Index: chrome/browser/extensions/api/processes/processes_api_service.cc |
diff --git a/chrome/browser/extensions/api/processes/processes_api_service.cc b/chrome/browser/extensions/api/processes/processes_api_service.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ce61bcaa2caf4003602347fcccea0e18a54e0c0d |
--- /dev/null |
+++ b/chrome/browser/extensions/api/processes/processes_api_service.cc |
@@ -0,0 +1,47 @@ |
+// 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/processes/processes_api_service.h" |
+ |
+#include "chrome/browser/extensions/event_router.h" |
+#include "chrome/browser/extensions/extension_system.h" |
+#include "chrome/browser/extensions/api/processes/processes_api.h" |
+#include "chrome/browser/extensions/api/processes/processes_api_constants.h" |
+#include "chrome/browser/extensions/api/processes/processes_api_service_factory.h" |
+#include "chrome/browser/profiles/profile.h" |
+ |
+namespace extensions { |
+ |
+ProcessesAPIService::ProcessesAPIService(Profile* profile) : profile_(profile) { |
+ DCHECK(ExtensionSystem::Get(profile_)->event_router()); |
+ ExtensionSystem::Get(profile_)->event_router()->RegisterObserver( |
+ this, processes_api_constants::kOnUpdated); |
+ ExtensionSystem::Get(profile_)->event_router()->RegisterObserver( |
+ this, processes_api_constants::kOnUpdatedWithMemory); |
+} |
+ |
+ProcessesAPIService::~ProcessesAPIService() { |
+} |
+ |
+// static |
+ProcessesAPIService* ProcessesAPIService::Get(Profile* profile) { |
+ return ProcessesAPIServiceFactory::GetForProfile(profile); |
+} |
+ |
+void ProcessesAPIService::OnListenerAdded(const std::string& event_name) { |
+ if (!processes_event_router_) |
+ processes_event_router_.reset(new ProcessesEventRouter(profile_)); |
+ // We lazily tell the TaskManager to start updating when listeners to the |
+ // processes.onUpdated or processes.onUpdatedWithMemory events arrive. |
+ processes_event_router_->ListenerAdded(); |
+} |
+ |
+void ProcessesAPIService::OnListenerRemoved(const std::string& event_name) { |
+ // If a processes.onUpdated or processes.onUpdatedWithMemory event listener |
+ // is removed (or a process with one exits), then we let the extension API |
+ // know that it has one fewer listener. |
+ processes_event_router_->ListenerRemoved(); |
+} |
+ |
+} // namespace extensions |