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/*
* Copyright (C) 2022 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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"
#include "WakeLock.h"
#include "DocumentInlines.h"
#include "EventLoop.h"
#include "Exception.h"
#include "FeaturePolicy.h"
#include "JSDOMPromiseDeferred.h"
#include "JSWakeLockSentinel.h"
#include "LocalDOMWindow.h"
#include "Page.h"
#include "PermissionController.h"
#include "PermissionQuerySource.h"
#include "PermissionState.h"
#include "WakeLockManager.h"
#include "WakeLockSentinel.h"
namespace WebCore {
WakeLock::WakeLock(Document* document)
: ContextDestructionObserver(document)
{
}
// https://www.w3.org/TR/screen-wake-lock/#the-request-method
void WakeLock::request(WakeLockType lockType, Ref<DeferredPromise>&& promise)
{
auto* document = this->document();
if (!document || !document->isFullyActive() || !document->page()) {
promise->reject(Exception { NotAllowedError, "Document is not fully active"_s });
return;
}
if (!isFeaturePolicyAllowedByDocumentAndAllOwners(FeaturePolicy::Type::ScreenWakeLock, *document, LogFeaturePolicyFailure::Yes)) {
promise->reject(Exception { NotAllowedError, "'screen-wake-lock' is not allowed by Feature-Policy"_s });
return;
}
if (document->visibilityState() == VisibilityState::Hidden) {
promise->reject(Exception { NotAllowedError, "Document is hidden"_s });
return;
}
// FIXME: The permission check can likely be dropped once the specification gets updated to only
// require transient activation (https://github.com/w3c/screen-wake-lock/pull/326).
bool hasTransientActivation = document->domWindow() && document->domWindow()->hasTransientActivation();
PermissionController::shared().query(document->clientOrigin(), PermissionDescriptor { PermissionName::ScreenWakeLock }, *document->page(), PermissionQuerySource::Window, [this, protectedThis = Ref { *this }, document = Ref { *document }, hasTransientActivation, promise = WTFMove(promise), lockType](std::optional<PermissionState> permission) mutable {
if (!permission || *permission == PermissionState::Prompt) {
if (hasTransientActivation || m_wasPreviouslyAuthorizedDueToTransientActivation) {
m_wasPreviouslyAuthorizedDueToTransientActivation = true;
permission = PermissionState::Granted;
} else
permission = PermissionState::Denied;
} else if (*permission == PermissionState::Denied)
m_wasPreviouslyAuthorizedDueToTransientActivation = false;
document->eventLoop().queueTask(TaskSource::ScreenWakelock, [protectedThis = WTFMove(protectedThis), document = WTFMove(document), promise = WTFMove(promise), lockType, permission]() mutable {
if (permission == PermissionState::Denied) {
promise->reject(Exception { NotAllowedError, "Permission was denied"_s });
return;
}
if (!document->isFullyActive()) {
promise->reject(Exception { NotAllowedError, "Document is not fully active"_s });
return;
}
if (document->visibilityState() == VisibilityState::Hidden) {
promise->reject(Exception { NotAllowedError, "Document is hidden"_s });
return;
}
auto lock = WakeLockSentinel::create(document, lockType);
promise->resolve<IDLInterface<WakeLockSentinel>>(lock.get());
document->wakeLockManager().addWakeLock(WTFMove(lock), document->pageID());
});
});
}
Document* WakeLock::document()
{
return downcast<Document>(scriptExecutionContext());
}
} // namespace WebCore
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