athena/content/app_registry_impl.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 "athena/content/public/app_registry.h"
   6
   7 #include "athena/content/app_activity_registry.h"
   8 #include "base/logging.h"
   9
  10 namespace athena {
  11
  12 class AppRegistryImpl : public AppRegistry {
  13  public:
  14   AppRegistryImpl();
  15   ~AppRegistryImpl() override;
  16
  17   // AppRegistry:
  18   AppActivityRegistry* GetAppActivityRegistry(
  19       const std::string& app_id,
  20       content::BrowserContext* browser_context) override;
  21   int NumberOfApplications() const override { return app_list_.size(); }
  22
  23  private:
  24   void RemoveAppActivityRegistry(AppActivityRegistry* registry) override;
  25
  26   std::vector<AppActivityRegistry*> app_list_;
  27
  28   DISALLOW_COPY_AND_ASSIGN(AppRegistryImpl);
  29 };
  30
  31 namespace {
  32
  33 AppRegistryImpl* instance = nullptr;
  34
  35 }  // namespace
  36
  37 AppRegistryImpl::AppRegistryImpl() {
  38 }
  39 AppRegistryImpl::~AppRegistryImpl() {
  40   DCHECK(app_list_.empty());
  41 }
  42
  43 AppActivityRegistry* AppRegistryImpl::GetAppActivityRegistry(
  44     const std::string& app_id,
  45     content::BrowserContext* browser_context) {
  46   // Search for an existing proxy.
  47   for (std::vector<AppActivityRegistry*>::iterator it = app_list_.begin();
  48        it != app_list_.end(); ++it) {
  49     if ((*it)->app_id() == app_id &&
  50         (*it)->browser_context() == browser_context)
  51       return *it;
  52   }
  53
  54   // Create and return a new application object.
  55   AppActivityRegistry* app_activity_registry =
  56       new AppActivityRegistry(app_id, browser_context);
  57   app_list_.push_back(app_activity_registry);
  58   return app_activity_registry;
  59 }
  60
  61 void AppRegistryImpl::RemoveAppActivityRegistry(AppActivityRegistry* registry) {
  62   std::vector<AppActivityRegistry*>::iterator item =
  63       std::find(app_list_.begin(), app_list_.end(), registry);
  64   CHECK(item != app_list_.end());
  65   app_list_.erase(item);
  66   delete registry;
  67 }
  68
  69 // static
  70 void AppRegistry::Create() {
  71   DCHECK(!instance);
  72   instance = new AppRegistryImpl();
  73 }
  74
  75 // static
  76 AppRegistry* AppRegistry::Get() {
  77   DCHECK(instance);
  78   return instance;
  79 }
  80
  81 // static
  82 void AppRegistry::ShutDown() {
  83   DCHECK(instance);
  84   delete instance;
  85 }
  86
  87 AppRegistry::AppRegistry() {}
  88
  89 AppRegistry::~AppRegistry() {
  90   instance = nullptr;
  91 }
  92
  93 }  // namespace athena