| /* |
| * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
| * Copyright (C) 2013 Google 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 "core/dom/ContextLifecycleNotifier.h" |
| |
| #include "core/dom/PausableObject.h" |
| #include "platform/wtf/AutoReset.h" |
| |
| namespace blink { |
| |
| void ContextLifecycleNotifier::NotifyResumingPausableObjects() { |
| AutoReset<IterationState> scope(&iteration_state_, kAllowingNone); |
| for (ContextLifecycleObserver* observer : observers_) { |
| if (observer->ObserverType() != |
| ContextLifecycleObserver::kPausableObjectType) |
| continue; |
| PausableObject* pausable_object = static_cast<PausableObject*>(observer); |
| #if DCHECK_IS_ON() |
| DCHECK_EQ(pausable_object->GetExecutionContext(), Context()); |
| DCHECK(pausable_object->PauseIfNeededCalled()); |
| #endif |
| pausable_object->Unpause(); |
| } |
| } |
| |
| void ContextLifecycleNotifier::NotifySuspendingPausableObjects() { |
| AutoReset<IterationState> scope(&iteration_state_, kAllowingNone); |
| for (ContextLifecycleObserver* observer : observers_) { |
| if (observer->ObserverType() != |
| ContextLifecycleObserver::kPausableObjectType) |
| continue; |
| PausableObject* pausable_object = static_cast<PausableObject*>(observer); |
| #if DCHECK_IS_ON() |
| DCHECK_EQ(pausable_object->GetExecutionContext(), Context()); |
| DCHECK(pausable_object->PauseIfNeededCalled()); |
| #endif |
| pausable_object->Pause(); |
| } |
| } |
| |
| unsigned ContextLifecycleNotifier::PausableObjectCount() const { |
| DCHECK(!IsIteratingOverObservers()); |
| unsigned pausable_objects = 0; |
| for (ContextLifecycleObserver* observer : observers_) { |
| if (observer->ObserverType() != |
| ContextLifecycleObserver::kPausableObjectType) |
| continue; |
| pausable_objects++; |
| } |
| return pausable_objects; |
| } |
| |
| #if DCHECK_IS_ON() |
| bool ContextLifecycleNotifier::Contains(PausableObject* object) const { |
| DCHECK(!IsIteratingOverObservers()); |
| for (ContextLifecycleObserver* observer : observers_) { |
| if (observer->ObserverType() != |
| ContextLifecycleObserver::kPausableObjectType) |
| continue; |
| PausableObject* pausable_object = static_cast<PausableObject*>(observer); |
| if (pausable_object == object) |
| return true; |
| } |
| return false; |
| } |
| #endif |
| |
| } // namespace blink |