| // Copyright 2016 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 "third_party/blink/renderer/modules/indexeddb/idb_observer.h" |
| |
| #include <bitset> |
| |
| #include "third_party/blink/renderer/bindings/modules/v8/to_v8_for_modules.h" |
| #include "third_party/blink/renderer/bindings/modules/v8/v8_binding_for_modules.h" |
| #include "third_party/blink/renderer/bindings/modules/v8/v8_idb_observer_callback.h" |
| #include "third_party/blink/renderer/modules/indexed_db_names.h" |
| #include "third_party/blink/renderer/modules/indexeddb/idb_database.h" |
| #include "third_party/blink/renderer/modules/indexeddb/idb_observer_changes.h" |
| #include "third_party/blink/renderer/modules/indexeddb/idb_observer_init.h" |
| #include "third_party/blink/renderer/modules/indexeddb/idb_transaction.h" |
| #include "third_party/blink/renderer/platform/bindings/exception_state.h" |
| |
| namespace blink { |
| |
| IDBObserver* IDBObserver::Create(V8IDBObserverCallback* callback) { |
| return new IDBObserver(callback); |
| } |
| |
| IDBObserver::IDBObserver(V8IDBObserverCallback* callback) |
| : callback_(callback) {} |
| |
| void IDBObserver::observe(IDBDatabase* database, |
| IDBTransaction* transaction, |
| const IDBObserverInit* options, |
| ExceptionState& exception_state) { |
| if (!transaction->IsActive()) { |
| exception_state.ThrowDOMException( |
| DOMExceptionCode::kTransactionInactiveError, |
| transaction->InactiveErrorMessage()); |
| return; |
| } |
| if (transaction->IsVersionChange()) { |
| exception_state.ThrowDOMException( |
| DOMExceptionCode::kTransactionInactiveError, |
| IDBDatabase::kCannotObserveVersionChangeTransaction); |
| return; |
| } |
| if (!database->Backend()) { |
| exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError, |
| IDBDatabase::kDatabaseClosedErrorMessage); |
| return; |
| } |
| if (!options->hasOperationTypes()) { |
| exception_state.ThrowTypeError( |
| "operationTypes not specified in observe options->"); |
| return; |
| } |
| if (options->operationTypes().IsEmpty()) { |
| exception_state.ThrowTypeError("operationTypes must be populated."); |
| return; |
| } |
| |
| std::bitset<kWebIDBOperationTypeCount> types; |
| for (const auto& operation_type : options->operationTypes()) { |
| if (operation_type == indexed_db_names::kAdd) { |
| types[kWebIDBAdd] = true; |
| } else if (operation_type == indexed_db_names::kPut) { |
| types[kWebIDBPut] = true; |
| } else if (operation_type == indexed_db_names::kDelete) { |
| types[kWebIDBDelete] = true; |
| } else if (operation_type == indexed_db_names::kClear) { |
| types[kWebIDBClear] = true; |
| } else { |
| exception_state.ThrowTypeError( |
| "Unknown operation type in observe options: " + operation_type); |
| return; |
| } |
| } |
| |
| int32_t observer_id = |
| database->AddObserver(this, transaction->Id(), options->transaction(), |
| options->noRecords(), options->values(), types); |
| observer_ids_.insert(observer_id, database); |
| } |
| |
| void IDBObserver::unobserve(IDBDatabase* database, |
| ExceptionState& exception_state) { |
| if (!database->Backend()) { |
| exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError, |
| IDBDatabase::kDatabaseClosedErrorMessage); |
| return; |
| } |
| |
| Vector<int32_t> observer_ids_to_remove; |
| for (const auto& it : observer_ids_) { |
| if (it.value == database) |
| observer_ids_to_remove.push_back(it.key); |
| } |
| observer_ids_.RemoveAll(observer_ids_to_remove); |
| |
| if (!observer_ids_to_remove.IsEmpty()) |
| database->RemoveObservers(observer_ids_to_remove); |
| } |
| |
| void IDBObserver::Trace(blink::Visitor* visitor) { |
| visitor->Trace(callback_); |
| visitor->Trace(observer_ids_); |
| ScriptWrappable::Trace(visitor); |
| } |
| |
| } // namespace blink |