/* * 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. * */ #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_EXECUTION_CONTEXT_EXECUTION_CONTEXT_LIFECYCLE_STATE_OBSERVER_H_ #define THIRD_PARTY_BLINK_RENDERER_CORE_EXECUTION_CONTEXT_EXECUTION_CONTEXT_LIFECYCLE_STATE_OBSERVER_H_ #include "base/dcheck_is_on.h" #include "third_party/blink/public/mojom/frame/lifecycle.mojom-blink-forward.h" #include "third_party/blink/renderer/core/core_export.h" #include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h" namespace blink { // A ExecutionContextLifecycleStateObserver responds to situations where Blink // is pausing a context or freezing a frame. // // Context lifecycle state changes can happen in cases such as: // - modal dialogs during script execution (e.g. window.alert, window.print) // - script execution stopped at a debugger breakpoint // - frozen contexts (resource coordinator background tasks, iframe freezing) // // The scheduler will automatically suspend certain task queues for the duration // that the page is paused. // // Objects with asynchronous activity, especially activity that may have an // observable effect on web-visible state, on should suspend that activity while // the page is paused by overriding ContextLifecycleStateChanged(). // // https://html.spec.whatwg.org/C/#pause // https://wicg.github.io/page-lifecycle/spec.html class CORE_EXPORT ExecutionContextLifecycleStateObserver : public ExecutionContextLifecycleObserver { … }; } // namespace blink #endif // THIRD_PARTY_BLINK_RENDERER_CORE_EXECUTION_CONTEXT_EXECUTION_CONTEXT_LIFECYCLE_STATE_OBSERVER_H_
Codebase Browser
chromium