Athena: Adding basic resource management framework (un-/re-loading) of V2 applications

athena/content/app_registry.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "athena/content/public/app_registry.h"
+
+#include "athena/content/app_activity_registry.h"
+#include "athena/content/public/app_content_delegate.h"
+
+namespace athena {
+
+namespace {
+// The global instance.
+AppRegistry* instance = NULL;
+}
+
+void AppRegistry::Create() {
+  DCHECK(!instance);
+  instance = new AppRegistry();
+}
+// static
+AppRegistry* AppRegistry::Get() {
+  return instance;
+}
+
+// static
+void AppRegistry::ShutDown() {
+  if (instance)
+    delete instance;
+  instance = NULL;
+}
+
+void AppRegistry::SetDelegate(AppContentDelegate* delegate) {
+  DCHECK(delegate);
+  delegate_.reset(delegate);
+}
+
+AppContentDelegate* AppRegistry::GetDelegate() {
+  return delegate_.get();
+}
+
+AppActivityRegistry* AppRegistry::GetAppActivityRegistry(
+    const std::string& app_id,
+    content::BrowserContext* browser_context) {
+  // Search for an existing proxy.
+  for (std::vector<AppActivityRegistry*>::iterator it = app_list_.begin();
+       it != app_list_.end(); ++it) {
+    if ((*it)->app_id() == app_id &&
+        (*it)->browser_context() == browser_context)
+      return *it;
+  }
+
+  // Create and return a new application object.
+  AppActivityRegistry* app_activity_registry =
+      new AppActivityRegistry(app_id, browser_context);
+  app_list_.push_back(app_activity_registry);
+  return app_activity_registry;
+}
+
+void AppRegistry::RemoveAppActivityRegistry(AppActivityRegistry* registry) {
+  std::vector<AppActivityRegistry*>::iterator item =
+      std::find(app_list_.begin(), app_list_.end(), registry);
+  CHECK(item != app_list_.end());
+  app_list_.erase(item);
+}
+
+AppRegistry::AppRegistry() : delegate_(new AppContentDelegate) {}
+
+AppRegistry::~AppRegistry() {
+  DCHECK(app_list_.empty());
+}
+
+}  // namespace athena