Send event on changes to the cookie monster.

BUG=38398
TEST=*.CookiesEvents

Review URL: http://codereview.chromium.org/2703004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@49390 0039d316-1c4b-4281-b951-d872f2087c98

6 files changed, 120 insertions, 2 deletions

diff --git a/chrome/browser/extensions/extension_cookies_api.cc b/chrome/browser/extensions/extension_cookies_api.cc
index d9b46df..0cf9b07 100644
--- a/chrome/browser/extensions/extension_cookies_api.cc
+++ b/chrome/browser/extensions/extension_cookies_api.cc
@@ -6,16 +6,78 @@
 
 #include "chrome/browser/extensions/extension_cookies_api.h"
 
+#include "base/json/json_writer.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/extensions/extension_cookies_api_constants.h"
 #include "chrome/browser/extensions/extension_cookies_helpers.h"
+#include "chrome/browser/extensions/extension_message_service.h"
 #include "chrome/browser/profile.h"
 #include "chrome/common/extensions/extension_error_utils.h"
 #include "chrome/common/net/url_request_context_getter.h"
+#include "chrome/common/notification_type.h"
+#include "chrome/common/notification_service.h"
 #include "net/base/cookie_monster.h"
 
 namespace keys = extension_cookies_api_constants;
 
+// static
+ExtensionCookiesEventRouter* ExtensionCookiesEventRouter::GetInstance() {
+  return Singleton<ExtensionCookiesEventRouter>::get();
+}
+
+void ExtensionCookiesEventRouter::Init() {
+  if (registrar_.IsEmpty()) {
+    registrar_.Add(this,
+                   NotificationType::COOKIE_CHANGED,
+                   NotificationService::AllSources());
+  }
+}
+
+void ExtensionCookiesEventRouter::Observe(NotificationType type,
+                                          const NotificationSource& source,
+                                          const NotificationDetails& details) {
+  switch (type.value) {
+    case NotificationType::COOKIE_CHANGED:
+      CookieChanged(
+          Source<Profile>(source).ptr(),
+          Details<ChromeCookieDetails>(details).ptr());
+      break;
+
+    default:
+      NOTREACHED();
+  }
+}
+
+void ExtensionCookiesEventRouter::CookieChanged(
+    Profile* profile,
+    ChromeCookieDetails* details) {
+  ListValue args;
+  DictionaryValue* dict = new DictionaryValue();
+  dict->SetBoolean(keys::kRemovedKey, details->removed);
+  dict->Set(
+      keys::kCookieKey,
+      extension_cookies_helpers::CreateCookieValue(*details->cookie_pair,
+          extension_cookies_helpers::GetStoreIdFromProfile(profile)));
+  args.Append(dict);
+
+  std::string json_args;
+  base::JSONWriter::Write(&args, false, &json_args);
+  GURL cookie_domain =
+      extension_cookies_helpers::GetURLFromCookiePair(*details->cookie_pair);
+  LOG(WARNING) << "Sending cookie " << json_args;
+  DispatchEvent(profile, keys::kOnChanged, json_args, cookie_domain);
+}
+
+void ExtensionCookiesEventRouter::DispatchEvent(Profile* profile,
+                                                const char* event_name,
+                                                const std::string& json_args,
+                                                GURL& cookie_domain) {
+  if (profile && profile->GetExtensionMessageService()) {
+    profile->GetExtensionMessageService()->DispatchEventToRenderers(
+        event_name, json_args, profile->IsOffTheRecord(), cookie_domain);
+  }
+}
+
 bool CookiesFunction::ParseUrl(const DictionaryValue* details, GURL* url,
                                bool check_host_permissions) {
   DCHECK(details && url);
diff --git a/chrome/browser/extensions/extension_cookies_api.h b/chrome/browser/extensions/extension_cookies_api.h
index 27cd626..c230b01 100644
--- a/chrome/browser/extensions/extension_cookies_api.h
+++ b/chrome/browser/extensions/extension_cookies_api.h
@@ -10,12 +10,52 @@
 
 #include <string>
 
+#include "base/singleton.h"
 #include "chrome/browser/extensions/extension_function.h"
+#include "chrome/browser/net/chrome_cookie_notification_details.h"
+#include "chrome/common/notification_registrar.h"
 
 namespace net {
 class CookieStore;
 }  // namespace net
 
+// Observes CookieMonster notifications and routes them as events to the
+// extension system.
+class ExtensionCookiesEventRouter : public NotificationObserver {
+ public:
+  // Single instance of the event router.
+  static ExtensionCookiesEventRouter* GetInstance();
+
+  void Init();
+
+ private:
+  friend struct DefaultSingletonTraits<ExtensionCookiesEventRouter>;
+
+  ExtensionCookiesEventRouter() {}
+  virtual ~ExtensionCookiesEventRouter() {}
+
+  // NotificationObserver implementation.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+  // Handler for the COOKIE_CHANGED event. The method takes the details of such
+  // an event and constructs a suitable JSON formatted extension event from it.
+  void CookieChanged(Profile* profile,
+                     ChromeCookieDetails* details);
+
+  // This method dispatches events to the extension message service.
+  void DispatchEvent(Profile* context,
+                     const char* event_name,
+                     const std::string& json_args,
+                     GURL& cookie_domain);
+
+  // Used for tracking registrations to CookieMonster notifications.
+  NotificationRegistrar registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionCookiesEventRouter);
+};
+
 // Serves as a base class for all cookies API functions, and defines some
 // common functionality for parsing cookies API function arguments.
 // Note that all of the functions in this file derive from ExtensionFunction,
diff --git a/chrome/browser/extensions/extension_cookies_api_constants.cc b/chrome/browser/extensions/extension_cookies_api_constants.cc
index 921a966..e77482b 100644
--- a/chrome/browser/extensions/extension_cookies_api_constants.cc
+++ b/chrome/browser/extensions/extension_cookies_api_constants.cc
@@ -6,6 +6,7 @@
 
 namespace extension_cookies_api_constants {
 
+const wchar_t kCookieKey[] = L"cookie";
 const wchar_t kDomainKey[] = L"domain";
 const wchar_t kExpirationDateKey[] = L"expirationDate";
 const wchar_t kHostOnlyKey[] = L"hostOnly";
@@ -13,6 +14,7 @@ const wchar_t kHttpOnlyKey[] = L"httpOnly";
 const wchar_t kIdKey[] = L"id";
 const wchar_t kNameKey[] = L"name";
 const wchar_t kPathKey[] = L"path";
+const wchar_t kRemovedKey[] = L"removed";
 const wchar_t kSecureKey[] = L"secure";
 const wchar_t kSessionKey[] = L"session";
 const wchar_t kStoreIdKey[] = L"storeId";
@@ -20,6 +22,8 @@ const wchar_t kTabIdsKey[] = L"tabIds";
 const wchar_t kUrlKey[] = L"url";
 const wchar_t kValueKey[] = L"value";
 
+const char kOnChanged[] = "experimental.cookies.onChanged";
+
 const char kCookieSetFailedError[] =
     "Failed to parse or set cookie named \"*\".";
 const char kInvalidStoreIdError[] = "Invalid cookie store id: \"*\".";
diff --git a/chrome/browser/extensions/extension_cookies_api_constants.h b/chrome/browser/extensions/extension_cookies_api_constants.h
index 28814b7..d9c0015 100644
--- a/chrome/browser/extensions/extension_cookies_api_constants.h
+++ b/chrome/browser/extensions/extension_cookies_api_constants.h
@@ -10,6 +10,7 @@
 namespace extension_cookies_api_constants {
 
 // Keys.
+extern const wchar_t kCookieKey[];
 extern const wchar_t kDomainKey[];
 extern const wchar_t kExpirationDateKey[];
 extern const wchar_t kHostOnlyKey[];
@@ -17,6 +18,7 @@ extern const wchar_t kHttpOnlyKey[];
 extern const wchar_t kIdKey[];
 extern const wchar_t kNameKey[];
 extern const wchar_t kPathKey[];
+extern const wchar_t kRemovedKey[];
 extern const wchar_t kSecureKey[];
 extern const wchar_t kSessionKey[];
 extern const wchar_t kStoreIdKey[];
@@ -24,7 +26,8 @@ extern const wchar_t kTabIdsKey[];
 extern const wchar_t kUrlKey[];
 extern const wchar_t kValueKey[];
 
-// TODO(cindylau): kOnChanged is not yet implemented.
+// Events.
+extern const char kOnChanged[];
 
 // Errors.
 extern const char kCookieSetFailedError[];
diff --git a/chrome/browser/extensions/extension_cookies_apitest.cc b/chrome/browser/extensions/extension_cookies_apitest.cc
index 12c6373..396f8c7 100644
--- a/chrome/browser/extensions/extension_cookies_apitest.cc
+++ b/chrome/browser/extensions/extension_cookies_apitest.cc
@@ -10,5 +10,12 @@ IN_PROC_BROWSER_TEST_F(ExtensionApiTest, Cookies) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableExperimentalExtensionApis);
 
-  ASSERT_TRUE(RunExtensionTest("cookies")) << message_;
+  ASSERT_TRUE(RunExtensionTest("cookies/api")) << message_;
+}
+
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, CookiesEvents) {
+  CommandLine::ForCurrentProcess()->AppendSwitch(
+      switches::kEnableExperimentalExtensionApis);
+
+  ASSERT_TRUE(RunExtensionTest("cookies/events")) << message_;
 }
diff --git a/chrome/browser/extensions/extensions_service.cc b/chrome/browser/extensions/extensions_service.cc
index 1837d15..d29d5c6 100644
--- a/chrome/browser/extensions/extensions_service.cc
+++ b/chrome/browser/extensions/extensions_service.cc
@@ -20,6 +20,7 @@
 #include "chrome/browser/extensions/extension_accessibility_api.h"
 #include "chrome/browser/extensions/extension_bookmarks_module.h"
 #include "chrome/browser/extensions/extension_browser_event_router.h"
+#include "chrome/browser/extensions/extension_cookies_api.h"
 #include "chrome/browser/extensions/extension_data_deleter.h"
 #include "chrome/browser/extensions/extension_dom_ui.h"
 #include "chrome/browser/extensions/extension_error_reporter.h"
@@ -178,6 +179,7 @@ void ExtensionsService::InitEventRouters() {
   ExtensionBrowserEventRouter::GetInstance()->Init();
   ExtensionBookmarkEventRouter::GetSingleton()->Observe(
       profile_->GetBookmarkModel());
+  ExtensionCookiesEventRouter::GetInstance()->Init();
 }
 
 void ExtensionsService::Init() {