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<!DOCTYPE html>
<html>
<head>
<title>Custom Elements: Upgrading</title>
<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
<meta name="assert" content="Node.prototype.cloneNode should upgrade a custom element">
<link rel="help" href="https://html.spec.whatwg.org/#upgrades">
<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>
setup({allow_uncaught_exception:true});
test(function () {
class MyCustomElement extends HTMLElement {}
customElements.define('my-custom-element', MyCustomElement);
var instance = document.createElement('my-custom-element');
assert_true(instance instanceof HTMLElement);
assert_true(instance instanceof MyCustomElement);
var clone = instance.cloneNode(false);
assert_not_equals(instance, clone);
assert_true(clone instanceof HTMLElement,
'A cloned custom element must be an instance of HTMLElement');
assert_true(clone instanceof MyCustomElement,
'A cloned custom element must be an instance of the custom element');
}, 'Node.prototype.cloneNode(false) must be able to clone a custom element');
test(function () {
class AutonomousCustomElement extends HTMLElement {};
class IsCustomElement extends HTMLElement {};
customElements.define('autonomous-custom-element', AutonomousCustomElement);
customElements.define('is-custom-element', IsCustomElement);
var instance = document.createElement('autonomous-custom-element', { is: "is-custom-element"});
assert_true(instance instanceof HTMLElement);
assert_true(instance instanceof AutonomousCustomElement);
var clone = instance.cloneNode(false);
assert_not_equals(instance, clone);
assert_true(clone instanceof HTMLElement,
'A cloned custom element must be an instance of HTMLElement');
assert_true(clone instanceof AutonomousCustomElement,
'A cloned custom element must be an instance of the custom element');
}, 'Node.prototype.cloneNode(false) must be able to clone as a autonomous custom element when it contains is attribute');
test_with_window(function (contentWindow) {
var contentDocument = contentWindow.document;
class MyCustomElement extends contentWindow.HTMLElement {}
contentWindow.customElements.define('my-custom-element', MyCustomElement);
var instance = contentDocument.createElement('my-custom-element');
assert_true(instance instanceof contentWindow.HTMLElement);
assert_true(instance instanceof MyCustomElement);
var clone = instance.cloneNode(false);
assert_not_equals(instance, clone);
assert_true(clone instanceof contentWindow.HTMLElement,
'A cloned custom element must be an instance of HTMLElement');
assert_true(clone instanceof MyCustomElement,
'A cloned custom element must be an instance of the custom element');
}, 'Node.prototype.cloneNode(false) must be able to clone a custom element inside an iframe');
test_with_window(function (contentWindow) {
var contentDocument = contentWindow.document;
class MyCustomElement extends contentWindow.HTMLElement { }
contentWindow.customElements.define('my-custom-element', MyCustomElement);
var instance = contentDocument.createElement('my-custom-element');
var container = contentDocument.createElement('div');
container.appendChild(instance);
var containerClone = container.cloneNode(true);
assert_true(containerClone instanceof contentWindow.HTMLDivElement);
var clone = containerClone.firstChild;
assert_not_equals(instance, clone);
assert_true(clone instanceof contentWindow.HTMLElement,
'A cloned custom element must be an instance of HTMLElement');
assert_true(clone instanceof MyCustomElement,
'A cloned custom element must be an instance of the custom element');
}, 'Node.prototype.cloneNode(true) must be able to clone a descendent custom element');
test_with_window(function (contentWindow) {
var parentNodeInConstructor;
var previousSiblingInConstructor;
var nextSiblingInConstructor;
class MyCustomElement extends contentWindow.HTMLElement {
constructor() {
super();
parentNodeInConstructor = this.parentNode;
previousSiblingInConstructor = this.previousSibling;
nextSiblingInConstructor = this.nextSibling;
}
}
contentWindow.customElements.define('my-custom-element', MyCustomElement);
var contentDocument = contentWindow.document;
var instance = contentDocument.createElement('my-custom-element');
var siblingBeforeInstance = contentDocument.createElement('b');
var siblingAfterInstance = contentDocument.createElement('a');
var container = contentDocument.createElement('div');
container.appendChild(siblingBeforeInstance);
container.appendChild(instance);
container.appendChild(siblingAfterInstance);
var containerClone = container.cloneNode(true);
assert_equals(parentNodeInConstructor, containerClone,
'An upgraded element must have its parentNode set before the custom element constructor is called');
assert_equals(previousSiblingInConstructor, containerClone.firstChild,
'An upgraded element must have its previousSibling set before the custom element constructor is called');
assert_equals(nextSiblingInConstructor, containerClone.lastChild,
'An upgraded element must have its nextSibling set before the custom element constructor is called');
}, 'Node.prototype.cloneNode(true) must set parentNode, previousSibling, and nextSibling before upgrading custom elements');
// The error reporting isn't clear yet when multiple globals involved in custom
// element, see w3c/webcomponents#635, so using test_with_window is not a good
// idea here.
test(function () {
class MyCustomElement extends HTMLElement {
constructor(doNotCreateItself) {
super();
if (!doNotCreateItself)
new MyCustomElement(true);
}
}
customElements.define('my-custom-element-constructed-after-super', MyCustomElement);
var instance = new MyCustomElement(false);
var uncaughtError;
window.onerror = function (message, url, lineNumber, columnNumber, error) { uncaughtError = error; return true; }
instance.cloneNode(false);
assert_equals(uncaughtError.name, 'TypeError');
}, 'HTMLElement constructor must throw an TypeError when the top of the construction stack is marked AlreadyConstructed'
+ ' due to a custom element constructor constructing itself after super() call');
test(function () {
class MyCustomElement extends HTMLElement {
constructor(doNotCreateItself) {
if (!doNotCreateItself)
new MyCustomElement(true);
super();
}
}
customElements.define('my-custom-element-constructed-before-super', MyCustomElement);
var instance = new MyCustomElement(false);
var uncaughtError;
window.onerror = function (message, url, lineNumber, columnNumber, error) { uncaughtError = error; return true; }
instance.cloneNode(false);
assert_equals(uncaughtError.name, 'TypeError');
}, 'HTMLElement constructor must throw an TypeError when the top of the construction stack is marked AlreadyConstructed'
+ ' due to a custom element constructor constructing itself before super() call');
test(function () {
var returnSpan = false;
class MyCustomElement extends HTMLElement {
constructor() {
super();
if (returnSpan)
return document.createElement('span');
}
}
customElements.define('my-custom-element-return-another', MyCustomElement);
var instance = new MyCustomElement(false);
returnSpan = true;
var uncaughtError;
window.onerror = function (message, url, lineNumber, columnNumber, error) { uncaughtError = error; return true; }
instance.cloneNode(false);
assert_equals(uncaughtError.name, 'TypeError');
}, 'Upgrading a custom element must throw TypeError when the custom element\'s constructor returns another element');
test(function () {
var instance = document.createElement('my-custom-element-throw-exception');
document.body.appendChild(instance);
var calls = [];
class MyCustomElement extends HTMLElement {
constructor() {
super();
calls.push(this);
throw 'bad';
}
}
var uncaughtError;
window.onerror = function (message, url, lineNumber, columnNumber, error) { uncaughtError = error; return true; }
customElements.define('my-custom-element-throw-exception', MyCustomElement);
assert_equals(uncaughtError, 'bad');
assert_array_equals(calls, [instance]);
document.body.removeChild(instance);
document.body.appendChild(instance);
assert_array_equals(calls, [instance]);
}, 'Inserting an element must not try to upgrade a custom element when it had already failed to upgrade once');
</script>
</body>
</html>
|
