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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1087460
-->
<head>
<title>Test for custom element callbacks in shadow DOM.</title>
<script type="text/javascript" src="head.js"></script>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1087460">Bug 1087460</a>
<script>
SimpleTest.waitForExplicitFinish();
var content = '<div id="container"></div>';
createIframe(content)
.then((aDocument) => {
// Test callback for custom element when used after registration.
var iframeWin = aDocument.defaultView;
var connectedCallbackCount = 0;
var disconnectedCallbackCount = 0;
var attributeChangedCallbackCount = 0;
class Foo extends iframeWin.HTMLElement
{
connectedCallback() {
connectedCallbackCount++;
}
disconnectedCallback() {
disconnectedCallbackCount++;
}
attributeChangedCallback(aName, aOldValue, aNewValue) {
attributeChangedCallbackCount++;
}
static get observedAttributes() {
return ["data-foo"];
}
}
iframeWin.customElements.define("x-foo", Foo);
var container = aDocument.getElementById("container");
var shadow = container.attachShadow({mode: "open"});
var customElem = aDocument.createElement("x-foo");
is(attributeChangedCallbackCount, 0, "attributeChangedCallback should not be called after just creating an element.");
customElem.setAttribute("data-foo", "bar");
is(attributeChangedCallbackCount, 1, "attributeChangedCallback should be called after setting an attribute.");
is(connectedCallbackCount, 0, "connectedCallback should not be called on an element that is not in a document/composed document.");
shadow.appendChild(customElem);
is(connectedCallbackCount, 1, "connectedCallback should be called after attaching custom element to the composed document.");
is(disconnectedCallbackCount, 0, "disconnectedCallback should not be called without detaching custom element.");
shadow.removeChild(customElem);
is(disconnectedCallbackCount, 1, "disconnectedCallback should be called after detaching custom element from the composed document.");
// Test callback for custom element already in the composed doc when created.
connectedCallbackCount = 0;
disconnectedCallbackCount = 0;
attributeChangedCallbackCount = 0;
shadow.innerHTML = "<x-foo></x-foo>";
is(connectedCallbackCount, 1, "connectedCallback should be called after creating an element in the composed document.");
shadow.innerHTML = "";
is(disconnectedCallbackCount, 1, "disconnectedCallback should be called after detaching custom element from the composed document.");
// Test callback for custom element in shadow DOM when host attached/detached to/from document.
connectedCallbackCount = 0;
disconnectedCallbackCount = 0;
attributeChangedCallbackCount = 0;
var host = aDocument.createElement("div");
shadow = host.attachShadow({mode: "open"});
customElem = aDocument.createElement("x-foo");
is(connectedCallbackCount, 0, "connectedCallback should not be called on newly created element.");
shadow.appendChild(customElem);
is(connectedCallbackCount, 0, "connectedCallback should not be called on attaching to a tree that is not in the composed document.");
is(disconnectedCallbackCount, 0, "disconnectedCallback should not be called.");
shadow.removeChild(customElem);
is(disconnectedCallbackCount, 0, "disconnectedCallback should not be called when detaching from a tree that is not in the composed document.");
shadow.appendChild(customElem);
is(connectedCallbackCount, 0, "connectedCallback should still not be called after reattaching to a shadow tree that is not in the composed document.");
container.appendChild(host);
is(connectedCallbackCount, 1, "connectedCallback should be called after host is inserted into document.");
container.removeChild(host);
is(disconnectedCallbackCount, 1, "disconnectedCallback should be called after host is removed from document.");
// Test callback for custom element for upgraded element.
connectedCallbackCount = 0;
disconnectedCallbackCount = 0;
attributeChangedCallbackCount = 0;
shadow = container.shadowRoot;
shadow.innerHTML = "<x-bar></x-bar>";
class Bar extends iframeWin.HTMLElement {
connectedCallback() {
connectedCallbackCount++;
}
};
iframeWin.customElements.define("x-bar", Bar);
is(connectedCallbackCount, 1, "connectedCallback should be called after upgrading element in composed document.");
SimpleTest.finish();
});
</script>
</body>
</html>
|
