RulesRegistry for declarative APIs.

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

Index: chrome/browser/extensions/api/declarative/rules_registry_service.h
diff --git a/chrome/browser/extensions/api/declarative/rules_registry_service.h b/chrome/browser/extensions/api/declarative/rules_registry_service.h
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+// 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_RULES_REGISTRY_SERVICE_H__
+#define CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_RULES_REGISTRY_SERVICE_H__
+#pragma once
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/memory/linked_ptr.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+class Profile;
+
+namespace content {
+class NotificationSource;
+class NotificationSource;
+}
+
+namespace extensions {
+class RulesRegistry;
+}
+
+namespace extensions {
+
+// This class owns all RulesRegistries implementations of an ExtensionService.
+class RulesRegistryService : public content::NotificationObserver  {
+ public:
+  explicit RulesRegistryService(Profile* profile);
+  virtual ~RulesRegistryService();
+
+  // Registers a RulesRegistry and wraps it in an InitializingRulesRegistry.
+  void RegisterRulesRegistry(const std::string& event_name,
+                             scoped_ptr<RulesRegistry> rule_registry);
+
+  // Returns the RulesRegistry for |event_name| or NULL if no such registry
+  // has been registered.
+  RulesRegistry* GetRulesRegistry(const std::string& event_name) const;
+
+ private:
+  // Maps event names to RuleRegistries that handle these events.
+  typedef std::map<std::string, linked_ptr<RulesRegistry> > RulesRegistryMap;
+
+  // Notifies all RulesRegistries that |extension_id| was unloaded.
+  void OnExtensionUnloaded(const std::string& extension_id);
+
+  // Implementation of content::NotificationObserver.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  RulesRegistryMap rule_registries_;
+
+  content::NotificationRegistrar registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(RulesRegistryService);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_RULES_REGISTRY_SERVICE_H__