pointerevent_touch-action-modified_touch.html (1812B)
1 <!doctype html> 2 <title>Deleting touch-action:none after pointerdown has no effect</title> 3 <link rel="help" href="https://w3c.github.io/pointerevents/#determining-supported-direct-manipulation-behavior" /> 4 <meta name="viewport" content="width=device-width"> 5 <link rel="stylesheet" type="text/css" href="pointerevent_styles.css"> 6 <script src="/resources/testharness.js"></script> 7 <script src="/resources/testharnessreport.js"></script> 8 <script src="/resources/testdriver.js"></script> 9 <script src="/resources/testdriver-actions.js"></script> 10 <script src="/resources/testdriver-vendor.js"></script> 11 <script src="pointerevent_support.js"></script> 12 <style> 13 #target { 14 width: 100px; 15 height: 150vh; 16 background-color: lightgreen; 17 user-select: none; 18 } 19 .touchActionNone { 20 touch-action: none; 21 } 22 </style> 23 <body> 24 <h1>Deleting touch-action:none after pointerdown has no effect</h1> 25 <div id="target" class="touchActionNone" draggable="false"> 26 An unscrollable element that becomes scrollable at pointerdown. 27 </div> 28 </body> 29 <script> 30 "use strict"; 31 let target = document.getElementById("target"); 32 let pointercancel_received = false; 33 34 document.body.addEventListener("pointerdown", 35 () => target.classList.remove("touchActionNone")); 36 document.body.addEventListener("pointercancel", 37 () => pointercancel_received = true); 38 39 promise_test(async () => { 40 let pointerup_event = getEvent("pointerup", document.body); 41 42 await touchScrollInTarget(target, "down"); 43 await pointerup_event; 44 45 // Sanity-check: the class has been removed. 46 assert_false(target.classList.contains("touchActionNone")); 47 assert_false(pointercancel_received, 48 "a pointercancel event is unexpected"); 49 }, "No scrolling after deleting touch-action:none after pointerdown"); 50 </script>