| /* |
| * 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/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() { |
| 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->ContextLifecycleObserverSet().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) |
| return; |
| |
| if (context->IsContextDestroyed()) { |
| ContextDestroyed(); |
| return; |
| } |
| ContextLifecycleStateChanged(context->ContextPauseState()); |
| } |
| |
| } // namespace blink |