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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
* Copyright (C) 2012, 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
#include "NotificationCenter.h"
#include "Notification.h"
#include "ScriptExecutionContext.h"
#include "SecurityOrigin.h"
namespace WebCore {
Ref<NotificationCenter> NotificationCenter::create(ScriptExecutionContext* context, NotificationClient* client)
{
auto notificationCenter = adoptRef(*new NotificationCenter(context, client));
notificationCenter->suspendIfNeeded();
return notificationCenter;
}
NotificationCenter::NotificationCenter(ScriptExecutionContext* context, NotificationClient* client)
: ActiveDOMObject(context)
, m_client(client)
, m_timer([this]() { timerFired(); })
{
}
#if ENABLE(LEGACY_NOTIFICATIONS)
RefPtr<Notification> NotificationCenter::createNotification(const String& iconURI, const String& title, const String& body, ExceptionCode& ec)
{
if (!m_client) {
ec = INVALID_STATE_ERR;
return nullptr;
}
return Notification::create(title, body, iconURI, scriptExecutionContext(), ec, this);
}
int NotificationCenter::checkPermission()
{
if (!m_client || !scriptExecutionContext())
return NotificationClient::PermissionDenied;
switch (scriptExecutionContext()->securityOrigin()->canShowNotifications()) {
case SecurityOrigin::AlwaysAllow:
return NotificationClient::PermissionAllowed;
case SecurityOrigin::AlwaysDeny:
return NotificationClient::PermissionDenied;
case SecurityOrigin::Ask:
return m_client->checkPermission(scriptExecutionContext());
}
ASSERT_NOT_REACHED();
return m_client->checkPermission(scriptExecutionContext());
}
void NotificationCenter::requestPermission(const RefPtr<VoidCallback>& callback)
{
if (!m_client || !scriptExecutionContext())
return;
switch (scriptExecutionContext()->securityOrigin()->canShowNotifications()) {
case SecurityOrigin::AlwaysAllow:
case SecurityOrigin::AlwaysDeny:
if (m_callbacks.isEmpty()) {
ref(); // Balanced by the derefs in NotificationCenter::stop and NotificationCenter::timerFired.
m_timer.startOneShot(0);
}
m_callbacks.append([callback]() {
if (callback)
callback->handleEvent();
});
return;
case SecurityOrigin::Ask:
m_client->requestPermission(scriptExecutionContext(), callback.get());
return;
}
ASSERT_NOT_REACHED();
m_client->requestPermission(scriptExecutionContext(), callback.get());
}
#endif
void NotificationCenter::stop()
{
if (!m_client)
return;
// Clear m_client immediately to guarantee reentrant calls to NotificationCenter do nothing.
// Also protect |this| so it's not indirectly destroyed under us by work done by the client.
auto& client = *std::exchange(m_client, nullptr);
Ref<NotificationCenter> protector(*this);
if (!m_callbacks.isEmpty())
deref(); // Balanced by the ref in NotificationCenter::requestPermission.
m_timer.stop();
m_callbacks.clear();
client.cancelRequestsForPermission(scriptExecutionContext());
client.clearNotifications(scriptExecutionContext());
}
const char* NotificationCenter::activeDOMObjectName() const
{
return "NotificationCenter";
}
bool NotificationCenter::canSuspendForDocumentSuspension() const
{
// We don't need to worry about Notifications because those are ActiveDOMObject too.
// The NotificationCenter can safely be suspended if there are no pending permission requests.
return m_callbacks.isEmpty() && (!m_client || !m_client->hasPendingPermissionRequests(scriptExecutionContext()));
}
void NotificationCenter::timerFired()
{
ASSERT(m_client);
auto callbacks = WTFMove(m_callbacks);
for (auto& callback : callbacks)
callback();
deref(); // Balanced by the ref in NotificationCenter::requestPermission.
}
} // namespace WebCore
#endif // ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
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