third_party/WebKit/PerformanceTests/DOM/click_webkit_user_select_none.html

   1 <!DOCTYPE html>
   2 <script src="../resources/runner.js"></script>
   3 <div id="container" style="-webkit-user-select:none;"></div>
   4 <textarea id="text"></textarea>
   5 <script>
   6 const NUMBER_OF_NODES = 10000;
   7
   8 var shadowRoot = container.createShadowRoot();
   9 for (var i = 0; i < NUMBER_OF_NODES; i++) {
  10     var child = document.createElement("div");
  11     shadowRoot.appendChild(child);
  12 }
  13 var middle = shadowRoot.childNodes[NUMBER_OF_NODES / 2];
  14 middle.textContent = "textToClick";
  15
  16 function clickNode(node) {
  17     eventSender.mouseMoveTo(node.offsetLeft + 5, node.offsetTop+5);
  18     eventSender.mouseDown();
  19     eventSender.mouseUp();
  20 }
  21 clickNode(text);
  22
  23 PerfTestRunner.measureTime({
  24     description: `Measures performance of clicking a -webkit-user-select:none DOM node which contains ${NUMBER_OF_NODES} children.`,
  25     run: function () {
  26         clickNode(text);
  27         clickNode(middle);
  28     }
  29 });
  30 </script>