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<!DOCTYPE html>
<html>
<head>
<title>Test attributeChanged callback is called if custom element attribute value is changed</title>
<meta name="author" title="Sergey G. Grekhov" href="mailto:sgrekhov@unipro.ru">
<meta name="author" title="Aleksei Yu. Semenov" href="mailto:a.semenov@unipro.ru">
<meta name="assert" content="attributeChanged callback must be enqueued whenever custom element's attribute is added, changed or removed">
<link rel="help" href="http://www.w3.org/TR/custom-elements/#types-of-callbacks">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../testcommon.js"></script>
</head>
<body>
<div id="log"></div>
<script>
test(function() {
var doc = newHTMLDocument();
var proto = newHTMLElementPrototype();
var GeneratedConstructor = doc.registerElement('x-a', {prototype: proto});
var customElement = new GeneratedConstructor();
customElement.setAttribute('class', 'someClass');
proto.attributeChangedCallbackCalledCounter = 0;
customElement.setAttribute('class', 'someClass2');
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
}, 'Test attributeChanged callback is called if attribute value is changed by method ' +
'setAttribute(). The custom element is created via constructor');
test(function() {
var doc = newHTMLDocument();
var proto = newHTMLElementPrototype();
doc.registerElement('x-b', {prototype: proto});
doc.body.innerHTML = '<x-b id="x-b" class="oldValue"></x-b>';
var customElement = doc.querySelector('#x-b');
customElement.setAttribute('class', 'newValue');
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'oldValue', 'newValue'],
'Unexpected callback attributeChanged arguments');
}, 'Test attributeChanged callback arguments if attribute value is changed by method ' +
'setAttribute(). The custom element is created via innerHTML property');
test(function() {
var doc = newHTMLDocument();
var proto = newHTMLElementPrototype();
var GeneratedConstructor = doc.registerElement('x-c', {prototype: proto});
var customElement = new GeneratedConstructor();
customElement.setAttribute('class', 'someClass');
proto.attributeChangedCallbackCalledCounter = 0;
customElement.classList.add('someClass3');
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
}, 'Test attributeChanged callback is called if attribute value is changed by method ' +
'classList.add(). The custom element is created via constructor');
test(function() {
var doc = newHTMLDocument();
var proto = newHTMLElementPrototype();
doc.registerElement('x-d', {prototype: proto});
doc.body.innerHTML = '<x-d id="x-d" class="oldValue"></x-d>';
var customElement = doc.querySelector('#x-d');
customElement.classList.add('newestValue');
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'oldValue', 'oldValue newestValue'],
'Unexpected callback attributeChanged arguments');
}, 'Test attributeChanged callback arguments if attribute value is changed by method ' +
'classList.add(). The custom element is created via innerHTML property');
test(function() {
var doc = newHTMLDocument();
var proto = newHTMLElementPrototype();
var GeneratedConstructor = doc.registerElement('x-e', {prototype: proto});
var customElement = new GeneratedConstructor();
customElement.setAttribute('class', 'someClass');
proto.attributeChangedCallbackCalledCounter = 0;
customElement.id = 'someId';
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
}, 'Test attributeChanged callback is called if attribute value is changed as property. ' +
'The custom element is created via constructor');
test(function() {
var doc = newHTMLDocument();
var proto = newHTMLElementPrototype();
doc.registerElement('x-f', {prototype: proto});
doc.body.innerHTML = '<x-f id="x-f" class="oldValue"></x-f>';
var customElement = doc.querySelector('#x-f');
customElement.className = 'lastValue';
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'oldValue', 'lastValue'],
'Unexpected callback attributeChanged arguments');
}, 'Test attributeChanged callback arguments if attribute value is changed as property. ' +
'The custom element is created via innerHTML property');
test(function() {
var doc = newHTMLDocument();
var proto = newHTMLElementPrototype();
var GeneratedConstructor = doc.registerElement('x-g', {prototype: proto});
var customElement = new GeneratedConstructor();
customElement.setAttribute('class', 'someClass someSuperClass');
proto.attributeChangedCallbackCalledCounter = 0;
customElement.classList.toggle('someClass');
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
}, 'Test attributeChanged callback is called if attribute value is changed by classList.toggle(). ' +
'The custom element is created via constructor');
test(function() {
var doc = newHTMLDocument();
var proto = newHTMLElementPrototype();
doc.registerElement('x-h', {prototype: proto});
doc.body.innerHTML = '<x-h id="x-h" class="oldValue lastValue"></x-h>';
var customElement = doc.querySelector('#x-h');
customElement.classList.toggle('lastValue');
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'oldValue lastValue', 'oldValue'],
'Unexpected callback attributeChanged arguments');
}, 'Test attributeChanged callback arguments if attribute value is changed by classList.toggle(). ' +
'The custom element is created via innerHTML property');
test(function() {
var doc = newHTMLDocument();
doc.body.innerHTML = '<x-i id="x-i" class="oldValue"></x-i>';
var customElement = doc.querySelector('#x-i');
customElement.setAttribute('class', 'newValue');
customElement.setAttribute('class', 'newestValue');
var proto = newHTMLElementPrototype();
doc.registerElement('x-i', {prototype: proto});
assert_equals(proto.attributeChangedCallbackCalledCounter, 0,
'Callback attributeChanged should not be called');
customElement.setAttribute('class', 'rightValue');
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should not be called');
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'newestValue', 'rightValue'],
'Unexpected callback attributeChanged arguments');
}, 'Test attributeChanged callback is not called if custom element is not registered');
testInIFrame('../../resources/x-element.html', function(doc) {
var proto = newHTMLElementPrototype();
doc.registerElement('x-element', {prototype: proto});
var customElement = doc.querySelector('#x-element');
customElement.setAttribute('class', 'firstValue');
customElement.setAttribute('class', 'secondValue');
assert_equals(proto.attributeChangedCallbackCalledCounter, 2, 'Callback ' +
'attributeChanged should be called after call to setAttribute()');
customElement.classList.add('someClass3');
assert_equals(proto.attributeChangedCallbackCalledCounter, 3, 'Callback ' +
'attributeChanged should be called after call to classList.add()');
customElement.id = 'someId';
assert_equals(proto.attributeChangedCallbackCalledCounter, 4, 'Callback ' +
'attributeChanged should be called after changing attribute as property');
}, 'Test attributeChanged callback is called if attribute value is changed. ' +
'The document has browsing context');
testInIFrame('../../resources/x-element.html', function(doc) {
var proto = newHTMLElementPrototype();
doc.registerElement('x-element', {prototype: proto});
var customElement = doc.querySelector('#x-element');
customElement.setAttribute('class', 'firstValue');
customElement.setAttribute('class', 'secondValue');
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'firstValue', 'secondValue'],
'Unexpected callback attributeChanged arguments after call to setAttribute()');
customElement.classList.add('newestValue');
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'secondValue', 'secondValue newestValue'],
'Unexpected callback attributeChanged arguments after call to classList.add()');
customElement.className = 'lastValue';
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'secondValue newestValue', 'lastValue'],
'Unexpected callback attributeChanged arguments after changing attribute as property');
}, 'Test attributeChanged callback arguments if attribute value is changed. ' +
'The document has browsing context');
testInIFrame('../../resources/x-element.html', function(doc) {
var customElement = doc.querySelector('#x-element');
customElement.setAttribute('class', 'firstValue');
customElement.setAttribute('class', 'secondValue');
var proto = newHTMLElementPrototype();
doc.registerElement('x-element', {prototype: proto});
customElement.setAttribute('class', 'thirdValue');
assert_equals(proto.attributeChangedCallbackCalledCounter, 1,
'Callback attributeChanged should be called');
assert_array_equals(proto.attributeChangedCallbackArgs,
['class', 'secondValue', 'thirdValue'],
'Unexpected callback attributeChanged arguments after setAttribute() call');
}, 'Test attributeChanged callback is not called if custom element is not registered. ' +
'The document has browsing context');
</script>
</body>
</html>
|
