| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>KeyframeEffect.target</title> |
| <link rel="help" |
| href="https://drafts.csswg.org/web-animations/#dom-keyframeeffect-target"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../../testcommon.js"></script> |
| <body> |
| <div id="log"></div> |
| <script> |
| 'use strict'; |
| |
| const gKeyFrames = { 'marginLeft': ['0px', '100px'] }; |
| |
| test(t => { |
| const div = createDiv(t); |
| const effect = new KeyframeEffect(null, gKeyFrames, 100 * MS_PER_SEC); |
| effect.target = div; |
| |
| const anim = new Animation(effect, document.timeline); |
| anim.play(); |
| |
| anim.currentTime = 50 * MS_PER_SEC; |
| assert_equals(getComputedStyle(div).marginLeft, '50px', |
| 'Value at 50% progress'); |
| }, 'Test setting target before constructing the associated animation'); |
| |
| test(t => { |
| const div = createDiv(t); |
| div.style.marginLeft = '10px'; |
| const effect = new KeyframeEffect(null, gKeyFrames, 100 * MS_PER_SEC); |
| const anim = new Animation(effect, document.timeline); |
| anim.play(); |
| |
| anim.currentTime = 50 * MS_PER_SEC; |
| assert_equals(getComputedStyle(div).marginLeft, '10px', |
| 'Value at 50% progress before setting new target'); |
| effect.target = div; |
| assert_equals(getComputedStyle(div).marginLeft, '50px', |
| 'Value at 50% progress after setting new target'); |
| }, 'Test setting target from null to a valid target'); |
| |
| test(t => { |
| const div = createDiv(t); |
| div.style.marginLeft = '10px'; |
| const anim = div.animate(gKeyFrames, 100 * MS_PER_SEC); |
| |
| anim.currentTime = 50 * MS_PER_SEC; |
| assert_equals(getComputedStyle(div).marginLeft, '50px', |
| 'Value at 50% progress before clearing the target') |
| |
| anim.effect.target = null; |
| assert_equals(getComputedStyle(div).marginLeft, '10px', |
| 'Value after clearing the target') |
| }, 'Test setting target from a valid target to null'); |
| |
| test(t => { |
| const a = createDiv(t); |
| const b = createDiv(t); |
| a.style.marginLeft = '10px'; |
| b.style.marginLeft = '20px'; |
| const anim = a.animate(gKeyFrames, 100 * MS_PER_SEC); |
| |
| anim.currentTime = 50 * MS_PER_SEC; |
| assert_equals(getComputedStyle(a).marginLeft, '50px', |
| 'Value of 1st element (currently targeted) before ' + |
| 'changing the effect target'); |
| assert_equals(getComputedStyle(b).marginLeft, '20px', |
| 'Value of 2nd element (currently not targeted) before ' + |
| 'changing the effect target'); |
| anim.effect.target = b; |
| assert_equals(getComputedStyle(a).marginLeft, '10px', |
| 'Value of 1st element (currently not targeted) after ' + |
| 'changing the effect target'); |
| assert_equals(getComputedStyle(b).marginLeft, '50px', |
| 'Value of 2nd element (currently targeted) after ' + |
| 'changing the effect target'); |
| |
| // This makes sure the animation property is changed correctly on new |
| // targeted element. |
| anim.currentTime = 75 * MS_PER_SEC; |
| assert_equals(getComputedStyle(b).marginLeft, '75px', |
| 'Value of 2nd target (currently targeted) after ' + |
| 'changing the animation current time.'); |
| }, 'Test setting target from a valid target to another target'); |
| |
| </script> |
| </body> |
