Event-dispatch-handlers-changed.html (2824B)
1 <!DOCTYPE html> 2 <meta charset=utf-8> 3 <title> Dispatch additional events inside an event listener </title> 4 <link rel="help" href="https://dom.spec.whatwg.org/#concept-event-dispatch"> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <div id=log></div> 8 9 <table id="table" border="1" style="display: none"> 10 <tbody id="table-body"> 11 <tr id="table-row"> 12 <td id="table-cell">Shady Grove</td> 13 <td>Aeolian</td> 14 </tr> 15 <tr id="parent"> 16 <td id="target">Over the river, Charlie</td> 17 <td>Dorian</td> 18 </tr> 19 </tbody> 20 </table> 21 22 <script> 23 test(function() { 24 var event_type = "bar"; 25 var target = document.getElementById("target"); 26 var parent = document.getElementById("parent"); 27 var tbody = document.getElementById("table-body"); 28 var table = document.getElementById("table"); 29 var body = document.body; 30 var html = document.documentElement; 31 var targets = [window, document, html, body, table, tbody, parent, target]; 32 var expected_targets = [ 33 window, 34 document, 35 html, 36 body, 37 table, 38 tbody, 39 parent, 40 target, 41 target, 42 target, // The additional listener for target runs as we copy its listeners twice 43 parent, 44 tbody, 45 table, 46 body, 47 html, 48 document, 49 window 50 ]; 51 var expected_listeners = [0,0,0,0,0,0,0,0,1,3,1,1,1,1,1,1,1]; 52 53 var actual_targets = [], actual_listeners = []; 54 var test_event_function = function(i) { 55 return this.step_func(function(evt) { 56 actual_targets.push(evt.currentTarget); 57 actual_listeners.push(i); 58 59 if (evt.eventPhase != evt.BUBBLING_PHASE && evt.currentTarget.foo != 1) { 60 evt.currentTarget.removeEventListener(event_type, event_handlers[0], true); 61 evt.currentTarget.addEventListener(event_type, event_handlers[2], true); 62 evt.currentTarget.foo = 1; 63 } 64 65 if (evt.eventPhase != evt.CAPTURING_PHASE && evt.currentTarget.foo != 3) { 66 evt.currentTarget.removeEventListener(event_type, event_handlers[0], false); 67 evt.currentTarget.addEventListener(event_type, event_handlers[3], false); 68 evt.currentTarget.foo = 3; 69 } 70 }); 71 }.bind(this); 72 var event_handlers = [ 73 test_event_function(0), 74 test_event_function(1), 75 test_event_function(2), 76 test_event_function(3), 77 ]; 78 79 for (var i = 0; i < targets.length; ++i) { 80 targets[i].addEventListener(event_type, event_handlers[0], true); 81 targets[i].addEventListener(event_type, event_handlers[1], false); 82 } 83 84 var evt = document.createEvent("Event"); 85 evt.initEvent(event_type, true, true); 86 target.dispatchEvent(evt); 87 88 assert_array_equals(actual_targets, expected_targets, "actual_targets"); 89 assert_array_equals(actual_listeners, expected_listeners, "actual_listeners"); 90 }); 91 </script>