Rename SyncNotifier->Invalidator and SyncNotifierObserver->InvalidationHandler.

sync/notifier/sync_notifier_registrar.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 "sync/notifier/sync_notifier_registrar.h"
-
-#include <cstddef>
-#include <utility>
-
-#include "base/logging.h"
-
-namespace syncer {
-
-SyncNotifierRegistrar::SyncNotifierRegistrar() {}
-
-SyncNotifierRegistrar::~SyncNotifierRegistrar() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-}
-
-void SyncNotifierRegistrar::RegisterHandler(SyncNotifierObserver* handler) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  CHECK(handler);
-  CHECK(!handlers_.HasObserver(handler));
-  handlers_.AddObserver(handler);
-}
-
-void SyncNotifierRegistrar::UpdateRegisteredIds(
-    SyncNotifierObserver* handler,
-    const ObjectIdSet& ids) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  CHECK(handler);
-  CHECK(handlers_.HasObserver(handler));
-  // Remove all existing entries for |handler|.
-  for (IdHandlerMap::iterator it = id_to_handler_map_.begin();
-       it != id_to_handler_map_.end(); ) {
-    if (it->second == handler) {
-      IdHandlerMap::iterator erase_it = it;
-      ++it;
-      id_to_handler_map_.erase(erase_it);
-    } else {
-      ++it;
-    }
-  }
-
-  // Now add the entries for |handler|. We keep track of the last insertion
-  // point so we only traverse the map once to insert all the new entries.
-  IdHandlerMap::iterator insert_it = id_to_handler_map_.begin();
-  for (ObjectIdSet::const_iterator it = ids.begin(); it != ids.end(); ++it) {
-    insert_it =
-        id_to_handler_map_.insert(insert_it, std::make_pair(*it, handler));
-    CHECK_EQ(handler, insert_it->second)
-        << "Duplicate registration: trying to register "
-        << ObjectIdToString(insert_it->first) << " for "
-        << handler << " when it's already registered for "
-        << insert_it->second;
-  }
-}
-
-void SyncNotifierRegistrar::UnregisterHandler(SyncNotifierObserver* handler) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  CHECK(handler);
-  CHECK(handlers_.HasObserver(handler));
-  handlers_.RemoveObserver(handler);
-}
-
-ObjectIdSet SyncNotifierRegistrar::GetAllRegisteredIds() const {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  ObjectIdSet registered_ids;
-  for (IdHandlerMap::const_iterator it = id_to_handler_map_.begin();
-       it != id_to_handler_map_.end(); ++it) {
-    registered_ids.insert(it->first);
-  }
-  return registered_ids;
-}
-
-void SyncNotifierRegistrar::DispatchInvalidationsToHandlers(
-    const ObjectIdStateMap& id_state_map,
-    IncomingNotificationSource source) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  // If we have no handlers, there's nothing to do.
-  if (!handlers_.might_have_observers()) {
-    return;
-  }
-
-  typedef std::map<SyncNotifierObserver*, ObjectIdStateMap> DispatchMap;
-  DispatchMap dispatch_map;
-  for (ObjectIdStateMap::const_iterator it = id_state_map.begin();
-       it != id_state_map.end(); ++it) {
-    SyncNotifierObserver* const handler = ObjectIdToHandler(it->first);
-    // Filter out invalidations for IDs with no handler.
-    if (handler)
-      dispatch_map[handler].insert(*it);
-  }
-
-  // Emit invalidations only for handlers in |handlers_|.
-  ObserverListBase<SyncNotifierObserver>::Iterator it(handlers_);
-  SyncNotifierObserver* handler = NULL;
-  while ((handler = it.GetNext()) != NULL) {
-    DispatchMap::const_iterator dispatch_it = dispatch_map.find(handler);
-    if (dispatch_it != dispatch_map.end())
-      handler->OnIncomingNotification(dispatch_it->second, source);
-  }
-}
-
-void SyncNotifierRegistrar::EmitOnNotificationsEnabled() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  FOR_EACH_OBSERVER(SyncNotifierObserver, handlers_, OnNotificationsEnabled());
-}
-
-void SyncNotifierRegistrar::EmitOnNotificationsDisabled(
-    NotificationsDisabledReason reason) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  FOR_EACH_OBSERVER(SyncNotifierObserver, handlers_,
-                    OnNotificationsDisabled(reason));
-}
-
-bool SyncNotifierRegistrar::IsHandlerRegisteredForTest(
-    SyncNotifierObserver* handler) const {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  return handlers_.HasObserver(handler);
-}
-
-ObjectIdSet SyncNotifierRegistrar::GetRegisteredIdsForTest(
-    SyncNotifierObserver* handler) const {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  ObjectIdSet registered_ids;
-  for (IdHandlerMap::const_iterator it = id_to_handler_map_.begin();
-       it != id_to_handler_map_.end(); ++it) {
-    if (it->second == handler) {
-      registered_ids.insert(it->first);
-    }
-  }
-  return registered_ids;
-}
-
-void SyncNotifierRegistrar::DetachFromThreadForTest() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  thread_checker_.DetachFromThread();
-}
-
-SyncNotifierObserver* SyncNotifierRegistrar::ObjectIdToHandler(
-    const invalidation::ObjectId& id) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  IdHandlerMap::const_iterator it = id_to_handler_map_.find(id);
-  return (it == id_to_handler_map_.end()) ? NULL : it->second;
-}
-
-}  // namespace syncer