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| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <meta charset="utf-8"> |
| 5 <title>Event.cancelBubble</title> |
| 6 <link rel="author" title="Chris Rebert" href="http://chrisrebert.com"> |
| 7 <link rel="help" href="https://dom.spec.whatwg.org/#dom-event-cancelbubble"> |
| 8 <meta name="flags" content="dom"> |
| 9 <script src="/resources/testharness.js"></script> |
| 10 <script src="/resources/testharnessreport.js"></script> |
| 11 </head> |
| 12 <body> |
| 13 <div id="outer"> |
| 14 <div id="middle"> |
| 15 <div id="inner"></div> |
| 16 </div> |
| 17 </div> |
| 18 <script> |
| 19 test(function () { |
| 20 // See https://dom.spec.whatwg.org/#stop-propagation-flag |
| 21 var e = document.createEvent('Event'); |
| 22 assert_false(e.cancelBubble, "cancelBubble must be false after event creation.
"); |
| 23 }, "cancelBubble must be false when an event is initially created."); |
| 24 |
| 25 test(function () { |
| 26 // See https://dom.spec.whatwg.org/#concept-event-initialize |
| 27 |
| 28 // Event which bubbles. |
| 29 var one = document.createEvent('Event'); |
| 30 one.cancelBubble = true; |
| 31 one.initEvent('foo', true/*bubbles*/, false/*cancelable*/); |
| 32 assert_false(one.cancelBubble, "initEvent() must set cancelBubble to false. [b
ubbles=true]"); |
| 33 // Re-initialization. |
| 34 one.cancelBubble = true; |
| 35 one.initEvent('foo', true/*bubbles*/, false/*cancelable*/); |
| 36 assert_false(one.cancelBubble, "2nd initEvent() call must set cancelBubble to
false. [bubbles=true]"); |
| 37 |
| 38 // Event which doesn't bubble. |
| 39 var two = document.createEvent('Event'); |
| 40 two.cancelBubble = true; |
| 41 two.initEvent('foo', false/*bubbles*/, false/*cancelable*/); |
| 42 assert_false(two.cancelBubble, "initEvent() must set cancelBubble to false. [b
ubbles=false]"); |
| 43 // Re-initialization. |
| 44 two.cancelBubble = true; |
| 45 two.initEvent('foo', false/*bubbles*/, false/*cancelable*/); |
| 46 assert_false(two.cancelBubble, "2nd initEvent() call must set cancelBubble to
false. [bubbles=false]"); |
| 47 }, "Initializing an event must set cancelBubble to false."); |
| 48 |
| 49 test(function () { |
| 50 // See https://dom.spec.whatwg.org/#dom-event-stoppropagation |
| 51 var e = document.createEvent('Event'); |
| 52 e.stopPropagation(); |
| 53 assert_true(e.cancelBubble, "stopPropagation() must set cancelBubble to true."
); |
| 54 }, "stopPropagation() must set cancelBubble to true."); |
| 55 |
| 56 test(function () { |
| 57 // See https://dom.spec.whatwg.org/#dom-event-stopimmediatepropagation |
| 58 var e = document.createEvent('Event'); |
| 59 e.stopImmediatePropagation(); |
| 60 assert_true(e.cancelBubble, "stopImmediatePropagation() must set cancelBubble
to true."); |
| 61 }, "stopImmediatePropagation() must set cancelBubble to true."); |
| 62 |
| 63 test(function () { |
| 64 var one = document.createEvent('Event'); |
| 65 one.stopPropagation(); |
| 66 one.cancelBubble = false; |
| 67 assert_true(one.cancelBubble, "cancelBubble must still be true after attemptin
g to set it to false."); |
| 68 }, "Event.cancelBubble=false must have no effect."); |
| 69 |
| 70 test(function (t) { |
| 71 var outer = document.getElementById('outer'); |
| 72 var middle = document.getElementById('middle'); |
| 73 var inner = document.getElementById('inner'); |
| 74 |
| 75 outer.addEventListener('barbaz', t.step_func(function () { |
| 76 assert_unreached("Setting Event.cancelBubble=false after setting Event.cance
lBubble=true should have no effect."); |
| 77 }), false/*useCapture*/); |
| 78 |
| 79 middle.addEventListener('barbaz', function (e) { |
| 80 e.cancelBubble = true;// Stop propagation. |
| 81 e.cancelBubble = false;// Should be a no-op. |
| 82 }, false/*useCapture*/); |
| 83 |
| 84 var barbazEvent = document.createEvent('Event'); |
| 85 barbazEvent.initEvent('barbaz', true/*bubbles*/, false/*cancelable*/); |
| 86 inner.dispatchEvent(barbazEvent); |
| 87 }, "Event.cancelBubble=false must have no effect during event propagation."); |
| 88 |
| 89 test(function () { |
| 90 // See https://dom.spec.whatwg.org/#concept-event-dispatch |
| 91 // "14. Unset event’s [...] stop propagation flag," |
| 92 var e = document.createEvent('Event'); |
| 93 e.initEvent('foobar', true/*bubbles*/, true/*cancelable*/); |
| 94 document.body.addEventListener('foobar', function listener(e) { |
| 95 e.stopPropagation(); |
| 96 }); |
| 97 document.body.dispatchEvent(e); |
| 98 assert_false(e.cancelBubble, "cancelBubble must be false after an event has be
en dispatched."); |
| 99 }, "cancelBubble must be false after an event has been dispatched."); |
| 100 |
| 101 test(function (t) { |
| 102 var outer = document.getElementById('outer'); |
| 103 var middle = document.getElementById('middle'); |
| 104 var inner = document.getElementById('inner'); |
| 105 |
| 106 var propagationStopper = function (e) { |
| 107 e.cancelBubble = true; |
| 108 }; |
| 109 |
| 110 // Bubble phase |
| 111 middle.addEventListener('bar', propagationStopper, false/*useCapture*/); |
| 112 outer.addEventListener('bar', t.step_func(function listenerOne() { |
| 113 assert_unreached("Setting cancelBubble=true should stop the event from bubbl
ing further."); |
| 114 }), false/*useCapture*/); |
| 115 |
| 116 var barEvent = document.createEvent('Event'); |
| 117 barEvent.initEvent('bar', true/*bubbles*/, false/*cancelable*/); |
| 118 inner.dispatchEvent(barEvent); |
| 119 |
| 120 // Capture phase |
| 121 outer.addEventListener('qux', propagationStopper, true/*useCapture*/); |
| 122 middle.addEventListener('qux', t.step_func(function listenerTwo() { |
| 123 assert_unreached("Setting cancelBubble=true should stop the event from propa
gating further, including during the Capture Phase."); |
| 124 }), true/*useCapture*/); |
| 125 |
| 126 var quxEvent = document.createEvent('Event'); |
| 127 quxEvent.initEvent('qux', false/*bubbles*/, false/*cancelable*/); |
| 128 inner.dispatchEvent(quxEvent); |
| 129 }, "Event.cancelBubble=true must set the stop propagation flag."); |
| 130 </script> |
| 131 </body> |
| 132 </html> |
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Chromium Code Reviews
Issue 2588723002:
Import wpt@e1e2bfbe1d34de9826a036a0e9d43ba20190c69c (Closed)
