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Element-getAnimations.tentative.html
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<!doctype html>
<meta charset=utf-8>
<title>Element.getAnimations() for CSS animations</title>
<!-- TODO: Add a more specific link for this once it is specified. -->
<link rel="help" href="https://drafts.csswg.org/css-animations-2/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/testcommon.js"></script>
<style>
@keyframes anim1 {
to { left: 100px }
}
@keyframes anim2 {
to { top: 100px }
}
@keyframes multiPropAnim {
to { background: green, opacity: 0.5, left: 100px, top: 100px }
}
::before {
content: ''
}
::after {
content: ''
}
@keyframes empty { }
</style>
<div id="log"></div>
<script>
'use strict';
test(t => {
const div = addDiv(t);
assert_equals(div.getAnimations().length, 0,
'getAnimations returns an empty sequence for an element'
+ ' with no animations');
}, 'getAnimations for non-animated content');
promise_test(async t => {
const div = addDiv(t);
// Add an animation
div.style.animation = 'anim1 100s';
let animations = div.getAnimations();
assert_equals(animations.length, 1,
'getAnimations returns an Animation running CSS Animations');
await animations[0].ready;
// Add a second animation
div.style.animation = 'anim1 100s, anim2 100s';
animations = div.getAnimations();
assert_equals(animations.length, 2,
'getAnimations returns one CSSAnimation for each value of animation-name');
// (We don't check the order of the Animations since that is covered by tests
// later in this file.)
}, 'getAnimations for CSS Animations');
test(t => {
const div = addDiv(t, { style: 'animation: anim1 100s' });
assert_class_string(div.getAnimations()[0], 'CSSAnimation',
'Interface of returned animation is CSSAnimation');
}, 'getAnimations returns CSSAnimation objects for CSS Animations');
test(t => {
const div = addDiv(t);
// Add an animation that targets multiple properties
div.style.animation = 'multiPropAnim 100s';
assert_equals(div.getAnimations().length, 1,
'getAnimations returns only one Animation for a CSS Animation'
+ ' that targets multiple properties');
}, 'getAnimations for multi-property animations');
promise_test(async t => {
const div = addDiv(t);
// Add an animation
div.style.backgroundColor = 'red';
div.style.animation = 'anim1 100s';
getComputedStyle(div).backgroundColor;
// Wait until a frame after the animation starts, then add a transition
let animations = div.getAnimations();
await animations[0].ready;
await waitForFrame();
div.style.transition = 'all 100s';
div.style.backgroundColor = 'green';
animations = div.getAnimations();
assert_equals(animations.length, 2,
'getAnimations returns Animations for both animations and'
+ ' transitions that run simultaneously');
assert_class_string(animations[0], 'CSSTransition',
'First-returned animation is the CSS Transition');
assert_class_string(animations[1], 'CSSAnimation',
'Second-returned animation is the CSS Animation');
}, 'getAnimations for both CSS Animations and CSS Transitions at once');
async_test(t => {
const div = addDiv(t);
// Set up event listener
div.addEventListener('animationend', t.step_func(() => {
assert_equals(div.getAnimations().length, 0,
'getAnimations does not return Animations for finished '
+ ' (and non-forwards-filling) CSS Animations');
t.done();
}));
// Add a very short animation
div.style.animation = 'anim1 0.01s';
}, 'getAnimations for CSS Animations that have finished');
async_test(t => {
const div = addDiv(t);
// Set up event listener
div.addEventListener('animationend', t.step_func(() => {
assert_equals(div.getAnimations().length, 1,
'getAnimations returns Animations for CSS Animations that have'
+ ' finished but are filling forwards');
t.done();
}));
// Add a very short animation
div.style.animation = 'anim1 0.01s forwards';
}, 'getAnimations for CSS Animations that have finished but are'
+ ' forwards filling');
test(t => {
const div = addDiv(t);
div.style.animation = 'none 100s';
let animations = div.getAnimations();
assert_equals(animations.length, 0,
'getAnimations returns an empty sequence for an element'
+ ' with animation-name: none');
div.style.animation = 'none 100s, anim1 100s';
animations = div.getAnimations();
assert_equals(animations.length, 1,
'getAnimations returns Animations only for those CSS Animations whose'
+ ' animation-name is not none');
}, 'getAnimations for CSS Animations with animation-name: none');
test(t => {
const div = addDiv(t);
div.style.animation = 'missing 100s';
let animations = div.getAnimations();
assert_equals(animations.length, 0,
'getAnimations returns an empty sequence for an element'
+ ' with animation-name: missing');
div.style.animation = 'anim1 100s, missing 100s';
animations = div.getAnimations();
assert_equals(animations.length, 1,
'getAnimations returns Animations only for those CSS Animations whose'
+ ' animation-name is found');
}, 'getAnimations for CSS Animations with animation-name: missing');
promise_test(async t => {
const div = addDiv(t);
div.style.animation = 'anim1 100s, notyet 100s';
let animations = div.getAnimations();
assert_equals(animations.length, 1,
'getAnimations initally only returns Animations for CSS Animations whose'
+ ' animation-name is found');
await animations[0].ready;
await waitForFrame();
const keyframes = '@keyframes notyet { to { left: 100px; } }';
document.styleSheets[0].insertRule(keyframes, 0);
animations = div.getAnimations();
assert_equals(animations.length, 2,
'getAnimations includes Animation when @keyframes rule is added'
+ ' later');
await waitForAllAnimations(animations);
assert_true(animations[0].startTime < animations[1].startTime,
'Newly added animation has a later start time');
document.styleSheets[0].deleteRule(0);
}, 'getAnimations for CSS Animations where the @keyframes rule is added'
+ ' later');
test(t => {
const div = addDiv(t);
div.style.animation = 'anim1 100s, anim1 100s';
assert_equals(div.getAnimations().length, 2,
'getAnimations returns one Animation for each CSS animation-name'
+ ' even if the names are duplicated');
}, 'getAnimations for CSS Animations with duplicated animation-name');
test(t => {
const div = addDiv(t);
div.style.animation = 'empty 100s';
assert_equals(div.getAnimations().length, 1,
'getAnimations returns Animations for CSS animations with an'
+ ' empty keyframes rule');
}, 'getAnimations for CSS Animations with empty keyframes rule');
promise_test(async t => {
const div = addDiv(t);
div.style.animation = 'anim1 100s 100s';
const animations = div.getAnimations();
assert_equals(animations.length, 1,
'getAnimations returns animations for CSS animations whose'
+ ' delay makes them start later');
await animations[0].ready;
await waitForFrame();
assert_true(animations[0].startTime <= document.timeline.currentTime,
'For CSS Animations in delay phase, the start time of the Animation is'
+ ' not in the future');
}, 'getAnimations for CSS animations in delay phase');
test(t => {
const div = addDiv(t);
div.style.animation = 'anim1 0s 100s';
assert_equals(div.getAnimations().length, 1,
'getAnimations returns animations for CSS animations whose'
+ ' duration is zero');
div.remove();
}, 'getAnimations for zero-duration CSS Animations');
test(t => {
const div = addDiv(t);
div.style.animation = 'anim1 100s';
const originalAnimation = div.getAnimations()[0];
// Update pause state (an Animation change)
div.style.animationPlayState = 'paused';
const pendingAnimation = div.getAnimations()[0];
assert_equals(pendingAnimation.playState, 'paused',
'animation\'s play state is updated');
assert_equals(originalAnimation, pendingAnimation,
'getAnimations returns the same objects even when their'
+ ' play state changes');
// Update duration (an Animation change)
div.style.animationDuration = '200s';
const extendedAnimation = div.getAnimations()[0];
assert_equals(
extendedAnimation.effect.getTiming().duration,
200 * MS_PER_SEC,
'animation\'s duration has been updated'
);
assert_equals(originalAnimation, extendedAnimation,
'getAnimations returns the same objects even when their'
+ ' duration changes');
}, 'getAnimations returns objects with the same identity');
test(t => {
const div = addDiv(t);
div.style.animation = 'anim1 100s';
assert_equals(div.getAnimations().length, 1,
'getAnimations returns an animation before canceling');
const animation = div.getAnimations()[0];
animation.cancel();
assert_equals(div.getAnimations().length, 0,
'getAnimations does not return canceled animations');
animation.play();
assert_equals(div.getAnimations().length, 1,
'getAnimations returns canceled animations that have been re-started');
}, 'getAnimations for CSS Animations that are canceled');
promise_test(async t => {
const div = addDiv(t);
div.style.animation = 'anim2 100s';
await div.getAnimations()[0].ready;
// Prepend to the list and test that even though anim1 was triggered
// *after* anim2, it should come first because it appears first
// in the animation-name property.
div.style.animation = 'anim1 100s, anim2 100s';
let anims = div.getAnimations();
assert_equals(anims[0].animationName, 'anim1',
'animation order after prepending to list');
assert_equals(anims[1].animationName, 'anim2',
'animation order after prepending to list');
// Normally calling cancel and play would this push anim1 to the top of
// the stack but it shouldn't for CSS animations that map an the
// animation-name property.
const anim1 = anims[0];
anim1.cancel();
anim1.play();
anims = div.getAnimations();
assert_equals(anims[0].animationName, 'anim1',
'animation order after canceling and restarting');
assert_equals(anims[1].animationName, 'anim2',
'animation order after canceling and restarting');
}, 'getAnimations for CSS Animations follows animation-name order');
test(t => {
addStyle(t, { '#target::after': 'animation: anim1 10s;',
'#target::before': 'animation: anim1 10s;' });
const target = addDiv(t, { 'id': 'target' });
target.style.animation = 'anim1 100s';
const animations = target.getAnimations({ subtree: false });
assert_equals(animations.length, 1,
'Should find only the element');
assert_equals(animations[0].effect.target, target,
'Effect target should be the element');
}, '{ subtree: false } on a leaf element returns the element\'s animations'
+ ' and ignore pseudo-elements');
test(t => {
addStyle(t, { '#target::after': 'animation: anim1 10s;',
'#target::before': 'animation: anim1 10s;' });
const target = addDiv(t, { 'id': 'target' });
target.style.animation = 'anim1 100s';
const animations = target.getAnimations({ subtree: true });
assert_equals(animations.length, 3,
'getAnimations({ subtree: true }) ' +
'should return animations on pseudo-elements');
assert_equals(animations[0].effect.target, target,
'The animation targeting the parent element ' +
'should be returned first');
assert_equals(animations[0].effect.pseudoElement, null,
'The animation targeting the parent element ' +
'should be returned first')
assert_equals(animations[1].effect.pseudoElement, '::before',
'The animation targeting the ::before pseudo-element ' +
'should be returned second');
assert_equals(animations[2].effect.pseudoElement, '::after',
'The animation targeting the ::after pesudo-element ' +
'should be returned last');
}, '{ subtree: true } on a leaf element returns the element\'s animations'
+ ' and its pseudo-elements\' animations');
test(t => {
addStyle(t, { '#parent::after': 'animation: anim1 10s;',
'#parent::before': 'animation: anim1 10s;',
'#child::after': 'animation: anim1 10s;',
'#child::before': 'animation: anim1 10s;' });
const parent = addDiv(t, { 'id': 'parent' });
parent.style.animation = 'anim1 100s';
const child = addDiv(t, { 'id': 'child' });
child.style.animation = 'anim1 100s';
parent.appendChild(child);
const animations = parent.getAnimations({ subtree: false });
assert_equals(animations.length, 1,
'Should find only the element even if it has a child');
assert_equals(animations[0].effect.target, parent,
'Effect target should be the element');
}, '{ subtree: false } on an element with a child returns only the element\'s'
+ ' animations');
test(t => {
addStyle(t, { '#parent::after': 'animation: anim1 10s;',
'#parent::before': 'animation: anim1 10s;',
'#child::after': 'animation: anim1 10s;',
'#child::before': 'animation: anim1 10s;' });
const parent = addDiv(t, { 'id': 'parent' });
const child = addDiv(t, { 'id': 'child' });
parent.style.animation = 'anim1 100s';
child.style.animation = 'anim1 100s';
parent.appendChild(child);
const animations = parent.getAnimations({ subtree: true });
assert_equals(animations.length, 6,
'Should find all elements, pseudo-elements that parent has');
assert_equals(animations[0].effect.target, parent,
'The animation targeting the parent element ' +
'should be returned first');
assert_equals(animations[0].effect.pseudoElement, null,
'The animation targeting the parent element ' +
'should be returned first');
assert_equals(animations[1].effect.pseudoElement, '::before',
'The animation targeting the ::before pseudo-element ' +
'should be returned second');
assert_equals(animations[1].effect.target, parent,
'This ::before element should be child of parent element');
assert_equals(animations[2].effect.pseudoElement, '::after',
'The animation targeting the ::after pesudo-element ' +
'should be returned third');
assert_equals(animations[2].effect.target, parent,
'This ::after element should be child of parent element');
assert_equals(animations[3].effect.target, child,
'The animation targeting the child element ' +
'should be returned fourth');
assert_equals(animations[4].effect.pseudoElement, '::before',
'The animation targeting the ::before pseudo-element ' +
'should be returned fifth');
assert_equals(animations[4].effect.target, child,
'This ::before element should be child of child element');
assert_equals(animations[5].effect.pseudoElement, '::after',
'The animation targeting the ::after pesudo-element ' +
'should be returned last');
assert_equals(animations[5].effect.target, child,
'This ::after element should be child of child element');
}, '{ subtree: true } on an element with a child returns animations from the'
+ ' element, its pseudo-elements, its child and its child pseudo-elements');
test(t => {
const parent = addDiv(t, { 'id': 'parent' });
const child1 = addDiv(t, { 'id': 'child1' });
const grandchild1 = addDiv(t, { 'id': 'grandchild1' });
const grandchild2 = addDiv(t, { 'id': 'grandchild2' });
const child2 = addDiv(t, { 'id': 'child2' });
parent.style.animation = 'anim1 100s';
child1.style.animation = 'anim1 100s';
grandchild1.style.animation = 'anim1 100s';
grandchild2.style.animation = 'anim1 100s';
child2.style.animation = 'anim1 100s';
parent.appendChild(child1);
child1.appendChild(grandchild1);
child1.appendChild(grandchild2);
parent.appendChild(child2);
const animations = parent.getAnimations({ subtree: true });
assert_equals(
parent.getAnimations({ subtree: true }).length, 5,
'Should find all descendants of the element');
assert_equals(animations[0].effect.target, parent,
'The animation targeting the parent element ' +
'should be returned first');
assert_equals(animations[1].effect.target, child1,
'The animation targeting the child1 element ' +
'should be returned second');
assert_equals(animations[2].effect.target, grandchild1,
'The animation targeting the grandchild1 element ' +
'should be returned third');
assert_equals(animations[3].effect.target, grandchild2,
'The animation targeting the grandchild2 element ' +
'should be returned fourth');
assert_equals(animations[4].effect.target, child2,
'The animation targeting the child2 element ' +
'should be returned last');
}, '{ subtree: true } on an element with many descendants returns animations'
+ ' from all the descendants');
</script>