RulesRegistry for declarative APIs.

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

+// 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/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+#include "chrome/browser/extensions/api/declarative/rules_registry.h"
+#include "chrome/browser/profiles/profile_keyed_service.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 {
+
+// This is a dispatcher that delegates function calls to other RuleRegistries.
+// Use the RulesRegistryServiceFactory to retrieve an instance of this class.
+class RulesRegistryService
+    : public ProfileKeyedService, content::NotificationObserver {

[battre, 2012/01/31 21:03:54]

Instead of making this a ProfileKeyedService we could also put it into
ExtensionService. I don't know what is is considered the preferable way, given
that you asked me recently not to increase the size of ExtensionService even
more.

+ public:
+  RulesRegistryService();
+  virtual ~RulesRegistryService();
+  void Init(Profile* profile);
+
+  // Registers a RuleRegistry such that all calls for |event_name| are
+  // dispatched to this RuleRegistry.
+  // Public for testing.
+  void RegisterRuleRegistry(
+      const std::string& event_name,
+      scoped_ptr<RulesRegistry> rule_registry);
+
+  // RulesRegistry alike implementation. We add an additional |event_name|
+  // to each function, which represents the name of the JavaScript object
+  // on which the function was called.
+  bool AddRules(const std::string& event_name,
+                const std::string& extension_id,
+                const std::vector<DictionaryValue*>& rules,
+                RulesRegistry::SetErrorCallback set_error_callback);
+  bool RemoveRules(const std::string& event_name,
+                   const std::string& extension_id,
+                   const std::vector<std::string>& rule_identifiers,
+                   RulesRegistry::SetErrorCallback set_error_callback);
+  void GetRules(const std::string& event_name,
+                const std::string& extension_id,
+                const std::vector<std::string>& rule_identifiers,
+                std::vector<DictionaryValue*>* out);
+  void OnExtensionUnloaded(const std::string& extension_id);
+
+ private:
+  // Maps event names to RuleRegistries that handle these events.
+  // Owns the RuleRegistry objects.
+  typedef std::map<std::string, RulesRegistry*> RulesRegistryMap;
+
+  // Implementation of content::NotificationObserver.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  content::NotificationRegistrar registrar_;
+
+  RulesRegistryMap rule_registries_;
+
+  DISALLOW_COPY_AND_ASSIGN(RulesRegistryService);
+};
+
+}
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_RULES_REGISTRY_SERVICE_H__