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parser-uses-registry-of-owner-document.html
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parser-uses-registry-of-owner-document.html
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<!DOCTYPE html>
<html>
<head>
<title>Custom Elements: HTML parser must use the owner document's custom element registry</title>
<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
<meta name="assert" content="HTML parser must use the owner document's custom element registry">
<link rel="help" href="https://html.spec.whatwg.org/#create-an-element-for-the-token">
<link rel="help" href="https://dom.spec.whatwg.org/#concept-create-element">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/custom-elements-helpers.js"></script>
</head>
<body>
<div id="log"></div>
<script>
class MyCustomElement extends HTMLElement { };
customElements.define('my-custom-element', MyCustomElement);
document.write('<template><my-custom-element></my-custom-element></template>');
test(function () {
var template = document.querySelector('template');
var instance = template.content.firstChild;
assert_true(instance instanceof HTMLElement,
'A custom element inside a template element must be an instance of HTMLElement');
assert_false(instance instanceof MyCustomElement,
'A custom element must not be instantiated inside a template element using the registry of the template element\'s owner document');
assert_equals(instance.ownerDocument, template.content.ownerDocument,
'Custom elements inside a template must use the appropriate template contents owner document as the owner document');
}, 'HTML parser must not instantiate custom elements inside template elements');
var iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.contentDocument.body.innerHTML = '<my-custom-element></my-custom-element>';
test(function () {
var instance = iframe.contentDocument.querySelector('my-custom-element');
assert_true(instance instanceof iframe.contentWindow.HTMLElement);
assert_false(instance instanceof MyCustomElement);
}, 'HTML parser must not use the registry of the owner element\'s document inside an iframe');
class ElementInIFrame extends iframe.contentWindow.HTMLElement { };
iframe.contentWindow.customElements.define('element-in-iframe', ElementInIFrame);
iframe.contentDocument.body.innerHTML = '<element-in-iframe></element-in-iframe>';
test(function () {
var instance = iframe.contentDocument.querySelector('element-in-iframe');
assert_true(instance instanceof iframe.contentWindow.HTMLElement, 'A custom element inside an iframe must be an instance of HTMLElement');
assert_true(instance instanceof ElementInIFrame,
'A custom element must be instantiated inside an iframe using the registry of the content document');
assert_equals(instance.ownerDocument, iframe.contentDocument,
'The owner document of custom elements inside an iframe must be the content document of the iframe');
}, 'HTML parser must use the registry of the content document inside an iframe');
document.write('<element-in-iframe></element-in-iframe>');
test(function () {
var instance = document.querySelector('element-in-iframe');
assert_true(instance instanceof HTMLElement);
assert_false(instance instanceof ElementInIFrame);
}, 'HTML parser must not instantiate a custom element defined inside an frame in frame element\'s owner document');
document.body.removeChild(iframe);
test(function () {
var windowlessDocument = (new DOMParser()).parseFromString('<my-custom-element></my-custom-element>', "text/html");
var instance = windowlessDocument.querySelector('my-custom-element');
assert_true(instance instanceof HTMLElement);
assert_false(instance instanceof MyCustomElement);
}, 'HTML parser must use the registry of window.document in a document created by DOMParser');
test(function () {
var windowlessDocument = document.implementation.createDocument ('http://www.w3.org/1999/xhtml', 'html', null);
windowlessDocument.documentElement.innerHTML = '<my-custom-element></my-custom-element>';
var instance = windowlessDocument.querySelector('my-custom-element');
assert_true(instance instanceof HTMLElement);
assert_false(instance instanceof MyCustomElement);
}, 'HTML parser must use the registry of window.document in a document created by document.implementation.createXHTMLDocument()');
test(function () {
var windowlessDocument = new Document;
windowlessDocument.appendChild(windowlessDocument.createElement('html'));
windowlessDocument.documentElement.innerHTML = '<my-custom-element></my-custom-element>';
var instance = windowlessDocument.querySelector('my-custom-element');
assert_true(instance instanceof Element);
assert_false(instance instanceof MyCustomElement);
}, 'HTML parser must use the registry of window.document in a document created by new Document');
promise_test(function () {
return new Promise(function (resolve, reject) {
var xhr = new XMLHttpRequest();
xhr.open('GET', '../resources/my-custom-element-html-document.html');
xhr.overrideMimeType('text/xml');
xhr.onload = function () { resolve(xhr.responseXML); }
xhr.onerror = function () { reject('Failed to fetch the document'); }
xhr.send();
}).then(function (doc) {
var instance = doc.querySelector('my-custom-element');
assert_true(instance instanceof Element);
assert_false(instance instanceof MyCustomElement);
doc.documentElement.innerHTML = '<my-custom-element></my-custom-element>';
var instance2 = doc.querySelector('my-custom-element');
assert_true(instance2 instanceof Element);
assert_false(instance2 instanceof MyCustomElement);
});
}, 'HTML parser must use the registry of window.document in a document created by XMLHttpRequest');
test_with_window(function (contentWindow, contentDocument) {
const element = define_custom_element_in_window(contentWindow, 'my-custom-element', []);
// document-open-steps spec doesn't do anything with the custom element
// registry, so it should just stick around.
contentDocument.write('<my-custom-element></my-custom-element>');
var instance = contentDocument.querySelector('my-custom-element');
assert_true(instance instanceof contentWindow.HTMLElement);
assert_true(instance instanceof element.class);
}, 'document.write() must not instantiate a custom element without a defined insertion point');
test_with_window(function (contentWindow, contentDocument) {
const element = define_custom_element_in_window(contentWindow, 'my-custom-element', []);
// document-open-steps spec doesn't do anything with the custom element
// registry, so it should just stick around.
contentDocument.writeln('<my-custom-element></my-custom-element>');
var instance = contentDocument.querySelector('my-custom-element');
assert_true(instance instanceof contentWindow.HTMLElement);
assert_true(instance instanceof element.class);
}, 'document.writeln() must not instantiate a custom element without a defined insertion point');
</script>
</body>
</html>