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Test Info:
- Manifest: dom/l10n/tests/mochitest/chrome.toml
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Test Web Component connecting into Document's l10n</title>
<script type="application/javascript">
SimpleTest.waitForExplicitFinish();
// In this test we are introducing two widgets. The only difference between them
// is that the first one is using `connectRoot` with the `aTranslate` argument set to `true`,
// and the other one to `false`.
//
// In this test, we will inject both of them lazily, after initial parsing is completed.
// For a test that verifies the behavior when they're injected during parsing, see
// `test_connectRoot_webcomponent.html` test.
//
// The expected difference is that when both get lazily injected into the DOM, the first one
// will get translated, while the other will not.
// The latter behavior will be used by widgets that will want to translate the initial DOM on their
// own before connecting the root.
let firstWidgetTranslated = false;
class FluentWidget extends HTMLElement {
constructor() {
super();
const shadowRoot = this.attachShadow({mode: "open"});
const t = document.querySelector("#fluent-widget-template");
const instance = t.content.cloneNode(true);
shadowRoot.appendChild(instance);
}
connectedCallback() {
MozXULElement.insertFTLIfNeeded("browser/preferences/preferences.ftl");
document.l10n.connectRoot(this.shadowRoot, true);
let label = this.shadowRoot.getElementById("label");
let verifyL10n = () => {
if (label.textContent.length) {
window.removeEventListener("MozAfterPaint", verifyL10n);
is(label.textContent, "Learn more", "localization content applied to element");
firstWidgetTranslated = true;
}
};
window.addEventListener("MozAfterPaint", verifyL10n);
}
}
class FluentWidget2 extends HTMLElement {
constructor() {
super();
const shadowRoot = this.attachShadow({mode: "open"});
const t = document.querySelector("#fluent-widget-template");
const instance = t.content.cloneNode(true);
shadowRoot.appendChild(instance);
}
connectedCallback() {
MozXULElement.insertFTLIfNeeded("browser/preferences/preferences.ftl");
document.l10n.connectRoot(this.shadowRoot, false);
let label = this.shadowRoot.getElementById("label");
let verifyL10n = () => {
if (firstWidgetTranslated) {
is(label.textContent.length, 0, "This widget should remain untranslated.");
window.removeEventListener("MozAfterPaint", verifyL10n);
SimpleTest.finish();
}
};
window.addEventListener("MozAfterPaint", verifyL10n);
}
}
customElements.define("fluent-widget", FluentWidget);
customElements.define("fluent-widget2", FluentWidget2);
window.addEventListener("load", () => {
window.requestIdleCallback(async () => {
let widget = document.createElement("fluent-widget");
document.body.appendChild(widget);
let widget2 = document.createElement("fluent-widget2");
document.body.appendChild(widget2);
});
}, { once: true });
</script>
</head>
<body>
<template id="fluent-widget-template">
<div>
<button id="label" data-l10n-id="do-not-track-learn-more"></button>
</div>
</template>
</body>
</html>