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// Copyright 2014 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/storage/dom_window_storage_controller.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/events/event.h"
#include "third_party/blink/renderer/core/page/page.h"
#include "third_party/blink/renderer/modules/storage/dom_window_storage.h"
namespace blink {
DOMWindowStorageController::DOMWindowStorageController(Document& document)
: Supplement<Document>(document) {
document.domWindow()->RegisterEventListenerObserver(this);
}
void DOMWindowStorageController::Trace(Visitor* visitor) {
Supplement<Document>::Trace(visitor);
}
// static
const char DOMWindowStorageController::kSupplementName[] =
"DOMWindowStorageController";
// static
DOMWindowStorageController& DOMWindowStorageController::From(
Document& document) {
DOMWindowStorageController* controller =
Supplement<Document>::From<DOMWindowStorageController>(document);
if (!controller) {
controller = MakeGarbageCollected<DOMWindowStorageController>(document);
ProvideTo(document, controller);
}
return *controller;
}
void DOMWindowStorageController::DidAddEventListener(
LocalDOMWindow* window,
const AtomicString& event_type) {
if (event_type == event_type_names::kStorage) {
// Creating these blink::Storage objects informs the system that we'd like
// to receive notifications about storage events that might be triggered in
// other processes. Rather than subscribe to these notifications explicitly,
// we subscribe to them implicitly to simplify the work done by the system.
DOMWindowStorage::From(*window).localStorage(IGNORE_EXCEPTION_FOR_TESTING);
DOMWindowStorage::From(*window).sessionStorage(
IGNORE_EXCEPTION_FOR_TESTING);
}
}
} // namespace blink
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