Send IndexedDB observations through IDBDatabaseCallbacks.

content/child/indexed_db/indexed_db_dispatcher.cc

 // Copyright 2013 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 "content/child/indexed_db/indexed_db_dispatcher.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "base/threading/thread_local.h"
 #include "content/child/indexed_db/indexed_db_key_builders.h"
 #include "content/child/indexed_db/webidbcursor_impl.h"
-#include "content/common/indexed_db/indexed_db_messages.h"
 #include "ipc/ipc_channel.h"
 #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBDatabaseCallbacks.h"
 #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBObservation.h"
 
 using blink::WebIDBKey;
 using blink::WebIDBObservation;
-using blink::WebIDBObserver;
 using base::ThreadLocalPointer;
 
 namespace content {
 static base::LazyInstance<ThreadLocalPointer<IndexedDBDispatcher> >::Leaky
     g_idb_dispatcher_tls = LAZY_INSTANCE_INITIALIZER;
 
 namespace {
 
 IndexedDBDispatcher* const kHasBeenDeleted =
     reinterpret_cast<IndexedDBDispatcher*>(0x1);
@@ skipping 23 matching lines @@
   IndexedDBDispatcher* dispatcher = new IndexedDBDispatcher();
   if (WorkerThread::GetCurrentId())
     WorkerThread::AddObserver(dispatcher);
   return dispatcher;
 }
 
 void IndexedDBDispatcher::WillStopCurrentWorkerThread() {
   delete this;
 }
 
-std::vector<WebIDBObservation> IndexedDBDispatcher::ConvertObservations(
-    const std::vector<IndexedDBMsg_Observation>& idb_observations) {
-  std::vector<WebIDBObservation> web_observations;
-  for (const auto& idb_observation : idb_observations) {
-    WebIDBObservation web_observation;
-    web_observation.objectStoreId = idb_observation.object_store_id;
-    web_observation.type = idb_observation.type;
-    web_observation.keyRange =
-        WebIDBKeyRangeBuilder::Build(idb_observation.key_range);
-    // TODO(palakj): Assign value to web_observation.
-    web_observations.push_back(std::move(web_observation));
-  }
-  return web_observations;
-}
-
-void IndexedDBDispatcher::OnMessageReceived(const IPC::Message& msg) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(IndexedDBDispatcher, msg)
-    IPC_MESSAGE_HANDLER(IndexedDBMsg_DatabaseCallbacksChanges,
-                        OnDatabaseChanges)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  // If a message gets here, IndexedDBMessageFilter already determined that it
-  // is an IndexedDB message.
-  DCHECK(handled) << "Didn't handle a message defined at line "
-                  << IPC_MESSAGE_ID_LINE(msg.type());
-}
-
-int32_t IndexedDBDispatcher::RegisterObserver(
-    std::unique_ptr<WebIDBObserver> observer) {
-  return observers_.Add(observer.release());
-}
-
-void IndexedDBDispatcher::RemoveObservers(
-    const std::vector<int32_t>& observer_ids_to_remove) {
-  for (int32_t id : observer_ids_to_remove)
-    observers_.Remove(id);
-}
-
 void IndexedDBDispatcher::RegisterMojoOwnedCallbacks(
     IndexedDBCallbacksImpl::InternalState* callbacks) {
   mojo_owned_callback_state_[callbacks] = base::WrapUnique(callbacks);
 }
 
 void IndexedDBDispatcher::UnregisterMojoOwnedCallbacks(
     IndexedDBCallbacksImpl::InternalState* callbacks) {
   if (in_destructor_)
     return;
 
@@ skipping 12 matching lines @@
     blink::WebIDBDatabaseCallbacks* callbacks) {
   if (in_destructor_)
     return;
 
   auto it = mojo_owned_database_callback_state_.find(callbacks);
   DCHECK(it != mojo_owned_database_callback_state_.end());
   it->second.release();
   mojo_owned_database_callback_state_.erase(it);
 }
 
-void IndexedDBDispatcher::OnDatabaseChanges(
-    int32_t ipc_thread_id,
-    const IndexedDBMsg_ObserverChanges& changes) {
-  DCHECK_EQ(ipc_thread_id, CurrentWorkerId());
-  std::vector<WebIDBObservation> observations(
-      ConvertObservations(changes.observations));
-  for (auto& it : changes.observation_index) {
-    WebIDBObserver* observer = observers_.Lookup(it.first);
-    // An observer can be removed from the renderer, but still exist in the
-    // backend. Moreover, observer might have recorded some changes before being
-    // removed from the backend and thus, have its id be present in changes.
-    if (!observer)
-      continue;
-    observer->onChange(observations, std::move(it.second));
-  }
-}
-
 void IndexedDBDispatcher::RegisterCursor(WebIDBCursorImpl* cursor) {
   DCHECK(!base::ContainsValue(cursors_, cursor));
   cursors_.insert(cursor);
 }
 
 void IndexedDBDispatcher::UnregisterCursor(WebIDBCursorImpl* cursor) {
   DCHECK(base::ContainsValue(cursors_, cursor));
   cursors_.erase(cursor);
 }
 
 void IndexedDBDispatcher::ResetCursorPrefetchCaches(
     int64_t transaction_id,
     WebIDBCursorImpl* exception_cursor) {
   for (WebIDBCursorImpl* cursor : cursors_) {
     if (cursor != exception_cursor &&
         cursor->transaction_id() == transaction_id)
       cursor->ResetPrefetchCache();
   }
 }
 
 }  // namespace content