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| (Empty) | |
| 1 <!DOCTYPE HTML> |
| 2 <body/> |
| 3 <script src="../../../resources/testharness.js"></script> |
| 4 <script src="../../../resources/testharnessreport.js"></script> |
| 5 |
| 6 <!-- This test is run with normal layout tests with passiveEventListeners |
| 7 enabled and in virtual/stable with passiveEventListeners disabled --> |
| 8 <script> |
| 9 |
| 10 function testTwoArgumentRegister() { |
| 11 var handler = function handler(e) { |
| 12 e.preventDefault(); |
| 13 } |
| 14 document.addEventListener('test', handler); |
| 15 assert_equals(false, document.body.dispatchEvent(new Event('test', {'bubbles':
true, 'cancelable': true}))); |
| 16 document.removeEventListener('test', handler); |
| 17 assert_equals(true, document.body.dispatchEvent(new Event('test', {'bubbles':
true, 'cancelable': true}))); |
| 18 } |
| 19 |
| 20 function testPassiveValue(registerValue, expectedValue, test) { |
| 21 var handler = function handler(e) { |
| 22 e.preventDefault(); |
| 23 } |
| 24 document.addEventListener('test', handler, registerValue); |
| 25 var event = new Event('test', {'bubbles': true, 'cancelable': true}); |
| 26 assert_equals(expectedValue, document.body.dispatchEvent(event)); |
| 27 assert_equals(!expectedValue, event.defaultPrevented); |
| 28 document.removeEventListener('test', handler, registerValue); |
| 29 assert_equals(true, document.body.dispatchEvent(new Event('test', {'bubbles':
true, 'cancelable': true}))); |
| 30 test.done(); |
| 31 } |
| 32 |
| 33 function testTwoHandlers() { |
| 34 if (!internals.runtimeFlags.passiveEventListenersEnabled) |
| 35 return; |
| 36 |
| 37 var passive_called = undefined; |
| 38 var blocking_called = undefined; |
| 39 var passive_handler = function handler(e) { |
| 40 passive_called = true; |
| 41 } |
| 42 var blocking_handler = function handler(e) { |
| 43 blocking_called = true; |
| 44 e.preventDefault(); |
| 45 } |
| 46 document.addEventListener('test', passive_handler, {"passive" : true}); |
| 47 document.addEventListener('test', blocking_handler, {"passive" : false}); |
| 48 var event = new Event('test', {'bubbles': true, 'cancelable': true}); |
| 49 document.body.dispatchEvent(event); |
| 50 assert_true(passive_called); |
| 51 assert_true(blocking_called); |
| 52 assert_true(event.defaultPrevented); |
| 53 document.removeEventListener('test', passive_handler, {"passive" : true}); |
| 54 document.removeEventListener('test', blocking_handler, {"passive" : false}); |
| 55 } |
| 56 |
| 57 test(testTwoArgumentRegister, "Two argument register"); |
| 58 test(function(t) { testPassiveValue(false, false, t); }, "Prevent default captur
e false"); |
| 59 test(function(t) { testPassiveValue(true, false, t); }, "Prevent default capture
true"); |
| 60 test(function(t) { testPassiveValue({}, false, t); }, "Prevent default with empt
y object"); |
| 61 test(function(t) { testPassiveValue({passive: false}, false, t); }, "Prevent def
ault with passive false"); |
| 62 test(function(t) { testPassiveValue({passive: true}, internals.runtimeFlags.pass
iveEventListenersEnabled ? true : false, t); }, "Prevent default with passive tr
ue "); |
| 63 test(testTwoHandlers, "Passive and Blocking Registered Handlers"); |
| 64 |
| 65 </script> |
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Chromium Code Reviews
Issue 1563623002:
Support registering and dispatching passive event listeners. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master