components/translate/content/renderer/renderer_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/renderer/renderer_cld_data_provider_factory.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "components/translate/content/renderer/renderer_cld_data_provider.h"
   9 #include "content/public/renderer/render_view_observer.h"
  10
  11 namespace {
  12
  13 // The global instance, alive for the entire lifetime of the process.
  14 translate::RendererCldDataProviderFactory* g_instance = NULL;
  15
  16 // The default factory, which produces no-op instances of
  17 // RendererCldDataProvider suitable for use when CLD data is statically-linked.
  18 base::LazyInstance<translate::RendererCldDataProviderFactory>::Leaky
  19   g_wrapped_default = LAZY_INSTANCE_INITIALIZER;
  20
  21 }  // namespace
  22
  23
  24 namespace translate {
  25
  26 scoped_ptr<RendererCldDataProvider>
  27 RendererCldDataProviderFactory::CreateRendererCldDataProvider(
  28     content::RenderViewObserver* render_view_observer) {
  29   return scoped_ptr<RendererCldDataProvider>(
  30       new RendererCldDataProvider());
  31 }
  32
  33 // static
  34 bool RendererCldDataProviderFactory::IsInitialized() {
  35   return g_instance != NULL;
  36 }
  37
  38 // static
  39 void RendererCldDataProviderFactory::SetDefault(
  40     RendererCldDataProviderFactory* instance) {
  41   if (!IsInitialized()) Set(instance);
  42 }
  43
  44 // static
  45 void RendererCldDataProviderFactory::Set(
  46     RendererCldDataProviderFactory* instance) {
  47     g_instance = instance;
  48 }
  49
  50 // static
  51 RendererCldDataProviderFactory* RendererCldDataProviderFactory::Get() {
  52   if (IsInitialized()) return g_instance;
  53   return &g_wrapped_default.Get();
  54 }
  55
  56 }  // namespace translate