| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef WebViewScheduler_h |
| #define WebViewScheduler_h |
| |
| #include "WebCommon.h" |
| #include "public/platform/WebPassOwnPtr.h" |
| |
| namespace blink { |
| |
| class WebFrameScheduler; |
| |
| class BLINK_PLATFORM_EXPORT WebViewScheduler { |
| public: |
| virtual ~WebViewScheduler() { } |
| |
| // The scheduler may throttle tasks associated with background pages. |
| virtual void setPageVisible(bool) = 0; |
| |
| // Creaters a new WebFrameScheduler, the caller is responsible for deleting it. |
| virtual WebPassOwnPtr<WebFrameScheduler> createFrameScheduler() = 0; |
| |
| // Instructs this WebViewScheduler to use virtual time. When virtual time is enabled |
| // the system doesn't actually sleep for the delays between tasks before executing |
| // them. E.g: A-E are delayed tasks |
| // |
| // | A B C D E (normal) |
| // |-----------------------------> time |
| // |
| // |ABCDE (virtual time) |
| // |-----------------------------> time |
| virtual void enableVirtualTime() = 0; |
| |
| // Controls whether or not virtual time is allowed to advance. If virtual time |
| // is not allowed to advance then delayed tasks posted to the WebTaskRunners owned |
| // by any child WebFrameSchedulers will be paused. If virtual time is allowed to |
| // advance then tasks will be run in time order (as usual) but virtual time will |
| // fast forward so that the system doesn't actually sleep for the delays between |
| // tasks before executing them. |
| virtual void setAllowVirtualTimeToAdvance(bool) = 0; |
| }; |
| |
| } // namespace blink |
| |
| #endif // WebViewScheduler |
