components/translate/content/browser/browser_cld_data_provider_factory.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 "components/translate/content/browser/browser_cld_data_provider_factory.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "components/translate/content/browser/browser_cld_data_provider.h"
   9
  10 namespace {
  11
  12 // The global instance, alive for the entire lifetime of the process.
  13 translate::BrowserCldDataProviderFactory* g_instance = NULL;
  14
  15 // The default factory, which produces no-op instances of BrowserCldDataProvider
  16 // suitable for use when CLD data is statically-linked.
  17 base::LazyInstance<translate::BrowserCldDataProviderFactory>::Leaky
  18   g_wrapped_default = LAZY_INSTANCE_INITIALIZER;
  19
  20 }  // namespace
  21
  22
  23 namespace translate {
  24
  25 scoped_ptr<BrowserCldDataProvider>
  26 BrowserCldDataProviderFactory::CreateBrowserCldDataProvider(
  27       content::WebContents* web_contents) {
  28   return scoped_ptr<BrowserCldDataProvider>(new BrowserCldDataProvider());
  29 }
  30
  31 // static
  32 bool BrowserCldDataProviderFactory::IsInitialized() {
  33   return g_instance != NULL;
  34 }
  35
  36 // static
  37 void BrowserCldDataProviderFactory::SetDefault(
  38     BrowserCldDataProviderFactory* instance) {
  39   if (!IsInitialized()) Set(instance);
  40 }
  41
  42 // static
  43 void BrowserCldDataProviderFactory::Set(
  44     BrowserCldDataProviderFactory* instance) {
  45     g_instance = instance;
  46 }
  47
  48 // static
  49 BrowserCldDataProviderFactory* BrowserCldDataProviderFactory::Get() {
  50   if (IsInitialized()) return g_instance;
  51   return &g_wrapped_default.Get();
  52 }
  53
  54 }  // namespace translate