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/callback.h"
+#include "base/logging.h"
+#include "base/stl_util.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() {
+}
+
+RulesRegistryService::~RulesRegistryService() {
+  STLDeleteContainerPairSecondPointers(
+      rule_registries_.begin(), rule_registries_.end());
+}
+
+void RulesRegistryService::Init(Profile* profile) {
+  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
+                 content::Source<Profile>(profile));
+
+  // TODO(battre): Register various rules registries here.
+  // RegisterRuleRegistry("chrome.net", new FoobarRulesRegistry());
+}
+
+void RulesRegistryService::RegisterRuleRegistry(
+    const std::string& event_name,
+    scoped_ptr<RulesRegistry> rule_registry) {
+  DCHECK(rule_registries_.find(event_name) == rule_registries_.end());
+  rule_registries_[event_name] = rule_registry.release();
+}
+
+bool RulesRegistryService::AddRules(
+    const std::string& event_name,
+    const std::string& extension_id,
+    const std::vector<DictionaryValue*>& rules,
+    RulesRegistry::SetErrorCallback set_error_callback) {
+  DCHECK(rule_registries_.find(event_name) != rule_registries_.end());
+  // TODO(battre): Ensure that rules IDs are unique.
+  return rule_registries_[event_name]->AddRules(
+      extension_id, rules, set_error_callback);
+}
+
+bool RulesRegistryService::RemoveRules(
+    const std::string& event_name,
+    const std::string& extension_id,
+    const std::vector<std::string>& rule_identifiers,
+    RulesRegistry::SetErrorCallback set_error_callback) {
+  DCHECK(rule_registries_.find(event_name) != rule_registries_.end());
+  return rule_registries_[event_name]->RemoveRules(
+      extension_id, rule_identifiers, set_error_callback);
+}
+
+void RulesRegistryService::GetRules(
+    const std::string& event_name,
+    const std::string& extension_id,
+    const std::vector<std::string>& rule_identifiers,
+    std::vector<DictionaryValue*>* out) {
+  DCHECK(rule_registries_.find(event_name) != rule_registries_.end());
+  rule_registries_[event_name]->GetRules(extension_id, rule_identifiers, out);
+}
+
+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