RulesRegistry for declarative APIs.

chrome/browser/extensions/api/declarative/rules_registry_service.cc

+// Copyright (c) 2012 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 "chrome/browser/extensions/api/declarative/rules_registry_service.h"
+
+#include "base/logging.h"
+#include "chrome/browser/extensions/api/declarative/initializing_rules_registry.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/extensions/extension.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_source.h"
+
+namespace extensions {
+
+RulesRegistryService::RulesRegistryService(Profile* profile) {
+  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
+                 content::Source<Profile>(profile));
+}
+
+RulesRegistryService::~RulesRegistryService() {}
+
+void RulesRegistryService::RegisterRulesRegistry(
+    const std::string& event_name,
+    scoped_ptr<RulesRegistry> rule_registry) {
+  DCHECK(rule_registries_.find(event_name) == rule_registries_.end());
+  rule_registries_[event_name] =
+      make_linked_ptr(new InitializingRulesRegistry(rule_registry.Pass()));
+}
+
+RulesRegistry* RulesRegistryService::GetRulesRegistry(
+    const std::string& event_name) const {
+  RulesRegistryMap::const_iterator i = rule_registries_.find(event_name);
+  if (i == rule_registries_.end())
+    return NULL;
+  return i->second.get();
+}
+
+void RulesRegistryService::OnExtensionUnloaded(
+    const std::string& extension_id) {
+  RulesRegistryMap::iterator i;
+  for (i = rule_registries_.begin(); i != rule_registries_.end(); ++i)
+    i->second->OnExtensionUnloaded(extension_id);
+}
+
+void RulesRegistryService::Observe(
+    int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+  switch (type) {
+    case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
+      const Extension* extension =
+          content::Details<UnloadedExtensionInfo>(details)->extension;
+      OnExtensionUnloaded(extension->id());
+      break;
+    }
+  default:
+    NOTREACHED();
+  }
+}
+
+}  // namespace extensions