| <!DOCTYPE HTML> |
| <meta charset="utf-8"> |
| <title>EventListenerOptions.capture</title> |
| <link rel="author" title="Rick Byers" href="mailto:rbyers@chromium.org"> |
| <link rel="help" href="https://dom.spec.whatwg.org/#dom-eventlisteneroptions-capture"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="log"></div> |
| |
| <script> |
| |
| function testCaptureValue(captureValue, expectedValue) { |
| var handlerPhase = undefined; |
| var handler = function handler(e) { |
| assert_equals(handlerPhase, undefined, "Handler invoked after remove"); |
| handlerPhase = e.eventPhase; |
| } |
| document.addEventListener('test', handler, captureValue); |
| document.body.dispatchEvent(new Event('test', {bubbles: true})); |
| document.removeEventListener('test', handler, captureValue); |
| document.body.dispatchEvent(new Event('test', {bubbles: true})); |
| assert_equals(handlerPhase, expectedValue, "Incorrect event phase for value: " + JSON.stringify(captureValue)); |
| } |
| |
| test(function() { |
| testCaptureValue(true, Event.CAPTURING_PHASE); |
| testCaptureValue(false, Event.BUBBLING_PHASE); |
| testCaptureValue(null, Event.BUBBLING_PHASE); |
| testCaptureValue(undefined, Event.BUBBLING_PHASE); |
| testCaptureValue(2.3, Event.CAPTURING_PHASE); |
| testCaptureValue(-1000.3, Event.CAPTURING_PHASE); |
| testCaptureValue(NaN, Event.BUBBLING_PHASE); |
| testCaptureValue(+0.0, Event.BUBBLING_PHASE); |
| testCaptureValue(-0.0, Event.BUBBLING_PHASE); |
| testCaptureValue("", Event.BUBBLING_PHASE); |
| testCaptureValue("AAAA", Event.CAPTURING_PHASE); |
| }, "Capture boolean should be honored correctly"); |
| |
| test(function() { |
| testCaptureValue({}, Event.BUBBLING_PHASE); |
| testCaptureValue({capture:true}, Event.CAPTURING_PHASE); |
| testCaptureValue({capture:false}, Event.BUBBLING_PHASE); |
| testCaptureValue({capture:2}, Event.CAPTURING_PHASE); |
| testCaptureValue({capture:0}, Event.BUBBLING_PHASE); |
| }, "Capture option should be honored correctly"); |
| |
| test(function() { |
| var supportsCapture = false; |
| var query_options = { |
| get capture() { |
| supportsCapture = true; |
| return false; |
| }, |
| get dummy() { |
| assert_unreached("dummy value getter invoked"); |
| return false; |
| } |
| }; |
| |
| document.addEventListener('test_event', null, query_options); |
| assert_true(supportsCapture, "addEventListener doesn't support the capture option"); |
| supportsCapture = false; |
| document.removeEventListener('test_event', null, query_options); |
| assert_true(supportsCapture, "removeEventListener doesn't support the capture option"); |
| }, "Supports capture option"); |
| |
| function testOptionEquality(addOptionValue, removeOptionValue, expectedEquality) { |
| var handlerInvoked = false; |
| var handler = function handler(e) { |
| assert_equals(handlerInvoked, false, "Handler invoked multiple times"); |
| handlerInvoked = true; |
| } |
| document.addEventListener('test', handler, addOptionValue); |
| document.removeEventListener('test', handler, removeOptionValue); |
| document.body.dispatchEvent(new Event('test', {bubbles: true})); |
| assert_equals(!handlerInvoked, expectedEquality, "equivalence of options " + |
| JSON.stringify(addOptionValue) + " and " + JSON.stringify(removeOptionValue)); |
| if (handlerInvoked) |
| document.removeEventListener('test', handler, addOptionValue); |
| } |
| |
| test(function() { |
| // Option values that should be treated as equivalent |
| testOptionEquality({}, false, true); |
| testOptionEquality({capture: false}, false, true); |
| testOptionEquality(true, {capture: true}, true); |
| testOptionEquality({capture: null}, undefined, true); |
| testOptionEquality({capture: true}, {dummy: false, capture: 1}, true); |
| testOptionEquality({dummy: true}, false, true); |
| |
| // Option values that should be treated as distinct |
| testOptionEquality(true, false, false); |
| testOptionEquality(true, {capture:false}, false); |
| testOptionEquality({}, true, false); |
| |
| }, "Equivalence of option values"); |
| |
| </script> |
