| /* |
| * Copyright 2015 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef COBALT_DOM_PERFORMANCE_TIMING_H_ |
| #define COBALT_DOM_PERFORMANCE_TIMING_H_ |
| |
| #include "cobalt/script/wrappable.h" |
| |
| #include "base/time.h" |
| #include "cobalt/base/clock.h" |
| |
| namespace cobalt { |
| namespace dom { |
| |
| // Implements the PerformanceTiming IDL interface, as described here: |
| // https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/NavigationTiming/Overview.html#sec-navigation-timing-interface |
| class PerformanceTiming : public script::Wrappable { |
| public: |
| explicit PerformanceTiming(const scoped_refptr<base::Clock>& clock); |
| |
| // This attribute must return the time immediately after the user agent |
| // finishes prompting to unload the previous document. If there is no previous |
| // document, this attribute must return the time the current document is |
| // created. |
| uint64 navigation_start() const; |
| |
| // Custom, not in any spec. |
| |
| // Returns a clock that is relative to the navigation start time, and based |
| // off of the clock passed into Performance (the one that navigation start |
| // time was derived from). |
| scoped_refptr<base::OffsetClock> GetNavigationStartClock(); |
| |
| DEFINE_WRAPPABLE_TYPE(PerformanceTiming); |
| |
| private: |
| ~PerformanceTiming(); |
| |
| scoped_refptr<base::OffsetClock> navigation_start_clock_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PerformanceTiming); |
| }; |
| |
| } // namespace dom |
| } // namespace cobalt |
| |
| #endif // COBALT_DOM_PERFORMANCE_TIMING_H_ |