public NotificationEmitter {

public:

explicit DOMStorageAgent(Environment* env);

~DOMStorageAgent() override;

void Wire(protocol::UberDispatcher* dispatcher);

protocol::DispatchResponse enable() override;

protocol::DispatchResponse disable() override;

protocol::DispatchResponse getDOMStorageItems(

std::unique_ptr<protocol::DOMStorage::StorageId> storageId,

std::unique_ptr<protocol::Array<protocol::Array<protocol::String>>>*

items) override;

protocol::DispatchResponse setDOMStorageItem(

std::unique_ptr<protocol::DOMStorage::StorageId> storageId,

const std::string& key,

const std::string& value) override;

protocol::DispatchResponse removeDOMStorageItem(

std::unique_ptr<protocol::DOMStorage::StorageId> storageId,

const std::string& key) override;

protocol::DispatchResponse clear(

std::unique_ptr<protocol::DOMStorage::StorageId> storageId) override;

void domStorageItemAdded(v8::Local<v8::Context> context,

v8::Local<v8::Object> params);

void domStorageItemRemoved(v8::Local<v8::Context> context,

v8::Local<v8::Object> params);

void domStorageItemUpdated(v8::Local<v8::Context> context,

v8::Local<v8::Object> params);

void domStorageItemsCleared(v8::Local<v8::Context> context,

v8::Local<v8::Object> params);

void registerStorage(v8::Local<v8::Context> context,

v8::Local<v8::Object> params);

bool canEmit(const std::string& domain) override;

DOMStorageAgent(const DOMStorageAgent&) = delete;

DOMStorageAgent& operator=(const DOMStorageAgent&) = delete;

private:

typedef std::unordered_map<std::u16string, std::u16string> StorageMap;

std::optional<node::webstorage::Storage*> getWebStorage(

bool is_local_storage);

std::unique_ptr<protocol::DOMStorage::Frontend> frontend_;

StorageMap local_storage_map_ = {};

StorageMap session_storage_map_ = {};

bool enabled_ = false;

Environment* env_;