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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 "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   virtual ~AppRegistryImpl();
     16 
     17   // AppRegistry:
     18   virtual AppActivityRegistry* GetAppActivityRegistry(
     19       const std::string& app_id,
     20       content::BrowserContext* browser_context) OVERRIDE;
     21   virtual int NumberOfApplications() const OVERRIDE { return app_list_.size(); }
     22 
     23  private:
     24   virtual void RemoveAppActivityRegistry(
     25       AppActivityRegistry* registry) OVERRIDE;
     26 
     27   std::vector<AppActivityRegistry*> app_list_;
     28 
     29   DISALLOW_COPY_AND_ASSIGN(AppRegistryImpl);
     30 };
     31 
     32 namespace {
     33 
     34 AppRegistryImpl* instance = NULL;
     35 
     36 }  // namespace
     37 
     38 AppRegistryImpl::AppRegistryImpl() {
     39 }
     40 AppRegistryImpl::~AppRegistryImpl() {
     41   DCHECK(app_list_.empty());
     42 }
     43 
     44 AppActivityRegistry* AppRegistryImpl::GetAppActivityRegistry(
     45     const std::string& app_id,
     46     content::BrowserContext* browser_context) {
     47   // Search for an existing proxy.
     48   for (std::vector<AppActivityRegistry*>::iterator it = app_list_.begin();
     49        it != app_list_.end(); ++it) {
     50     if ((*it)->app_id() == app_id &&
     51         (*it)->browser_context() == browser_context)
     52       return *it;
     53   }
     54 
     55   // Create and return a new application object.
     56   AppActivityRegistry* app_activity_registry =
     57       new AppActivityRegistry(app_id, browser_context);
     58   app_list_.push_back(app_activity_registry);
     59   return app_activity_registry;
     60 }
     61 
     62 void AppRegistryImpl::RemoveAppActivityRegistry(AppActivityRegistry* registry) {
     63   std::vector<AppActivityRegistry*>::iterator item =
     64       std::find(app_list_.begin(), app_list_.end(), registry);
     65   CHECK(item != app_list_.end());
     66   app_list_.erase(item);
     67   delete registry;
     68 }
     69 
     70 // static
     71 void AppRegistry::Create() {
     72   DCHECK(!instance);
     73   instance = new AppRegistryImpl();
     74 }
     75 
     76 // static
     77 AppRegistry* AppRegistry::Get() {
     78   DCHECK(instance);
     79   return instance;
     80 }
     81 
     82 // static
     83 void AppRegistry::ShutDown() {
     84   DCHECK(instance);
     85   delete instance;
     86 }
     87 
     88 AppRegistry::AppRegistry() {}
     89 
     90 AppRegistry::~AppRegistry() {
     91   instance = NULL;
     92 }
     93 
     94 }  // namespace athena
     95