handoff.mjs
1.34 KB
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
import { appearAnimationStore } from './store.mjs';
import { appearStoreId } from './store-id.mjs';
function handoffOptimizedAppearAnimation(elementId, valueName, frame) {
const storeId = appearStoreId(elementId, valueName);
const optimisedAnimation = appearAnimationStore.get(storeId);
if (!optimisedAnimation) {
return null;
}
const { animation, startTime } = optimisedAnimation;
function cancelAnimation() {
window.MotionCancelOptimisedAnimation?.(elementId, valueName, frame);
}
/**
* We can cancel the animation once it's finished now that we've synced
* with Motion.
*
* Prefer onfinish over finished as onfinish is backwards compatible with
* older browsers.
*/
animation.onfinish = cancelAnimation;
if (startTime === null || window.MotionHandoffIsComplete?.(elementId)) {
/**
* If the startTime is null, this animation is the Paint Ready detection animation
* and we can cancel it immediately without handoff.
*
* Or if we've already handed off the animation then we're now interrupting it.
* In which case we need to cancel it.
*/
cancelAnimation();
return null;
}
else {
return startTime;
}
}
export { handoffOptimizedAppearAnimation };
//# sourceMappingURL=handoff.mjs.map