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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 "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) {}
     64