blob: 11a1f7d6940e85918da632ff97cd3ee6f5f2b2b7 [file] [log] [blame]
/*
* Copyright (C) 2008 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 COMPUTER, INC. ``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 COMPUTER, INC. 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 "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_state_observer.h"
#include "third_party/blink/public/mojom/frame/lifecycle.mojom-blink.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/platform/instrumentation/instance_counters.h"
namespace blink {
ExecutionContextLifecycleStateObserver::ExecutionContextLifecycleStateObserver(
ExecutionContext* execution_context)
: ExecutionContextLifecycleObserver(execution_context, kStateObjectType) {
DCHECK(!execution_context || execution_context->IsContextThread());
InstanceCounters::IncrementCounter(
InstanceCounters::kContextLifecycleStateObserverCounter);
}
ExecutionContextLifecycleStateObserver::ExecutionContextLifecycleStateObserver(
Document* document)
: ExecutionContextLifecycleStateObserver(
document ? document->ToExecutionContext() : nullptr) {}
ExecutionContextLifecycleStateObserver::
~ExecutionContextLifecycleStateObserver() {
InstanceCounters::DecrementCounter(
InstanceCounters::kContextLifecycleStateObserverCounter);
#if DCHECK_IS_ON()
DCHECK(update_state_if_needed_called_);
#endif
}
void ExecutionContextLifecycleStateObserver::UpdateStateIfNeeded() {
#if DCHECK_IS_ON()
DCHECK(!update_state_if_needed_called_);
update_state_if_needed_called_ = true;
#endif
if (ExecutionContext* context = GetExecutionContext()) {
#if DCHECK_IS_ON()
DCHECK(context->ContextLifecycleObserverList().HasObserver(this));
#endif
mojom::blink::FrameLifecycleState pause_state =
context->ContextPauseState();
if (pause_state != mojom::blink::FrameLifecycleState::kRunning)
ContextLifecycleStateChanged(pause_state);
}
}
void ExecutionContextLifecycleStateObserver::SetExecutionContext(
ExecutionContext* context) {
ExecutionContextLifecycleObserver::SetExecutionContext(context);
if (context->IsContextDestroyed()) {
ContextDestroyed();
return;
}
ContextLifecycleStateChanged(context->ContextPauseState());
}
} // namespace blink