  23       np_object_(np_object) {
  24   WebBindings::retainObject(np_object_);
  25   HostGlobals::Get()->host_var_tracker()->AddNPObjectVar(this);
  26 }
  27
  28 NPObjectVar::~NPObjectVar() {
  29   if (pp_instance())
  30     HostGlobals::Get()->host_var_tracker()->RemoveNPObjectVar(this);
  31   WebBindings::releaseObject(np_object_);
  32 }
  33
  34 NPObjectVar* NPObjectVar::AsNPObjectVar() {
  35   return this;
  36 }
  37
  38 PP_VarType NPObjectVar::GetType() const {
  39   return PP_VARTYPE_OBJECT;
  40 }
  41
  42 void NPObjectVar::InstanceDeleted() {
  43   DCHECK(pp_instance_);
  44   HostGlobals::Get()->host_var_tracker()->RemoveNPObjectVar(this);
  45   pp_instance_ = 0;
  46 }
  47
  48 // static
  49 scoped_refptr<NPObjectVar> NPObjectVar::FromPPVar(PP_Var var) {
  50   if (var.type != PP_VARTYPE_OBJECT)
  51     return scoped_refptr<NPObjectVar>(NULL);
  52   scoped_refptr<Var> var_object(
  53       PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
  54   if (!var_object)
  55     return scoped_refptr<NPObjectVar>();
  56   return scoped_refptr<NPObjectVar>(var_object->AsNPObjectVar());
  57 }
  58
  59 }  // namespace ppapi