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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <script src="../../resources/testharness.js"></script> |
| 5 <script src="../../resources/testharnessreport.js"></script> |
| 6 <script src="resources/scroll-interruption-test.js"></script> |
| 7 <script type="text/javascript"> |
| 8 const numItems = 500; |
| 9 |
| 10 function jsScroll(y) { |
| 11 document.getElementById('listbox').scrollTop = {y: y, behavior: 'smooth'}; |
| 12 } |
| 13 |
| 14 function initializeContents(listbox) { |
| 15 for (var i = 0; i < numItems; i++) { |
| 16 var option = document.createElement('option'); |
| 17 option.appendChild(document.createTextNode(i)); |
| 18 listbox.appendChild(option); |
| 19 } |
| 20 } |
| 21 |
| 22 function initializeTest(indexTargets, targets, innerPoint, listbox) { |
| 23 var itemHeight = (listbox.scrollHeight - listbox.clientHeight) / (numItems
- listbox.size); |
| 24 |
| 25 // Convert from listbox item index to scroll offset. |
| 26 targets.y_min = indexTargets.index_min * itemHeight; |
| 27 targets.y_mid = indexTargets.index_mid * itemHeight; |
| 28 targets.y_max = indexTargets.index_max * itemHeight; |
| 29 |
| 30 var boundingRect = listbox.getBoundingClientRect(); |
| 31 innerPoint.x = (boundingRect.left + boundingRect.right)/2; |
| 32 innerPoint.y = (boundingRect.top + boundingRect.bottom)/2; |
| 33 } |
| 34 |
| 35 function doTest() { |
| 36 var indexTargets = {index_min: 3, index_mid: 200, index_max: 400}; |
| 37 var targets = {}; |
| 38 var innerPoint = {}; |
| 39 var element = document.getElementById('listbox'); |
| 40 initializeContents(element); |
| 41 initializeTest(indexTargets, targets, innerPoint, element); |
| 42 var scrollInterruptionTest = new SmoothScrollInterruptionTest(element, |
| 43 innerPoint, |
| 44 targets, |
| 45 jsScroll); |
| 46 scrollInterruptionTest.run(); |
| 47 } |
| 48 |
| 49 window.addEventListener('load', doTest, false); |
| 50 </script> |
| 51 </head> |
| 52 |
| 53 <body> |
| 54 <p>Test that interrupting a smooth scroll on a listbox works with both scroll
behaviors and with input</p> |
| 55 <select size="4" id="listbox"></select> |
| 56 </body> |
| 57 </html> |
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Chromium Code Reviews
Issue 134443003:
Implement CSSOM Smooth Scroll API (Closed)
Base URL: svn://svn.chromium.org/blink/trunk