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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
import { normalizeToKebabCase } from "./utils.mjs";
import { updateSelectedItem } from "../certviewer.mjs";
export class CertificateTabsSection extends HTMLElement {
constructor(isAboutCertificate) {
super();
this.isAboutCertificate = isAboutCertificate || false;
this.connectedCallback();
}
connectedCallback() {
let certificateTabsTemplate = document.getElementById(
"certificate-tabs-template"
);
this.attachShadow({ mode: "open" }).appendChild(
certificateTabsTemplate.content.cloneNode(true)
);
this.render();
}
render() {
this.tabsElement = this.shadowRoot.querySelector(".certificate-tabs");
}
appendChild(child) {
this.tabsElement.appendChild(child);
}
createTabSection(tabName, i) {
let tab = document.createElement("button");
if (tabName) {
tab.textContent = tabName;
} else {
tab.setAttribute(
"data-l10n-id",
"certificate-viewer-unknown-group-label"
);
}
tab.setAttribute("id", normalizeToKebabCase(tabName));
tab.setAttribute("aria-controls", "panel" + i);
tab.setAttribute("idnumber", i);
tab.setAttribute("role", "tab");
tab.classList.add("certificate-tab");
tab.classList.add("tab");
if (this.isAboutCertificate) {
tab.setAttribute("data-l10n-id", tabName);
} else {
// Display tabs on `about:certificate?cert=` pages as dir=auto
// to avoid text like `mozilla.org.*` in RTL.
// Not needed in the standalone version of about:certificate
// because the tab text there should be localized.
tab.dir = "auto";
}
this.tabsElement.appendChild(tab);
// If it is the first tab, allow it to be tabbable by the user.
// If it isn't the first tab, do not allow tab functionality,
// as arrow functionality is implemented in certviewer.mjs.
if (i === 0) {
tab.classList.add("selected");
tab.setAttribute("tabindex", 0);
} else {
tab.setAttribute("tabindex", -1);
}
}
updateSelectedTab(index) {
let tabs = this.tabsElement.querySelectorAll(".certificate-tab");
for (let tab of tabs) {
tab.classList.remove("selected");
}
tabs[index].classList.add("selected");
}
/* Information on setAccessibilityEventListeners() can be found
* at https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/Tab_Role */
setAccessibilityEventListeners() {
let tabs = this.tabsElement.querySelectorAll('[role="tab"]');
// Add a click event handler to each tab
for (let tab of tabs) {
tab.addEventListener("click", e =>
updateSelectedItem(e.target.getAttribute("idnumber"))
);
}
// Enable arrow navigation between tabs in the tab list
let tabFocus = 0;
this.tabsElement.addEventListener("keydown", e => {
// Move right
if (e.keyCode === 39 || e.keyCode === 37) {
// After navigating away from the current tab,
// prevent that tab from being tabbable -
// so as to only allow arrow navigation within the tablist.
tabs[tabFocus].setAttribute("tabindex", -1);
if (e.keyCode === 39) {
tabFocus++;
// If we're at the end, go to the start
if (tabFocus > tabs.length - 1) {
tabFocus = 0;
}
// Move left
} else if (e.keyCode === 37) {
tabFocus--;
// If we're at the start, move to the end
if (tabFocus < 0) {
tabFocus = tabs.length;
}
}
tabs[tabFocus].setAttribute("tabindex", 0);
tabs[tabFocus].focus();
}
});
}
}
customElements.define("certificate-tabs-section", CertificateTabsSection);
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