| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>ScrollTimeline current time algorithm - NaN cases</title> |
| <link rel="help" href="https://wicg.github.io/scroll-animations/#current-time-algorithm"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| .scroller { |
| height: 100px; |
| width: 100px; |
| overflow: auto; |
| } |
| |
| .content { |
| height: 500px; |
| width: 500px; |
| } |
| </style> |
| |
| <div id='inlineScroller' class='scroller' style='display: inline;'> |
| <div class='content'></div> |
| </div> |
| <script> |
| 'use strict'; |
| |
| // TODO(smcgruer): In many of the tests below, timeRange is specified when it |
| // should not need to be. This is an artifact of the initial Chrome |
| // implementation which doesn't support timeRange: 'auto'. These should be |
| // removed in the future. |
| |
| test(function() { |
| const scroller = document.querySelector('#inlineScroller'); |
| const scrollTimeline = new ScrollTimeline( |
| { scrollSource: scroller, timeRange: 100, orientation: 'block' }); |
| |
| assert_equals(scrollTimeline.currentTime, null); |
| }, 'currentTime should be null for a display: inline scrollSource'); |
| </script> |
| |
| <div id='displayNoneScroller' class='scroller' style='display: none;'> |
| <div class='content'></div> |
| </div> |
| <script> |
| test(function() { |
| const scroller = document.querySelector('#displayNoneScroller'); |
| const scrollTimeline = new ScrollTimeline( |
| { scrollSource: scroller, timeRange: 100, orientation: 'block' }); |
| |
| assert_equals(scrollTimeline.currentTime, null); |
| }, 'currentTime should be null for a display: none scrollSource'); |
| </script> |
| |
| <script> |
| test(function() { |
| const scroller = document.createElement('div'); |
| const content = document.createElement('div'); |
| |
| scroller.style.overflow = 'auto'; |
| scroller.style.height = '100px'; |
| scroller.style.width = '100px'; |
| content.style.height = '250px'; |
| content.style.width = '250px'; |
| |
| scroller.appendChild(content); |
| |
| const scrollTimeline = new ScrollTimeline( |
| { scrollSource: scroller, timeRange: 100, orientation: 'block' }); |
| |
| assert_equals(scrollTimeline.currentTime, null); |
| }, 'currentTime should be null for an unattached scrollSource'); |
| </script> |
| |
| <div id='notAScroller' class='scroller' style='overflow: visible;'> |
| <div class='content'></div> |
| </div> |
| <script> |
| test(function() { |
| const scroller = document.querySelector('#notAScroller'); |
| const scrollTimeline = new ScrollTimeline( |
| { scrollSource: scroller, timeRange: 100, orientation: 'block' }); |
| |
| assert_equals(scrollTimeline.currentTime, null); |
| }, 'currentTime should be null when the scrollSource is not a scroller'); |
| </script> |
