ppapi/shared_impl/dictionary_var.cc

   1 // Copyright (c) 2013 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 "ppapi/shared_impl/dictionary_var.h"
   6
   7 #include "base/memory/ref_counted.h"
   8 #include "base/strings/string_util.h"
   9 #include "ppapi/shared_impl/array_var.h"
  10 #include "ppapi/shared_impl/ppapi_globals.h"
  11 #include "ppapi/shared_impl/var_tracker.h"
  12
  13 namespace ppapi {
  14
  15 DictionaryVar::DictionaryVar() {}
  16
  17 DictionaryVar::~DictionaryVar() {}
  18
  19 // static
  20 DictionaryVar* DictionaryVar::FromPPVar(const PP_Var& var) {
  21   if (var.type != PP_VARTYPE_DICTIONARY)
  22     return NULL;
  23
  24   scoped_refptr<Var> var_object(
  25       PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
  26   if (!var_object.get())
  27     return NULL;
  28   return var_object->AsDictionaryVar();
  29 }
  30
  31 DictionaryVar* DictionaryVar::AsDictionaryVar() { return this; }
  32
  33 PP_VarType DictionaryVar::GetType() const { return PP_VARTYPE_DICTIONARY; }
  34
  35 PP_Var DictionaryVar::Get(const PP_Var& key) const {
  36   StringVar* string_var = StringVar::FromPPVar(key);
  37   if (!string_var)
  38     return PP_MakeUndefined();
  39
  40   KeyValueMap::const_iterator iter = key_value_map_.find(string_var->value());
  41   if (iter != key_value_map_.end()) {
  42     if (PpapiGlobals::Get()->GetVarTracker()->AddRefVar(iter->second.get()))
  43       return iter->second.get();
  44     else
  45       return PP_MakeUndefined();
  46   } else {
  47     return PP_MakeUndefined();
  48   }
  49 }
  50
  51 PP_Bool DictionaryVar::Set(const PP_Var& key, const PP_Var& value) {
  52   StringVar* string_var = StringVar::FromPPVar(key);
  53   if (!string_var)
  54     return PP_FALSE;
  55
  56   key_value_map_[string_var->value()] = value;
  57   return PP_TRUE;
  58 }
  59
  60 void DictionaryVar::Delete(const PP_Var& key) {
  61   StringVar* string_var = StringVar::FromPPVar(key);
  62   if (!string_var)
  63     return;
  64
  65   key_value_map_.erase(string_var->value());
  66 }
  67
  68 PP_Bool DictionaryVar::HasKey(const PP_Var& key) const {
  69   StringVar* string_var = StringVar::FromPPVar(key);
  70   if (!string_var)
  71     return PP_FALSE;
  72
  73   bool result =
  74       key_value_map_.find(string_var->value()) != key_value_map_.end();
  75   return PP_FromBool(result);
  76 }
  77
  78 PP_Var DictionaryVar::GetKeys() const {
  79   scoped_refptr<ArrayVar> array_var(new ArrayVar());
  80   array_var->elements().reserve(key_value_map_.size());
  81
  82   for (KeyValueMap::const_iterator iter = key_value_map_.begin();
  83        iter != key_value_map_.end();
  84        ++iter) {
  85     array_var->elements().push_back(ScopedPPVar(
  86         ScopedPPVar::PassRef(), StringVar::StringToPPVar(iter->first)));
  87   }
  88   return array_var->GetPPVar();
  89 }
  90
  91 bool DictionaryVar::SetWithStringKey(const std::string& utf8_key,
  92                                      const PP_Var& value) {
  93   if (!IsStringUTF8(utf8_key))
  94     return false;
  95
  96   key_value_map_[utf8_key] = value;
  97   return true;
  98 }
  99
 100 void DictionaryVar::DeleteWithStringKey(const std::string& utf8_key) {
 101   key_value_map_.erase(utf8_key);
 102 }
 103
 104 }  // namespace ppapi