1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::bindings::codegen::Bindings::PerformanceBinding;
use dom::bindings::codegen::Bindings::PerformanceBinding::PerformanceMethods;
use dom::bindings::js::{JS, Root};
use dom::bindings::num::Finite;
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::performancetiming::PerformanceTiming;
use dom::window::Window;
use time;
pub type DOMHighResTimeStamp = Finite<f64>;
#[dom_struct]
pub struct Performance {
reflector_: Reflector,
timing: JS<PerformanceTiming>,
}
impl Performance {
fn new_inherited(window: &Window,
navigation_start: u64,
navigation_start_precise: f64) -> Performance {
Performance {
reflector_: Reflector::new(),
timing: JS::from_ref(&*PerformanceTiming::new(window,
navigation_start,
navigation_start_precise)),
}
}
pub fn new(window: &Window,
navigation_start: u64,
navigation_start_precise: f64) -> Root<Performance> {
reflect_dom_object(box Performance::new_inherited(window,
navigation_start,
navigation_start_precise),
window,
PerformanceBinding::Wrap)
}
}
impl PerformanceMethods for Performance {
// https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/NavigationTiming/Overview.html#performance-timing-attribute
fn Timing(&self) -> Root<PerformanceTiming> {
Root::from_ref(&*self.timing)
}
// https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/HighResolutionTime/Overview.html#dom-performance-now
fn Now(&self) -> DOMHighResTimeStamp {
let nav_start = self.timing.navigation_start_precise();
let now = (time::precise_time_ns() as f64 - nav_start) / 1000000 as f64;
Finite::wrap(now)
}
}
|
