extensions/browser/extension_function_registry.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 "extensions/browser/extension_function_registry.h"
   6
   7 #include "base/memory/singleton.h"
   8 #include "extensions/browser/extension_function.h"
   9 #include "extensions/browser/extensions_browser_client.h"
  10
  11 // static
  12 ExtensionFunctionRegistry* ExtensionFunctionRegistry::GetInstance() {
  13   return Singleton<ExtensionFunctionRegistry>::get();
  14 }
  15
  16 ExtensionFunctionRegistry::ExtensionFunctionRegistry() {
  17   extensions::ExtensionsBrowserClient* client =
  18       extensions::ExtensionsBrowserClient::Get();
  19   if (client) {
  20     client->RegisterExtensionFunctions(this);
  21   }
  22 }
  23
  24 ExtensionFunctionRegistry::~ExtensionFunctionRegistry() {}
  25
  26 void ExtensionFunctionRegistry::GetAllNames(std::vector<std::string>* names) {
  27   for (FactoryMap::iterator iter = factories_.begin(); iter != factories_.end();
  28        ++iter) {
  29     names->push_back(iter->first);
  30   }
  31 }
  32
  33 bool ExtensionFunctionRegistry::OverrideFunction(
  34     const std::string& name,
  35     ExtensionFunctionFactory factory) {
  36   FactoryMap::iterator iter = factories_.find(name);
  37   if (iter == factories_.end()) {
  38     return false;
  39   } else {
  40     iter->second.factory_ = factory;
  41     return true;
  42   }
  43 }
  44
  45 ExtensionFunction* ExtensionFunctionRegistry::NewFunction(
  46     const std::string& name) {
  47   FactoryMap::iterator iter = factories_.find(name);
  48   if (iter == factories_.end()) {
  49     return NULL;
  50   }
  51   ExtensionFunction* function = iter->second.factory_();
  52   function->set_name(name);
  53   function->set_histogram_value(iter->second.histogram_value_);
  54   return function;
  55 }
  56
  57 ExtensionFunctionRegistry::FactoryEntry::FactoryEntry()
  58     : factory_(0), histogram_value_(extensions::functions::UNKNOWN) {}
  59
  60 ExtensionFunctionRegistry::FactoryEntry::FactoryEntry(
  61     ExtensionFunctionFactory factory,
  62     extensions::functions::HistogramValue histogram_value)
  63     : factory_(factory), histogram_value_(histogram_value) {}